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wine/dlls/bcrypt/bcrypt_main.c
Nikolay Sivov 38d9020f29 bcrypt: Add initial support for asymmetric keys in BCryptDecrypt(). 
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2020-12-04 16:36:32 +01:00

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66 KiB
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/*
* Copyright 2009 Henri Verbeet 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 "ntsecapi.h"
#include "wincrypt.h"
#include "winternl.h"
#include "bcrypt.h"
#include "bcrypt_internal.h"
#include "wine/debug.h"
#include "wine/heap.h"
WINE_DEFAULT_DEBUG_CHANNEL(bcrypt);
static HINSTANCE instance;
static const struct key_funcs *key_funcs;
NTSTATUS WINAPI BCryptAddContextFunction(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function, ULONG pos)
{
FIXME("%08x, %s, %08x, %s, %u: stub\n", table, debugstr_w(context), iface, debugstr_w(function), pos);
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptAddContextFunctionProvider(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function, LPCWSTR provider, ULONG pos)
{
FIXME("%08x, %s, %08x, %s, %s, %u: stub\n", table, debugstr_w(context), iface, debugstr_w(function), debugstr_w(provider), pos);
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptRemoveContextFunction(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function)
{
FIXME("%08x, %s, %08x, %s: stub\n", table, debugstr_w(context), iface, debugstr_w(function));
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS WINAPI BCryptRemoveContextFunctionProvider(ULONG table, LPCWSTR context, ULONG iface, LPCWSTR function, LPCWSTR provider)
{
FIXME("%08x, %s, %08x, %s, %s: stub\n", table, debugstr_w(context), iface, debugstr_w(function), debugstr_w(provider));
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS WINAPI BCryptEnumContextFunctions( ULONG table, const WCHAR *ctx, ULONG iface, ULONG *buflen,
CRYPT_CONTEXT_FUNCTIONS **buffer )
{
FIXME( "%u, %s, %u, %p, %p\n", table, debugstr_w(ctx), iface, buflen, buffer );
return STATUS_NOT_IMPLEMENTED;
}
void WINAPI BCryptFreeBuffer( void *buffer )
{
FIXME( "%p\n", buffer );
}
NTSTATUS WINAPI BCryptRegisterProvider(LPCWSTR provider, ULONG flags, PCRYPT_PROVIDER_REG reg)
{
FIXME("%s, %08x, %p: stub\n", debugstr_w(provider), flags, reg);
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptUnregisterProvider(LPCWSTR provider)
{
FIXME("%s: stub\n", debugstr_w(provider));
return STATUS_NOT_IMPLEMENTED;
}
#define MAX_HASH_OUTPUT_BYTES 64
#define MAX_HASH_BLOCK_BITS 1024
/* ordered by class, keep in sync with enum alg_id */
static const struct
{
const WCHAR *name;
ULONG class;
ULONG object_length;
ULONG hash_length;
ULONG block_bits;
}
builtin_algorithms[] =
{
{ BCRYPT_3DES_ALGORITHM, BCRYPT_CIPHER_INTERFACE, 522, 0, 0 },
{ BCRYPT_AES_ALGORITHM, BCRYPT_CIPHER_INTERFACE, 654, 0, 0 },
{ BCRYPT_SHA256_ALGORITHM, BCRYPT_HASH_INTERFACE, 286, 32, 512 },
{ BCRYPT_SHA384_ALGORITHM, BCRYPT_HASH_INTERFACE, 382, 48, 1024 },
{ BCRYPT_SHA512_ALGORITHM, BCRYPT_HASH_INTERFACE, 382, 64, 1024 },
{ BCRYPT_SHA1_ALGORITHM, BCRYPT_HASH_INTERFACE, 278, 20, 512 },
{ BCRYPT_MD5_ALGORITHM, BCRYPT_HASH_INTERFACE, 274, 16, 512 },
{ BCRYPT_MD4_ALGORITHM, BCRYPT_HASH_INTERFACE, 270, 16, 512 },
{ BCRYPT_MD2_ALGORITHM, BCRYPT_HASH_INTERFACE, 270, 16, 128 },
{ BCRYPT_RSA_ALGORITHM, BCRYPT_ASYMMETRIC_ENCRYPTION_INTERFACE, 0, 0, 0 },
{ BCRYPT_ECDH_P256_ALGORITHM, BCRYPT_SECRET_AGREEMENT_INTERFACE, 0, 0, 0 },
{ BCRYPT_RSA_SIGN_ALGORITHM, BCRYPT_SIGNATURE_INTERFACE, 0, 0, 0 },
{ BCRYPT_ECDSA_P256_ALGORITHM, BCRYPT_SIGNATURE_INTERFACE, 0, 0, 0 },
{ BCRYPT_ECDSA_P384_ALGORITHM, BCRYPT_SIGNATURE_INTERFACE, 0, 0, 0 },
{ BCRYPT_DSA_ALGORITHM, BCRYPT_SIGNATURE_INTERFACE, 0, 0, 0 },
{ BCRYPT_RNG_ALGORITHM, BCRYPT_RNG_INTERFACE, 0, 0, 0 },
};
static BOOL match_operation_type( ULONG type, ULONG class )
{
if (!type) return TRUE;
switch (class)
{
case BCRYPT_CIPHER_INTERFACE: return type & BCRYPT_CIPHER_OPERATION;
case BCRYPT_HASH_INTERFACE: return type & BCRYPT_HASH_OPERATION;
case BCRYPT_ASYMMETRIC_ENCRYPTION_INTERFACE: return type & BCRYPT_ASYMMETRIC_ENCRYPTION_OPERATION;
case BCRYPT_SECRET_AGREEMENT_INTERFACE: return type & BCRYPT_SECRET_AGREEMENT_OPERATION;
case BCRYPT_SIGNATURE_INTERFACE: return type & BCRYPT_SIGNATURE_OPERATION;
case BCRYPT_RNG_INTERFACE: return type & BCRYPT_RNG_OPERATION;
default: break;
}
return FALSE;
}
NTSTATUS WINAPI BCryptEnumAlgorithms( ULONG type, ULONG *ret_count, BCRYPT_ALGORITHM_IDENTIFIER **ret_list, ULONG flags )
{
static const ULONG supported = BCRYPT_CIPHER_OPERATION |\
BCRYPT_HASH_OPERATION |\
BCRYPT_ASYMMETRIC_ENCRYPTION_OPERATION |\
BCRYPT_SECRET_AGREEMENT_OPERATION |\
BCRYPT_SIGNATURE_OPERATION |\
BCRYPT_RNG_OPERATION;
BCRYPT_ALGORITHM_IDENTIFIER *list;
ULONG i, count = 0;
TRACE( "%08x, %p, %p, %08x\n", type, ret_count, ret_list, flags );
if (!ret_count || !ret_list || (type & ~supported)) return STATUS_INVALID_PARAMETER;
for (i = 0; i < ARRAY_SIZE( builtin_algorithms ); i++)
{
if (match_operation_type( type, builtin_algorithms[i].class )) count++;
}
if (!(list = heap_alloc( count * sizeof(*list) ))) return STATUS_NO_MEMORY;
for (i = 0; i < ARRAY_SIZE( builtin_algorithms ); i++)
{
if (!match_operation_type( type, builtin_algorithms[i].class )) continue;
list[i].pszName = (WCHAR *)builtin_algorithms[i].name;
list[i].dwClass = builtin_algorithms[i].class;
list[i].dwFlags = 0;
}
*ret_count = count;
*ret_list = list;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptGenRandom(BCRYPT_ALG_HANDLE handle, UCHAR *buffer, ULONG count, ULONG flags)
{
const DWORD supported_flags = BCRYPT_USE_SYSTEM_PREFERRED_RNG;
struct algorithm *algorithm = handle;
TRACE("%p, %p, %u, %08x - semi-stub\n", handle, buffer, count, flags);
if (!algorithm)
{
/* It's valid to call without an algorithm if BCRYPT_USE_SYSTEM_PREFERRED_RNG
* is set. In this case the preferred system RNG is used.
