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wine/dlls/crypt32/msg.c
Marcus Meissner ee1f416409 crypt32: Free the encoded msg (Coverity).
2013-01-10 19:18:31 +01:00

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/*
* Copyright 2007 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "snmp.h"
#include "wine/debug.h"
#include "wine/exception.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
/* Called when a message's ref count reaches zero. Free any message-specific
* data here.
*/
typedef void (*CryptMsgCloseFunc)(HCRYPTMSG msg);
typedef BOOL (*CryptMsgGetParamFunc)(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData);
typedef BOOL (*CryptMsgUpdateFunc)(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal);
typedef BOOL (*CryptMsgControlFunc)(HCRYPTMSG hCryptMsg, DWORD dwFlags,
DWORD dwCtrlType, const void *pvCtrlPara);
static BOOL CRYPT_DefaultMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
DWORD dwCtrlType, const void *pvCtrlPara)
{
TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
SetLastError(E_INVALIDARG);
return FALSE;
}
typedef enum _CryptMsgState {
MsgStateInit,
MsgStateUpdated,
MsgStateDataFinalized,
MsgStateFinalized
} CryptMsgState;
typedef struct _CryptMsgBase
{
LONG ref;
DWORD open_flags;
BOOL streamed;
CMSG_STREAM_INFO stream_info;
CryptMsgState state;
CryptMsgCloseFunc close;
CryptMsgUpdateFunc update;
CryptMsgGetParamFunc get_param;
CryptMsgControlFunc control;
} CryptMsgBase;
static inline void CryptMsgBase_Init(CryptMsgBase *msg, DWORD dwFlags,
PCMSG_STREAM_INFO pStreamInfo, CryptMsgCloseFunc close,
CryptMsgGetParamFunc get_param, CryptMsgUpdateFunc update,
CryptMsgControlFunc control)
{
msg->ref = 1;
msg->open_flags = dwFlags;
if (pStreamInfo)
{
msg->streamed = TRUE;
msg->stream_info = *pStreamInfo;
}
else
{
msg->streamed = FALSE;
memset(&msg->stream_info, 0, sizeof(msg->stream_info));
}
msg->close = close;
msg->get_param = get_param;
msg->update = update;
msg->control = control;
msg->state = MsgStateInit;
}
typedef struct _CDataEncodeMsg
{
CryptMsgBase base;
DWORD bare_content_len;
LPBYTE bare_content;
} CDataEncodeMsg;
static const BYTE empty_data_content[] = { 0x04,0x00 };
static void CDataEncodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CDataEncodeMsg *msg = hCryptMsg;
if (msg->bare_content != empty_data_content)
LocalFree(msg->bare_content);
}
static BOOL WINAPI CRYPT_EncodeContentLength(DWORD dwCertEncodingType,
LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
{
DWORD dataLen = *(DWORD *)pvStructInfo;
DWORD lenBytes;
BOOL ret = TRUE;
/* Trick: report bytes needed based on total message length, even though
* the message isn't available yet. The caller will use the length
* reported here to encode its length.
*/
CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
if (!pbEncoded)
*pcbEncoded = 1 + lenBytes + dataLen;
else
{
if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
pcbEncoded, 1 + lenBytes)))
{
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
pbEncoded = *(BYTE **)pbEncoded;
*pbEncoded++ = ASN_OCTETSTRING;
CRYPT_EncodeLen(dataLen, pbEncoded,
&lenBytes);
}
}
return ret;
}
static BOOL CRYPT_EncodeDataContentInfoHeader(const CDataEncodeMsg *msg,
CRYPT_DATA_BLOB *header)
{
BOOL ret;
if (msg->base.streamed && msg->base.stream_info.cbContent == 0xffffffff)
{
static const BYTE headerValue[] = { 0x30,0x80,0x06,0x09,0x2a,0x86,0x48,
0x86,0xf7,0x0d,0x01,0x07,0x01,0xa0,0x80,0x24,0x80 };
header->pbData = LocalAlloc(0, sizeof(headerValue));
if (header->pbData)
{
header->cbData = sizeof(headerValue);
memcpy(header->pbData, headerValue, sizeof(headerValue));
ret = TRUE;
}
else
ret = FALSE;
}
else
{
struct AsnConstructedItem constructed = { 0,
&msg->base.stream_info.cbContent, CRYPT_EncodeContentLength };
struct AsnEncodeSequenceItem items[2] = {
{ szOID_RSA_data, CRYPT_AsnEncodeOid, 0 },
{ &constructed, CRYPT_AsnEncodeConstructed, 0 },
};
ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items,
sizeof(items) / sizeof(items[0]), CRYPT_ENCODE_ALLOC_FLAG, NULL,
(LPBYTE)&header->pbData, &header->cbData);
if (ret)
{
/* Trick: subtract the content length from the reported length,
* as the actual content hasn't come yet.
*/
header->cbData -= msg->base.stream_info.cbContent;
}
}
return ret;
}
static BOOL CDataEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CDataEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
if (msg->base.state == MsgStateFinalized)
SetLastError(CRYPT_E_MSG_ERROR);
else if (msg->base.streamed)
{
__TRY
{
if (msg->base.state != MsgStateUpdated)
{
CRYPT_DATA_BLOB header;
ret = CRYPT_EncodeDataContentInfoHeader(msg, &header);
if (ret)
{
ret = msg->base.stream_info.pfnStreamOutput(
msg->base.stream_info.pvArg, header.pbData, header.cbData,
FALSE);
LocalFree(header.pbData);
}
}
/* Curiously, every indefinite-length streamed update appears to
* get its own tag and length, regardless of fFinal.
*/
if (msg->base.stream_info.cbContent == 0xffffffff)
{
BYTE *header;
DWORD headerLen;
ret = CRYPT_EncodeContentLength(X509_ASN_ENCODING, NULL,
&cbData, CRYPT_ENCODE_ALLOC_FLAG, NULL, (BYTE *)&header,
&headerLen);
if (ret)
{
ret = msg->base.stream_info.pfnStreamOutput(
msg->base.stream_info.pvArg, header, headerLen,
FALSE);
LocalFree(header);
}
}
if (!fFinal)
{
ret = msg->base.stream_info.pfnStreamOutput(
msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
FALSE);
msg->base.state = MsgStateUpdated;
}
else
{
msg->base.state = MsgStateFinalized;
if (msg->base.stream_info.cbContent == 0xffffffff)
{
BYTE indefinite_trailer[6] = { 0 };
ret = msg->base.stream_info.pfnStreamOutput(
msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
FALSE);
if (ret)
ret = msg->base.stream_info.pfnStreamOutput(
msg->base.stream_info.pvArg, indefinite_trailer,
sizeof(indefinite_trailer), TRUE);
}
else
ret = msg->base.stream_info.pfnStreamOutput(
msg->base.stream_info.pvArg, (BYTE *)pbData, cbData, TRUE);
}
}
__EXCEPT_PAGE_FAULT
{
SetLastError(STATUS_ACCESS_VIOLATION);
ret = FALSE;
}
__ENDTRY;
}
else
{
if (!fFinal)
{
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
SetLastError(E_INVALIDARG);
else
SetLastError(CRYPT_E_MSG_ERROR);
}
else
{
CRYPT_DATA_BLOB blob = { cbData, (LPBYTE)pbData };
msg->base.state = MsgStateFinalized;
/* non-streamed data messages don't allow non-final updates,
* don't bother checking whether data already exist, they can't.
*/
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
&blob, CRYPT_ENCODE_ALLOC_FLAG, NULL, &msg->bare_content,
&msg->bare_content_len);
}
}
return ret;
}
static BOOL CRYPT_CopyParam(void *pvData, DWORD *pcbData, const void *src,
DWORD len)
{
BOOL ret = TRUE;
if (!pvData)
*pcbData = len;
else if (*pcbData < len)
{
*pcbData = len;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
*pcbData = len;
memcpy(pvData, src, len);
}
return ret;
}
static BOOL CDataEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CDataEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_CONTENT_PARAM:
if (msg->base.streamed)
SetLastError(E_INVALIDARG);
else
{
CRYPT_CONTENT_INFO info;
char rsa_data[] = "1.2.840.113549.1.7.1";
info.pszObjId = rsa_data;
info.Content.cbData = msg->bare_content_len;
info.Content.pbData = msg->bare_content;
ret = CryptEncodeObject(X509_ASN_ENCODING, PKCS_CONTENT_INFO, &info,
pvData, pcbData);
}
break;
case CMSG_BARE_CONTENT_PARAM:
if (msg->base.streamed)
SetLastError(E_INVALIDARG);
else
ret = CRYPT_CopyParam(pvData, pcbData, msg->bare_content,
msg->bare_content_len);
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static HCRYPTMSG CDataEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
{
CDataEncodeMsg *msg;
if (pvMsgEncodeInfo)
{
SetLastError(E_INVALIDARG);
return NULL;
}
msg = CryptMemAlloc(sizeof(CDataEncodeMsg));
if (msg)
{
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CDataEncodeMsg_Close, CDataEncodeMsg_GetParam, CDataEncodeMsg_Update,
CRYPT_DefaultMsgControl);
msg->bare_content_len = sizeof(empty_data_content);
msg->bare_content = (LPBYTE)empty_data_content;
}
return msg;
}
typedef struct _CHashEncodeMsg
{
CryptMsgBase base;
HCRYPTPROV prov;
HCRYPTHASH hash;
CRYPT_DATA_BLOB data;
} CHashEncodeMsg;
static void CHashEncodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CHashEncodeMsg *msg = hCryptMsg;
CryptMemFree(msg->data.pbData);
CryptDestroyHash(msg->hash);
if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
CryptReleaseContext(msg->prov, 0);
}
static BOOL CRYPT_EncodePKCSDigestedData(CHashEncodeMsg *msg, void *pvData,
DWORD *pcbData)
{
BOOL ret;
ALG_ID algID;
DWORD size = sizeof(algID);
ret = CryptGetHashParam(msg->hash, HP_ALGID, (BYTE *)&algID, &size, 0);
if (ret)
{
CRYPT_DIGESTED_DATA digestedData = { 0 };
char oid_rsa_data[] = szOID_RSA_data;
digestedData.version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
digestedData.DigestAlgorithm.pszObjId = (LPSTR)CertAlgIdToOID(algID);
/* FIXME: what about digestedData.DigestAlgorithm.Parameters? */
/* Quirk: OID is only encoded messages if an update has happened */
if (msg->base.state != MsgStateInit)
digestedData.ContentInfo.pszObjId = oid_rsa_data;
if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->data.cbData)
{
ret = CRYPT_AsnEncodeOctets(0, NULL, &msg->data,
CRYPT_ENCODE_ALLOC_FLAG, NULL,
(LPBYTE)&digestedData.ContentInfo.Content.pbData,
&digestedData.ContentInfo.Content.cbData);
}
if (msg->base.state == MsgStateFinalized)
{
size = sizeof(DWORD);
ret = CryptGetHashParam(msg->hash, HP_HASHSIZE,
(LPBYTE)&digestedData.hash.cbData, &size, 0);
if (ret)
{
digestedData.hash.pbData = CryptMemAlloc(
digestedData.hash.cbData);
ret = CryptGetHashParam(msg->hash, HP_HASHVAL,
digestedData.hash.pbData, &digestedData.hash.cbData, 0);
}
}
if (ret)
ret = CRYPT_AsnEncodePKCSDigestedData(&digestedData, pvData,
pcbData);
CryptMemFree(digestedData.hash.pbData);
LocalFree(digestedData.ContentInfo.Content.pbData);
}
return ret;
}
static BOOL CHashEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CHashEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
pvData, pcbData);
switch (dwParamType)
{
case CMSG_BARE_CONTENT_PARAM:
if (msg->base.streamed)
SetLastError(E_INVALIDARG);
else
ret = CRYPT_EncodePKCSDigestedData(msg, pvData, pcbData);
break;
case CMSG_CONTENT_PARAM:
{
CRYPT_CONTENT_INFO info;
ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
&info.Content.cbData);
if (ret)
{
info.Content.pbData = CryptMemAlloc(info.Content.cbData);
if (info.Content.pbData)
{
ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
info.Content.pbData, &info.Content.cbData);
if (ret)
{
char oid_rsa_hashed[] = szOID_RSA_hashedData;
info.pszObjId = oid_rsa_hashed;
ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
}
CryptMemFree(info.Content.pbData);
}
else
ret = FALSE;
}
break;
}
case CMSG_COMPUTED_HASH_PARAM:
ret = CryptGetHashParam(msg->hash, HP_HASHVAL, pvData, pcbData, 0);
break;
case CMSG_VERSION_PARAM:
if (msg->base.state != MsgStateFinalized)
SetLastError(CRYPT_E_MSG_ERROR);
else
{
DWORD version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
/* Since the data are always encoded as octets, the version is
* always 0 (see rfc3852, section 7)
*/
ret = CRYPT_CopyParam(pvData, pcbData, &version, sizeof(version));
}
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static BOOL CHashEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CHashEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
if (msg->base.state == MsgStateFinalized)
SetLastError(CRYPT_E_MSG_ERROR);
else if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
{
/* Doesn't do much, as stream output is never called, and you
* can't get the content.
