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wine/dlls/dssenh/main.c
Hans Leidekker c7e0f923bc dssenh: Use BCrypt algorithm pseudo-handles.
2022-09-13 16:22:21 +02:00

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/*
* Copyright 2008 Maarten Lankhorst
* Copyright 2020 Hans Leidekker for CodeWeavers
*
* 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 <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "winreg.h"
#include "bcrypt.h"
#include "objbase.h"
#include "rpcproxy.h"
#include "ntsecapi.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dssenh);
#define MAGIC_KEY (('K' << 24) | ('E' << 16) | ('Y' << 8) | '0')
struct key
{
DWORD magic;
DWORD algid;
DWORD flags;
BCRYPT_KEY_HANDLE handle;
};
#define MAGIC_CONTAINER (('C' << 24) | ('O' << 16) | ('N' << 8) | 'T')
struct container
{
DWORD magic;
DWORD flags;
struct key *exch_key;
struct key *sign_key;
char name[MAX_PATH];
};
#define MAGIC_HASH (('H' << 24) | ('A' << 16) | ('S' << 8) | 'H')
struct hash
{
DWORD magic;
BCRYPT_HASH_HANDLE handle;
DWORD len;
UCHAR value[64];
BOOL finished;
};
static const char dss_path_fmt[] = "Software\\Wine\\Crypto\\DSS\\%s";
static BOOL create_container_regkey( struct container *container, REGSAM sam, HKEY *hkey )
{
char path[sizeof(dss_path_fmt) + MAX_PATH];
HKEY rootkey;
sprintf( path, dss_path_fmt, container->name );
if (container->flags & CRYPT_MACHINE_KEYSET)
rootkey = HKEY_LOCAL_MACHINE;
else
rootkey = HKEY_CURRENT_USER;
/* @@ Wine registry key: HKLM\Software\Wine\Crypto\DSS */
/* @@ Wine registry key: HKCU\Software\Wine\Crypto\DSS */
return !RegCreateKeyExA( rootkey, path, 0, NULL, REG_OPTION_NON_VOLATILE, sam, NULL, hkey, NULL );
}
static struct container *create_key_container( const char *name, DWORD flags )
{
struct container *ret;
if (!(ret = calloc( 1, sizeof(*ret) ))) return NULL;
ret->magic = MAGIC_CONTAINER;
ret->flags = flags;
if (name) strcpy( ret->name, name );
if (!(flags & CRYPT_VERIFYCONTEXT))
{
HKEY hkey;
if (create_container_regkey( ret, KEY_WRITE, &hkey )) RegCloseKey( hkey );
}
return ret;
}
static BOOL open_container_regkey( const char *name, DWORD flags, REGSAM access, HKEY *hkey )
{
char path[sizeof(dss_path_fmt) + MAX_PATH];
HKEY rootkey;
sprintf( path, dss_path_fmt, name );
if (flags & CRYPT_MACHINE_KEYSET)
rootkey = HKEY_LOCAL_MACHINE;
else
rootkey = HKEY_CURRENT_USER;
/* @@ Wine registry key: HKLM\Software\Wine\Crypto\DSS */
/* @@ Wine registry key: HKCU\Software\Wine\Crypto\DSS */
return !RegOpenKeyExA( rootkey, path, 0, access, hkey );
}
static const WCHAR *map_keyspec_to_keypair_name( DWORD keyspec )
{
const WCHAR *name;
switch (keyspec)
{
case AT_KEYEXCHANGE:
name = L"KeyExchangeKeyPair";
break;
case AT_SIGNATURE:
name = L"SignatureKeyPair";
break;
default:
ERR( "invalid key spec %lu\n", keyspec );
return NULL;
}
return name;
}