*/
if (!(flags & BCRYPT_USE_SYSTEM_PREFERRED_RNG))
return STATUS_INVALID_HANDLE;
}
else if (algorithm->hdr.magic != MAGIC_ALG || algorithm->id != ALG_ID_RNG)
return STATUS_INVALID_HANDLE;
if (!buffer)
return STATUS_INVALID_PARAMETER;
if (flags & ~supported_flags)
FIXME("unsupported flags %08x\n", flags & ~supported_flags);
if (algorithm)
FIXME("ignoring selected algorithm\n");
/* When zero bytes are requested the function returns success too. */
if (!count)
return STATUS_SUCCESS;
if (algorithm || (flags & BCRYPT_USE_SYSTEM_PREFERRED_RNG))
{
if (RtlGenRandom(buffer, count))
return STATUS_SUCCESS;
}
FIXME("called with unsupported parameters, returning error\n");
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS WINAPI BCryptOpenAlgorithmProvider( BCRYPT_ALG_HANDLE *handle, LPCWSTR id, LPCWSTR implementation, DWORD flags )
{
const DWORD supported_flags = BCRYPT_ALG_HANDLE_HMAC_FLAG | BCRYPT_HASH_REUSABLE_FLAG;
struct algorithm *alg;
enum alg_id alg_id;
ULONG i;
TRACE( "%p, %s, %s, %08x\n", handle, wine_dbgstr_w(id), wine_dbgstr_w(implementation), flags );
if (!handle || !id) return STATUS_INVALID_PARAMETER;
if (flags & ~supported_flags)
{
FIXME( "unsupported flags %08x\n", flags & ~supported_flags);
return STATUS_NOT_IMPLEMENTED;
}
for (i = 0; i < ARRAY_SIZE( builtin_algorithms ); i++)
{
if (!wcscmp( id, builtin_algorithms[i].name))
{
alg_id = i;
break;
}
}
if (i == ARRAY_SIZE( builtin_algorithms ))
{
FIXME( "algorithm %s not supported\n", debugstr_w(id) );
return STATUS_NOT_IMPLEMENTED;
}
if (implementation && wcscmp( implementation, MS_PRIMITIVE_PROVIDER ))
{
FIXME( "implementation %s not supported\n", debugstr_w(implementation) );
return STATUS_NOT_IMPLEMENTED;
}
if (!(alg = heap_alloc( sizeof(*alg) ))) return STATUS_NO_MEMORY;
alg->hdr.magic = MAGIC_ALG;
alg->id = alg_id;
alg->mode = MODE_ID_CBC;
alg->flags = flags;
*handle = alg;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptCloseAlgorithmProvider( BCRYPT_ALG_HANDLE handle, DWORD flags )
{
struct algorithm *alg = handle;
TRACE( "%p, %08x\n", handle, flags );
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
alg->hdr.magic = 0;
heap_free( alg );
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptGetFipsAlgorithmMode(BOOLEAN *enabled)
{
FIXME("%p - semi-stub\n", enabled);
if (!enabled)
return STATUS_INVALID_PARAMETER;
*enabled = FALSE;
return STATUS_SUCCESS;
}
struct hash_impl
{
union
{
MD2_CTX md2;
MD4_CTX md4;
MD5_CTX md5;
SHA_CTX sha1;
SHA256_CTX sha256;
SHA512_CTX sha512;
} u;
};
static NTSTATUS hash_init( struct hash_impl *hash, enum alg_id alg_id )
{
switch (alg_id)
{
case ALG_ID_MD2:
md2_init( &hash->u.md2 );
break;
case ALG_ID_MD4:
MD4Init( &hash->u.md4 );
break;
case ALG_ID_MD5:
MD5Init( &hash->u.md5 );
break;
case ALG_ID_SHA1:
A_SHAInit( &hash->u.sha1 );
break;
case ALG_ID_SHA256:
sha256_init( &hash->u.sha256 );
break;
case ALG_ID_SHA384:
sha384_init( &hash->u.sha512 );
break;
case ALG_ID_SHA512:
sha512_init( &hash->u.sha512 );
break;
default:
ERR( "unhandled id %u\n", alg_id );
return STATUS_NOT_IMPLEMENTED;
}
return STATUS_SUCCESS;
}
static NTSTATUS hash_update( struct hash_impl *hash, enum alg_id alg_id,
UCHAR *input, ULONG size )
{
switch (alg_id)
{
case ALG_ID_MD2:
md2_update( &hash->u.md2, input, size );
break;
case ALG_ID_MD4:
MD4Update( &hash->u.md4, input, size );
break;
case ALG_ID_MD5:
MD5Update( &hash->u.md5, input, size );
break;
case ALG_ID_SHA1:
A_SHAUpdate( &hash->u.sha1, input, size );
break;
case ALG_ID_SHA256:
sha256_update( &hash->u.sha256, input, size );
break;
case ALG_ID_SHA384:
sha384_update( &hash->u.sha512, input, size );
break;
case ALG_ID_SHA512:
sha512_update( &hash->u.sha512, input, size );
break;
default:
ERR( "unhandled id %u\n", alg_id );
return STATUS_NOT_IMPLEMENTED;
}
return STATUS_SUCCESS;
}
static NTSTATUS hash_finish( struct hash_impl *hash, enum alg_id alg_id,
UCHAR *output, ULONG size )
{
switch (alg_id)
{
case ALG_ID_MD2:
md2_finalize( &hash->u.md2, output );
break;
case ALG_ID_MD4:
MD4Final( &hash->u.md4 );
memcpy( output, hash->u.md4.digest, 16 );
break;
case ALG_ID_MD5:
MD5Final( &hash->u.md5 );
memcpy( output, hash->u.md5.digest, 16 );
break;
case ALG_ID_SHA1:
A_SHAFinal( &hash->u.sha1, (ULONG *)output );
break;
case ALG_ID_SHA256:
sha256_finalize( &hash->u.sha256, output );
break;
case ALG_ID_SHA384:
sha384_finalize( &hash->u.sha512, output );
break;
case ALG_ID_SHA512:
sha512_finalize( &hash->u.sha512, output );
break;
default:
ERR( "unhandled id %u\n", alg_id );
return STATUS_NOT_IMPLEMENTED;
}
return STATUS_SUCCESS;
}
#define HASH_FLAG_HMAC 0x01
#define HASH_FLAG_REUSABLE 0x02
struct hash
{
struct object hdr;
enum alg_id alg_id;
ULONG flags;
UCHAR *secret;
ULONG secret_len;
struct hash_impl outer;
struct hash_impl inner;
};
#define BLOCK_LENGTH_3DES 8
#define BLOCK_LENGTH_AES 16
static NTSTATUS generic_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
if (!wcscmp( prop, BCRYPT_OBJECT_LENGTH ))
{
if (!builtin_algorithms[id].object_length)
return STATUS_NOT_SUPPORTED;
*ret_size = sizeof(ULONG);
if (size < sizeof(ULONG))
return STATUS_BUFFER_TOO_SMALL;
if (buf)
*(ULONG *)buf = builtin_algorithms[id].object_length;
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_HASH_LENGTH ))
{
if (!builtin_algorithms[id].hash_length)
return STATUS_NOT_SUPPORTED;
*ret_size = sizeof(ULONG);
if (size < sizeof(ULONG))
return STATUS_BUFFER_TOO_SMALL;
if(buf)
*(ULONG*)buf = builtin_algorithms[id].hash_length;
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_ALGORITHM_NAME ))
{
*ret_size = (lstrlenW(builtin_algorithms[id].name) + 1) * sizeof(WCHAR);
if (size < *ret_size)
return STATUS_BUFFER_TOO_SMALL;
if(buf)
memcpy(buf, builtin_algorithms[id].name, *ret_size);
return STATUS_SUCCESS;
}
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS get_3des_property( enum mode_id mode, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
if (!wcscmp( prop, BCRYPT_BLOCK_LENGTH ))
{
*ret_size = sizeof(ULONG);
if (size < sizeof(ULONG)) return STATUS_BUFFER_TOO_SMALL;
if (buf) *(ULONG *)buf = BLOCK_LENGTH_3DES;
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_CHAINING_MODE ))
{
const WCHAR *str;
switch (mode)
{
case MODE_ID_CBC: str = BCRYPT_CHAIN_MODE_CBC; break;
default: return STATUS_NOT_IMPLEMENTED;
}
*ret_size = 64;
if (size < *ret_size) return STATUS_BUFFER_TOO_SMALL;
memcpy( buf, str, (lstrlenW(str) + 1) * sizeof(WCHAR) );
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_KEY_LENGTHS ))
{
BCRYPT_KEY_LENGTHS_STRUCT *key_lengths = (void *)buf;
*ret_size = sizeof(*key_lengths);
if (key_lengths && size < *ret_size) return STATUS_BUFFER_TOO_SMALL;
if (key_lengths)
{
key_lengths->dwMinLength = 192;
key_lengths->dwMaxLength = 192;
key_lengths->dwIncrement = 0;
}
return STATUS_SUCCESS;
}
FIXME( "unsupported property %s\n", debugstr_w(prop) );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS get_aes_property( enum mode_id mode, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
if (!wcscmp( prop, BCRYPT_BLOCK_LENGTH ))
{
*ret_size = sizeof(ULONG);
if (size < sizeof(ULONG)) return STATUS_BUFFER_TOO_SMALL;
if (buf) *(ULONG *)buf = BLOCK_LENGTH_AES;
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_CHAINING_MODE ))
{
const WCHAR *str;
switch (mode)
{
case MODE_ID_ECB: str = BCRYPT_CHAIN_MODE_ECB; break;