*/
ret = CryptHashData(msg->hash, pbData, cbData, 0);
msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
}
else
{
if (!fFinal)
SetLastError(CRYPT_E_MSG_ERROR);
else
{
ret = CryptHashData(msg->hash, pbData, cbData, 0);
if (ret)
{
msg->data.pbData = CryptMemAlloc(cbData);
if (msg->data.pbData)
{
memcpy(msg->data.pbData + msg->data.cbData, pbData, cbData);
msg->data.cbData += cbData;
}
else
ret = FALSE;
}
msg->base.state = MsgStateFinalized;
}
}
return ret;
}
static HCRYPTMSG CHashEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
{
CHashEncodeMsg *msg;
const CMSG_HASHED_ENCODE_INFO *info = pvMsgEncodeInfo;
HCRYPTPROV prov;
ALG_ID algID;
if (info->cbSize != sizeof(CMSG_HASHED_ENCODE_INFO))
{
SetLastError(E_INVALIDARG);
return NULL;
}
if (!(algID = CertOIDToAlgId(info->HashAlgorithm.pszObjId)))
{
SetLastError(CRYPT_E_UNKNOWN_ALGO);
return NULL;
}
if (info->hCryptProv)
prov = info->hCryptProv;
else
{
prov = CRYPT_GetDefaultProvider();
dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
}
msg = CryptMemAlloc(sizeof(CHashEncodeMsg));
if (msg)
{
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CHashEncodeMsg_Close, CHashEncodeMsg_GetParam, CHashEncodeMsg_Update,
CRYPT_DefaultMsgControl);
msg->prov = prov;
msg->data.cbData = 0;
msg->data.pbData = NULL;
if (!CryptCreateHash(prov, algID, 0, 0, &msg->hash))
{
CryptMsgClose(msg);
msg = NULL;
}
}
return msg;
}
typedef struct _CMSG_SIGNER_ENCODE_INFO_WITH_CMS
{
DWORD cbSize;
PCERT_INFO pCertInfo;
HCRYPTPROV hCryptProv;
DWORD dwKeySpec;
CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
void *pvHashAuxInfo;
DWORD cAuthAttr;
PCRYPT_ATTRIBUTE rgAuthAttr;
DWORD cUnauthAttr;
PCRYPT_ATTRIBUTE rgUnauthAttr;
CERT_ID SignerId;
CRYPT_ALGORITHM_IDENTIFIER HashEncryptionAlgorithm;
void *pvHashEncryptionAuxInfo;
} CMSG_SIGNER_ENCODE_INFO_WITH_CMS, *PCMSG_SIGNER_ENCODE_INFO_WITH_CMS;
typedef struct _CMSG_SIGNED_ENCODE_INFO_WITH_CMS
{
DWORD cbSize;
DWORD cSigners;
PCMSG_SIGNER_ENCODE_INFO_WITH_CMS rgSigners;
DWORD cCertEncoded;
PCERT_BLOB rgCertEncoded;
DWORD cCrlEncoded;
PCRL_BLOB rgCrlEncoded;
DWORD cAttrCertEncoded;
PCERT_BLOB rgAttrCertEncoded;
} CMSG_SIGNED_ENCODE_INFO_WITH_CMS, *PCMSG_SIGNED_ENCODE_INFO_WITH_CMS;
static BOOL CRYPT_IsValidSigner(const CMSG_SIGNER_ENCODE_INFO_WITH_CMS *signer)
{
if (signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO) &&
signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
{
SetLastError(E_INVALIDARG);
return FALSE;
}
if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO))
{
if (!signer->pCertInfo->SerialNumber.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
if (!signer->pCertInfo->Issuer.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
}
else if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
{
switch (signer->SignerId.dwIdChoice)
{
case 0:
if (!signer->pCertInfo->SerialNumber.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
if (!signer->pCertInfo->Issuer.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
break;
case CERT_ID_ISSUER_SERIAL_NUMBER:
if (!signer->SignerId.u.IssuerSerialNumber.SerialNumber.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
if (!signer->SignerId.u.IssuerSerialNumber.Issuer.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
break;
case CERT_ID_KEY_IDENTIFIER:
if (!signer->SignerId.u.KeyId.cbData)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
break;
default:
SetLastError(E_INVALIDARG);
}
if (signer->HashEncryptionAlgorithm.pszObjId)
{
FIXME("CMSG_SIGNER_ENCODE_INFO with CMS fields unsupported\n");
return FALSE;
}
}
if (!signer->hCryptProv)
{
SetLastError(E_INVALIDARG);
return FALSE;
}
if (!CertOIDToAlgId(signer->HashAlgorithm.pszObjId))
{
SetLastError(CRYPT_E_UNKNOWN_ALGO);
return FALSE;
}
return TRUE;
}
static BOOL CRYPT_ConstructBlob(CRYPT_DATA_BLOB *out, const CRYPT_DATA_BLOB *in)
{
BOOL ret = TRUE;
out->cbData = in->cbData;
if (out->cbData)
{
out->pbData = CryptMemAlloc(out->cbData);
if (out->pbData)
memcpy(out->pbData, in->pbData, out->cbData);
else
ret = FALSE;
}
else
out->pbData = NULL;
return ret;
}
static BOOL CRYPT_ConstructBlobArray(DWORD *outCBlobs,
PCRYPT_DATA_BLOB *outPBlobs, DWORD cBlobs, const CRYPT_DATA_BLOB *pBlobs)
{
BOOL ret = TRUE;
*outCBlobs = cBlobs;
if (cBlobs)
{
*outPBlobs = CryptMemAlloc(cBlobs * sizeof(CRYPT_DATA_BLOB));
if (*outPBlobs)
{
DWORD i;
memset(*outPBlobs, 0, cBlobs * sizeof(CRYPT_DATA_BLOB));
for (i = 0; ret && i < cBlobs; i++)
ret = CRYPT_ConstructBlob(&(*outPBlobs)[i], &pBlobs[i]);
}
else
ret = FALSE;
}
return ret;
}
static void CRYPT_FreeBlobArray(DWORD cBlobs, PCRYPT_DATA_BLOB blobs)
{
DWORD i;
for (i = 0; i < cBlobs; i++)
CryptMemFree(blobs[i].pbData);
CryptMemFree(blobs);
}
static BOOL CRYPT_ConstructAttribute(CRYPT_ATTRIBUTE *out,
const CRYPT_ATTRIBUTE *in)
{
BOOL ret;
out->pszObjId = CryptMemAlloc(strlen(in->pszObjId) + 1);
if (out->pszObjId)
{
strcpy(out->pszObjId, in->pszObjId);
ret = CRYPT_ConstructBlobArray(&out->cValue, &out->rgValue,
in->cValue, in->rgValue);
}
else
ret = FALSE;
return ret;
}
static BOOL CRYPT_ConstructAttributes(CRYPT_ATTRIBUTES *out,
const CRYPT_ATTRIBUTES *in)
{
BOOL ret = TRUE;
out->cAttr = in->cAttr;
if (out->cAttr)
{
out->rgAttr = CryptMemAlloc(out->cAttr * sizeof(CRYPT_ATTRIBUTE));
if (out->rgAttr)
{
DWORD i;
memset(out->rgAttr, 0, out->cAttr * sizeof(CRYPT_ATTRIBUTE));
for (i = 0; ret && i < out->cAttr; i++)
ret = CRYPT_ConstructAttribute(&out->rgAttr[i], &in->rgAttr[i]);
}
else
ret = FALSE;
}
else
out->rgAttr = NULL;
return ret;
}
/* Constructs a CMSG_CMS_SIGNER_INFO from a CMSG_SIGNER_ENCODE_INFO_WITH_CMS. */
static BOOL CSignerInfo_Construct(CMSG_CMS_SIGNER_INFO *info,
const CMSG_SIGNER_ENCODE_INFO_WITH_CMS *in)
{
BOOL ret;
if (in->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO))
{
info->dwVersion = CMSG_SIGNER_INFO_V1;
ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
&in->pCertInfo->Issuer);
if (ret)
ret = CRYPT_ConstructBlob(
&info->SignerId.u.IssuerSerialNumber.SerialNumber,
&in->pCertInfo->SerialNumber);
info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
info->HashEncryptionAlgorithm.pszObjId =
in->pCertInfo->SubjectPublicKeyInfo.Algorithm.pszObjId;
if (ret)
ret = CRYPT_ConstructBlob(&info->HashEncryptionAlgorithm.Parameters,
&in->pCertInfo->SubjectPublicKeyInfo.Algorithm.Parameters);
}
else
{
const CRYPT_ALGORITHM_IDENTIFIER *pEncrAlg;
/* Implicitly in->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS).
* See CRYPT_IsValidSigner.
*/
if (!in->SignerId.dwIdChoice)
{
info->dwVersion = CMSG_SIGNER_INFO_V1;
ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
&in->pCertInfo->Issuer);
if (ret)
ret = CRYPT_ConstructBlob(
&info->SignerId.u.IssuerSerialNumber.SerialNumber,
&in->pCertInfo->SerialNumber);
info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
}
else if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
info->dwVersion = CMSG_SIGNER_INFO_V1;
info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
&in->SignerId.u.IssuerSerialNumber.Issuer);
if (ret)
ret = CRYPT_ConstructBlob(
&info->SignerId.u.IssuerSerialNumber.SerialNumber,
&in->SignerId.u.IssuerSerialNumber.SerialNumber);
}
else
{
/* Implicitly dwIdChoice == CERT_ID_KEY_IDENTIFIER */
info->dwVersion = CMSG_SIGNER_INFO_V3;
info->SignerId.dwIdChoice = CERT_ID_KEY_IDENTIFIER;
ret = CRYPT_ConstructBlob(&info->SignerId.u.KeyId,
&in->SignerId.u.KeyId);
}
pEncrAlg = in->HashEncryptionAlgorithm.pszObjId ?
&in->HashEncryptionAlgorithm :
&in->pCertInfo->SubjectPublicKeyInfo.Algorithm;
info->HashEncryptionAlgorithm.pszObjId = pEncrAlg->pszObjId;
if (ret)
ret = CRYPT_ConstructBlob(&info->HashEncryptionAlgorithm.Parameters,
&pEncrAlg->Parameters);
}
/* Assumption: algorithm IDs will point to static strings, not
* stack-based ones, so copying the pointer values is safe.
*/
info->HashAlgorithm.pszObjId = in->HashAlgorithm.pszObjId;
if (ret)
ret = CRYPT_ConstructBlob(&info->HashAlgorithm.Parameters,
&in->HashAlgorithm.Parameters);
if (ret)
ret = CRYPT_ConstructAttributes(&info->AuthAttrs,
(CRYPT_ATTRIBUTES *)&in->cAuthAttr);
if (ret)
ret = CRYPT_ConstructAttributes(&info->UnauthAttrs,
(CRYPT_ATTRIBUTES *)&in->cUnauthAttr);
return ret;
}
static void CSignerInfo_Free(CMSG_CMS_SIGNER_INFO *info)
{
DWORD i, j;
if (info->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
CryptMemFree(info->SignerId.u.IssuerSerialNumber.Issuer.pbData);
CryptMemFree(info->SignerId.u.IssuerSerialNumber.SerialNumber.pbData);
}
else
CryptMemFree(info->SignerId.u.KeyId.pbData);
CryptMemFree(info->HashAlgorithm.Parameters.pbData);
CryptMemFree(info->HashEncryptionAlgorithm.Parameters.pbData);
CryptMemFree(info->EncryptedHash.pbData);
for (i = 0; i < info->AuthAttrs.cAttr; i++)
{
for (j = 0; j < info->AuthAttrs.rgAttr[i].cValue; j++)
CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue[j].pbData);
CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue);
CryptMemFree(info->AuthAttrs.rgAttr[i].pszObjId);
}
CryptMemFree(info->AuthAttrs.rgAttr);
for (i = 0; i < info->UnauthAttrs.cAttr; i++)
{
for (j = 0; j < info->UnauthAttrs.rgAttr[i].cValue; j++)
CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue[j].pbData);
CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue);
CryptMemFree(info->UnauthAttrs.rgAttr[i].pszObjId);
}
CryptMemFree(info->UnauthAttrs.rgAttr);
}
typedef struct _CSignerHandles
{
HCRYPTHASH contentHash;
HCRYPTHASH authAttrHash;
} CSignerHandles;
typedef struct _CSignedMsgData
{
CRYPT_SIGNED_INFO *info;
DWORD cSignerHandle;
CSignerHandles *signerHandles;
} CSignedMsgData;
/* Constructs the signer handles for the signerIndex'th signer of msg_data.
* Assumes signerIndex is a valid idnex, and that msg_data's info has already
* been constructed.
*/
static BOOL CSignedMsgData_ConstructSignerHandles(CSignedMsgData *msg_data,
DWORD signerIndex, HCRYPTPROV crypt_prov)
{
ALG_ID algID;
BOOL ret;
algID = CertOIDToAlgId(
msg_data->info->rgSignerInfo[signerIndex].HashAlgorithm.pszObjId);
ret = CryptCreateHash(crypt_prov, algID, 0, 0,
&msg_data->signerHandles->contentHash);
if (ret && msg_data->info->rgSignerInfo[signerIndex].AuthAttrs.cAttr > 0)
ret = CryptCreateHash(crypt_prov, algID, 0, 0,
&msg_data->signerHandles->authAttrHash);
return ret;
}
/* Allocates a CSignedMsgData's handles. Assumes its info has already been
* constructed.
