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bcrypt: Preparation for asymmetric keys. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
oldstable
Michael Müller 2018-03-26 15:04:32 +02:00 committed by Alexandre Julliard
parent b809b19f84
commit 3f17921d86
1 changed files with 224 additions and 173 deletions
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397
dlls/bcrypt/bcrypt_main.c
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@ -233,21 +233,25 @@ enum mode_id
#define MAX_HASH_OUTPUT_BYTES 64
#define MAX_HASH_BLOCK_BITS 1024
static const struct {
ULONG object_length;
ULONG hash_length;
ULONG block_bits;
static const struct
{
ULONG object_length;
ULONG hash_length;
ULONG block_bits;
const WCHAR *alg_name;
} alg_props[] = {
/* ALG_ID_AES */ { 654, 0, 0, BCRYPT_AES_ALGORITHM },
/* ALG_ID_MD2 */ { 270, 16, 128, BCRYPT_MD2_ALGORITHM },
/* ALG_ID_MD4 */ { 270, 16, 512, BCRYPT_MD4_ALGORITHM },
/* ALG_ID_MD5 */ { 274, 16, 512, BCRYPT_MD5_ALGORITHM },
/* ALG_ID_RNG */ { 0, 0, 0, BCRYPT_RNG_ALGORITHM },
/* ALG_ID_SHA1 */ { 278, 20, 512, BCRYPT_SHA1_ALGORITHM },
/* ALG_ID_SHA256 */ { 286, 32, 512, BCRYPT_SHA256_ALGORITHM },
/* ALG_ID_SHA384 */ { 382, 48, 1024, BCRYPT_SHA384_ALGORITHM },
/* ALG_ID_SHA512 */ { 382, 64, 1024, BCRYPT_SHA512_ALGORITHM }
BOOL symmetric;
}
alg_props[] =
{
/* ALG_ID_AES */ { 654, 0, 0, BCRYPT_AES_ALGORITHM, TRUE },
/* ALG_ID_MD2 */ { 270, 16, 128, BCRYPT_MD2_ALGORITHM, FALSE },
/* ALG_ID_MD4 */ { 270, 16, 512, BCRYPT_MD4_ALGORITHM, FALSE },
/* ALG_ID_MD5 */ { 274, 16, 512, BCRYPT_MD5_ALGORITHM, FALSE },
/* ALG_ID_RNG */ { 0, 0, 0, BCRYPT_RNG_ALGORITHM, FALSE },
/* ALG_ID_SHA1 */ { 278, 20, 512, BCRYPT_SHA1_ALGORITHM, FALSE },
/* ALG_ID_SHA256 */ { 286, 32, 512, BCRYPT_SHA256_ALGORITHM, FALSE },
/* ALG_ID_SHA384 */ { 382, 48, 1024, BCRYPT_SHA384_ALGORITHM, FALSE },
/* ALG_ID_SHA512 */ { 382, 64, 1024, BCRYPT_SHA512_ALGORITHM, FALSE }
};
struct algorithm
@ -856,21 +860,28 @@ NTSTATUS WINAPI BCryptHash( BCRYPT_ALG_HANDLE algorithm, UCHAR *secret, ULONG se
}
#if defined(HAVE_GNUTLS_CIPHER_INIT) && !defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H)
struct key
struct key_symmetric
{
struct object hdr;
enum alg_id alg_id;
enum mode_id mode;
ULONG block_size;
gnutls_cipher_hd_t handle;
UCHAR *secret;
ULONG secret_len;
enum mode_id mode;
ULONG block_size;
gnutls_cipher_hd_t handle;
UCHAR *secret;
ULONG secret_len;
};
#elif defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
struct key
{
struct object hdr;
enum alg_id alg_id;
struct object hdr;
enum alg_id alg_id;
union
{
struct key_symmetric s;
} u;
};
#elif defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
struct key_symmetric
{
enum mode_id mode;
ULONG block_size;
CCCryptorRef ref_encrypt;
@ -878,16 +889,39 @@ struct key
UCHAR *secret;
ULONG secret_len;
};
#else
struct key
{
struct object hdr;
enum alg_id alg_id;
union
{
struct key_symmetric s;
} u;
};
#else
struct key_symmetric
{
enum mode_id mode;
ULONG block_size;
};
struct key
{
struct object hdr;
union
{
struct key_symmetric s;
} u;
};
#endif
#if defined(HAVE_GNUTLS_CIPHER_INIT) || defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
static inline BOOL key_is_symmetric( struct key *key )
{
return alg_props[key->alg_id].symmetric;
}
static ULONG get_block_size( struct algorithm *alg )
{
ULONG ret = 0, size = sizeof(ret);
@ -900,15 +934,15 @@ static NTSTATUS key_export( struct key *key, const WCHAR *type, UCHAR *output, U