static struct key *create_key( ALG_ID algid, DWORD flags )
{
struct key *ret;
switch (algid)
{
case AT_SIGNATURE:
case CALG_DSS_SIGN:
break;
default:
FIXME( "unhandled algorithm %08x\n", algid );
return NULL;
}
if (!(ret = calloc( 1, sizeof(*ret) ))) return NULL;
ret->magic = MAGIC_KEY;
ret->algid = algid;
ret->flags = flags;
return ret;
}
static void destroy_key( struct key *key )
{
if (!key) return;
BCryptDestroyKey( key->handle );
key->magic = 0;
free( key );
}
static struct key *import_key( DWORD keyspec, BYTE *data, DWORD len )
{
struct key *ret;
if (!(ret = create_key( keyspec, 0 ))) return NULL;
if (BCryptImportKeyPair( BCRYPT_DSA_ALG_HANDLE, NULL, LEGACY_DSA_V2_PRIVATE_BLOB, &ret->handle, data, len, 0 ))
{
WARN( "failed to import key\n" );
destroy_key( ret );
return NULL;
}
return ret;
}
static struct key *read_key( HKEY hkey, DWORD keyspec, DWORD flags )
{
const WCHAR *value;
DWORD type, len;
BYTE *data;
DATA_BLOB blob_in, blob_out;
struct key *ret = NULL;
if (!(value = map_keyspec_to_keypair_name( keyspec ))) return NULL;
if (RegQueryValueExW( hkey, value, 0, &type, NULL, &len )) return NULL;
if (!(data = malloc( len ))) return NULL;
if (!RegQueryValueExW( hkey, value, 0, &type, data, &len ))
{
blob_in.pbData = data;
blob_in.cbData = len;
if (CryptUnprotectData( &blob_in, NULL, NULL, NULL, NULL, flags, &blob_out ))
{
ret = import_key( keyspec, blob_out.pbData, blob_out.cbData );
LocalFree( blob_out.pbData );
}
}
free( data );
return ret;
}
static void destroy_container( struct container *container )
{
if (!container) return;
destroy_key( container->exch_key );
destroy_key( container->sign_key );
container->magic = 0;
free( container );
}
static struct container *read_key_container( const char *name, DWORD flags )
{
DWORD protect_flags = (flags & CRYPT_MACHINE_KEYSET) ? CRYPTPROTECT_LOCAL_MACHINE : 0;
struct container *ret;
HKEY hkey;
if (!open_container_regkey( name, flags, KEY_READ, &hkey )) return NULL;
if ((ret = create_key_container( name, flags )))
{
ret->exch_key = read_key( hkey, AT_KEYEXCHANGE, protect_flags );
ret->sign_key = read_key( hkey, AT_SIGNATURE, protect_flags );
}
RegCloseKey( hkey );
return ret;
}
static void delete_key_container( const char *name, DWORD flags )
{
char path[sizeof(dss_path_fmt) + MAX_PATH];
HKEY rootkey;
sprintf( path, dss_path_fmt, name );
if (flags & CRYPT_MACHINE_KEYSET)
rootkey = HKEY_LOCAL_MACHINE;
else
rootkey = HKEY_CURRENT_USER;
/* @@ Wine registry key: HKLM\Software\Wine\Crypto\DSS */
/* @@ Wine registry key: HKCU\Software\Wine\Crypto\DSS */
RegDeleteKeyExA( rootkey, path, 0, 0 );
}
BOOL WINAPI CPAcquireContext( HCRYPTPROV *ret_prov, LPSTR container, DWORD flags, PVTableProvStruc vtable )
{
struct container *ret;
char name[MAX_PATH];
TRACE( "%p, %s, %08lx, %p\n", ret_prov, debugstr_a(container), flags, vtable );
if (container && *container)
{