*/
static BOOL CSignedMsgData_AllocateHandles(CSignedMsgData *msg_data)
{
BOOL ret = TRUE;
if (msg_data->info->cSignerInfo)
{
msg_data->signerHandles =
CryptMemAlloc(msg_data->info->cSignerInfo * sizeof(CSignerHandles));
if (msg_data->signerHandles)
{
msg_data->cSignerHandle = msg_data->info->cSignerInfo;
memset(msg_data->signerHandles, 0,
msg_data->info->cSignerInfo * sizeof(CSignerHandles));
}
else
{
msg_data->cSignerHandle = 0;
ret = FALSE;
}
}
else
{
msg_data->cSignerHandle = 0;
msg_data->signerHandles = NULL;
}
return ret;
}
static void CSignedMsgData_CloseHandles(CSignedMsgData *msg_data)
{
DWORD i;
for (i = 0; i < msg_data->cSignerHandle; i++)
{
if (msg_data->signerHandles[i].contentHash)
CryptDestroyHash(msg_data->signerHandles[i].contentHash);
if (msg_data->signerHandles[i].authAttrHash)
CryptDestroyHash(msg_data->signerHandles[i].authAttrHash);
}
CryptMemFree(msg_data->signerHandles);
msg_data->signerHandles = NULL;
msg_data->cSignerHandle = 0;
}
static BOOL CSignedMsgData_UpdateHash(CSignedMsgData *msg_data,
const BYTE *pbData, DWORD cbData)
{
DWORD i;
BOOL ret = TRUE;
for (i = 0; ret && i < msg_data->cSignerHandle; i++)
ret = CryptHashData(msg_data->signerHandles[i].contentHash, pbData,
cbData, 0);
return ret;
}
static BOOL CRYPT_AppendAttribute(CRYPT_ATTRIBUTES *out,
const CRYPT_ATTRIBUTE *in)
{
BOOL ret = FALSE;
out->rgAttr = CryptMemRealloc(out->rgAttr,
(out->cAttr + 1) * sizeof(CRYPT_ATTRIBUTE));
if (out->rgAttr)
{
ret = CRYPT_ConstructAttribute(&out->rgAttr[out->cAttr], in);
if (ret)
out->cAttr++;
}
return ret;
}
static BOOL CSignedMsgData_AppendMessageDigestAttribute(
CSignedMsgData *msg_data, DWORD signerIndex)
{
BOOL ret;
DWORD size;
CRYPT_HASH_BLOB hash = { 0, NULL }, encodedHash = { 0, NULL };
char messageDigest[] = szOID_RSA_messageDigest;
CRYPT_ATTRIBUTE messageDigestAttr = { messageDigest, 1, &encodedHash };
size = sizeof(DWORD);
ret = CryptGetHashParam(
msg_data->signerHandles[signerIndex].contentHash, HP_HASHSIZE,
(LPBYTE)&hash.cbData, &size, 0);
if (ret)
{
hash.pbData = CryptMemAlloc(hash.cbData);
ret = CryptGetHashParam(
msg_data->signerHandles[signerIndex].contentHash, HP_HASHVAL,
hash.pbData, &hash.cbData, 0);
if (ret)
{
ret = CRYPT_AsnEncodeOctets(0, NULL, &hash, CRYPT_ENCODE_ALLOC_FLAG,
NULL, (LPBYTE)&encodedHash.pbData, &encodedHash.cbData);
if (ret)
{
ret = CRYPT_AppendAttribute(
&msg_data->info->rgSignerInfo[signerIndex].AuthAttrs,
&messageDigestAttr);
LocalFree(encodedHash.pbData);
}
}
CryptMemFree(hash.pbData);
}
return ret;
}
typedef enum {
Sign,
Verify
} SignOrVerify;
static BOOL CSignedMsgData_UpdateAuthenticatedAttributes(
CSignedMsgData *msg_data, SignOrVerify flag)
{
DWORD i;
BOOL ret = TRUE;
TRACE("(%p)\n", msg_data);
for (i = 0; ret && i < msg_data->info->cSignerInfo; i++)
{
if (msg_data->info->rgSignerInfo[i].AuthAttrs.cAttr)
{
if (flag == Sign)
{
BYTE oid_rsa_data_encoded[] = { 0x06,0x09,0x2a,0x86,0x48,0x86,
0xf7,0x0d,0x01,0x07,0x01 };
CRYPT_DATA_BLOB content = { sizeof(oid_rsa_data_encoded),
oid_rsa_data_encoded };
char contentType[] = szOID_RSA_contentType;
CRYPT_ATTRIBUTE contentTypeAttr = { contentType, 1, &content };
/* FIXME: does this depend on inner OID? */
ret = CRYPT_AppendAttribute(
&msg_data->info->rgSignerInfo[i].AuthAttrs, &contentTypeAttr);
if (ret)
ret = CSignedMsgData_AppendMessageDigestAttribute(msg_data,
i);
}
if (ret)
{
LPBYTE encodedAttrs;
DWORD size;
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, PKCS_ATTRIBUTES,
&msg_data->info->rgSignerInfo[i].AuthAttrs,
CRYPT_ENCODE_ALLOC_FLAG, NULL, &encodedAttrs, &size);
if (ret)
{
ret = CryptHashData(
msg_data->signerHandles[i].authAttrHash, encodedAttrs,
size, 0);
LocalFree(encodedAttrs);
}
}
}
}
TRACE("returning %d\n", ret);
return ret;
}
static void CRYPT_ReverseBytes(CRYPT_HASH_BLOB *hash)
{
DWORD i;
BYTE tmp;
for (i = 0; i < hash->cbData / 2; i++)
{
tmp = hash->pbData[hash->cbData - i - 1];
hash->pbData[hash->cbData - i - 1] = hash->pbData[i];
hash->pbData[i] = tmp;
}
}
static BOOL CSignedMsgData_Sign(CSignedMsgData *msg_data)
{
DWORD i;
BOOL ret = TRUE;
TRACE("(%p)\n", msg_data);
for (i = 0; ret && i < msg_data->info->cSignerInfo; i++)
{
HCRYPTHASH hash;
if (msg_data->info->rgSignerInfo[i].AuthAttrs.cAttr)
hash = msg_data->signerHandles[i].authAttrHash;
else
hash = msg_data->signerHandles[i].contentHash;
ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0, NULL,
&msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
if (ret)
{
msg_data->info->rgSignerInfo[i].EncryptedHash.pbData =
CryptMemAlloc(
msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
if (msg_data->info->rgSignerInfo[i].EncryptedHash.pbData)
{
ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0,
msg_data->info->rgSignerInfo[i].EncryptedHash.pbData,
&msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
if (ret)
CRYPT_ReverseBytes(
&msg_data->info->rgSignerInfo[i].EncryptedHash);
}
else
ret = FALSE;
}
}
return ret;
}
static BOOL CSignedMsgData_Update(CSignedMsgData *msg_data,
const BYTE *pbData, DWORD cbData, BOOL fFinal, SignOrVerify flag)
{
BOOL ret = CSignedMsgData_UpdateHash(msg_data, pbData, cbData);
if (ret && fFinal)
{
ret = CSignedMsgData_UpdateAuthenticatedAttributes(msg_data, flag);
if (ret && flag == Sign)
ret = CSignedMsgData_Sign(msg_data);
}
return ret;
}
typedef struct _CSignedEncodeMsg
{
CryptMsgBase base;
LPSTR innerOID;
CRYPT_DATA_BLOB data;
CSignedMsgData msg_data;
} CSignedEncodeMsg;
static void CSignedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CSignedEncodeMsg *msg = hCryptMsg;
DWORD i;
CryptMemFree(msg->innerOID);
CryptMemFree(msg->data.pbData);
CRYPT_FreeBlobArray(msg->msg_data.info->cCertEncoded,
msg->msg_data.info->rgCertEncoded);
CRYPT_FreeBlobArray(msg->msg_data.info->cCrlEncoded,
msg->msg_data.info->rgCrlEncoded);
for (i = 0; i < msg->msg_data.info->cSignerInfo; i++)
CSignerInfo_Free(&msg->msg_data.info->rgSignerInfo[i]);
CSignedMsgData_CloseHandles(&msg->msg_data);
CryptMemFree(msg->msg_data.info->rgSignerInfo);
CryptMemFree(msg->msg_data.info);
}
static BOOL CSignedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CSignedEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_CONTENT_PARAM:
{
CRYPT_CONTENT_INFO info;
ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
&info.Content.cbData);
if (ret)
{
info.Content.pbData = CryptMemAlloc(info.Content.cbData);
if (info.Content.pbData)
{
ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
info.Content.pbData, &info.Content.cbData);
if (ret)
{
char oid_rsa_signed[] = szOID_RSA_signedData;
info.pszObjId = oid_rsa_signed;
ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
}
CryptMemFree(info.Content.pbData);
}
else
ret = FALSE;
}
break;
}
case CMSG_BARE_CONTENT_PARAM:
{
CRYPT_SIGNED_INFO info;
BOOL freeContent = FALSE;
info = *msg->msg_data.info;
if (!msg->innerOID || !strcmp(msg->innerOID, szOID_RSA_data))
{
char oid_rsa_data[] = szOID_RSA_data;
/* Quirk: OID is only encoded messages if an update has happened */
if (msg->base.state != MsgStateInit)
info.content.pszObjId = oid_rsa_data;
else
info.content.pszObjId = NULL;
if (msg->data.cbData)
{
CRYPT_DATA_BLOB blob = { msg->data.cbData, msg->data.pbData };
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
&blob, CRYPT_ENCODE_ALLOC_FLAG, NULL,
&info.content.Content.pbData, &info.content.Content.cbData);
freeContent = TRUE;
}
else
{
info.content.Content.cbData = 0;
info.content.Content.pbData = NULL;
ret = TRUE;
}
}
else
{
info.content.pszObjId = msg->innerOID;
info.content.Content.cbData = msg->data.cbData;
info.content.Content.pbData = msg->data.pbData;
ret = TRUE;
}
if (ret)
{
ret = CRYPT_AsnEncodeCMSSignedInfo(&info, pvData, pcbData);
if (freeContent)
LocalFree(info.content.Content.pbData);
}
break;
}
case CMSG_COMPUTED_HASH_PARAM:
if (dwIndex >= msg->msg_data.cSignerHandle)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CryptGetHashParam(
msg->msg_data.signerHandles[dwIndex].contentHash, HP_HASHVAL,
pvData, pcbData, 0);
break;
case CMSG_ENCODED_SIGNER:
if (dwIndex >= msg->msg_data.info->cSignerInfo)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CryptEncodeObjectEx(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
CMS_SIGNER_INFO, &msg->msg_data.info->rgSignerInfo[dwIndex], 0,
NULL, pvData, pcbData);
break;
case CMSG_VERSION_PARAM:
ret = CRYPT_CopyParam(pvData, pcbData, &msg->msg_data.info->version,
sizeof(msg->msg_data.info->version));
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static BOOL CSignedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CSignedEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
if (msg->base.state == MsgStateFinalized)
SetLastError(CRYPT_E_MSG_ERROR);
else if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
{
ret = CSignedMsgData_Update(&msg->msg_data, pbData, cbData, fFinal,
Sign);
if (msg->base.streamed)
FIXME("streamed partial stub\n");
msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
}
else
{
if (!fFinal)
SetLastError(CRYPT_E_MSG_ERROR);
else
{
if (cbData)
{
msg->data.pbData = CryptMemAlloc(cbData);
if (msg->data.pbData)
{
memcpy(msg->data.pbData, pbData, cbData);
msg->data.cbData = cbData;
ret = TRUE;
}
}
else
ret = TRUE;
if (ret)
ret = CSignedMsgData_Update(&msg->msg_data, pbData, cbData,
fFinal, Sign);
msg->base.state = MsgStateFinalized;
}
}
return ret;
}
static HCRYPTMSG CSignedEncodeMsg_Open(DWORD dwFlags,
const void *pvMsgEncodeInfo, LPCSTR pszInnerContentObjID,
PCMSG_STREAM_INFO pStreamInfo)
{
const CMSG_SIGNED_ENCODE_INFO_WITH_CMS *info = pvMsgEncodeInfo;
DWORD i;
CSignedEncodeMsg *msg;
if (info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO) &&
info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS))
{
SetLastError(E_INVALIDARG);
return NULL;
}
if (info->cbSize == sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS) &&
info->cAttrCertEncoded)
{
FIXME("CMSG_SIGNED_ENCODE_INFO with CMS fields unsupported\n");
return NULL;
}
for (i = 0; i < info->cSigners; i++)
if (!CRYPT_IsValidSigner(&info->rgSigners[i]))
return NULL;
msg = CryptMemAlloc(sizeof(CSignedEncodeMsg));
if (msg)
{
BOOL ret = TRUE;
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CSignedEncodeMsg_Close, CSignedEncodeMsg_GetParam,
CSignedEncodeMsg_Update, CRYPT_DefaultMsgControl);
if (pszInnerContentObjID)
{
msg->innerOID = CryptMemAlloc(strlen(pszInnerContentObjID) + 1);
if (msg->innerOID)
strcpy(msg->innerOID, pszInnerContentObjID);
else
ret = FALSE;
}
else
msg->innerOID = NULL;
msg->data.cbData = 0;
msg->data.pbData = NULL;
if (ret)
msg->msg_data.info = CryptMemAlloc(sizeof(CRYPT_SIGNED_INFO));
else
msg->msg_data.info = NULL;
if (msg->msg_data.info)
{
memset(msg->msg_data.info, 0, sizeof(CRYPT_SIGNED_INFO));
msg->msg_data.info->version = CMSG_SIGNED_DATA_V1;
}