case MODE_ID_CBC: str = BCRYPT_CHAIN_MODE_CBC; break;
case MODE_ID_GCM: str = BCRYPT_CHAIN_MODE_GCM; break;
default: return STATUS_NOT_IMPLEMENTED;
}
*ret_size = 64;
if (size < *ret_size) return STATUS_BUFFER_TOO_SMALL;
memcpy( buf, str, (lstrlenW(str) + 1) * sizeof(WCHAR) );
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_KEY_LENGTHS ))
{
BCRYPT_KEY_LENGTHS_STRUCT *key_lengths = (void *)buf;
*ret_size = sizeof(*key_lengths);
if (key_lengths && size < *ret_size) return STATUS_BUFFER_TOO_SMALL;
if (key_lengths)
{
key_lengths->dwMinLength = 128;
key_lengths->dwMaxLength = 256;
key_lengths->dwIncrement = 64;
}
return STATUS_SUCCESS;
}
if (!wcscmp( prop, BCRYPT_AUTH_TAG_LENGTH ))
{
BCRYPT_AUTH_TAG_LENGTHS_STRUCT *tag_length = (void *)buf;
if (mode != MODE_ID_GCM) return STATUS_NOT_SUPPORTED;
*ret_size = sizeof(*tag_length);
if (tag_length && size < *ret_size) return STATUS_BUFFER_TOO_SMALL;
if (tag_length)
{
tag_length->dwMinLength = 12;
tag_length->dwMaxLength = 16;
tag_length->dwIncrement = 1;
}
return STATUS_SUCCESS;
}
FIXME( "unsupported property %s\n", debugstr_w(prop) );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS get_rsa_property( enum mode_id mode, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
if (!wcscmp( prop, BCRYPT_PADDING_SCHEMES ))
{
*ret_size = sizeof(ULONG);
if (size < sizeof(ULONG)) return STATUS_BUFFER_TOO_SMALL;
if (buf) *(ULONG *)buf = BCRYPT_SUPPORTED_PAD_PKCS1_SIG;
return STATUS_SUCCESS;
}
FIXME( "unsupported property %s\n", debugstr_w(prop) );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS get_dsa_property( enum mode_id mode, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
if (!wcscmp( prop, BCRYPT_PADDING_SCHEMES )) return STATUS_NOT_SUPPORTED;
FIXME( "unsupported property %s\n", debugstr_w(prop) );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS get_alg_property( const struct algorithm *alg, const WCHAR *prop,
UCHAR *buf, ULONG size, ULONG *ret_size )
{
NTSTATUS status;
status = generic_alg_property( alg->id, prop, buf, size, ret_size );
if (status != STATUS_NOT_IMPLEMENTED)
return status;
switch (alg->id)
{
case ALG_ID_3DES:
return get_3des_property( alg->mode, prop, buf, size, ret_size );
case ALG_ID_AES:
return get_aes_property( alg->mode, prop, buf, size, ret_size );
case ALG_ID_RSA:
return get_rsa_property( alg->mode, prop, buf, size, ret_size );
case ALG_ID_DSA:
return get_dsa_property( alg->mode, prop, buf, size, ret_size );
default:
break;
}
FIXME( "unsupported property %s algorithm %u\n", debugstr_w(prop), alg->id );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS set_alg_property( struct algorithm *alg, const WCHAR *prop, UCHAR *value, ULONG size, ULONG flags )
{
switch (alg->id)
{
case ALG_ID_3DES:
if (!wcscmp( prop, BCRYPT_CHAINING_MODE ))
{
if (!wcscmp( (WCHAR *)value, BCRYPT_CHAIN_MODE_CBC ))
{
alg->mode = MODE_ID_CBC;
return STATUS_SUCCESS;
}
else
{
FIXME( "unsupported mode %s\n", debugstr_w((WCHAR *)value) );
return STATUS_NOT_SUPPORTED;
}
}
FIXME( "unsupported 3des algorithm property %s\n", debugstr_w(prop) );
return STATUS_NOT_IMPLEMENTED;
case ALG_ID_AES:
if (!wcscmp( prop, BCRYPT_CHAINING_MODE ))
{
if (!wcscmp( (WCHAR *)value, BCRYPT_CHAIN_MODE_ECB ))
{
alg->mode = MODE_ID_ECB;
return STATUS_SUCCESS;
}
else if (!wcscmp( (WCHAR *)value, BCRYPT_CHAIN_MODE_CBC ))
{
alg->mode = MODE_ID_CBC;
return STATUS_SUCCESS;
}
else if (!wcscmp( (WCHAR *)value, BCRYPT_CHAIN_MODE_GCM ))
{
alg->mode = MODE_ID_GCM;
return STATUS_SUCCESS;
}
else
{
FIXME( "unsupported mode %s\n", debugstr_w((WCHAR *)value) );
return STATUS_NOT_IMPLEMENTED;
}
}
FIXME( "unsupported aes algorithm property %s\n", debugstr_w(prop) );
return STATUS_NOT_IMPLEMENTED;
default:
FIXME( "unsupported algorithm %u\n", alg->id );
return STATUS_NOT_IMPLEMENTED;
}
}
static NTSTATUS get_hash_property( const struct hash *hash, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
NTSTATUS status;
status = generic_alg_property( hash->alg_id, prop, buf, size, ret_size );
if (status == STATUS_NOT_IMPLEMENTED)
FIXME( "unsupported property %s\n", debugstr_w(prop) );
return status;
}
static NTSTATUS get_key_property( const struct key *key, const WCHAR *prop, UCHAR *buf, ULONG size, ULONG *ret_size )
{
switch (key->alg_id)
{
case ALG_ID_3DES:
return get_3des_property( key->u.s.mode, prop, buf, size, ret_size );
case ALG_ID_AES:
if (!wcscmp( prop, BCRYPT_AUTH_TAG_LENGTH )) return STATUS_NOT_SUPPORTED;
return get_aes_property( key->u.s.mode, prop, buf, size, ret_size );
default:
FIXME( "unsupported algorithm %u\n", key->alg_id );
return STATUS_NOT_IMPLEMENTED;
}
}
NTSTATUS WINAPI BCryptGetProperty( BCRYPT_HANDLE handle, LPCWSTR prop, UCHAR *buffer, ULONG count, ULONG *res, ULONG flags )
{
struct object *object = handle;
TRACE( "%p, %s, %p, %u, %p, %08x\n", handle, wine_dbgstr_w(prop), buffer, count, res, flags );
if (!object) return STATUS_INVALID_HANDLE;
if (!prop || !res) return STATUS_INVALID_PARAMETER;
switch (object->magic)
{
case MAGIC_ALG:
{
const struct algorithm *alg = (const struct algorithm *)object;
return get_alg_property( alg, prop, buffer, count, res );
}
case MAGIC_KEY:
{
const struct key *key = (const struct key *)object;
return get_key_property( key, prop, buffer, count, res );
}
case MAGIC_HASH:
{
const struct hash *hash = (const struct hash *)object;
return get_hash_property( hash, prop, buffer, count, res );
}
default:
WARN( "unknown magic %08x\n", object->magic );
return STATUS_INVALID_HANDLE;
}
}
static NTSTATUS hash_prepare( struct hash *hash )
{
UCHAR buffer[MAX_HASH_BLOCK_BITS / 8] = {0};
int block_bytes, i;
NTSTATUS status;
/* initialize hash */
if ((status = hash_init( &hash->inner, hash->alg_id ))) return status;
if (!(hash->flags & HASH_FLAG_HMAC)) return STATUS_SUCCESS;
/* initialize hmac */
if ((status = hash_init( &hash->outer, hash->alg_id ))) return status;
block_bytes = builtin_algorithms[hash->alg_id].block_bits / 8;
if (hash->secret_len > block_bytes)
{
struct hash_impl temp;
if ((status = hash_init( &temp, hash->alg_id ))) return status;
if ((status = hash_update( &temp, hash->alg_id, hash->secret, hash->secret_len ))) return status;
if ((status = hash_finish( &temp, hash->alg_id, buffer,
builtin_algorithms[hash->alg_id].hash_length ))) return status;
}
else memcpy( buffer, hash->secret, hash->secret_len );
for (i = 0; i < block_bytes; i++) buffer[i] ^= 0x5c;
if ((status = hash_update( &hash->outer, hash->alg_id, buffer, block_bytes ))) return status;
for (i = 0; i < block_bytes; i++) buffer[i] ^= (0x5c ^ 0x36);
return hash_update( &hash->inner, hash->alg_id, buffer, block_bytes );
}
static NTSTATUS hash_create( const struct algorithm *alg, UCHAR *secret, ULONG secret_len, ULONG flags,
struct hash **ret_hash )
{
struct hash *hash;
NTSTATUS status;
if (!(hash = heap_alloc_zero( sizeof(*hash) ))) return STATUS_NO_MEMORY;
hash->hdr.magic = MAGIC_HASH;
hash->alg_id = alg->id;
if (alg->flags & BCRYPT_ALG_HANDLE_HMAC_FLAG) hash->flags = HASH_FLAG_HMAC;
if ((alg->flags & BCRYPT_HASH_REUSABLE_FLAG) || (flags & BCRYPT_HASH_REUSABLE_FLAG))
hash->flags |= HASH_FLAG_REUSABLE;
if (secret_len && !(hash->secret = heap_alloc( secret_len )))
{
heap_free( hash );
return STATUS_NO_MEMORY;
}
memcpy( hash->secret, secret, secret_len );
hash->secret_len = secret_len;
if ((status = hash_prepare( hash )))
{