if (lstrlenA( container ) >= sizeof(name)) return FALSE;
lstrcpyA( name, container );
}
else
{
DWORD len = sizeof(name);
if (!GetUserNameA( name, &len )) return FALSE;
}
switch (flags)
{
case 0:
case 0 | CRYPT_MACHINE_KEYSET:
if (!(ret = read_key_container( name, flags )))
SetLastError( NTE_BAD_KEYSET );
break;
case CRYPT_NEWKEYSET:
case CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET:
if ((ret = read_key_container( name, flags )))
{
free( ret );
SetLastError( NTE_EXISTS );
return FALSE;
}
ret = create_key_container( name, flags );
break;
case CRYPT_VERIFYCONTEXT:
case CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET:
ret = create_key_container( "", flags );
break;
case CRYPT_DELETEKEYSET:
case CRYPT_DELETEKEYSET | CRYPT_MACHINE_KEYSET:
delete_key_container( name, flags );
*ret_prov = 0;
return TRUE;
default:
FIXME( "unsupported flags %08lx\n", flags );
return FALSE;
}
if (!ret) return FALSE;
*ret_prov = (HCRYPTPROV)ret;
return TRUE;
}
BOOL WINAPI CPReleaseContext( HCRYPTPROV hprov, DWORD flags )
{
struct container *container = (struct container *)hprov;
TRACE( "%p, %08lx\n", (void *)hprov, flags );
if (container->magic != MAGIC_CONTAINER) return FALSE;
destroy_container( container );
return TRUE;
}
BOOL WINAPI CPGetProvParam( HCRYPTPROV hprov, DWORD param, BYTE *data, DWORD *len, DWORD flags )
{
return FALSE;
}
static BOOL store_key_pair( struct key *key, HKEY hkey, DWORD keyspec, DWORD flags )
{
const WCHAR *value;
DATA_BLOB blob_in, blob_out;
DWORD len;
BYTE *data;
BOOL ret = TRUE;
if (!key) return TRUE;
if (!(value = map_keyspec_to_keypair_name( keyspec ))) return FALSE;
if (BCryptExportKey( key->handle, NULL, LEGACY_DSA_V2_PRIVATE_BLOB, NULL, 0, &len, 0 )) return FALSE;
if (!(data = malloc( len ))) return FALSE;
if (!BCryptExportKey( key->handle, NULL, LEGACY_DSA_V2_PRIVATE_BLOB, data, len, &len, 0 ))
{
blob_in.pbData = data;
blob_in.cbData = len;
if ((ret = CryptProtectData( &blob_in, NULL, NULL, NULL, NULL, flags, &blob_out )))
{
ret = !RegSetValueExW( hkey, value, 0, REG_BINARY, blob_out.pbData, blob_out.cbData );
LocalFree( blob_out.pbData );
}
}
free( data );
return ret;
}
static BOOL store_key_container_keys( struct container *container )
{
HKEY hkey;
DWORD flags;
BOOL ret;
if (container->flags & CRYPT_MACHINE_KEYSET)
flags = CRYPTPROTECT_LOCAL_MACHINE;
else
flags = 0;
if (!create_container_regkey( container, KEY_WRITE, &hkey )) return FALSE;
ret = store_key_pair( container->exch_key, hkey, AT_KEYEXCHANGE, flags );
if (ret) store_key_pair( container->sign_key, hkey, AT_SIGNATURE, flags );
RegCloseKey( hkey );
return ret;
}
static struct key *duplicate_key( const struct key *key )
{
struct key *ret;
if (!(ret = create_key( key->algid, key->flags ))) return NULL;
if (BCryptDuplicateKey( key->handle, &ret->handle, NULL, 0, 0 ))
{
free( ret );
return NULL;
}
return ret;
}