else
ret = FALSE;
if (ret)
{
if (info->cSigners)
{
msg->msg_data.info->rgSignerInfo =
CryptMemAlloc(info->cSigners * sizeof(CMSG_CMS_SIGNER_INFO));
if (msg->msg_data.info->rgSignerInfo)
{
msg->msg_data.info->cSignerInfo = info->cSigners;
memset(msg->msg_data.info->rgSignerInfo, 0,
msg->msg_data.info->cSignerInfo *
sizeof(CMSG_CMS_SIGNER_INFO));
ret = CSignedMsgData_AllocateHandles(&msg->msg_data);
for (i = 0; ret && i < msg->msg_data.info->cSignerInfo; i++)
{
if (info->rgSigners[i].SignerId.dwIdChoice ==
CERT_ID_KEY_IDENTIFIER)
msg->msg_data.info->version = CMSG_SIGNED_DATA_V3;
ret = CSignerInfo_Construct(
&msg->msg_data.info->rgSignerInfo[i],
&info->rgSigners[i]);
if (ret)
{
ret = CSignedMsgData_ConstructSignerHandles(
&msg->msg_data, i, info->rgSigners[i].hCryptProv);
if (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
CryptReleaseContext(info->rgSigners[i].hCryptProv,
0);
}
}
}
else
ret = FALSE;
}
else
{
msg->msg_data.info->cSignerInfo = 0;
msg->msg_data.signerHandles = NULL;
msg->msg_data.cSignerHandle = 0;
}
}
if (ret)
ret = CRYPT_ConstructBlobArray(&msg->msg_data.info->cCertEncoded,
&msg->msg_data.info->rgCertEncoded, info->cCertEncoded,
info->rgCertEncoded);
if (ret)
ret = CRYPT_ConstructBlobArray(&msg->msg_data.info->cCrlEncoded,
&msg->msg_data.info->rgCrlEncoded, info->cCrlEncoded,
info->rgCrlEncoded);
if (!ret)
{
CSignedEncodeMsg_Close(msg);
CryptMemFree(msg);
msg = NULL;
}
}
return msg;
}
typedef struct _CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS
{
DWORD cbSize;
HCRYPTPROV_LEGACY hCryptProv;
CRYPT_ALGORITHM_IDENTIFIER ContentEncryptionAlgorithm;
void *pvEncryptionAuxInfo;
DWORD cRecipients;
PCERT_INFO *rgpRecipientCert;
PCMSG_RECIPIENT_ENCODE_INFO rgCmsRecipients;
DWORD cCertEncoded;
PCERT_BLOB rgCertEncoded;
DWORD cCrlEncoded;
PCRL_BLOB rgCrlEncoded;
DWORD cAttrCertEncoded;
PCERT_BLOB rgAttrCertEncoded;
DWORD cUnprotectedAttr;
PCRYPT_ATTRIBUTE rgUnprotectedAttr;
} CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS, *PCMSG_ENVELOPED_ENCODE_INFO_WITH_CMS;
typedef struct _CEnvelopedEncodeMsg
{
CryptMsgBase base;
CRYPT_ALGORITHM_IDENTIFIER algo;
HCRYPTPROV prov;
HCRYPTKEY key;
DWORD cRecipientInfo;
CMSG_KEY_TRANS_RECIPIENT_INFO *recipientInfo;
CRYPT_DATA_BLOB data;
} CEnvelopedEncodeMsg;
static BOOL CRYPT_ConstructAlgorithmId(CRYPT_ALGORITHM_IDENTIFIER *out,
const CRYPT_ALGORITHM_IDENTIFIER *in)
{
out->pszObjId = CryptMemAlloc(strlen(in->pszObjId) + 1);
if (out->pszObjId)
{
strcpy(out->pszObjId, in->pszObjId);
return CRYPT_ConstructBlob(&out->Parameters, &in->Parameters);
}
else
return FALSE;
}
static BOOL CRYPT_ConstructBitBlob(CRYPT_BIT_BLOB *out, const CRYPT_BIT_BLOB *in)
{
out->cbData = in->cbData;
out->cUnusedBits = in->cUnusedBits;
if (out->cbData)
{
out->pbData = CryptMemAlloc(out->cbData);
if (out->pbData)
memcpy(out->pbData, in->pbData, out->cbData);
else
return FALSE;
}
else
out->pbData = NULL;
return TRUE;
}
static BOOL CRYPT_GenKey(CMSG_CONTENT_ENCRYPT_INFO *info, ALG_ID algID)
{
static HCRYPTOIDFUNCSET set = NULL;
PFN_CMSG_GEN_CONTENT_ENCRYPT_KEY genKeyFunc = NULL;
HCRYPTOIDFUNCADDR hFunc;
BOOL ret;
if (!set)
set = CryptInitOIDFunctionSet(CMSG_OID_GEN_CONTENT_ENCRYPT_KEY_FUNC, 0);
CryptGetOIDFunctionAddress(set, X509_ASN_ENCODING,
info->ContentEncryptionAlgorithm.pszObjId, 0, (void **)&genKeyFunc, &hFunc);
if (genKeyFunc)
{
ret = genKeyFunc(info, 0, NULL);
CryptFreeOIDFunctionAddress(hFunc, 0);
}
else
ret = CryptGenKey(info->hCryptProv, algID, CRYPT_EXPORTABLE,
&info->hContentEncryptKey);
return ret;
}
static BOOL WINAPI CRYPT_ExportKeyTrans(
PCMSG_CONTENT_ENCRYPT_INFO pContentEncryptInfo,
PCMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO pKeyTransEncodeInfo,
PCMSG_KEY_TRANS_ENCRYPT_INFO pKeyTransEncryptInfo,
DWORD dwFlags, void *pvReserved)
{
CERT_PUBLIC_KEY_INFO keyInfo;
HCRYPTKEY expKey;
BOOL ret;
ret = CRYPT_ConstructAlgorithmId(&keyInfo.Algorithm,
&pKeyTransEncodeInfo->KeyEncryptionAlgorithm);
if (ret)
CRYPT_ConstructBitBlob(&keyInfo.PublicKey,
&pKeyTransEncodeInfo->RecipientPublicKey);
if (ret)
ret = CryptImportPublicKeyInfo(pKeyTransEncodeInfo->hCryptProv,
X509_ASN_ENCODING, &keyInfo, &expKey);
if (ret)
{
DWORD size;
ret = CryptExportKey(pContentEncryptInfo->hContentEncryptKey, expKey,
SIMPLEBLOB, 0, NULL, &size);
if (ret)
{
BYTE *keyBlob;
keyBlob = CryptMemAlloc(size);
if (keyBlob)
{
ret = CryptExportKey(pContentEncryptInfo->hContentEncryptKey,
expKey, SIMPLEBLOB, 0, keyBlob, &size);
if (ret)
{
DWORD head = sizeof(BLOBHEADER) + sizeof(ALG_ID);
pKeyTransEncryptInfo->EncryptedKey.pbData =
CryptMemAlloc(size - head);
if (pKeyTransEncryptInfo->EncryptedKey.pbData)
{
DWORD i, k = 0;
pKeyTransEncryptInfo->EncryptedKey.cbData = size - head;
for (i = size - 1; i >= head; --i, ++k)
pKeyTransEncryptInfo->EncryptedKey.pbData[k] =
keyBlob[i];
}
else
ret = FALSE;
}
CryptMemFree(keyBlob);
}
else
ret = FALSE;
}
CryptDestroyKey(expKey);
}
CryptMemFree(keyInfo.PublicKey.pbData);
CryptMemFree(keyInfo.Algorithm.pszObjId);
CryptMemFree(keyInfo.Algorithm.Parameters.pbData);
return ret;
}
static BOOL CRYPT_ExportEncryptedKey(CMSG_CONTENT_ENCRYPT_INFO *info, DWORD i,
CRYPT_DATA_BLOB *key)
{
static HCRYPTOIDFUNCSET set = NULL;
PFN_CMSG_EXPORT_KEY_TRANS exportKeyFunc = NULL;
HCRYPTOIDFUNCADDR hFunc = NULL;
CMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO *encodeInfo =
info->rgCmsRecipients[i].u.pKeyTrans;
CMSG_KEY_TRANS_ENCRYPT_INFO encryptInfo;
BOOL ret;
memset(&encryptInfo, 0, sizeof(encryptInfo));
encryptInfo.cbSize = sizeof(encryptInfo);
encryptInfo.dwRecipientIndex = i;
ret = CRYPT_ConstructAlgorithmId(&encryptInfo.KeyEncryptionAlgorithm,
&encodeInfo->KeyEncryptionAlgorithm);
if (!set)
set = CryptInitOIDFunctionSet(CMSG_OID_EXPORT_KEY_TRANS_FUNC, 0);
CryptGetOIDFunctionAddress(set, X509_ASN_ENCODING,
encryptInfo.KeyEncryptionAlgorithm.pszObjId, 0, (void **)&exportKeyFunc,
&hFunc);
if (!exportKeyFunc)
exportKeyFunc = CRYPT_ExportKeyTrans;
if (ret)
{
ret = exportKeyFunc(info, encodeInfo, &encryptInfo, 0, NULL);
if (ret)
{
key->cbData = encryptInfo.EncryptedKey.cbData;
key->pbData = encryptInfo.EncryptedKey.pbData;
}
}
if (hFunc)
CryptFreeOIDFunctionAddress(hFunc, 0);
CryptMemFree(encryptInfo.KeyEncryptionAlgorithm.pszObjId);
CryptMemFree(encryptInfo.KeyEncryptionAlgorithm.Parameters.pbData);
return ret;
}
static LPVOID WINAPI mem_alloc(size_t size)
{
return HeapAlloc(GetProcessHeap(), 0, size);
}
static VOID WINAPI mem_free(LPVOID pv)
{
HeapFree(GetProcessHeap(), 0, pv);
}
static BOOL CContentEncryptInfo_Construct(CMSG_CONTENT_ENCRYPT_INFO *info,
const CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS *in, HCRYPTPROV prov)
{
BOOL ret;
info->cbSize = sizeof(CMSG_CONTENT_ENCRYPT_INFO);
info->hCryptProv = prov;
ret = CRYPT_ConstructAlgorithmId(&info->ContentEncryptionAlgorithm,
&in->ContentEncryptionAlgorithm);
info->pvEncryptionAuxInfo = in->pvEncryptionAuxInfo;
info->cRecipients = in->cRecipients;
if (ret)
{
info->rgCmsRecipients = CryptMemAlloc(in->cRecipients *
sizeof(CMSG_RECIPIENT_ENCODE_INFO));
if (info->rgCmsRecipients)
{
DWORD i;
for (i = 0; ret && i < in->cRecipients; ++i)
{
CMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO *encodeInfo;
CERT_INFO *cert = in->rgpRecipientCert[i];
info->rgCmsRecipients[i].dwRecipientChoice =
CMSG_KEY_TRANS_RECIPIENT;
encodeInfo = CryptMemAlloc(sizeof(*encodeInfo));
info->rgCmsRecipients[i].u.pKeyTrans = encodeInfo;
if (encodeInfo)
{
encodeInfo->cbSize = sizeof(*encodeInfo);
ret = CRYPT_ConstructAlgorithmId(
&encodeInfo->KeyEncryptionAlgorithm,
&cert->SubjectPublicKeyInfo.Algorithm);
encodeInfo->pvKeyEncryptionAuxInfo = NULL;
encodeInfo->hCryptProv = prov;
if (ret)
ret = CRYPT_ConstructBitBlob(
&encodeInfo->RecipientPublicKey,
&cert->SubjectPublicKeyInfo.PublicKey);
if (ret)
ret = CRYPT_ConstructBlob(
&encodeInfo->RecipientId.u.IssuerSerialNumber.Issuer,
&cert->Issuer);
if (ret)
ret = CRYPT_ConstructBlob(
&encodeInfo->RecipientId.u.IssuerSerialNumber.SerialNumber,
&cert->SerialNumber);
}
else
ret = FALSE;
}
}
else
ret = FALSE;
}
info->pfnAlloc = mem_alloc;
info->pfnFree = mem_free;
return ret;
}
static void CContentEncryptInfo_Free(CMSG_CONTENT_ENCRYPT_INFO *info)
{
CryptMemFree(info->ContentEncryptionAlgorithm.pszObjId);
CryptMemFree(info->ContentEncryptionAlgorithm.Parameters.pbData);
if (info->rgCmsRecipients)
{
DWORD i;
for (i = 0; i < info->cRecipients; ++i)
{
CMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO *encodeInfo =
info->rgCmsRecipients[i].u.pKeyTrans;
CryptMemFree(encodeInfo->KeyEncryptionAlgorithm.pszObjId);
CryptMemFree(encodeInfo->KeyEncryptionAlgorithm.Parameters.pbData);
CryptMemFree(encodeInfo->RecipientPublicKey.pbData);
CryptMemFree(
encodeInfo->RecipientId.u.IssuerSerialNumber.Issuer.pbData);
CryptMemFree(
encodeInfo->RecipientId.u.IssuerSerialNumber.SerialNumber.pbData);
CryptMemFree(encodeInfo);
}
CryptMemFree(info->rgCmsRecipients);
}
}
static BOOL CRecipientInfo_Construct(CMSG_KEY_TRANS_RECIPIENT_INFO *info,
const CERT_INFO *cert, CRYPT_DATA_BLOB *key)
{
BOOL ret;
info->dwVersion = CMSG_KEY_TRANS_PKCS_1_5_VERSION;
info->RecipientId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
ret = CRYPT_ConstructBlob(&info->RecipientId.u.IssuerSerialNumber.Issuer,
&cert->Issuer);
if (ret)
ret = CRYPT_ConstructBlob(
&info->RecipientId.u.IssuerSerialNumber.SerialNumber,
&cert->SerialNumber);
if (ret)
ret = CRYPT_ConstructAlgorithmId(&info->KeyEncryptionAlgorithm,
&cert->SubjectPublicKeyInfo.Algorithm);
info->EncryptedKey.cbData = key->cbData;
info->EncryptedKey.pbData = key->pbData;
return ret;
}
static void CRecipientInfo_Free(CMSG_KEY_TRANS_RECIPIENT_INFO *info)
{
CryptMemFree(info->RecipientId.u.IssuerSerialNumber.Issuer.pbData);
CryptMemFree(info->RecipientId.u.IssuerSerialNumber.SerialNumber.pbData);
CryptMemFree(info->KeyEncryptionAlgorithm.pszObjId);
CryptMemFree(info->KeyEncryptionAlgorithm.Parameters.pbData);
CryptMemFree(info->EncryptedKey.pbData);
}
static void CEnvelopedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CEnvelopedEncodeMsg *msg = hCryptMsg;
CryptMemFree(msg->algo.pszObjId);
CryptMemFree(msg->algo.Parameters.pbData);
if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
CryptReleaseContext(msg->prov, 0);
CryptDestroyKey(msg->key);
if (msg->recipientInfo)
{
DWORD i;
for (i = 0; i < msg->cRecipientInfo; ++i)
CRecipientInfo_Free(&msg->recipientInfo[i]);
CryptMemFree(msg->recipientInfo);
}
CryptMemFree(msg->data.pbData);
}
static BOOL CEnvelopedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CEnvelopedEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_BARE_CONTENT_PARAM:
if (msg->base.streamed)
SetLastError(E_INVALIDARG);
else
{
char oid_rsa_data[] = szOID_RSA_data;
CRYPT_ENVELOPED_DATA envelopedData = {