heap_free( hash->secret );
heap_free( hash );
return status;
}
*ret_hash = hash;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptCreateHash( BCRYPT_ALG_HANDLE algorithm, BCRYPT_HASH_HANDLE *handle, UCHAR *object,
ULONG object_len, UCHAR *secret, ULONG secret_len, ULONG flags )
{
struct algorithm *alg = algorithm;
struct hash *hash;
NTSTATUS status;
TRACE( "%p, %p, %p, %u, %p, %u, %08x\n", algorithm, handle, object, object_len,
secret, secret_len, flags );
if (flags & ~BCRYPT_HASH_REUSABLE_FLAG)
{
FIXME( "unimplemented flags %08x\n", flags );
return STATUS_NOT_IMPLEMENTED;
}
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
if (object) FIXME( "ignoring object buffer\n" );
if ((status = hash_create( alg, secret, secret_len, flags, &hash ))) return status;
*handle = hash;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptDuplicateHash( BCRYPT_HASH_HANDLE handle, BCRYPT_HASH_HANDLE *handle_copy,
UCHAR *object, ULONG objectlen, ULONG flags )
{
struct hash *hash_orig = handle;
struct hash *hash_copy;
TRACE( "%p, %p, %p, %u, %u\n", handle, handle_copy, object, objectlen, flags );
if (!hash_orig || hash_orig->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
if (!handle_copy) return STATUS_INVALID_PARAMETER;
if (object) FIXME( "ignoring object buffer\n" );
if (!(hash_copy = heap_alloc( sizeof(*hash_copy) )))
return STATUS_NO_MEMORY;
memcpy( hash_copy, hash_orig, sizeof(*hash_orig) );
if (hash_orig->secret && !(hash_copy->secret = heap_alloc( hash_orig->secret_len )))
{
heap_free( hash_copy );
return STATUS_NO_MEMORY;
}
memcpy( hash_copy->secret, hash_orig->secret, hash_orig->secret_len );
*handle_copy = hash_copy;
return STATUS_SUCCESS;
}
static void hash_destroy( struct hash *hash )
{
if (!hash) return;
hash->hdr.magic = 0;
heap_free( hash->secret );
heap_free( hash );
}
NTSTATUS WINAPI BCryptDestroyHash( BCRYPT_HASH_HANDLE handle )
{
struct hash *hash = handle;
TRACE( "%p\n", handle );
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_PARAMETER;
hash_destroy( hash );
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptHashData( BCRYPT_HASH_HANDLE handle, UCHAR *input, ULONG size, ULONG flags )
{
struct hash *hash = handle;
TRACE( "%p, %p, %u, %08x\n", handle, input, size, flags );
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
if (!input) return STATUS_SUCCESS;
return hash_update( &hash->inner, hash->alg_id, input, size );
}
static NTSTATUS hash_finalize( struct hash *hash, UCHAR *output, ULONG size )
{
UCHAR buffer[MAX_HASH_OUTPUT_BYTES];
int hash_length;
NTSTATUS status;
if (!(hash->flags & HASH_FLAG_HMAC))
{
if ((status = hash_finish( &hash->inner, hash->alg_id, output, size ))) return status;
if (hash->flags & HASH_FLAG_REUSABLE) return hash_prepare( hash );
return STATUS_SUCCESS;
}
hash_length = builtin_algorithms[hash->alg_id].hash_length;
if ((status = hash_finish( &hash->inner, hash->alg_id, buffer, hash_length ))) return status;
if ((status = hash_update( &hash->outer, hash->alg_id, buffer, hash_length ))) return status;
if ((status = hash_finish( &hash->outer, hash->alg_id, output, size ))) return status;
if (hash->flags & HASH_FLAG_REUSABLE) return hash_prepare( hash );
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptFinishHash( BCRYPT_HASH_HANDLE handle, UCHAR *output, ULONG size, ULONG flags )
{
struct hash *hash = handle;
TRACE( "%p, %p, %u, %08x\n", handle, output, size, flags );
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
if (!output) return STATUS_INVALID_PARAMETER;
return hash_finalize( hash, output, size );
}
NTSTATUS WINAPI BCryptHash( BCRYPT_ALG_HANDLE algorithm, UCHAR *secret, ULONG secret_len,
UCHAR *input, ULONG input_len, UCHAR *output, ULONG output_len )
{
struct algorithm *alg = algorithm;
struct hash *hash;
NTSTATUS status;
TRACE( "%p, %p, %u, %p, %u, %p, %u\n", algorithm, secret, secret_len, input, input_len, output, output_len );
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
if ((status = hash_create( alg, secret, secret_len, 0, &hash ))) return status;
if ((status = hash_update( &hash->inner, hash->alg_id, input, input_len )))
{
hash_destroy( hash );
return status;
}
status = hash_finalize( hash, output, output_len );
hash_destroy( hash );
return status;
}
static NTSTATUS key_asymmetric_create( struct key **ret_key, struct algorithm *alg, ULONG bitlen,
const UCHAR *pubkey, ULONG pubkey_len )
{
struct key *key;
NTSTATUS status;
if (!key_funcs)
{
ERR( "no encryption support\n" );
return STATUS_NOT_IMPLEMENTED;
}
if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY;
key->hdr.magic = MAGIC_KEY;
key->alg_id = alg->id;
key->u.a.bitlen = bitlen;
if (pubkey_len)
{
if (!(key->u.a.pubkey = heap_alloc( pubkey_len )))
{
heap_free( key );
return STATUS_NO_MEMORY;
}
memcpy( key->u.a.pubkey, pubkey, pubkey_len );
key->u.a.pubkey_len = pubkey_len;
}
if ((status = key_funcs->key_asymmetric_init( key )))
{
heap_free( key->u.a.pubkey );
heap_free( key );
return status;
}
*ret_key = key;
return STATUS_SUCCESS;
}
static BOOL key_is_symmetric( struct key *key )
{
return builtin_algorithms[key->alg_id].class == BCRYPT_CIPHER_INTERFACE;
}
static BOOL is_zero_vector( const UCHAR *vector, ULONG len )
{
ULONG i;
if (!vector) return FALSE;
for (i = 0; i < len; i++) if (vector[i]) return FALSE;
return TRUE;
}
static BOOL is_equal_vector( const UCHAR *vector, ULONG len, const UCHAR *vector2, ULONG len2 )
{
if (!vector && !vector2) return TRUE;
if (len != len2) return FALSE;
return !memcmp( vector, vector2, len );
}
static NTSTATUS key_symmetric_set_vector( struct key *key, UCHAR *vector, ULONG vector_len )
{
BOOL needs_reset = (!is_zero_vector( vector, vector_len ) ||
!is_equal_vector( key->u.s.vector, key->u.s.vector_len, vector, vector_len ));
heap_free( key->u.s.vector );
key->u.s.vector = NULL;
key->u.s.vector_len = 0;
if (vector)
{
if (!(key->u.s.vector = heap_alloc( vector_len ))) return STATUS_NO_MEMORY;
memcpy( key->u.s.vector, vector, vector_len );
key->u.s.vector_len = vector_len;
}
if (needs_reset) key_funcs->key_symmetric_vector_reset( key );
return STATUS_SUCCESS;
}
static NTSTATUS key_import( BCRYPT_ALG_HANDLE algorithm, const WCHAR *type, BCRYPT_KEY_HANDLE *key, UCHAR *object,
ULONG object_len, UCHAR *input, ULONG input_len )
{
ULONG len;
if (!wcscmp( type, BCRYPT_KEY_DATA_BLOB ))
{
BCRYPT_KEY_DATA_BLOB_HEADER *header = (BCRYPT_KEY_DATA_BLOB_HEADER *)input;
if (input_len < sizeof(BCRYPT_KEY_DATA_BLOB_HEADER)) return STATUS_BUFFER_TOO_SMALL;
if (header->dwMagic != BCRYPT_KEY_DATA_BLOB_MAGIC) return STATUS_INVALID_PARAMETER;
if (header->dwVersion != BCRYPT_KEY_DATA_BLOB_VERSION1)
{
FIXME( "unknown key data blob version %u\n", header->dwVersion );
return STATUS_INVALID_PARAMETER;
}
len = header->cbKeyData;
if (len + sizeof(BCRYPT_KEY_DATA_BLOB_HEADER) > input_len) return STATUS_INVALID_PARAMETER;
return BCryptGenerateSymmetricKey( algorithm, key, object, object_len, (UCHAR *)&header[1], len, 0 );
}
else if (!wcscmp( type, BCRYPT_OPAQUE_KEY_BLOB ))
{
if (input_len < sizeof(len)) return STATUS_BUFFER_TOO_SMALL;
len = *(ULONG *)input;
if (len + sizeof(len) > input_len) return STATUS_INVALID_PARAMETER;
return BCryptGenerateSymmetricKey( algorithm, key, object, object_len, input + sizeof(len), len, 0 );
}