if (!strcmpW( 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->secret_len;
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;
header->dwMagic = BCRYPT_KEY_DATA_BLOB_MAGIC;
header->dwVersion = BCRYPT_KEY_DATA_BLOB_VERSION1;
header->cbKeyData = key->secret_len;
memcpy( &header[1], key->secret, key->secret_len );
header->cbKeyData = key->u.s.secret_len;
memcpy( &header[1], key->u.s.secret, key->u.s.secret_len );
return STATUS_SUCCESS;
}
@ -920,23 +954,25 @@ static NTSTATUS key_duplicate( struct key *key_orig, struct key *key_copy )
{
UCHAR *buffer;
if (!(buffer = heap_alloc( key_orig->secret_len ))) return STATUS_NO_MEMORY;
memcpy( buffer, key_orig->secret, key_orig->secret_len );
if (!key_is_symmetric( key_orig )) return STATUS_NOT_IMPLEMENTED;
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 );
memset( key_copy, 0, sizeof(*key_copy) );
key_copy->hdr = key_orig->hdr;
key_copy->alg_id = key_orig->alg_id;
key_copy->mode = key_orig->mode;
key_copy->block_size = key_orig->block_size;
key_copy->secret = buffer;
key_copy->secret_len = key_orig->secret_len;
key_copy->hdr = key_orig->hdr;
key_copy->alg_id = key_orig->alg_id;
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;
return STATUS_SUCCESS;
}
#endif
#if defined(HAVE_GNUTLS_CIPHER_INIT) && !defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H)
static NTSTATUS key_init( struct key *key, struct algorithm *alg, const UCHAR *secret, ULONG secret_len )
static NTSTATUS key_symmetric_init( struct key *key, struct algorithm *alg, const UCHAR *secret, ULONG secret_len )
{
UCHAR *buffer;
@ -952,15 +988,15 @@ static NTSTATUS key_init( struct key *key, struct algorithm *alg, const UCHAR *s
return STATUS_NOT_SUPPORTED;
}
if (!(key->block_size = get_block_size( alg ))) return STATUS_INVALID_PARAMETER;
if (!(key->u.s.block_size = get_block_size( alg ))) return STATUS_INVALID_PARAMETER;
if (!(buffer = heap_alloc( secret_len ))) return STATUS_NO_MEMORY;
memcpy( buffer, secret, secret_len );
key->alg_id = alg->id;
key->mode = alg->mode;
key->handle = 0; /* initialized on first use */
key->secret = buffer;
key->secret_len = secret_len;
key->alg_id = alg->id;
key->u.s.mode = alg->mode;
key->u.s.handle = 0; /* initialized on first use */
key->u.s.secret = buffer;
key->u.s.secret_len = secret_len;
return STATUS_SUCCESS;
}
@ -971,17 +1007,17 @@ static NTSTATUS set_key_property( struct key *key, const WCHAR *prop, UCHAR *val
{
if (!strncmpW( (WCHAR *)value, BCRYPT_CHAIN_MODE_ECB, size ))
{
key->mode = MODE_ID_ECB;
key->u.s.mode = MODE_ID_ECB;
return STATUS_SUCCESS;
}
else if (!strncmpW( (WCHAR *)value, BCRYPT_CHAIN_MODE_CBC, size ))
{
key->mode = MODE_ID_CBC;
key->u.s.mode = MODE_ID_CBC;
return STATUS_SUCCESS;
}
else if (!strncmpW( (WCHAR *)value, BCRYPT_CHAIN_MODE_GCM, size ))
{
key->mode = MODE_ID_GCM;
key->u.s.mode = MODE_ID_GCM;
return STATUS_SUCCESS;
}
else
@ -1001,53 +1037,54 @@ static gnutls_cipher_algorithm_t get_gnutls_cipher( const struct key *key )
{
case ALG_ID_AES:
WARN( "handle block size\n" );
switch (key->mode)
switch (key->u.s.mode)
{
case MODE_ID_GCM:
if (key->secret_len == 16) return GNUTLS_CIPHER_AES_128_GCM;
if (key->secret_len == 32) return GNUTLS_CIPHER_AES_256_GCM;
break;
case MODE_ID_ECB: /* can be emulated with CBC + empty IV */
case MODE_ID_CBC:
if (key->secret_len == 16) return GNUTLS_CIPHER_AES_128_CBC;
if (key->secret_len == 24) return GNUTLS_CIPHER_AES_192_CBC;