CMSG_ENVELOPED_DATA_PKCS_1_5_VERSION, msg->cRecipientInfo,
msg->recipientInfo, { oid_rsa_data, {
msg->algo.pszObjId,
{ msg->algo.Parameters.cbData, msg->algo.Parameters.pbData }
},
{ msg->data.cbData, msg->data.pbData }
}
};
ret = CRYPT_AsnEncodePKCSEnvelopedData(&envelopedData, pvData,
pcbData);
}
break;
case CMSG_CONTENT_PARAM:
{
CRYPT_CONTENT_INFO info;
ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
&info.Content.cbData);
if (ret)
{
info.Content.pbData = CryptMemAlloc(info.Content.cbData);
if (info.Content.pbData)
{
ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
info.Content.pbData, &info.Content.cbData);
if (ret)
{
char oid_rsa_enveloped[] = szOID_RSA_envelopedData;
info.pszObjId = oid_rsa_enveloped;
ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
}
CryptMemFree(info.Content.pbData);
}
else
ret = FALSE;
}
break;
}
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static BOOL CEnvelopedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CEnvelopedEncodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
if (msg->base.state == MsgStateFinalized)
SetLastError(CRYPT_E_MSG_ERROR);
else if (msg->base.streamed)
{
FIXME("streamed stub\n");
msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
ret = TRUE;
}
else
{
if (!fFinal)
{
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
SetLastError(E_INVALIDARG);
else
SetLastError(CRYPT_E_MSG_ERROR);
}
else
{
if (cbData)
{
DWORD dataLen = cbData;
msg->data.cbData = cbData;
msg->data.pbData = CryptMemAlloc(cbData);
if (msg->data.pbData)
{
memcpy(msg->data.pbData, pbData, cbData);
ret = CryptEncrypt(msg->key, 0, TRUE, 0, msg->data.pbData,
&dataLen, msg->data.cbData);
msg->data.cbData = dataLen;
if (dataLen > cbData)
{
msg->data.pbData = CryptMemRealloc(msg->data.pbData,
dataLen);
if (msg->data.pbData)
{
dataLen = cbData;
ret = CryptEncrypt(msg->key, 0, TRUE, 0,
msg->data.pbData, &dataLen, msg->data.cbData);
}
else
ret = FALSE;
}
if (!ret)
CryptMemFree(msg->data.pbData);
}
else
ret = FALSE;
if (!ret)
{
msg->data.cbData = 0;
msg->data.pbData = NULL;
}
}
else
ret = TRUE;
msg->base.state = MsgStateFinalized;
}
}
return ret;
}
static HCRYPTMSG CEnvelopedEncodeMsg_Open(DWORD dwFlags,
const void *pvMsgEncodeInfo, LPCSTR pszInnerContentObjID,
PCMSG_STREAM_INFO pStreamInfo)
{
CEnvelopedEncodeMsg *msg;
const CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS *info = pvMsgEncodeInfo;
HCRYPTPROV prov;
ALG_ID algID;
if (info->cbSize != sizeof(CMSG_ENVELOPED_ENCODE_INFO) &&
info->cbSize != sizeof(CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS))
{
SetLastError(E_INVALIDARG);
return NULL;
}
if (info->cbSize == sizeof(CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS))
FIXME("CMS fields unsupported\n");
if (!(algID = CertOIDToAlgId(info->ContentEncryptionAlgorithm.pszObjId)))
{
SetLastError(CRYPT_E_UNKNOWN_ALGO);
return NULL;
}
if (info->cRecipients && !info->rgpRecipientCert)
{
SetLastError(E_INVALIDARG);
return NULL;
}
if (info->hCryptProv)
prov = info->hCryptProv;
else
{
prov = CRYPT_GetDefaultProvider();
dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
}
msg = CryptMemAlloc(sizeof(CEnvelopedEncodeMsg));
if (msg)
{
CRYPT_DATA_BLOB encryptedKey = { 0, NULL };
CMSG_CONTENT_ENCRYPT_INFO encryptInfo;
BOOL ret;
DWORD i;
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CEnvelopedEncodeMsg_Close, CEnvelopedEncodeMsg_GetParam,
CEnvelopedEncodeMsg_Update, CRYPT_DefaultMsgControl);
ret = CRYPT_ConstructAlgorithmId(&msg->algo,
&info->ContentEncryptionAlgorithm);
msg->prov = prov;
msg->data.cbData = 0;
msg->data.pbData = NULL;
msg->cRecipientInfo = info->cRecipients;
msg->recipientInfo = CryptMemAlloc(info->cRecipients *
sizeof(CMSG_KEY_TRANS_RECIPIENT_INFO));
if (!msg->recipientInfo)
ret = FALSE;
memset(&encryptInfo, 0, sizeof(encryptInfo));
if (ret)
{
ret = CContentEncryptInfo_Construct(&encryptInfo, info, prov);
if (ret)
{
ret = CRYPT_GenKey(&encryptInfo, algID);
if (ret)
msg->key = encryptInfo.hContentEncryptKey;
}
}
for (i = 0; ret && i < msg->cRecipientInfo; ++i)
{
ret = CRYPT_ExportEncryptedKey(&encryptInfo, i, &encryptedKey);
if (ret)
ret = CRecipientInfo_Construct(&msg->recipientInfo[i],
info->rgpRecipientCert[i], &encryptedKey);
}
CContentEncryptInfo_Free(&encryptInfo);
if (!ret)
{
CryptMsgClose(msg);
msg = NULL;
}
}
if (!msg && (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG))
CryptReleaseContext(prov, 0);
return msg;
}
HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
PCMSG_STREAM_INFO pStreamInfo)
{
HCRYPTMSG msg = NULL;
TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
{
SetLastError(E_INVALIDARG);
return NULL;
}
switch (dwMsgType)
{
case CMSG_DATA:
msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
pszInnerContentObjID, pStreamInfo);
break;
case CMSG_HASHED:
msg = CHashEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
pszInnerContentObjID, pStreamInfo);
break;
case CMSG_SIGNED:
msg = CSignedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
pszInnerContentObjID, pStreamInfo);
break;
case CMSG_ENVELOPED:
msg = CEnvelopedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
pszInnerContentObjID, pStreamInfo);
break;
case CMSG_SIGNED_AND_ENVELOPED:
case CMSG_ENCRYPTED:
/* defined but invalid, fall through */
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return msg;
}
typedef struct _CEnvelopedDecodeMsg
{
CRYPT_ENVELOPED_DATA *data;
HCRYPTPROV crypt_prov;
CRYPT_DATA_BLOB content;
BOOL decrypted;
} CEnvelopedDecodeMsg;
typedef struct _CDecodeMsg
{
CryptMsgBase base;
DWORD type;
HCRYPTPROV crypt_prov;
union {
HCRYPTHASH hash;
CSignedMsgData signed_data;
CEnvelopedDecodeMsg enveloped_data;
} u;
CRYPT_DATA_BLOB msg_data;
CRYPT_DATA_BLOB detached_data;
PCONTEXT_PROPERTY_LIST properties;
} CDecodeMsg;
static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CDecodeMsg *msg = hCryptMsg;
if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
CryptReleaseContext(msg->crypt_prov, 0);
switch (msg->type)
{
case CMSG_HASHED:
if (msg->u.hash)
CryptDestroyHash(msg->u.hash);
break;
case CMSG_ENVELOPED:
if (msg->u.enveloped_data.crypt_prov)
CryptReleaseContext(msg->u.enveloped_data.crypt_prov, 0);
LocalFree(msg->u.enveloped_data.data);
CryptMemFree(msg->u.enveloped_data.content.pbData);
break;
case CMSG_SIGNED:
if (msg->u.signed_data.info)
{
LocalFree(msg->u.signed_data.info);
CSignedMsgData_CloseHandles(&msg->u.signed_data);
}
break;
}
CryptMemFree(msg->msg_data.pbData);
CryptMemFree(msg->detached_data.pbData);
ContextPropertyList_Free(msg->properties);
}
static BOOL CDecodeMsg_CopyData(CRYPT_DATA_BLOB *blob, const BYTE *pbData,
DWORD cbData)
{
BOOL ret = TRUE;
if (cbData)
{
if (blob->cbData)
blob->pbData = CryptMemRealloc(blob->pbData,
blob->cbData + cbData);
else
blob->pbData = CryptMemAlloc(cbData);
if (blob->pbData)
{
memcpy(blob->pbData + blob->cbData, pbData, cbData);
blob->cbData += cbData;
}
else
ret = FALSE;
}
return ret;
}
static BOOL CDecodeMsg_DecodeDataContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob)
{
BOOL ret;
CRYPT_DATA_BLOB *data;
DWORD size;
ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
blob->pbData, blob->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &data, &size);
if (ret)
{
ret = ContextPropertyList_SetProperty(msg->properties,
CMSG_CONTENT_PARAM, data->pbData, data->cbData);
LocalFree(data);
}
return ret;
}
static void CDecodeMsg_SaveAlgorithmID(CDecodeMsg *msg, DWORD param,
const CRYPT_ALGORITHM_IDENTIFIER *id)
{
static const BYTE nullParams[] = { ASN_NULL, 0 };
CRYPT_ALGORITHM_IDENTIFIER *copy;
DWORD len = sizeof(CRYPT_ALGORITHM_IDENTIFIER);
/* Linearize algorithm id */
len += strlen(id->pszObjId) + 1;
len += id->Parameters.cbData;
copy = CryptMemAlloc(len);
if (copy)
{
copy->pszObjId =
(LPSTR)((BYTE *)copy + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
strcpy(copy->pszObjId, id->pszObjId);
copy->Parameters.pbData = (BYTE *)copy->pszObjId + strlen(id->pszObjId)
+ 1;
/* Trick: omit NULL parameters */
if (id->Parameters.cbData == sizeof(nullParams) &&
!memcmp(id->Parameters.pbData, nullParams, sizeof(nullParams)))
{
copy->Parameters.cbData = 0;
len -= sizeof(nullParams);
}
else
copy->Parameters.cbData = id->Parameters.cbData;
if (copy->Parameters.cbData)
memcpy(copy->Parameters.pbData, id->Parameters.pbData,
id->Parameters.cbData);
ContextPropertyList_SetProperty(msg->properties, param, (BYTE *)copy,
len);
CryptMemFree(copy);
}
}
static inline void CRYPT_FixUpAlgorithmID(CRYPT_ALGORITHM_IDENTIFIER *id)
{
id->pszObjId = (LPSTR)((BYTE *)id + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
id->Parameters.pbData = (BYTE *)id->pszObjId + strlen(id->pszObjId) + 1;
}
static BOOL CDecodeMsg_DecodeHashedContent(CDecodeMsg *msg,
const CRYPT_DER_BLOB *blob)
{
BOOL ret;
CRYPT_DIGESTED_DATA *digestedData;
DWORD size;
ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
&size);
if (ret)
{
ContextPropertyList_SetProperty(msg->properties, CMSG_VERSION_PARAM,
(const BYTE *)&digestedData->version, sizeof(digestedData->version));
CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
&digestedData->DigestAlgorithm);
ContextPropertyList_SetProperty(msg->properties,
CMSG_INNER_CONTENT_TYPE_PARAM,
(const BYTE *)digestedData->ContentInfo.pszObjId,
digestedData->ContentInfo.pszObjId ?
strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
if (!(msg->base.open_flags & CMSG_DETACHED_FLAG))
{
if (digestedData->ContentInfo.Content.cbData)
CDecodeMsg_DecodeDataContent(msg,
&digestedData->ContentInfo.Content);
else
ContextPropertyList_SetProperty(msg->properties,
CMSG_CONTENT_PARAM, NULL, 0);
}
ContextPropertyList_SetProperty(msg->properties, CMSG_HASH_DATA_PARAM,
digestedData->hash.pbData, digestedData->hash.cbData);
LocalFree(digestedData);
}
return ret;
}
static BOOL CDecodeMsg_DecodeEnvelopedContent(CDecodeMsg *msg,
const CRYPT_DER_BLOB *blob)
{
BOOL ret;
CRYPT_ENVELOPED_DATA *envelopedData;
DWORD size;
ret = CRYPT_AsnDecodePKCSEnvelopedData(blob->pbData, blob->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_ENVELOPED_DATA *)&envelopedData,
&size);
if (ret)
msg->u.enveloped_data.data = envelopedData;
return ret;
}
static BOOL CDecodeMsg_DecodeSignedContent(CDecodeMsg *msg,
const CRYPT_DER_BLOB *blob)
{
BOOL ret;
CRYPT_SIGNED_INFO *signedInfo;
DWORD size;
ret = CRYPT_AsnDecodeCMSSignedInfo(blob->pbData, blob->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_SIGNED_INFO *)&signedInfo,
&size);
if (ret)
msg->u.signed_data.info = signedInfo;
return ret;
}
/* Decodes the content in blob as the type given, and updates the value
* (type, parameters, etc.) of msg based on what blob contains.
* It doesn't just use msg's type, to allow a recursive call from an implicitly
* typed message once the outer content info has been decoded.