FIXME( "unsupported key type %s\n", debugstr_w(type) );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_export( struct key *key, const WCHAR *type, UCHAR *output, ULONG output_len, ULONG *size )
{
if (!wcscmp( type, BCRYPT_KEY_DATA_BLOB ))
{
BCRYPT_KEY_DATA_BLOB_HEADER *header = (BCRYPT_KEY_DATA_BLOB_HEADER *)output;
ULONG req_size = sizeof(BCRYPT_KEY_DATA_BLOB_HEADER) + key->u.s.secret_len;
*size = req_size;
if (output_len < req_size) return STATUS_BUFFER_TOO_SMALL;
if (output)
{
header->dwMagic = BCRYPT_KEY_DATA_BLOB_MAGIC;
header->dwVersion = BCRYPT_KEY_DATA_BLOB_VERSION1;
header->cbKeyData = key->u.s.secret_len;
memcpy( &header[1], key->u.s.secret, key->u.s.secret_len );
}
return STATUS_SUCCESS;
}
else if (!wcscmp( type, BCRYPT_OPAQUE_KEY_BLOB ))
{
ULONG len, req_size = sizeof(len) + key->u.s.secret_len;
*size = req_size;
if (output_len < req_size) return STATUS_BUFFER_TOO_SMALL;
if (output)
{
*(ULONG *)output = key->u.s.secret_len;
memcpy( output + sizeof(len), key->u.s.secret, key->u.s.secret_len );
}
return STATUS_SUCCESS;
}
else if (!wcscmp( type, BCRYPT_RSAPUBLIC_BLOB ) || !wcscmp( type, BCRYPT_DSA_PUBLIC_BLOB ) ||
!wcscmp( type, BCRYPT_ECCPUBLIC_BLOB ) || !wcscmp( type, LEGACY_DSA_V2_PUBLIC_BLOB ))
{
*size = key->u.a.pubkey_len;
if (output_len < key->u.a.pubkey_len) return STATUS_SUCCESS;
if (output) memcpy( output, key->u.a.pubkey, key->u.a.pubkey_len );
return STATUS_SUCCESS;
}
else if (!wcscmp( type, BCRYPT_ECCPRIVATE_BLOB ))
{
return key_funcs->key_export_ecc( key, output, output_len, size );
}
else if (!wcscmp( type, LEGACY_DSA_V2_PRIVATE_BLOB ))
{
return key_funcs->key_export_dsa_capi( key, output, output_len, size );
}
FIXME( "unsupported key type %s\n", debugstr_w(type) );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_encrypt( struct key *key, UCHAR *input, ULONG input_len, void *padding, UCHAR *iv,
ULONG iv_len, UCHAR *output, ULONG output_len, ULONG *ret_len, ULONG flags )
{
ULONG bytes_left = input_len;
UCHAR *buf, *src, *dst;
NTSTATUS status;
if (key->u.s.mode == MODE_ID_GCM)
{
BCRYPT_AUTHENTICATED_CIPHER_MODE_INFO *auth_info = padding;
if (!auth_info) return STATUS_INVALID_PARAMETER;
if (!auth_info->pbNonce) return STATUS_INVALID_PARAMETER;
if (!auth_info->pbTag) return STATUS_INVALID_PARAMETER;
if (auth_info->cbTag < 12 || auth_info->cbTag > 16) return STATUS_INVALID_PARAMETER;
if (auth_info->dwFlags & BCRYPT_AUTH_MODE_CHAIN_CALLS_FLAG)
FIXME( "call chaining not implemented\n" );
if ((status = key_symmetric_set_vector( key, auth_info->pbNonce, auth_info->cbNonce )))
return status;
*ret_len = input_len;
if (flags & BCRYPT_BLOCK_PADDING) return STATUS_INVALID_PARAMETER;
if (input && !output) return STATUS_SUCCESS;
if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if ((status = key_funcs->key_symmetric_set_auth_data( key, auth_info->pbAuthData, auth_info->cbAuthData )))
return status;
if ((status = key_funcs->key_symmetric_encrypt( key, input, input_len, output, output_len ))) return status;
return key_funcs->key_symmetric_get_tag( key, auth_info->pbTag, auth_info->cbTag );
}
*ret_len = input_len;
if (flags & BCRYPT_BLOCK_PADDING)
*ret_len = (input_len + key->u.s.block_size) & ~(key->u.s.block_size - 1);
else if (input_len & (key->u.s.block_size - 1))
return STATUS_INVALID_BUFFER_SIZE;
if (!output) return STATUS_SUCCESS;
if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if (key->u.s.mode == MODE_ID_ECB && iv) return STATUS_INVALID_PARAMETER;
if ((status = key_symmetric_set_vector( key, iv, iv_len ))) return status;
src = input;
dst = output;
while (bytes_left >= key->u.s.block_size)
{
if ((status = key_funcs->key_symmetric_encrypt( key, src, key->u.s.block_size, dst, key->u.s.block_size )))
return status;
if (key->u.s.mode == MODE_ID_ECB && (status = key_symmetric_set_vector( key, NULL, 0 )))
return status;
bytes_left -= key->u.s.block_size;
src += key->u.s.block_size;
dst += key->u.s.block_size;
}
if (flags & BCRYPT_BLOCK_PADDING)
{
if (!(buf = heap_alloc( key->u.s.block_size ))) return STATUS_NO_MEMORY;
memcpy( buf, src, bytes_left );
memset( buf + bytes_left, key->u.s.block_size - bytes_left, key->u.s.block_size - bytes_left );
status = key_funcs->key_symmetric_encrypt( key, buf, key->u.s.block_size, dst, key->u.s.block_size );
heap_free( buf );
}
return status;
}
static NTSTATUS key_symmetric_decrypt( struct key *key, UCHAR *input, ULONG input_len, void *padding, UCHAR *iv,
ULONG iv_len, UCHAR *output, ULONG output_len, ULONG *ret_len, ULONG flags )
{
ULONG bytes_left = input_len;
UCHAR *buf, *src, *dst;
NTSTATUS status;
if (key->u.s.mode == MODE_ID_GCM)
{
BCRYPT_AUTHENTICATED_CIPHER_MODE_INFO *auth_info = padding;
UCHAR tag[16];
if (!auth_info) return STATUS_INVALID_PARAMETER;
if (!auth_info->pbNonce) return STATUS_INVALID_PARAMETER;
if (!auth_info->pbTag) return STATUS_INVALID_PARAMETER;
if (auth_info->cbTag < 12 || auth_info->cbTag > 16) return STATUS_INVALID_PARAMETER;
if ((status = key_symmetric_set_vector( key, auth_info->pbNonce, auth_info->cbNonce )))
return status;
*ret_len = input_len;
if (flags & BCRYPT_BLOCK_PADDING) return STATUS_INVALID_PARAMETER;
if (!output) return STATUS_SUCCESS;
if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if ((status = key_funcs->key_symmetric_set_auth_data( key, auth_info->pbAuthData, auth_info->cbAuthData )))
return status;
if ((status = key_funcs->key_symmetric_decrypt( key, input, input_len, output, output_len ))) return status;
if ((status = key_funcs->key_symmetric_get_tag( key, tag, sizeof(tag) ))) return status;
if (memcmp( tag, auth_info->pbTag, auth_info->cbTag )) return STATUS_AUTH_TAG_MISMATCH;
return STATUS_SUCCESS;
}
*ret_len = input_len;
if (input_len & (key->u.s.block_size - 1)) return STATUS_INVALID_BUFFER_SIZE;
if (!output) return STATUS_SUCCESS;
if (flags & BCRYPT_BLOCK_PADDING)
{
if (output_len + key->u.s.block_size < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if (input_len < key->u.s.block_size) return STATUS_BUFFER_TOO_SMALL;
bytes_left -= key->u.s.block_size;
}
else if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if (key->u.s.mode == MODE_ID_ECB && iv) return STATUS_INVALID_PARAMETER;
if ((status = key_symmetric_set_vector( key, iv, iv_len ))) return status;
src = input;
dst = output;
while (bytes_left >= key->u.s.block_size)
{
if ((status = key_funcs->key_symmetric_decrypt( key, src, key->u.s.block_size, dst, key->u.s.block_size )))
return status;
if (key->u.s.mode == MODE_ID_ECB && (status = key_symmetric_set_vector( key, NULL, 0 )))
return status;
bytes_left -= key->u.s.block_size;
src += key->u.s.block_size;
dst += key->u.s.block_size;
}
if (flags & BCRYPT_BLOCK_PADDING)
{
if (!(buf = heap_alloc( key->u.s.block_size ))) return STATUS_NO_MEMORY;
status = key_funcs->key_symmetric_decrypt( key, src, key->u.s.block_size, buf, key->u.s.block_size );
if (!status && buf[ key->u.s.block_size - 1 ] <= key->u.s.block_size)
{
*ret_len -= buf[ key->u.s.block_size - 1 ];
if (output_len < *ret_len) status = STATUS_BUFFER_TOO_SMALL;
else memcpy( dst, buf, key->u.s.block_size - buf[ key->u.s.block_size - 1 ] );
}
else status = STATUS_UNSUCCESSFUL; /* FIXME: invalid padding */
heap_free( buf );
}
return status;
}
static NTSTATUS key_asymmetric_decrypt( struct key *key, UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len, ULONG *ret_len )
{
NTSTATUS status;