static BOOL generate_key( struct container *container, ALG_ID algid, DWORD bitlen, DWORD flags, HCRYPTKEY *ret_key )
{
struct key *key, *sign_key;
NTSTATUS status;
if (!(key = create_key( algid, flags ))) return FALSE;
if ((status = BCryptGenerateKeyPair( BCRYPT_DSA_ALG_HANDLE, &key->handle, bitlen, 0 )))
{
ERR( "failed to generate key %08lx\n", status );
destroy_key( key );
return FALSE;
}
if ((status = BCryptFinalizeKeyPair( key->handle, 0 )))
{
ERR( "failed to finalize key %08lx\n", status );
destroy_key( key );
return FALSE;
}
switch (algid)
{
case AT_SIGNATURE:
case CALG_DSS_SIGN:
if (!(sign_key = duplicate_key( key )))
{
destroy_key( key );
return FALSE;
}
destroy_key( container->sign_key );
container->sign_key = sign_key;
break;
default:
FIXME( "unhandled algorithm %08x\n", algid );
return FALSE;
}
if (!store_key_container_keys( container )) return FALSE;
*ret_key = (HCRYPTKEY)key;
return TRUE;
}
BOOL WINAPI CPGenKey( HCRYPTPROV hprov, ALG_ID algid, DWORD flags, HCRYPTKEY *ret_key )
{
static const unsigned int supported_key_lengths[] = { 512, 768, 1024 };
struct container *container = (struct container *)hprov;
ULONG i, bitlen = HIWORD(flags) ? HIWORD(flags) : 1024;
TRACE( "%p, %08x, %08lx, %p\n", (void *)hprov, algid, flags, ret_key );
if (container->magic != MAGIC_CONTAINER) return FALSE;
if (bitlen % 2)
{
SetLastError( STATUS_INVALID_PARAMETER );
return FALSE;
}
for (i = 0; i < ARRAY_SIZE(supported_key_lengths); i++)
{
if (bitlen == supported_key_lengths[i]) break;
}
if (i >= ARRAY_SIZE(supported_key_lengths))
{
SetLastError( NTE_BAD_FLAGS );
return FALSE;
}
return generate_key( container, algid, bitlen, LOWORD(flags), ret_key );
}
BOOL WINAPI CPDestroyKey( HCRYPTPROV hprov, HCRYPTKEY hkey )
{
struct key *key = (struct key *)hkey;
TRACE( "%p, %p\n", (void *)hprov, (void *)hkey );
if (key->magic != MAGIC_KEY)
{
SetLastError( NTE_BAD_KEY );
return FALSE;
}
destroy_key( key );
return TRUE;
}
#define MAGIC_DSS1 ('D' | ('S' << 8) | ('S' << 16) | ('1' << 24))
#define MAGIC_DSS2 ('D' | ('S' << 8) | ('S' << 16) | ('2' << 24))
#define MAGIC_DSS3 ('D' | ('S' << 8) | ('S' << 16) | ('3' << 24))
static BOOL import_key_dss2( struct container *container, ALG_ID algid, const BYTE *data, DWORD len, DWORD flags,
HCRYPTKEY *ret_key )
{
const BLOBHEADER *hdr = (const BLOBHEADER *)data;
const DSSPUBKEY *pubkey = (const DSSPUBKEY *)(hdr + 1);
const WCHAR *type;
struct key *key, *exch_key, *sign_key;
NTSTATUS status;
if (len < sizeof(*hdr) + sizeof(*pubkey)) return FALSE;
switch (pubkey->magic)
{
case MAGIC_DSS1:
type = LEGACY_DSA_V2_PUBLIC_BLOB;
break;
case MAGIC_DSS2:
type = LEGACY_DSA_V2_PRIVATE_BLOB;
break;
default:
FIXME( "unsupported key magic %08lx\n", pubkey->magic );
return FALSE;
}
if (!(key = create_key( CALG_DSS_SIGN, flags ))) return FALSE;
if ((status = BCryptImportKeyPair( BCRYPT_DSA_ALG_HANDLE, NULL, type, &key->handle, (UCHAR *)data, len, 0 )))