*/
static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob,
DWORD type)
{
BOOL ret;
switch (type)
{
case CMSG_DATA:
if ((ret = CDecodeMsg_DecodeDataContent(msg, blob)))
msg->type = CMSG_DATA;
break;
case CMSG_HASHED:
if ((ret = CDecodeMsg_DecodeHashedContent(msg, blob)))
msg->type = CMSG_HASHED;
break;
case CMSG_ENVELOPED:
if ((ret = CDecodeMsg_DecodeEnvelopedContent(msg, blob)))
msg->type = CMSG_ENVELOPED;
break;
case CMSG_SIGNED:
if ((ret = CDecodeMsg_DecodeSignedContent(msg, blob)))
msg->type = CMSG_SIGNED;
break;
default:
{
CRYPT_CONTENT_INFO *info;
DWORD size;
ret = CryptDecodeObjectEx(X509_ASN_ENCODING, PKCS_CONTENT_INFO,
msg->msg_data.pbData, msg->msg_data.cbData, CRYPT_DECODE_ALLOC_FLAG,
NULL, &info, &size);
if (ret)
{
if (!strcmp(info->pszObjId, szOID_RSA_data))
ret = CDecodeMsg_DecodeContent(msg, &info->Content, CMSG_DATA);
else if (!strcmp(info->pszObjId, szOID_RSA_digestedData))
ret = CDecodeMsg_DecodeContent(msg, &info->Content,
CMSG_HASHED);
else if (!strcmp(info->pszObjId, szOID_RSA_envelopedData))
ret = CDecodeMsg_DecodeContent(msg, &info->Content,
CMSG_ENVELOPED);
else if (!strcmp(info->pszObjId, szOID_RSA_signedData))
ret = CDecodeMsg_DecodeContent(msg, &info->Content,
CMSG_SIGNED);
else
{
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
ret = FALSE;
}
LocalFree(info);
}
}
}
return ret;
}
static BOOL CDecodeMsg_FinalizeHashedContent(CDecodeMsg *msg,
CRYPT_DER_BLOB *blob)
{
CRYPT_ALGORITHM_IDENTIFIER *hashAlgoID = NULL;
DWORD size = 0;
ALG_ID algID = 0;
BOOL ret;
CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, NULL, &size);
hashAlgoID = CryptMemAlloc(size);
ret = CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, hashAlgoID,
&size);
if (ret)
algID = CertOIDToAlgId(hashAlgoID->pszObjId);
ret = CryptCreateHash(msg->crypt_prov, algID, 0, 0, &msg->u.hash);
if (ret)
{
CRYPT_DATA_BLOB content;
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
{
/* Unlike for non-detached messages, the data were never stored as
* the content param, but were saved in msg->detached_data instead.
*/
content.pbData = msg->detached_data.pbData;
content.cbData = msg->detached_data.cbData;
}
else
ret = ContextPropertyList_FindProperty(msg->properties,
CMSG_CONTENT_PARAM, &content);
if (ret)
ret = CryptHashData(msg->u.hash, content.pbData, content.cbData, 0);
}
CryptMemFree(hashAlgoID);
return ret;
}
static BOOL CDecodeMsg_FinalizeEnvelopedContent(CDecodeMsg *msg,
CRYPT_DER_BLOB *blob)
{
CRYPT_DATA_BLOB *content;
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
content = &msg->detached_data;
else
content =
&msg->u.enveloped_data.data->encryptedContentInfo.encryptedContent;
return CRYPT_ConstructBlob(&msg->u.enveloped_data.content, content);
}
static BOOL CDecodeMsg_FinalizeSignedContent(CDecodeMsg *msg,
CRYPT_DER_BLOB *blob)
{
BOOL ret;
DWORD i, size;
ret = CSignedMsgData_AllocateHandles(&msg->u.signed_data);
for (i = 0; ret && i < msg->u.signed_data.info->cSignerInfo; i++)
ret = CSignedMsgData_ConstructSignerHandles(&msg->u.signed_data, i,
msg->crypt_prov);
if (ret)
{
CRYPT_DATA_BLOB *content;
/* Now that we have all the content, update the hash handles with
* it. If the message is a detached message, the content is stored
* in msg->detached_data rather than in the signed message's
* content.
*/
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
content = &msg->detached_data;
else
content = &msg->u.signed_data.info->content.Content;
if (content->cbData)
{
/* If the message is not detached, have to decode the message's
* content if the type is szOID_RSA_data.
*/
if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) &&
!strcmp(msg->u.signed_data.info->content.pszObjId,
szOID_RSA_data))
{
CRYPT_DATA_BLOB *rsa_blob;
ret = CryptDecodeObjectEx(X509_ASN_ENCODING,
X509_OCTET_STRING, content->pbData, content->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, &rsa_blob, &size);
if (ret)
{
ret = CSignedMsgData_Update(&msg->u.signed_data,
rsa_blob->pbData, rsa_blob->cbData, TRUE, Verify);
LocalFree(rsa_blob);
}
}
else
ret = CSignedMsgData_Update(&msg->u.signed_data,
content->pbData, content->cbData, TRUE, Verify);
}
}
return ret;
}
static BOOL CDecodeMsg_FinalizeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob)
{
BOOL ret = FALSE;
switch (msg->type)
{
case CMSG_HASHED:
ret = CDecodeMsg_FinalizeHashedContent(msg, blob);
break;
case CMSG_ENVELOPED:
ret = CDecodeMsg_FinalizeEnvelopedContent(msg, blob);
break;
case CMSG_SIGNED:
ret = CDecodeMsg_FinalizeSignedContent(msg, blob);
break;
default:
ret = TRUE;
}
return ret;
}
static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CDecodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
if (msg->base.state == MsgStateFinalized)
SetLastError(CRYPT_E_MSG_ERROR);
else if (msg->base.streamed)
{
FIXME("(%p, %p, %d, %d): streamed update stub\n", hCryptMsg, pbData,
cbData, fFinal);
switch (msg->base.state)
{
case MsgStateInit:
ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
if (fFinal)
{
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
msg->base.state = MsgStateDataFinalized;
else
msg->base.state = MsgStateFinalized;
}
else
msg->base.state = MsgStateUpdated;
break;
case MsgStateUpdated:
ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
if (fFinal)
{
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
msg->base.state = MsgStateDataFinalized;
else
msg->base.state = MsgStateFinalized;
}
break;
case MsgStateDataFinalized:
ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
if (fFinal)
msg->base.state = MsgStateFinalized;
break;
default:
SetLastError(CRYPT_E_MSG_ERROR);
break;
}
}
else
{
if (!fFinal)
SetLastError(CRYPT_E_MSG_ERROR);
else
{
switch (msg->base.state)
{
case MsgStateInit:
ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
msg->base.state = MsgStateDataFinalized;
else
msg->base.state = MsgStateFinalized;
break;
case MsgStateDataFinalized:
ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
msg->base.state = MsgStateFinalized;
break;
default:
SetLastError(CRYPT_E_MSG_ERROR);
}
}
}
if (ret && fFinal &&
((msg->base.open_flags & CMSG_DETACHED_FLAG && msg->base.state ==
MsgStateDataFinalized) ||
(!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->base.state ==
MsgStateFinalized)))
ret = CDecodeMsg_DecodeContent(msg, &msg->msg_data, msg->type);
if (ret && msg->base.state == MsgStateFinalized)
ret = CDecodeMsg_FinalizeContent(msg, &msg->msg_data);
return ret;
}
static BOOL CDecodeHashMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_TYPE_PARAM:
ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
break;
case CMSG_HASH_ALGORITHM_PARAM:
{
CRYPT_DATA_BLOB blob;
ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
&blob);
if (ret)
{
ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
if (ret && pvData)
CRYPT_FixUpAlgorithmID(pvData);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
}
case CMSG_COMPUTED_HASH_PARAM:
ret = CryptGetHashParam(msg->u.hash, HP_HASHVAL, pvData, pcbData, 0);
break;
default:
{
CRYPT_DATA_BLOB blob;
ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
&blob);
if (ret)
ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
}
return ret;
}
/* nextData is an in/out parameter - on input it's the memory location in
* which a copy of in's data should be made, and on output it's the memory
* location immediately after out's copy of in's data.
*/
static inline void CRYPT_CopyBlob(CRYPT_DATA_BLOB *out,
const CRYPT_DATA_BLOB *in, LPBYTE *nextData)
{
out->cbData = in->cbData;
if (in->cbData)
{
out->pbData = *nextData;
memcpy(out->pbData, in->pbData, in->cbData);
*nextData += in->cbData;
}
}
static inline void CRYPT_CopyAlgorithmId(CRYPT_ALGORITHM_IDENTIFIER *out,
const CRYPT_ALGORITHM_IDENTIFIER *in, LPBYTE *nextData)
{
if (in->pszObjId)
{
out->pszObjId = (LPSTR)*nextData;
strcpy(out->pszObjId, in->pszObjId);
*nextData += strlen(out->pszObjId) + 1;
}
CRYPT_CopyBlob(&out->Parameters, &in->Parameters, nextData);
}
static inline void CRYPT_CopyAttributes(CRYPT_ATTRIBUTES *out,
const CRYPT_ATTRIBUTES *in, LPBYTE *nextData)
{
out->cAttr = in->cAttr;
if (in->cAttr)
{
DWORD i;
*nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
out->rgAttr = (CRYPT_ATTRIBUTE *)*nextData;
*nextData += in->cAttr * sizeof(CRYPT_ATTRIBUTE);
for (i = 0; i < in->cAttr; i++)
{
if (in->rgAttr[i].pszObjId)
{
out->rgAttr[i].pszObjId = (LPSTR)*nextData;
strcpy(out->rgAttr[i].pszObjId, in->rgAttr[i].pszObjId);
*nextData += strlen(in->rgAttr[i].pszObjId) + 1;
}
if (in->rgAttr[i].cValue)
{
DWORD j;
out->rgAttr[i].cValue = in->rgAttr[i].cValue;
*nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
out->rgAttr[i].rgValue = (PCRYPT_DATA_BLOB)*nextData;
*nextData += in->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
for (j = 0; j < in->rgAttr[i].cValue; j++)
CRYPT_CopyBlob(&out->rgAttr[i].rgValue[j],
&in->rgAttr[i].rgValue[j], nextData);
}
}
}
}
static DWORD CRYPT_SizeOfAttributes(const CRYPT_ATTRIBUTES *attr)
{
DWORD size = attr->cAttr * sizeof(CRYPT_ATTRIBUTE), i, j;
for (i = 0; i < attr->cAttr; i++)
{
if (attr->rgAttr[i].pszObjId)
size += strlen(attr->rgAttr[i].pszObjId) + 1;
/* align pointer */
size = ALIGN_DWORD_PTR(size);
size += attr->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
for (j = 0; j < attr->rgAttr[i].cValue; j++)
size += attr->rgAttr[i].rgValue[j].cbData;
}
/* align pointer again to be conservative */
size = ALIGN_DWORD_PTR(size);
return size;
}
static DWORD CRYPT_SizeOfKeyIdAsIssuerAndSerial(const CRYPT_DATA_BLOB *keyId)
{
static char oid_key_rdn[] = szOID_KEYID_RDN;
DWORD size = 0;
CERT_RDN_ATTR attr;
CERT_RDN rdn = { 1, &attr };
CERT_NAME_INFO name = { 1, &rdn };
attr.pszObjId = oid_key_rdn;
attr.dwValueType = CERT_RDN_OCTET_STRING;
attr.Value.cbData = keyId->cbData;
attr.Value.pbData = keyId->pbData;
if (CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, NULL, &size))
size++; /* Only include size of special zero serial number on success */
return size;
}
static BOOL CRYPT_CopyKeyIdAsIssuerAndSerial(CERT_NAME_BLOB *issuer,
CRYPT_INTEGER_BLOB *serialNumber, const CRYPT_DATA_BLOB *keyId, DWORD encodedLen,
LPBYTE *nextData)
{
static char oid_key_rdn[] = szOID_KEYID_RDN;
CERT_RDN_ATTR attr;
CERT_RDN rdn = { 1, &attr };
CERT_NAME_INFO name = { 1, &rdn };
BOOL ret;
/* Encode special zero serial number */
serialNumber->cbData = 1;
serialNumber->pbData = *nextData;
**nextData = 0;
(*nextData)++;
/* Encode issuer */
issuer->pbData = *nextData;
attr.pszObjId = oid_key_rdn;
attr.dwValueType = CERT_RDN_OCTET_STRING;
attr.Value.cbData = keyId->cbData;
attr.Value.pbData = keyId->pbData;
ret = CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, *nextData,
&encodedLen);
if (ret)
{
*nextData += encodedLen;
issuer->cbData = encodedLen;
}
return ret;
}
static BOOL CRYPT_CopySignerInfo(void *pvData, DWORD *pcbData,
const CMSG_CMS_SIGNER_INFO *in)
{
DWORD size = sizeof(CMSG_SIGNER_INFO), rdnSize = 0;
BOOL ret;
TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
}
else
{
rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
size += rdnSize;
}
if (in->HashAlgorithm.pszObjId)
size += strlen(in->HashAlgorithm.pszObjId) + 1;
size += in->HashAlgorithm.Parameters.cbData;
if (in->HashEncryptionAlgorithm.pszObjId)
size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
size += in->HashEncryptionAlgorithm.Parameters.cbData;
size += in->EncryptedHash.cbData;
/* align pointer */
size = ALIGN_DWORD_PTR(size);
size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
if (!pvData)
{
*pcbData = size;
ret = TRUE;
}
else if (*pcbData < size)
{
*pcbData = size;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_SIGNER_INFO);
CMSG_SIGNER_INFO *out = pvData;
ret = TRUE;
out->dwVersion = in->dwVersion;
if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
CRYPT_CopyBlob(&out->Issuer,
&in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
CRYPT_CopyBlob(&out->SerialNumber,
&in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
}
else
ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
&in->SignerId.u.KeyId, rdnSize, &nextData);
if (ret)
{
CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
&nextData);
CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