if (!(status = key_funcs->key_asymmetric_decrypt( key, input, input_len, output, &output_len )))
*ret_len = output_len;
return status;
}
static NTSTATUS key_decrypt( struct key *key, UCHAR *input, ULONG input_len, void *padding, UCHAR *iv,
ULONG iv_len, UCHAR *output, ULONG output_len, ULONG *ret_len, ULONG flags )
{
return key_is_symmetric( key ) ? key_symmetric_decrypt( key, input, input_len, padding, iv, iv_len,
output, output_len, ret_len, flags ) : key_asymmetric_decrypt( key, input, input_len, output, output_len, ret_len );
}
static NTSTATUS key_import_pair( struct algorithm *alg, const WCHAR *type, BCRYPT_KEY_HANDLE *ret_key, UCHAR *input,
ULONG input_len )
{
struct key *key;
NTSTATUS status;
if (!wcscmp( type, BCRYPT_ECCPUBLIC_BLOB ))
{
BCRYPT_ECCKEY_BLOB *ecc_blob = (BCRYPT_ECCKEY_BLOB *)input;
DWORD key_size, magic, size;
if (input_len < sizeof(*ecc_blob)) return STATUS_INVALID_PARAMETER;
switch (alg->id)
{
case ALG_ID_ECDH_P256:
key_size = 32;
magic = BCRYPT_ECDH_PUBLIC_P256_MAGIC;
break;
case ALG_ID_ECDSA_P256:
key_size = 32;
magic = BCRYPT_ECDSA_PUBLIC_P256_MAGIC;
break;
case ALG_ID_ECDSA_P384:
key_size = 48;
magic = BCRYPT_ECDSA_PUBLIC_P384_MAGIC;
break;
default:
FIXME( "algorithm %u does not yet support importing blob of type %s\n", alg->id, debugstr_w(type) );
return STATUS_NOT_SUPPORTED;
}
if (ecc_blob->dwMagic != magic) return STATUS_INVALID_PARAMETER;
if (ecc_blob->cbKey != key_size || input_len < sizeof(*ecc_blob) + ecc_blob->cbKey * 2)
return STATUS_INVALID_PARAMETER;
size = sizeof(*ecc_blob) + ecc_blob->cbKey * 2;
return key_asymmetric_create( (struct key **)ret_key, alg, key_size * 8, (BYTE *)ecc_blob, size );
}
else if (!wcscmp( type, BCRYPT_ECCPRIVATE_BLOB ))
{
BCRYPT_ECCKEY_BLOB *ecc_blob = (BCRYPT_ECCKEY_BLOB *)input;
DWORD key_size, magic;
if (input_len < sizeof(*ecc_blob)) return STATUS_INVALID_PARAMETER;
switch (alg->id)
{
case ALG_ID_ECDH_P256:
key_size = 32;
magic = BCRYPT_ECDH_PRIVATE_P256_MAGIC;
break;
case ALG_ID_ECDSA_P256:
key_size = 32;
magic = BCRYPT_ECDSA_PRIVATE_P256_MAGIC;
break;
default:
FIXME( "algorithm %u does not yet support importing blob of type %s\n", alg->id, debugstr_w(type) );
return STATUS_NOT_SUPPORTED;
}
if (ecc_blob->dwMagic != magic) return STATUS_INVALID_PARAMETER;
if (ecc_blob->cbKey != key_size || input_len < sizeof(*ecc_blob) + ecc_blob->cbKey * 3)
return STATUS_INVALID_PARAMETER;
if ((status = key_asymmetric_create( &key, alg, key_size * 8, NULL, 0 ))) return status;
if ((status = key_funcs->key_import_ecc( key, input, input_len )))
{
BCryptDestroyKey( key );
return status;
}
*ret_key = key;
return STATUS_SUCCESS;
}
else if (!wcscmp( type, BCRYPT_RSAPUBLIC_BLOB ))
{
BCRYPT_RSAKEY_BLOB *rsa_blob = (BCRYPT_RSAKEY_BLOB *)input;
ULONG size;
if (input_len < sizeof(*rsa_blob)) return STATUS_INVALID_PARAMETER;
if ((alg->id != ALG_ID_RSA && alg->id != ALG_ID_RSA_SIGN) || rsa_blob->Magic != BCRYPT_RSAPUBLIC_MAGIC)
return STATUS_NOT_SUPPORTED;
size = sizeof(*rsa_blob) + rsa_blob->cbPublicExp + rsa_blob->cbModulus;
return key_asymmetric_create( (struct key **)ret_key, alg, rsa_blob->BitLength, (BYTE *)rsa_blob, size );
}
else if (!wcscmp( type, BCRYPT_RSAPRIVATE_BLOB ))
{
BCRYPT_RSAKEY_BLOB *rsa_blob = (BCRYPT_RSAKEY_BLOB *)input;
ULONG size;
if (input_len < sizeof(*rsa_blob)) return STATUS_INVALID_PARAMETER;
if (alg->id != ALG_ID_RSA || rsa_blob->Magic != BCRYPT_RSAPRIVATE_MAGIC)
return STATUS_NOT_SUPPORTED;
size = sizeof(*rsa_blob) + rsa_blob->cbPublicExp + rsa_blob->cbModulus;
if ((status = key_asymmetric_create( &key, alg, rsa_blob->BitLength, (BYTE *)rsa_blob, size )))
return status;
if ((status = key_funcs->key_import_rsa( key, input, input_len )))
{
BCryptDestroyKey( key );
return status;
}
*ret_key = key;
return STATUS_SUCCESS;
}
else if (!wcscmp( type, BCRYPT_DSA_PUBLIC_BLOB ))
{
BCRYPT_DSA_KEY_BLOB *dsa_blob = (BCRYPT_DSA_KEY_BLOB *)input;
ULONG size;
if (input_len < sizeof(*dsa_blob)) return STATUS_INVALID_PARAMETER;
if ((alg->id != ALG_ID_DSA) || dsa_blob->dwMagic != BCRYPT_DSA_PUBLIC_MAGIC)
return STATUS_NOT_SUPPORTED;
size = sizeof(*dsa_blob) + dsa_blob->cbKey * 3;
return key_asymmetric_create( (struct key **)ret_key, alg, dsa_blob->cbKey * 8, (BYTE *)dsa_blob, size );
}
else if (!wcscmp( type, LEGACY_DSA_V2_PRIVATE_BLOB ))
{
BLOBHEADER *hdr = (BLOBHEADER *)input;
DSSPUBKEY *pubkey;
if (input_len < sizeof(*hdr)) return STATUS_INVALID_PARAMETER;
if (hdr->bType != PRIVATEKEYBLOB && hdr->bVersion != 2 && hdr->aiKeyAlg != CALG_DSS_SIGN)
{
FIXME( "blob type %u version %u alg id %u not supported\n", hdr->bType, hdr->bVersion, hdr->aiKeyAlg );
return STATUS_NOT_SUPPORTED;
}
if (alg->id != ALG_ID_DSA)
{
FIXME( "algorithm %u does not support importing blob of type %s\n", alg->id, debugstr_w(type) );
return STATUS_NOT_SUPPORTED;
}
if (input_len < sizeof(*hdr) + sizeof(*pubkey)) return STATUS_INVALID_PARAMETER;
pubkey = (DSSPUBKEY *)(hdr + 1);
if (pubkey->magic != MAGIC_DSS2) return STATUS_NOT_SUPPORTED;
if (input_len < sizeof(*hdr) + sizeof(*pubkey) + (pubkey->bitlen / 8) * 2 + 40 + sizeof(DSSSEED))
return STATUS_INVALID_PARAMETER;
if ((status = key_asymmetric_create( &key, alg, pubkey->bitlen, NULL, 0 ))) return status;
if ((status = key_funcs->key_import_dsa_capi( key, input, input_len )))
{
BCryptDestroyKey( key );
return status;
}
*ret_key = key;
return STATUS_SUCCESS;
}
else if (!wcscmp( type, LEGACY_DSA_V2_PUBLIC_BLOB )) /* not supported on native */
{
BLOBHEADER *hdr = (BLOBHEADER *)input;
DSSPUBKEY *pubkey;
ULONG size;
if (alg->id != ALG_ID_DSA) return STATUS_NOT_SUPPORTED;
if (input_len < sizeof(*hdr)) return STATUS_INVALID_PARAMETER;
if (hdr->bType != PUBLICKEYBLOB && hdr->bVersion != 2 && hdr->aiKeyAlg != CALG_DSS_SIGN)
{
FIXME( "blob type %u version %u alg id %u not supported\n", hdr->bType, hdr->bVersion, hdr->aiKeyAlg );
return STATUS_NOT_SUPPORTED;
}
if (input_len < sizeof(*hdr) + sizeof(*pubkey)) return STATUS_INVALID_PARAMETER;
pubkey = (DSSPUBKEY *)(hdr + 1);
if (pubkey->magic != MAGIC_DSS1) return STATUS_NOT_SUPPORTED;
size = sizeof(*hdr) + sizeof(*pubkey) + (pubkey->bitlen / 8) * 3 + 20 + sizeof(DSSSEED);
if (input_len < size) return STATUS_INVALID_PARAMETER;
if ((status = key_asymmetric_create( &key, alg, pubkey->bitlen, (BYTE *)hdr, size ))) return status;
key->u.a.flags |= KEY_FLAG_LEGACY_DSA_V2;
*ret_key = key;
return STATUS_SUCCESS;
}
FIXME( "unsupported key type %s\n", debugstr_w(type) );
return STATUS_NOT_SUPPORTED;
}
static ULONG get_block_size( struct algorithm *alg )
{
ULONG ret = 0, size = sizeof(ret);
get_alg_property( alg, BCRYPT_BLOCK_LENGTH, (UCHAR *)&ret, sizeof(ret), &size );
return ret;
}
NTSTATUS WINAPI BCryptGenerateSymmetricKey( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HANDLE *handle,
UCHAR *object, ULONG object_len, UCHAR *secret, ULONG secret_len,
ULONG flags )
{
struct algorithm *alg = algorithm;
struct key *key;
ULONG block_size;
NTSTATUS status;
TRACE( "%p, %p, %p, %u, %p, %u, %08x\n", algorithm, handle, object, object_len, secret, secret_len, flags );
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
if (object) FIXME( "ignoring object buffer\n" );
if (!key_funcs)
{
ERR( "no encryption support\n" );
return STATUS_NOT_IMPLEMENTED;
}
if (!(block_size = get_block_size( alg ))) return STATUS_INVALID_PARAMETER;
if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY;