if (key->secret_len == 32) return GNUTLS_CIPHER_AES_256_CBC;
break;
default:
break;
case MODE_ID_GCM:
if (key->u.s.secret_len == 16) return GNUTLS_CIPHER_AES_128_GCM;
if (key->u.s.secret_len == 32) return GNUTLS_CIPHER_AES_256_GCM;
break;
case MODE_ID_ECB: /* can be emulated with CBC + empty IV */
case MODE_ID_CBC:
if (key->u.s.secret_len == 16) return GNUTLS_CIPHER_AES_128_CBC;
if (key->u.s.secret_len == 24) return GNUTLS_CIPHER_AES_192_CBC;
if (key->u.s.secret_len == 32) return GNUTLS_CIPHER_AES_256_CBC;
break;
default:
break;
}
FIXME( "aes mode %u with key length %u not supported\n", key->mode, key->secret_len );
FIXME( "AES mode %u with key length %u not supported\n", key->u.s.mode, key->u.s.secret_len );
return GNUTLS_CIPHER_UNKNOWN;
default:
FIXME( "algorithm %u not supported\n", key->alg_id );
return GNUTLS_CIPHER_UNKNOWN;
}
}
static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
static NTSTATUS key_symmetric_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
{
gnutls_cipher_algorithm_t cipher;
gnutls_datum_t secret, vector;
int ret;
if (key->handle)
if (key->u.s.handle)
{
pgnutls_cipher_deinit( key->handle );
key->handle = NULL;
pgnutls_cipher_deinit( key->u.s.handle );
key->u.s.handle = NULL;
}
if ((cipher = get_gnutls_cipher( key )) == GNUTLS_CIPHER_UNKNOWN)
return STATUS_NOT_SUPPORTED;
secret.data = key->secret;
secret.size = key->secret_len;
secret.data = key->u.s.secret;
secret.size = key->u.s.secret_len;
if (iv)
{
vector.data = iv;
vector.size = iv_len;
}
if ((ret = pgnutls_cipher_init( &key->handle, cipher, &secret, iv ? &vector : NULL )))
if ((ret = pgnutls_cipher_init( &key->u.s.handle, cipher, &secret, iv ? &vector : NULL )))
{
pgnutls_perror( ret );
return STATUS_INTERNAL_ERROR;
@ -1056,11 +1093,13 @@ static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
return STATUS_SUCCESS;
}
static NTSTATUS key_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len )
static NTSTATUS key_symmetric_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len )
{
int ret;
if ((ret = pgnutls_cipher_add_auth( key->handle, auth_data, len )))
if (!auth_data) return STATUS_SUCCESS;
if ((ret = pgnutls_cipher_add_auth( key->u.s.handle, auth_data, len )))
{
pgnutls_perror( ret );
return STATUS_INTERNAL_ERROR;
@ -1069,12 +1108,12 @@ static NTSTATUS key_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len
return STATUS_SUCCESS;
}
static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
static NTSTATUS key_symmetric_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
{
int ret;
if ((ret = pgnutls_cipher_encrypt2( key->handle, input, input_len, output, output_len )))
if ((ret = pgnutls_cipher_encrypt2( key->u.s.handle, input, input_len, output, output_len )))
{
pgnutls_perror( ret );
return STATUS_INTERNAL_ERROR;
@ -1083,12 +1122,12 @@ static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_le
return STATUS_SUCCESS;
}
static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
static NTSTATUS key_symmetric_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
{
int ret;
if ((ret = pgnutls_cipher_decrypt2( key->handle, input, input_len, output, output_len )))
if ((ret = pgnutls_cipher_decrypt2( key->u.s.handle, input, input_len, output, output_len )))
{
pgnutls_perror( ret );
return STATUS_INTERNAL_ERROR;
@ -1097,11 +1136,11 @@ static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_le
return STATUS_SUCCESS;
}