{
TRACE( "failed to import key %08lx\n", status );
destroy_key( key );
return FALSE;
}
if (!wcscmp(type, LEGACY_DSA_V2_PRIVATE_BLOB))
{
switch (algid)
{
case AT_KEYEXCHANGE:
case CALG_DH_SF:
if (!(exch_key = duplicate_key( key )))
{
destroy_key( key );
return FALSE;
}
destroy_key( container->exch_key );
container->exch_key = exch_key;
break;
case AT_SIGNATURE:
case CALG_DSS_SIGN:
if (!(sign_key = duplicate_key( key )))
{
destroy_key( key );
return FALSE;
}
destroy_key( container->sign_key );
container->sign_key = sign_key;
break;
default:
FIXME( "unhandled key algorithm %u\n", algid );
destroy_key( key );
return FALSE;
}
if (!store_key_container_keys( container )) return FALSE;
}
*ret_key = (HCRYPTKEY)key;
return TRUE;
}
static BOOL import_key_dss3( struct container *container, ALG_ID algid, const BYTE *data, DWORD len, DWORD flags,
HCRYPTKEY *ret_key )
{
const BLOBHEADER *hdr = (const BLOBHEADER *)data;
const DSSPUBKEY_VER3 *pubkey = (const DSSPUBKEY_VER3 *)(hdr + 1);
BCRYPT_DSA_KEY_BLOB *blob;
struct key *key;
BYTE *src, *dst;
ULONG i, size, size_q;
NTSTATUS status;
if (len < sizeof(*hdr) + sizeof(*pubkey)) return FALSE;
switch (pubkey->magic)
{
case MAGIC_DSS3:
break;
default:
FIXME( "unsupported key magic %08lx\n", pubkey->magic );
return FALSE;
}
if ((size_q = pubkey->bitlenQ / 8) > sizeof(blob->q))
{
FIXME( "q too large\n" );
return FALSE;
}
if (!(key = create_key( CALG_DSS_SIGN, flags ))) return FALSE;
size = sizeof(*blob) + (pubkey->bitlenP / 8) * 3;
if (!(blob = calloc( 1, size )))
{
destroy_key( key );
return FALSE;
}
blob->dwMagic = BCRYPT_DSA_PUBLIC_MAGIC;
blob->cbKey = pubkey->bitlenP / 8;
memcpy( blob->Count, &pubkey->DSSSeed.counter, sizeof(blob->Count) );
memcpy( blob->Seed, pubkey->DSSSeed.seed, sizeof(blob->Seed) );
/* q */
src = (BYTE *)(pubkey + 1) + blob->cbKey;
for (i = 0; i < size_q; i++) blob->q[i] = src[size_q - i - 1];
/* p */
src -= blob->cbKey;
dst = (BYTE *)(blob + 1);
for (i = 0; i < blob->cbKey; i++) dst[i] = src[blob->cbKey - i - 1];
/* g */
src += blob->cbKey + size_q;
dst += blob->cbKey;
for (i = 0; i < blob->cbKey; i++) dst[i] = src[blob->cbKey - i - 1];
/* y */
src += blob->cbKey + pubkey->bitlenJ / 8;
dst += blob->cbKey;
for (i = 0; i < blob->cbKey; i++) dst[i] = src[blob->cbKey - i - 1];
if ((status = BCryptImportKeyPair( BCRYPT_DSA_ALG_HANDLE, NULL, BCRYPT_DSA_PUBLIC_BLOB, &key->handle,
(UCHAR *)blob, size, 0 )))
{
WARN( "failed to import key %08lx\n", status );
destroy_key( key );
free( blob );
return FALSE;
}
free( blob );
*ret_key = (HCRYPTKEY)key;
return TRUE;
}
BOOL WINAPI CPImportKey( HCRYPTPROV hprov, const BYTE *data, DWORD len, HCRYPTKEY hpubkey, DWORD flags,
HCRYPTKEY *ret_key )
{
struct container *container = (struct container *)hprov;
const BLOBHEADER *hdr;
BOOL ret;