&in->HashEncryptionAlgorithm, &nextData);
CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
nextData = POINTER_ALIGN_DWORD_PTR(nextData);
CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
}
}
TRACE("returning %d\n", ret);
return ret;
}
static BOOL CRYPT_CopyCMSSignerInfo(void *pvData, DWORD *pcbData,
const CMSG_CMS_SIGNER_INFO *in)
{
DWORD size = sizeof(CMSG_CMS_SIGNER_INFO);
BOOL ret;
TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
}
else
size += in->SignerId.u.KeyId.cbData;
if (in->HashAlgorithm.pszObjId)
size += strlen(in->HashAlgorithm.pszObjId) + 1;
size += in->HashAlgorithm.Parameters.cbData;
if (in->HashEncryptionAlgorithm.pszObjId)
size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
size += in->HashEncryptionAlgorithm.Parameters.cbData;
size += in->EncryptedHash.cbData;
/* align pointer */
size = ALIGN_DWORD_PTR(size);
size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
if (!pvData)
{
*pcbData = size;
ret = TRUE;
}
else if (*pcbData < size)
{
*pcbData = size;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_CMS_SIGNER_INFO);
CMSG_CMS_SIGNER_INFO *out = pvData;
out->dwVersion = in->dwVersion;
out->SignerId.dwIdChoice = in->SignerId.dwIdChoice;
if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.Issuer,
&in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.SerialNumber,
&in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
}
else
CRYPT_CopyBlob(&out->SignerId.u.KeyId, &in->SignerId.u.KeyId, &nextData);
CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
&nextData);
CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
&in->HashEncryptionAlgorithm, &nextData);
CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
nextData = POINTER_ALIGN_DWORD_PTR(nextData);
CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
ret = TRUE;
}
TRACE("returning %d\n", ret);
return ret;
}
static BOOL CRYPT_CopySignerCertInfo(void *pvData, DWORD *pcbData,
const CMSG_CMS_SIGNER_INFO *in)
{
DWORD size = sizeof(CERT_INFO), rdnSize = 0;
BOOL ret;
TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
}
else
{
rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
size += rdnSize;
}
if (!pvData)
{
*pcbData = size;
ret = TRUE;
}
else if (*pcbData < size)
{
*pcbData = size;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
LPBYTE nextData = (BYTE *)pvData + sizeof(CERT_INFO);
CERT_INFO *out = pvData;
memset(out, 0, sizeof(CERT_INFO));
if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
CRYPT_CopyBlob(&out->Issuer,
&in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
CRYPT_CopyBlob(&out->SerialNumber,
&in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
ret = TRUE;
}
else
ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
&in->SignerId.u.KeyId, rdnSize, &nextData);
}
TRACE("returning %d\n", ret);
return ret;
}
static BOOL CRYPT_CopyRecipientInfo(void *pvData, DWORD *pcbData,
const CERT_ISSUER_SERIAL_NUMBER *in)
{
DWORD size = sizeof(CERT_INFO);
BOOL ret;
TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
size += in->SerialNumber.cbData;
size += in->Issuer.cbData;
if (!pvData)
{
*pcbData = size;
ret = TRUE;
}
else if (*pcbData < size)
{
*pcbData = size;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
LPBYTE nextData = (BYTE *)pvData + sizeof(CERT_INFO);
CERT_INFO *out = pvData;
CRYPT_CopyBlob(&out->SerialNumber, &in->SerialNumber, &nextData);
CRYPT_CopyBlob(&out->Issuer, &in->Issuer, &nextData);
ret = TRUE;
}
TRACE("returning %d\n", ret);
return ret;
}
static BOOL CDecodeEnvelopedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_TYPE_PARAM:
ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
break;
case CMSG_CONTENT_PARAM:
if (msg->u.enveloped_data.data)
ret = CRYPT_CopyParam(pvData, pcbData,
msg->u.enveloped_data.content.pbData,
msg->u.enveloped_data.content.cbData);
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_RECIPIENT_COUNT_PARAM:
if (msg->u.enveloped_data.data)
ret = CRYPT_CopyParam(pvData, pcbData,
&msg->u.enveloped_data.data->cRecipientInfo, sizeof(DWORD));
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_RECIPIENT_INFO_PARAM:
if (msg->u.enveloped_data.data)
{
if (dwIndex < msg->u.enveloped_data.data->cRecipientInfo)
{
PCMSG_KEY_TRANS_RECIPIENT_INFO recipientInfo =
&msg->u.enveloped_data.data->rgRecipientInfo[dwIndex];
ret = CRYPT_CopyRecipientInfo(pvData, pcbData,
&recipientInfo->RecipientId.u.IssuerSerialNumber);
}
else
SetLastError(CRYPT_E_INVALID_INDEX);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
default:
FIXME("unimplemented for %d\n", dwParamType);
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static BOOL CDecodeSignedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_TYPE_PARAM:
ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
break;
case CMSG_CONTENT_PARAM:
if (msg->u.signed_data.info)
{
if (!strcmp(msg->u.signed_data.info->content.pszObjId,
szOID_RSA_data))
{
CRYPT_DATA_BLOB *blob;
DWORD size;
ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
msg->u.signed_data.info->content.Content.pbData,
msg->u.signed_data.info->content.Content.cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, &blob, &size);
if (ret)
{
ret = CRYPT_CopyParam(pvData, pcbData, blob->pbData,
blob->cbData);
LocalFree(blob);
}
}
else
ret = CRYPT_CopyParam(pvData, pcbData,
msg->u.signed_data.info->content.Content.pbData,
msg->u.signed_data.info->content.Content.cbData);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_INNER_CONTENT_TYPE_PARAM:
if (msg->u.signed_data.info)
ret = CRYPT_CopyParam(pvData, pcbData,
msg->u.signed_data.info->content.pszObjId,
strlen(msg->u.signed_data.info->content.pszObjId) + 1);
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_SIGNER_COUNT_PARAM:
if (msg->u.signed_data.info)
ret = CRYPT_CopyParam(pvData, pcbData,
&msg->u.signed_data.info->cSignerInfo, sizeof(DWORD));
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_SIGNER_INFO_PARAM:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CRYPT_CopySignerInfo(pvData, pcbData,
&msg->u.signed_data.info->rgSignerInfo[dwIndex]);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_SIGNER_CERT_INFO_PARAM:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CRYPT_CopySignerCertInfo(pvData, pcbData,
&msg->u.signed_data.info->rgSignerInfo[dwIndex]);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_CERT_COUNT_PARAM:
if (msg->u.signed_data.info)
ret = CRYPT_CopyParam(pvData, pcbData,
&msg->u.signed_data.info->cCertEncoded, sizeof(DWORD));
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_CERT_PARAM:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.info->cCertEncoded)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CRYPT_CopyParam(pvData, pcbData,
msg->u.signed_data.info->rgCertEncoded[dwIndex].pbData,
msg->u.signed_data.info->rgCertEncoded[dwIndex].cbData);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_CRL_COUNT_PARAM:
if (msg->u.signed_data.info)
ret = CRYPT_CopyParam(pvData, pcbData,
&msg->u.signed_data.info->cCrlEncoded, sizeof(DWORD));
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_CRL_PARAM:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.info->cCrlEncoded)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CRYPT_CopyParam(pvData, pcbData,
msg->u.signed_data.info->rgCrlEncoded[dwIndex].pbData,
msg->u.signed_data.info->rgCrlEncoded[dwIndex].cbData);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_COMPUTED_HASH_PARAM:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.cSignerHandle)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CryptGetHashParam(
msg->u.signed_data.signerHandles[dwIndex].contentHash,
HP_HASHVAL, pvData, pcbData, 0);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_ENCODED_SIGNER:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CryptEncodeObjectEx(
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, CMS_SIGNER_INFO,
&msg->u.signed_data.info->rgSignerInfo[dwIndex], 0, NULL,
pvData, pcbData);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_ATTR_CERT_COUNT_PARAM:
if (msg->u.signed_data.info)
{
DWORD attrCertCount = 0;
ret = CRYPT_CopyParam(pvData, pcbData,
&attrCertCount, sizeof(DWORD));
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_ATTR_CERT_PARAM:
if (msg->u.signed_data.info)
SetLastError(CRYPT_E_INVALID_INDEX);
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
case CMSG_CMS_SIGNER_INFO_PARAM:
if (msg->u.signed_data.info)
{
if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
SetLastError(CRYPT_E_INVALID_INDEX);
else
ret = CRYPT_CopyCMSSignerInfo(pvData, pcbData,
&msg->u.signed_data.info->rgSignerInfo[dwIndex]);
}
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
break;
default:
FIXME("unimplemented for %d\n", dwParamType);
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CDecodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
switch (msg->type)
{
case CMSG_HASHED:
ret = CDecodeHashMsg_GetParam(msg, dwParamType, dwIndex, pvData,
pcbData);
break;
case CMSG_ENVELOPED:
ret = CDecodeEnvelopedMsg_GetParam(msg, dwParamType, dwIndex, pvData,
pcbData);
break;
case CMSG_SIGNED:
ret = CDecodeSignedMsg_GetParam(msg, dwParamType, dwIndex, pvData,
pcbData);
break;
default:
switch (dwParamType)
{
case CMSG_TYPE_PARAM:
ret = CRYPT_CopyParam(pvData, pcbData, &msg->type,
sizeof(msg->type));
break;
default:
{
CRYPT_DATA_BLOB blob;
ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
&blob);
if (ret)
ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData,
blob.cbData);
else
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
}
}
return ret;
}
static BOOL CDecodeHashMsg_VerifyHash(CDecodeMsg *msg)
{
BOOL ret;
CRYPT_DATA_BLOB hashBlob;
ret = ContextPropertyList_FindProperty(msg->properties,
CMSG_HASH_DATA_PARAM, &hashBlob);
if (ret)
{
DWORD computedHashSize = 0;
ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0, NULL,
&computedHashSize);
if (hashBlob.cbData == computedHashSize)
{
LPBYTE computedHash = CryptMemAlloc(computedHashSize);
if (computedHash)
{
ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0,
computedHash, &computedHashSize);
if (ret)
{
if (memcmp(hashBlob.pbData, computedHash, hashBlob.cbData))
{
SetLastError(CRYPT_E_HASH_VALUE);
ret = FALSE;
}
}
CryptMemFree(computedHash);
}
else
{
SetLastError(ERROR_OUTOFMEMORY);
ret = FALSE;
}
}
else
{
SetLastError(CRYPT_E_HASH_VALUE);
ret = FALSE;
}
}
return ret;
}
static BOOL CDecodeSignedMsg_VerifySignatureWithKey(CDecodeMsg *msg,
HCRYPTPROV prov, DWORD signerIndex, PCERT_PUBLIC_KEY_INFO keyInfo)
{
HCRYPTKEY key;
BOOL ret;
if (!prov)
prov = msg->crypt_prov;
ret = CryptImportPublicKeyInfo(prov, X509_ASN_ENCODING, keyInfo, &key);
if (ret)
{
HCRYPTHASH hash;
CRYPT_HASH_BLOB reversedHash;
if (msg->u.signed_data.info->rgSignerInfo[signerIndex].AuthAttrs.cAttr)
hash = msg->u.signed_data.signerHandles[signerIndex].authAttrHash;
else
hash = msg->u.signed_data.signerHandles[signerIndex].contentHash;
ret = CRYPT_ConstructBlob(&reversedHash,
&msg->u.signed_data.info->rgSignerInfo[signerIndex].EncryptedHash);
if (ret)
{
CRYPT_ReverseBytes(&reversedHash);
ret = CryptVerifySignatureW(hash, reversedHash.pbData,
reversedHash.cbData, key, NULL, 0);
CryptMemFree(reversedHash.pbData);
}
CryptDestroyKey(key);
}
return ret;
}
static BOOL CDecodeSignedMsg_VerifySignature(CDecodeMsg *msg, PCERT_INFO info)
{
BOOL ret = FALSE;
DWORD i;
if (!msg->u.signed_data.signerHandles)
{
SetLastError(NTE_BAD_SIGNATURE);
return FALSE;
}
for (i = 0; !ret && i < msg->u.signed_data.info->cSignerInfo; i++)
{
PCMSG_CMS_SIGNER_INFO signerInfo =
&msg->u.signed_data.info->rgSignerInfo[i];
if (signerInfo->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
{
ret = CertCompareCertificateName(X509_ASN_ENCODING,
&signerInfo->SignerId.u.IssuerSerialNumber.Issuer,
&info->Issuer);
if (ret)
{
ret = CertCompareIntegerBlob(
&signerInfo->SignerId.u.IssuerSerialNumber.SerialNumber,
&info->SerialNumber);
if (ret)
break;
}
}
else
{
FIXME("signer %d: unimplemented for key id\n", i);
}
}
if (ret)
ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, 0, i,
&info->SubjectPublicKeyInfo);
else
SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
return ret;
}
static BOOL CDecodeSignedMsg_VerifySignatureEx(CDecodeMsg *msg,
PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA para)
{
BOOL ret = FALSE;
if (para->cbSize != sizeof(CMSG_CTRL_VERIFY_SIGNATURE_EX_PARA))
SetLastError(ERROR_INVALID_PARAMETER);
else if (para->dwSignerIndex >= msg->u.signed_data.info->cSignerInfo)
SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
else if (!msg->u.signed_data.signerHandles)
SetLastError(NTE_BAD_SIGNATURE);
else
{
switch (para->dwSignerType)
{
case CMSG_VERIFY_SIGNER_PUBKEY:
ret = CDecodeSignedMsg_VerifySignatureWithKey(msg,
para->hCryptProv, para->dwSignerIndex, para->pvSigner);
break;
case CMSG_VERIFY_SIGNER_CERT:
{
PCCERT_CONTEXT cert = para->pvSigner;
ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, para->hCryptProv,
para->dwSignerIndex, &cert->pCertInfo->SubjectPublicKeyInfo);
break;
}
default:
FIXME("unimplemented for signer type %d\n", para->dwSignerType);
SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
}
}
return ret;
}
static BOOL WINAPI CRYPT_ImportKeyTrans(
PCRYPT_ALGORITHM_IDENTIFIER pContentEncryptionAlgorithm,
PCMSG_CTRL_KEY_TRANS_DECRYPT_PARA pKeyTransDecryptPara, DWORD dwFlags,
void *pvReserved, HCRYPTKEY *phContentEncryptKey)
{
BOOL ret;
HCRYPTKEY key;
ret = CryptGetUserKey(pKeyTransDecryptPara->hCryptProv,
pKeyTransDecryptPara->dwKeySpec ? pKeyTransDecryptPara->dwKeySpec :
AT_KEYEXCHANGE, &key);
if (ret)
{
CMSG_KEY_TRANS_RECIPIENT_INFO *info =
&pKeyTransDecryptPara->pKeyTrans[pKeyTransDecryptPara->dwRecipientIndex];
CRYPT_DATA_BLOB *encryptedKey = &info->EncryptedKey;
DWORD size = encryptedKey->cbData + sizeof(BLOBHEADER) + sizeof(ALG_ID);
BYTE *keyBlob = CryptMemAlloc(size);
if (keyBlob)
{
DWORD i, k = size - 1;
BLOBHEADER *blobHeader = (BLOBHEADER *)keyBlob;
ALG_ID *algID = (ALG_ID *)(keyBlob + sizeof(BLOBHEADER));
blobHeader->bType = SIMPLEBLOB;
blobHeader->bVersion = CUR_BLOB_VERSION;
blobHeader->reserved = 0;
blobHeader->aiKeyAlg = CertOIDToAlgId(
pContentEncryptionAlgorithm->pszObjId);
*algID = CertOIDToAlgId(info->KeyEncryptionAlgorithm.pszObjId);
for (i = 0; i < encryptedKey->cbData; ++i, --k)
keyBlob[k] = encryptedKey->pbData[i];
ret = CryptImportKey(pKeyTransDecryptPara->hCryptProv, keyBlob,
size, key, 0, phContentEncryptKey);
CryptMemFree(keyBlob);
}
else
ret = FALSE;
CryptDestroyKey(key);
}
return ret;
}
static BOOL CRYPT_ImportEncryptedKey(PCRYPT_ALGORITHM_IDENTIFIER contEncrAlg,
PCMSG_CTRL_DECRYPT_PARA para, PCMSG_KEY_TRANS_RECIPIENT_INFO info,
HCRYPTKEY *key)
{
static HCRYPTOIDFUNCSET set = NULL;
PFN_CMSG_IMPORT_KEY_TRANS importKeyFunc = NULL;
HCRYPTOIDFUNCADDR hFunc = NULL;
CMSG_CTRL_KEY_TRANS_DECRYPT_PARA decryptPara;
BOOL ret;
memset(&decryptPara, 0, sizeof(decryptPara));
decryptPara.cbSize = sizeof(decryptPara);
decryptPara.hCryptProv = para->hCryptProv;
decryptPara.dwKeySpec = para->dwKeySpec;
decryptPara.pKeyTrans = info;
decryptPara.dwRecipientIndex = para->dwRecipientIndex;
if (!set)
set = CryptInitOIDFunctionSet(CMSG_OID_IMPORT_KEY_TRANS_FUNC, 0);
CryptGetOIDFunctionAddress(set, X509_ASN_ENCODING, contEncrAlg->pszObjId, 0,
(void **)&importKeyFunc, &hFunc);
if (!importKeyFunc)
importKeyFunc = CRYPT_ImportKeyTrans;
ret = importKeyFunc(contEncrAlg, &decryptPara, 0, NULL, key);
if (hFunc)
CryptFreeOIDFunctionAddress(hFunc, 0);
return ret;
}
static BOOL CDecodeEnvelopedMsg_CrtlDecrypt(CDecodeMsg *msg,
PCMSG_CTRL_DECRYPT_PARA para)
{
BOOL ret = FALSE;
CEnvelopedDecodeMsg *enveloped_data = &msg->u.enveloped_data;
CRYPT_ENVELOPED_DATA *data = enveloped_data->data;
if (para->cbSize != sizeof(CMSG_CTRL_DECRYPT_PARA))
SetLastError(E_INVALIDARG);
else if (!data)
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
else if (para->dwRecipientIndex >= data->cRecipientInfo)
SetLastError(CRYPT_E_INVALID_INDEX);
else if (enveloped_data->decrypted)
SetLastError(CRYPT_E_ALREADY_DECRYPTED);
else if (!para->hCryptProv)
SetLastError(ERROR_INVALID_PARAMETER);
else if (enveloped_data->content.cbData)
{
HCRYPTKEY key;
ret = CRYPT_ImportEncryptedKey(
&data->encryptedContentInfo.contentEncryptionAlgorithm, para,
data->rgRecipientInfo, &key);
if (ret)
{
ret = CryptDecrypt(key, 0, TRUE, 0, enveloped_data->content.pbData,
&enveloped_data->content.cbData);
CryptDestroyKey(key);
}
}
else
ret = TRUE;
if (ret)
enveloped_data->decrypted = TRUE;
return ret;
}
static BOOL CDecodeMsg_Control(HCRYPTMSG hCryptMsg, DWORD dwFlags,
DWORD dwCtrlType, const void *pvCtrlPara)
{
CDecodeMsg *msg = hCryptMsg;
BOOL ret = FALSE;
switch (dwCtrlType)
{
case CMSG_CTRL_VERIFY_SIGNATURE:
switch (msg->type)
{
case CMSG_SIGNED:
ret = CDecodeSignedMsg_VerifySignature(msg, (PCERT_INFO)pvCtrlPara);
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
break;
case CMSG_CTRL_DECRYPT:
switch (msg->type)
{
case CMSG_ENVELOPED:
ret = CDecodeEnvelopedMsg_CrtlDecrypt(msg,
(PCMSG_CTRL_DECRYPT_PARA)pvCtrlPara);
if (ret && (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG))
msg->u.enveloped_data.crypt_prov =
((PCMSG_CTRL_DECRYPT_PARA)pvCtrlPara)->hCryptProv;
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
break;
case CMSG_CTRL_VERIFY_HASH:
switch (msg->type)
{
case CMSG_HASHED:
ret = CDecodeHashMsg_VerifyHash(msg);
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
break;
case CMSG_CTRL_VERIFY_SIGNATURE_EX:
switch (msg->type)
{
case CMSG_SIGNED:
ret = CDecodeSignedMsg_VerifySignatureEx(msg,
(PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA)pvCtrlPara);
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
break;
default:
SetLastError(CRYPT_E_CONTROL_TYPE);
}
return ret;
}
HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
DWORD dwMsgType, HCRYPTPROV_LEGACY hCryptProv, PCERT_INFO pRecipientInfo,
PCMSG_STREAM_INFO pStreamInfo)
{
CDecodeMsg *msg;
TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
{
SetLastError(E_INVALIDARG);
return NULL;
}
msg = CryptMemAlloc(sizeof(CDecodeMsg));
if (msg)
{
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update,
CDecodeMsg_Control);
msg->type = dwMsgType;
if (hCryptProv)
msg->crypt_prov = hCryptProv;
else
{
msg->crypt_prov = CRYPT_GetDefaultProvider();
msg->base.open_flags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
}
memset(&msg->u, 0, sizeof(msg->u));
msg->msg_data.cbData = 0;
msg->msg_data.pbData = NULL;
msg->detached_data.cbData = 0;
msg->detached_data.pbData = NULL;
msg->properties = ContextPropertyList_Create();
}
return msg;
}
HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
{
TRACE("(%p)\n", hCryptMsg);
if (hCryptMsg)
{
CryptMsgBase *msg = hCryptMsg;
InterlockedIncrement(&msg->ref);
}
return hCryptMsg;
}
BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
{
TRACE("(%p)\n", hCryptMsg);
if (hCryptMsg)
{
CryptMsgBase *msg = hCryptMsg;
if (InterlockedDecrement(&msg->ref) == 0)
{
TRACE("freeing %p\n", msg);
if (msg->close)
msg->close(msg);
CryptMemFree(msg);
}
}
return TRUE;
}
BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CryptMsgBase *msg = hCryptMsg;
TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
return msg->update(hCryptMsg, pbData, cbData, fFinal);
}
BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CryptMsgBase *msg = hCryptMsg;
TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
pvData, pcbData);
return msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
}
BOOL WINAPI CryptMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
DWORD dwCtrlType, const void *pvCtrlPara)
{
CryptMsgBase *msg = hCryptMsg;
TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType,
pvCtrlPara);
return msg->control(hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
}
static CERT_INFO *CRYPT_GetSignerCertInfoFromMsg(HCRYPTMSG msg,
DWORD dwSignerIndex)
{
CERT_INFO *certInfo = NULL;
DWORD size;
if (CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM, dwSignerIndex, NULL,
&size))
{
certInfo = CryptMemAlloc(size);
if (certInfo)
{
if (!CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM,
dwSignerIndex, certInfo, &size))
{
CryptMemFree(certInfo);
certInfo = NULL;
}
}
}
return certInfo;
}
BOOL WINAPI CryptMsgGetAndVerifySigner(HCRYPTMSG hCryptMsg, DWORD cSignerStore,
HCERTSTORE *rghSignerStore, DWORD dwFlags, PCCERT_CONTEXT *ppSigner,
DWORD *pdwSignerIndex)
{
HCERTSTORE store;
DWORD i, signerIndex = 0;
PCCERT_CONTEXT signerCert = NULL;
BOOL ret = FALSE;
TRACE("(%p, %d, %p, %08x, %p, %p)\n", hCryptMsg, cSignerStore,
rghSignerStore, dwFlags, ppSigner, pdwSignerIndex);
/* Clear output parameters */
if (ppSigner)
*ppSigner = NULL;
if (pdwSignerIndex && !(dwFlags & CMSG_USE_SIGNER_INDEX_FLAG))
*pdwSignerIndex = 0;
/* Create store to search for signer certificates */
store = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0,
CERT_STORE_CREATE_NEW_FLAG, NULL);
if (!(dwFlags & CMSG_TRUSTED_SIGNER_FLAG))
{
HCERTSTORE msgStore = CertOpenStore(CERT_STORE_PROV_MSG, 0, 0, 0,
hCryptMsg);
CertAddStoreToCollection(store, msgStore, 0, 0);
CertCloseStore(msgStore, 0);
}
for (i = 0; i < cSignerStore; i++)
CertAddStoreToCollection(store, rghSignerStore[i], 0, 0);
/* Find signer cert */
if (dwFlags & CMSG_USE_SIGNER_INDEX_FLAG)
{
CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
*pdwSignerIndex);
if (signer)
{
signerIndex = *pdwSignerIndex;
signerCert = CertFindCertificateInStore(store, X509_ASN_ENCODING,
0, CERT_FIND_SUBJECT_CERT, signer, NULL);
CryptMemFree(signer);
}
}
else
{
DWORD count, size = sizeof(count);
if (CryptMsgGetParam(hCryptMsg, CMSG_SIGNER_COUNT_PARAM, 0, &count,
&size))
{
for (i = 0; !signerCert && i < count; i++)
{
CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
i);
if (signer)
{
signerCert = CertFindCertificateInStore(store,
X509_ASN_ENCODING, 0, CERT_FIND_SUBJECT_CERT, signer,
NULL);
if (signerCert)
signerIndex = i;
CryptMemFree(signer);
}
}
}
if (!signerCert)
SetLastError(CRYPT_E_NO_TRUSTED_SIGNER);
}
if (signerCert)
{
if (!(dwFlags & CMSG_SIGNER_ONLY_FLAG))
ret = CryptMsgControl(hCryptMsg, 0, CMSG_CTRL_VERIFY_SIGNATURE,
signerCert->pCertInfo);
else
ret = TRUE;
if (ret)
{
if (ppSigner)
*ppSigner = CertDuplicateCertificateContext(signerCert);
if (pdwSignerIndex)
*pdwSignerIndex = signerIndex;
}
CertFreeCertificateContext(signerCert);
}
CertCloseStore(store, 0);
return ret;
}
BOOL WINAPI CryptMsgVerifyCountersignatureEncodedEx(HCRYPTPROV_LEGACY hCryptProv,
DWORD dwEncodingType, PBYTE pbSignerInfo, DWORD cbSignerInfo,
PBYTE pbSignerInfoCountersignature, DWORD cbSignerInfoCountersignature,
DWORD dwSignerType, void *pvSigner, DWORD dwFlags, void *pvReserved)
{
FIXME("(%08lx, %08x, %p, %d, %p, %d, %d, %p, %08x, %p): stub\n", hCryptProv,
dwEncodingType, pbSignerInfo, cbSignerInfo, pbSignerInfoCountersignature,
cbSignerInfoCountersignature, dwSignerType, pvSigner, dwFlags, pvReserved);
return FALSE;
}
BOOL WINAPI CryptMsgEncodeAndSignCTL(DWORD dwMsgEncodingType,
PCTL_INFO pCtlInfo, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
BYTE *pbEncoded, DWORD *pcbEncoded)
{
BOOL ret;
BYTE *pbCtlContent;
DWORD cbCtlContent;
TRACE("(%08x, %p, %p, %08x, %p, %p)\n", dwMsgEncodingType, pCtlInfo,
pSignInfo, dwFlags, pbEncoded, pcbEncoded);
if (dwFlags)
{
FIXME("unimplemented for flags %08x\n", dwFlags);
return FALSE;
}
if ((ret = CryptEncodeObjectEx(dwMsgEncodingType, PKCS_CTL, pCtlInfo,
CRYPT_ENCODE_ALLOC_FLAG, NULL, &pbCtlContent, &cbCtlContent)))
{
ret = CryptMsgSignCTL(dwMsgEncodingType, pbCtlContent, cbCtlContent,
pSignInfo, dwFlags, pbEncoded, pcbEncoded);
LocalFree(pbCtlContent);
}
return ret;
}
BOOL WINAPI CryptMsgSignCTL(DWORD dwMsgEncodingType, BYTE *pbCtlContent,
DWORD cbCtlContent, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
BYTE *pbEncoded, DWORD *pcbEncoded)
{
static char oid_ctl[] = szOID_CTL;
BOOL ret;
HCRYPTMSG msg;
TRACE("(%08x, %p, %d, %p, %08x, %p, %p)\n", dwMsgEncodingType,
pbCtlContent, cbCtlContent, pSignInfo, dwFlags, pbEncoded, pcbEncoded);
if (dwFlags)
{
FIXME("unimplemented for flags %08x\n", dwFlags);
return FALSE;
}
msg = CryptMsgOpenToEncode(dwMsgEncodingType, 0, CMSG_SIGNED, pSignInfo,
oid_ctl, NULL);
if (msg)
{
ret = CryptMsgUpdate(msg, pbCtlContent, cbCtlContent, TRUE);
if (ret)
ret = CryptMsgGetParam(msg, CMSG_CONTENT_PARAM, 0, pbEncoded,
pcbEncoded);
CryptMsgClose(msg);
}
else
ret = FALSE;
return ret;
}
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