key->hdr.magic = MAGIC_KEY;
key->alg_id = alg->id;
key->u.s.mode = alg->mode;
key->u.s.block_size = block_size;
if (!(key->u.s.secret = heap_alloc( secret_len )))
{
heap_free( key );
return STATUS_NO_MEMORY;
}
memcpy( key->u.s.secret, secret, secret_len );
key->u.s.secret_len = secret_len;
if ((status = key_funcs->key_symmetric_init( key )))
{
heap_free( key->u.s.secret );
heap_free( key );
return status;
}
*handle = key;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptGenerateKeyPair( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HANDLE *handle, ULONG key_len,
ULONG flags )
{
struct algorithm *alg = algorithm;
struct key *key;
NTSTATUS status;
TRACE( "%p, %p, %u, %08x\n", algorithm, handle, key_len, flags );
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
if (!handle) return STATUS_INVALID_PARAMETER;
if (!(status = key_asymmetric_create( &key, alg, key_len, NULL, 0 ))) *handle = key;
return status;
}
NTSTATUS WINAPI BCryptFinalizeKeyPair( BCRYPT_KEY_HANDLE handle, ULONG flags )
{
struct key *key = handle;
TRACE( "%p, %08x\n", key, flags );
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
return key_funcs->key_asymmetric_generate( key );
}
NTSTATUS WINAPI BCryptImportKey( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HANDLE decrypt_key, LPCWSTR type,
BCRYPT_KEY_HANDLE *key, PUCHAR object, ULONG object_len, PUCHAR input,
ULONG input_len, ULONG flags )
{
struct algorithm *alg = algorithm;
TRACE("%p, %p, %s, %p, %p, %u, %p, %u, %u\n", algorithm, decrypt_key, debugstr_w(type), key, object,
object_len, input, input_len, flags);
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
if (!key || !type || !input) return STATUS_INVALID_PARAMETER;
if (decrypt_key)
{
FIXME( "decryption of key not yet supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
return key_import( algorithm, type, key, object, object_len, input, input_len );
}
NTSTATUS WINAPI BCryptExportKey( BCRYPT_KEY_HANDLE export_key, BCRYPT_KEY_HANDLE encrypt_key, LPCWSTR type,
PUCHAR output, ULONG output_len, ULONG *size, ULONG flags )
{
struct key *key = export_key;
TRACE("%p, %p, %s, %p, %u, %p, %u\n", key, encrypt_key, debugstr_w(type), output, output_len, size, flags);
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!type || !size) return STATUS_INVALID_PARAMETER;
if (encrypt_key)
{
FIXME( "encryption of key not yet supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
return key_export( key, type, output, output_len, size );
}
static NTSTATUS key_duplicate( struct key *key_orig, struct key *key_copy )
{
UCHAR *buffer;
NTSTATUS status;
memset( key_copy, 0, sizeof(*key_copy) );
key_copy->hdr = key_orig->hdr;
key_copy->alg_id = key_orig->alg_id;
if (key_is_symmetric( key_orig ))
{
if (!(buffer = heap_alloc( key_orig->u.s.secret_len ))) return STATUS_NO_MEMORY;
memcpy( buffer, key_orig->u.s.secret, key_orig->u.s.secret_len );
key_copy->u.s.mode = key_orig->u.s.mode;
key_copy->u.s.block_size = key_orig->u.s.block_size;
key_copy->u.s.secret = buffer;
key_copy->u.s.secret_len = key_orig->u.s.secret_len;
}
else
{
if (!(buffer = heap_alloc( key_orig->u.a.pubkey_len ))) return STATUS_NO_MEMORY;
memcpy( buffer, key_orig->u.a.pubkey, key_orig->u.a.pubkey_len );
key_copy->u.a.bitlen = key_orig->u.a.bitlen;
key_copy->u.a.flags = key_orig->u.a.flags;
key_copy->u.a.pubkey = buffer;
key_copy->u.a.pubkey_len = key_orig->u.a.pubkey_len;
key_copy->u.a.dss_seed = key_orig->u.a.dss_seed;
if ((status = key_funcs->key_asymmetric_duplicate( key_orig, key_copy ))) return status;
}
return STATUS_SUCCESS;
}
static void key_destroy( struct key *key )
{
if (key_is_symmetric( key ))
{
key_funcs->key_symmetric_destroy( key );
heap_free( key->u.s.vector );
heap_free( key->u.s.secret );
}
else
{
key_funcs->key_asymmetric_destroy( key );
heap_free( key->u.a.pubkey );
}
key->hdr.magic = 0;
heap_free( key );
}
NTSTATUS WINAPI BCryptDuplicateKey( BCRYPT_KEY_HANDLE handle, BCRYPT_KEY_HANDLE *handle_copy,
UCHAR *object, ULONG object_len, ULONG flags )
{
struct key *key_orig = handle;
struct key *key_copy;
NTSTATUS status;
TRACE( "%p, %p, %p, %u, %08x\n", handle, handle_copy, object, object_len, flags );
if (object) FIXME( "ignoring object buffer\n" );
if (!key_orig || key_orig->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!handle_copy) return STATUS_INVALID_PARAMETER;
if (!(key_copy = heap_alloc( sizeof(*key_copy) ))) return STATUS_NO_MEMORY;
if ((status = key_duplicate( key_orig, key_copy )))
{
key_destroy( key_copy );
return status;
}
*handle_copy = key_copy;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptImportKeyPair( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HANDLE decrypt_key, const WCHAR *type,
BCRYPT_KEY_HANDLE *ret_key, UCHAR *input, ULONG input_len, ULONG flags )
{
struct algorithm *alg = algorithm;
TRACE( "%p, %p, %s, %p, %p, %u, %08x\n", algorithm, decrypt_key, debugstr_w(type), ret_key, input,
input_len, flags );
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
if (!ret_key || !type || !input) return STATUS_INVALID_PARAMETER;
if (decrypt_key)
{
FIXME( "decryption of key not yet supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
return key_import_pair( alg, type, ret_key, input, input_len );
}
NTSTATUS WINAPI BCryptSignHash( BCRYPT_KEY_HANDLE handle, void *padding, UCHAR *input, ULONG input_len,
UCHAR *output, ULONG output_len, ULONG *ret_len, ULONG flags )
{
struct key *key = handle;
TRACE( "%p, %p, %p, %u, %p, %u, %p, %08x\n", handle, padding, input, input_len, output, output_len,
ret_len, flags );
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (key_is_symmetric( key ))
{
FIXME( "signing with symmetric keys not yet supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
return key_funcs->key_asymmetric_sign( key, padding, input, input_len, output, output_len, ret_len, flags );
}
NTSTATUS WINAPI BCryptVerifySignature( BCRYPT_KEY_HANDLE handle, void *padding, UCHAR *hash, ULONG hash_len,
UCHAR *signature, ULONG signature_len, ULONG flags )
{
struct key *key = handle;
TRACE( "%p, %p, %p, %u, %p, %u, %08x\n", handle, padding, hash, hash_len, signature, signature_len, flags );
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!hash || !hash_len || !signature || !signature_len) return STATUS_INVALID_PARAMETER;
if (key_is_symmetric( key )) return STATUS_NOT_SUPPORTED;
return key_funcs->key_asymmetric_verify( key, padding, hash, hash_len, signature, signature_len, flags );
}
NTSTATUS WINAPI BCryptDestroyKey( BCRYPT_KEY_HANDLE handle )
{
struct key *key = handle;
TRACE( "%p\n", handle );
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
key_destroy( key );
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptEncrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG input_len, void *padding, UCHAR *iv,
ULONG iv_len, UCHAR *output, ULONG output_len, ULONG *ret_len, ULONG flags )
{
struct key *key = handle;
TRACE( "%p, %p, %u, %p, %p, %u, %p, %u, %p, %08x\n", handle, input, input_len, padding, iv, iv_len, output,
output_len, ret_len, flags );
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!key_is_symmetric( key ))
{
FIXME( "encryption with asymmetric keys not yet supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
if (flags & ~BCRYPT_BLOCK_PADDING)
{
FIXME( "flags %08x not implemented\n", flags );