TRACE( "%p, %p, %lu, %p, %08lx, %p\n", (void *)hprov, data, len, (void *)hpubkey, flags, ret_key );
if (container->magic != MAGIC_CONTAINER) return FALSE;
if (len < sizeof(*hdr)) return FALSE;
hdr = (const BLOBHEADER *)data;
if ((hdr->bType != PRIVATEKEYBLOB && hdr->bType != PUBLICKEYBLOB) || hdr->aiKeyAlg != CALG_DSS_SIGN)
{
FIXME( "bType %u aiKeyAlg %08x not supported\n", hdr->bType, hdr->aiKeyAlg );
return FALSE;
}
switch (hdr->bVersion)
{
case 2:
ret = import_key_dss2( container, hdr->aiKeyAlg, data, len, flags, ret_key );
break;
case 3:
ret = import_key_dss3( container, hdr->aiKeyAlg, data, len, flags, ret_key );
break;
default:
FIXME( "version %u not supported\n", hdr->bVersion );
return FALSE;
}
return ret;
}
BOOL WINAPI CPExportKey( HCRYPTPROV hprov, HCRYPTKEY hkey, HCRYPTKEY hexpkey, DWORD blobtype, DWORD flags,
BYTE *data, DWORD *len )
{
struct key *key = (struct key *)hkey;
const WCHAR *type;
TRACE( "%p, %p, %p, %08lx, %08lx, %p, %p\n", (void *)hprov, (void *)hkey, (void *)hexpkey, blobtype, flags,
data, len );
if (key->magic != MAGIC_KEY) return FALSE;
if (hexpkey)
{
FIXME( "export key not supported\n" );
return FALSE;
}
if (flags)
{
FIXME( "flags %08lx not supported\n", flags );
return FALSE;
}
switch (blobtype)
{
case PUBLICKEYBLOB:
type = LEGACY_DSA_V2_PUBLIC_BLOB;
break;
case PRIVATEKEYBLOB:
type = LEGACY_DSA_V2_PRIVATE_BLOB;
break;
default:
FIXME( "blob type %lu not supported\n", blobtype );
return FALSE;
}
return !BCryptExportKey( key->handle, NULL, type, data, *len, len, 0 );
}
BOOL WINAPI CPDuplicateKey( HCRYPTPROV hprov, HCRYPTKEY hkey, DWORD *reserved, DWORD flags, HCRYPTKEY *ret_key )
{
struct key *key = (struct key *)hkey, *ret;
TRACE( "%p, %p, %p, %08lx, %p\n", (void *)hprov, (void *)hkey, reserved, flags, ret_key );
if (key->magic != MAGIC_KEY) return FALSE;
if (!(ret = duplicate_key( key ))) return FALSE;
*ret_key = (HCRYPTKEY)ret;
return TRUE;
}
BOOL WINAPI CPGetUserKey( HCRYPTPROV hprov, DWORD keyspec, HCRYPTKEY *ret_key )
{
struct container *container = (struct container *)hprov;
BOOL ret = FALSE;
TRACE( "%p, %08lx, %p\n", (void *)hprov, keyspec, ret_key );
if (container->magic != MAGIC_CONTAINER) return FALSE;
switch (keyspec)
{
case AT_KEYEXCHANGE:
if (!container->exch_key) SetLastError( NTE_NO_KEY );
else if ((*ret_key = (HCRYPTKEY)duplicate_key( container->exch_key ))) ret = TRUE;
break;
case AT_SIGNATURE:
if (!container->sign_key) SetLastError( NTE_NO_KEY );
else if ((*ret_key = (HCRYPTKEY)duplicate_key( container->sign_key ))) ret = TRUE;
break;
default:
SetLastError( NTE_NO_KEY );
return FALSE;
}
return ret;
}
BOOL WINAPI CPGenRandom( HCRYPTPROV hprov, DWORD len, BYTE *buffer )
{
struct container *container = (struct container *)hprov;
TRACE( "%p, %lu, %p\n", (void *)hprov, len, buffer );
if (container->magic != MAGIC_CONTAINER) return FALSE;
return RtlGenRandom( buffer, len );
}
static struct hash *create_hash( ALG_ID algid )
{
struct hash *ret;
BCRYPT_ALG_HANDLE alg_handle;
DWORD len;
switch (algid)
{
case CALG_MD5:
alg_handle = BCRYPT_MD5_ALG_HANDLE;
len = 16;
break;
case CALG_SHA1:
alg_handle = BCRYPT_SHA1_ALG_HANDLE;
len = 20;
break;
default:
FIXME( "unhandled algorithm %u\n", algid );
return NULL;
}
if (!(ret = calloc( 1, sizeof(*ret) ))) return NULL;
ret->magic = MAGIC_HASH;
ret->len = len;
if (BCryptCreateHash( alg_handle, &ret->handle, NULL, 0, NULL, 0, 0 ))
{
free( ret );
return NULL;
}
return ret;
}
BOOL WINAPI CPCreateHash( HCRYPTPROV hprov, ALG_ID algid, HCRYPTKEY hkey, DWORD flags, HCRYPTHASH *ret_hash )
{
struct hash *hash;
TRACE( "%p, %08x, %p, %08lx, %p\n", (void *)hprov, algid, (void *)hkey, flags, ret_hash );
switch (algid)
{
case CALG_MD5:
case CALG_SHA1:
break;
default:
FIXME( "algorithm %u not supported\n", algid );
SetLastError( NTE_BAD_ALGID );
return FALSE;
}
if (!(hash = create_hash( algid ))) return FALSE;
*ret_hash = (HCRYPTHASH)hash;
return TRUE;
}
static void destroy_hash( struct hash *hash )
{
if (!hash) return;
BCryptDestroyHash( hash->handle );
hash->magic = 0;
free( hash );
}
BOOL WINAPI CPDestroyHash( HCRYPTPROV hprov, HCRYPTHASH hhash )
{
struct hash *hash = (struct hash *)hhash;
TRACE( "%p, %p\n", (void *)hprov, (void *)hhash);
if (hash->magic != MAGIC_HASH)
{
SetLastError( NTE_BAD_HASH );
return FALSE;
}
destroy_hash( hash );
return TRUE;
}
static struct hash *duplicate_hash( const struct hash *hash )
{
struct hash *ret;
if (!(ret = malloc( sizeof(*ret) ))) return NULL;
ret->magic = hash->magic;
ret->len = hash->len;
if (BCryptDuplicateHash( hash->handle, &ret->handle, NULL, 0, 0 ))
{
free( ret );
return NULL;
}
memcpy( ret->value, hash->value, sizeof(hash->value) );
ret->finished = hash->finished;
return ret;
}
BOOL WINAPI CPDuplicateHash( HCRYPTPROV hprov, HCRYPTHASH hhash, DWORD *reserved, DWORD flags, HCRYPTHASH *ret_hash )
{
struct hash *hash = (struct hash *)hhash, *ret;
TRACE( "%p, %p, %p, %08lx, %p\n", (void *)hprov, (void *)hhash, reserved, flags, ret_hash );
if (hash->magic != MAGIC_HASH) return FALSE;
if (!(ret = duplicate_hash( hash ))) return FALSE;
*ret_hash = (HCRYPTHASH)ret;
return TRUE;
}
BOOL WINAPI CPHashData( HCRYPTPROV hprov, HCRYPTHASH hhash, const BYTE *data, DWORD len, DWORD flags )
{
struct hash *hash = (struct hash *)hhash;
TRACE("%p, %p, %p, %lu, %08lx\n", (void *)hprov, (void *)hhash, data, len, flags );
if (hash->magic != MAGIC_HASH) return FALSE;
if (hash->finished)
{
SetLastError( NTE_BAD_HASH_STATE );
return FALSE;
}
return !BCryptHashData( hash->handle, (UCHAR *)data, len, 0 );
}
BOOL WINAPI CPGetHashParam( HCRYPTPROV hprov, HCRYPTHASH hhash, DWORD param, BYTE *data, DWORD *len, DWORD flags )
{
struct hash *hash = (struct hash *)hhash;
TRACE( "%p, %p, %08lx, %p, %p, %08lx\n", (void *)hprov, (void *)hhash, param, data, len, flags );