return STATUS_NOT_IMPLEMENTED;
}
return key_encrypt( key, input, input_len, padding, iv, iv_len, output, output_len, ret_len, flags );
}
NTSTATUS WINAPI BCryptDecrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG input_len, void *padding, UCHAR *iv,
ULONG iv_len, UCHAR *output, ULONG output_len, ULONG *ret_len, ULONG flags )
{
struct key *key = handle;
TRACE( "%p, %p, %u, %p, %p, %u, %p, %u, %p, %08x\n", handle, input, input_len, padding, iv, iv_len, output,
output_len, ret_len, flags );
if (!key || key->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!key_is_symmetric( key ))
{
FIXME( "decryption with asymmetric keys not yet supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
if (flags & ~BCRYPT_BLOCK_PADDING)
{
FIXME( "flags %08x not supported\n", flags );
return STATUS_NOT_IMPLEMENTED;
}
return key_decrypt( key, input, input_len, padding, iv, iv_len, output, output_len, ret_len, flags );
}
NTSTATUS WINAPI BCryptSetProperty( BCRYPT_HANDLE handle, const WCHAR *prop, UCHAR *value, ULONG size, ULONG flags )
{
struct object *object = handle;
TRACE( "%p, %s, %p, %u, %08x\n", handle, debugstr_w(prop), value, size, flags );
if (!object) return STATUS_INVALID_HANDLE;
switch (object->magic)
{
case MAGIC_ALG:
{
struct algorithm *alg = (struct algorithm *)object;
return set_alg_property( alg, prop, value, size, flags );
}
case MAGIC_KEY:
{
struct key *key = (struct key *)object;
return key_funcs->key_set_property( key, prop, value, size, flags );
}
default:
WARN( "unknown magic %08x\n", object->magic );
return STATUS_INVALID_HANDLE;
}
}
#define HMAC_PAD_LEN 64
NTSTATUS WINAPI BCryptDeriveKeyCapi( BCRYPT_HASH_HANDLE handle, BCRYPT_ALG_HANDLE halg, UCHAR *key, ULONG keylen, ULONG flags )
{
struct hash *hash = handle;
UCHAR buf[MAX_HASH_OUTPUT_BYTES * 2];
NTSTATUS status;
ULONG len;
TRACE( "%p, %p, %p, %u, %08x\n", handle, halg, key, keylen, flags );
if (!key || !keylen) return STATUS_INVALID_PARAMETER;
if (!hash || hash->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
if (keylen > builtin_algorithms[hash->alg_id].hash_length * 2) return STATUS_INVALID_PARAMETER;
if (halg)
{
FIXME( "algorithm handle not supported\n" );
return STATUS_NOT_IMPLEMENTED;
}
len = builtin_algorithms[hash->alg_id].hash_length;
if ((status = hash_finalize( hash, buf, len ))) return status;
if (len < keylen)
{
UCHAR pad1[HMAC_PAD_LEN], pad2[HMAC_PAD_LEN];
ULONG i;
for (i = 0; i < sizeof(pad1); i++)
{
pad1[i] = 0x36 ^ (i < len ? buf[i] : 0);
pad2[i] = 0x5c ^ (i < len ? buf[i] : 0);
}
if ((status = hash_prepare( hash )) ||
(status = hash_update( &hash->inner, hash->alg_id, pad1, sizeof(pad1) )) ||
(status = hash_finalize( hash, buf, len ))) return status;
if ((status = hash_prepare( hash )) ||
(status = hash_update( &hash->inner, hash->alg_id, pad2, sizeof(pad2) )) ||
(status = hash_finalize( hash, buf + len, len ))) return status;
}
memcpy( key, buf, keylen );
return STATUS_SUCCESS;
}
static NTSTATUS pbkdf2( struct hash *hash, UCHAR *pwd, ULONG pwd_len, UCHAR *salt, ULONG salt_len,
ULONGLONG iterations, ULONG i, UCHAR *dst, ULONG hash_len )
{
NTSTATUS status = STATUS_INVALID_PARAMETER;
UCHAR bytes[4], *buf;
ULONG j, k;
if (!(buf = heap_alloc( hash_len ))) return STATUS_NO_MEMORY;
for (j = 0; j < iterations; j++)
{
if (j == 0)
{
/* use salt || INT(i) */
if ((status = hash_update( &hash->inner, hash->alg_id, salt, salt_len )))
{
heap_free( buf );
return status;
}
bytes[0] = (i >> 24) & 0xff;
bytes[1] = (i >> 16) & 0xff;
bytes[2] = (i >> 8) & 0xff;
bytes[3] = i & 0xff;
status = hash_update( &hash->inner, hash->alg_id, bytes, 4 );
}
else status = hash_update( &hash->inner, hash->alg_id, buf, hash_len ); /* use U_j */
if (status)
{
heap_free( buf );
return status;
}
if ((status = hash_finalize( hash, buf, hash_len )))
{
heap_free( buf );
return status;
}
if (j == 0) memcpy( dst, buf, hash_len );
else for (k = 0; k < hash_len; k++) dst[k] ^= buf[k];
}
heap_free( buf );
return status;
}
NTSTATUS WINAPI BCryptDeriveKeyPBKDF2( BCRYPT_ALG_HANDLE handle, UCHAR *pwd, ULONG pwd_len, UCHAR *salt, ULONG salt_len,
ULONGLONG iterations, UCHAR *dk, ULONG dk_len, ULONG flags )
{
struct algorithm *alg = handle;
ULONG hash_len, block_count, bytes_left, i;
struct hash *hash;
UCHAR *partial;
NTSTATUS status;
TRACE( "%p, %p, %u, %p, %u, %s, %p, %u, %08x\n", handle, pwd, pwd_len, salt, salt_len,
wine_dbgstr_longlong(iterations), dk, dk_len, flags );
if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE;
hash_len = builtin_algorithms[alg->id].hash_length;
if (dk_len <= 0 || dk_len > ((((ULONGLONG)1) << 32) - 1) * hash_len) return STATUS_INVALID_PARAMETER;
block_count = 1 + ((dk_len - 1) / hash_len); /* ceil(dk_len / hash_len) */
bytes_left = dk_len - (block_count - 1) * hash_len;
if ((status = hash_create( alg, pwd, pwd_len, BCRYPT_HASH_REUSABLE_FLAG, &hash ))) return status;
/* full blocks */
for (i = 1; i < block_count; i++)
{
if ((status = pbkdf2( hash, pwd, pwd_len, salt, salt_len, iterations, i, dk + ((i - 1) * hash_len), hash_len )))
{
hash_destroy( hash );
return status;
}
}
/* final partial block */
if (!(partial = heap_alloc( hash_len )))
{
hash_destroy( hash );
return STATUS_NO_MEMORY;
}
if ((status = pbkdf2( hash, pwd, pwd_len, salt, salt_len, iterations, block_count, partial, hash_len )))
{
hash_destroy( hash );
heap_free( partial );
return status;
}
memcpy( dk + ((block_count - 1) * hash_len), partial, bytes_left );
hash_destroy( hash );
heap_free( partial );
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptSecretAgreement(BCRYPT_KEY_HANDLE privatekey, BCRYPT_KEY_HANDLE publickey, BCRYPT_SECRET_HANDLE *handle, ULONG flags)
{
struct key *privkey = privatekey;
struct key *pubkey = publickey;
struct secret *secret;
FIXME( "%p, %p, %p, %08x\n", privatekey, publickey, handle, flags );
if (!privkey || privkey->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!pubkey || pubkey->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
if (!handle) return STATUS_INVALID_PARAMETER;
if (!(secret = heap_alloc_zero( sizeof(*secret) ))) return STATUS_NO_MEMORY;
secret->hdr.magic = MAGIC_SECRET;
*handle = secret;
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptDestroySecret(BCRYPT_SECRET_HANDLE handle)
{
struct secret *secret = handle;
FIXME( "%p\n", handle );
if (!secret || secret->hdr.magic != MAGIC_SECRET) return STATUS_INVALID_HANDLE;
secret->hdr.magic = 0;
heap_free( secret );
return STATUS_SUCCESS;
}
NTSTATUS WINAPI BCryptDeriveKey(BCRYPT_SECRET_HANDLE handle, LPCWSTR kdf, BCryptBufferDesc *parameter,
PUCHAR derived, ULONG derived_size, ULONG *result, ULONG flags)
{
struct secret *secret = handle;
FIXME( "%p, %s, %p, %p, %d, %p, %08x\n", secret, debugstr_w(kdf), parameter, derived, derived_size, result, flags );
if (!secret || secret->hdr.magic != MAGIC_SECRET) return STATUS_INVALID_HANDLE;
if (!kdf) return STATUS_INVALID_PARAMETER;
return STATUS_INTERNAL_ERROR;
}
BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
{
switch (reason)
{
case DLL_PROCESS_ATTACH:
instance = hinst;
DisableThreadLibraryCalls( hinst );
__wine_init_unix_lib( hinst, reason, NULL, &key_funcs );
break;
case DLL_PROCESS_DETACH:
if (reserved) break;
__wine_init_unix_lib( hinst, reason, NULL, NULL );
break;
}
return TRUE;
}
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