if (hash->magic != MAGIC_HASH) return FALSE;
switch (param)
{
case HP_HASHSIZE:
if (sizeof(hash->len) > *len)
{
*len = sizeof(hash->len);
SetLastError( ERROR_MORE_DATA );
return FALSE;
}
*(DWORD *)data = hash->len;
*len = sizeof(hash->len);
return TRUE;
case HP_HASHVAL:
if (!hash->finished)
{
if (BCryptFinishHash( hash->handle, hash->value, hash->len, 0 )) return FALSE;
hash->finished = TRUE;
}
if (hash->len > *len)
{
*len = hash->len;
SetLastError( ERROR_MORE_DATA );
return FALSE;
}
if (data) memcpy( data, hash->value, hash->len );
*len = hash->len;
return TRUE;
default:
SetLastError( NTE_BAD_TYPE );
return FALSE;
}
}
BOOL WINAPI CPSetHashParam( HCRYPTPROV hprov, HCRYPTHASH hhash, DWORD param, const BYTE *data, DWORD flags )
{
struct hash *hash = (struct hash *)hhash;
TRACE( "%p, %p, %08lx, %p, %08lx\n", (void *)hprov, (void *)hhash, param, data, flags );
if (hash->magic != MAGIC_HASH) return FALSE;
switch (param)
{
case HP_HASHVAL:
memcpy( hash->value, data, hash->len );
return TRUE;
default:
FIXME( "param %lu not supported\n", param );
SetLastError( NTE_BAD_TYPE );
return FALSE;
}
}
BOOL WINAPI CPDeriveKey( HCRYPTPROV hprov, ALG_ID algid, HCRYPTHASH hhash, DWORD flags, HCRYPTKEY *ret_key )
{
return FALSE;
}
static DWORD get_signature_length( DWORD algid )
{
switch (algid)
{
case AT_SIGNATURE:
case CALG_DSS_SIGN: return 40;
default:
FIXME( "unhandled algorithm %lu\n", algid );
return 0;
}
}
#define MAX_HASH_LEN 20
BOOL WINAPI CPSignHash( HCRYPTPROV hprov, HCRYPTHASH hhash, DWORD keyspec, const WCHAR *desc, DWORD flags, BYTE *sig,
DWORD *siglen )
{
struct container *container = (struct container *)hprov;
struct hash *hash = (struct hash *)hhash;
ULONG len;
TRACE( "%p, %p, %lu, %s, %08lx, %p, %p\n", (void *)hprov, (void *)hhash, keyspec, debugstr_w(desc), flags, sig,
siglen );
if (container->magic != MAGIC_CONTAINER || !container->sign_key) return FALSE;
if (hash->magic != MAGIC_HASH) return FALSE;
if (!(len = get_signature_length( container->sign_key->algid ))) return FALSE;
if (*siglen < len)
{
*siglen = len;
return TRUE;
}
return !BCryptSignHash( container->sign_key->handle, NULL, hash->value, hash->len, sig, *siglen, siglen, 0 );
}
BOOL WINAPI CPVerifySignature( HCRYPTPROV hprov, HCRYPTHASH hhash, const BYTE *sig, DWORD siglen, HCRYPTKEY hpubkey,
const WCHAR *desc, DWORD flags )
{
struct hash *hash = (struct hash *)hhash;
struct key *key = (struct key *)hpubkey;
TRACE( "%p, %p, %p, %lu %p, %s, %08lx\n", (void *)hprov, (void *)hhash, sig, siglen, (void *)hpubkey,
debugstr_w(desc), flags );
if (hash->magic != MAGIC_HASH || key->magic != MAGIC_KEY) return FALSE;
if (flags)
{
FIXME( "flags %08lx not supported\n", flags );
return FALSE;
}
return !BCryptVerifySignature( key->handle, NULL, hash->value, hash->len, (UCHAR *)sig, siglen, 0 );
}
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