static NTSTATUS key_get_tag( struct key *key, UCHAR *tag, ULONG len )
static NTSTATUS key_symmetric_get_tag( struct key *key, UCHAR *tag, ULONG len )
{
int ret;
if ((ret = pgnutls_cipher_tag( key->handle, tag, len )))
if ((ret = pgnutls_cipher_tag( key->u.s.handle, tag, len )))
{
pgnutls_perror( ret );
return STATUS_INTERNAL_ERROR;
@ -1112,13 +1151,13 @@ static NTSTATUS key_get_tag( struct key *key, UCHAR *tag, ULONG len )
static NTSTATUS key_destroy( struct key *key )
{
if (key->handle) pgnutls_cipher_deinit( key->handle );
heap_free( key->secret );
if (key->u.s.handle) pgnutls_cipher_deinit( key->u.s.handle );
heap_free( key->u.s.secret );
heap_free( key );
return STATUS_SUCCESS;
}
#elif defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
static NTSTATUS key_init( struct key *key, struct algorithm *alg, const UCHAR *secret, ULONG secret_len )
static NTSTATUS key_symmetric_init( struct key *key, struct algorithm *alg, const UCHAR *secret, ULONG secret_len )
{
UCHAR *buffer;
@ -1141,16 +1180,16 @@ static NTSTATUS key_init( struct key *key, struct algorithm *alg, const UCHAR *s
return STATUS_NOT_SUPPORTED;
}
if (!(key->block_size = get_block_size( alg ))) return STATUS_INVALID_PARAMETER;
if (!(key->u.s.block_size = get_block_size( alg ))) return STATUS_INVALID_PARAMETER;
if (!(buffer = heap_alloc( secret_len ))) return STATUS_NO_MEMORY;
memcpy( buffer, secret, secret_len );
key->alg_id = alg->id;
key->mode = alg->mode;
key->ref_encrypt = NULL; /* initialized on first use */
key->ref_decrypt = NULL;
key->secret = buffer;
key->secret_len = secret_len;
key->alg_id = alg->id;
key->u.s.mode = alg->mode;
key->u.s.ref_encrypt = NULL; /* initialized on first use */
key->u.s.ref_decrypt = NULL;
key->u.s.secret = buffer;
key->u.s.secret_len = secret_len;
return STATUS_SUCCESS;
}
@ -1161,12 +1200,12 @@ static NTSTATUS set_key_property( struct key *key, const WCHAR *prop, UCHAR *val
{
if (!strncmpW( (WCHAR *)value, BCRYPT_CHAIN_MODE_ECB, size ))
{
key->mode = MODE_ID_ECB;
key->u.s.mode = MODE_ID_ECB;
return STATUS_SUCCESS;
}
else if (!strncmpW( (WCHAR *)value, BCRYPT_CHAIN_MODE_CBC, size ))
{
key->mode = MODE_ID_CBC;
key->u.s.mode = MODE_ID_CBC;
return STATUS_SUCCESS;
}
else
@ -1182,64 +1221,64 @@ static NTSTATUS set_key_property( struct key *key, const WCHAR *prop, UCHAR *val
static CCMode get_cryptor_mode( struct key *key )
{
switch (key->mode)
switch (key->u.s.mode)
{
case MODE_ID_ECB: return kCCModeECB;
case MODE_ID_CBC: return kCCModeCBC;
default:
FIXME( "unsupported mode %u\n", key->mode );
FIXME( "unsupported mode %u\n", key->u.s.mode );
return 0;
}
}
static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
static NTSTATUS key_symmetric_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
{
CCCryptorStatus status;
CCMode mode;
if (!(mode = get_cryptor_mode( key ))) return STATUS_NOT_SUPPORTED;
if (key->ref_encrypt)
if (key->u.s.ref_encrypt)
{
CCCryptorRelease( key->ref_encrypt );
key->ref_encrypt = NULL;
CCCryptorRelease( key->u.s.ref_encrypt );
key->u.s.ref_encrypt = NULL;
}
if (key->ref_decrypt)
if (key->u.s.ref_decrypt)
{
CCCryptorRelease( key->ref_decrypt );
key->ref_decrypt = NULL;
CCCryptorRelease( key->u.s.ref_decrypt );
key->u.s.ref_decrypt = NULL;
}
if ((status = CCCryptorCreateWithMode( kCCEncrypt, mode, kCCAlgorithmAES128, ccNoPadding, iv, key->secret,
key->secret_len, NULL, 0, 0, 0, &key->ref_encrypt )) != kCCSuccess)
if ((status = CCCryptorCreateWithMode( kCCEncrypt, mode, kCCAlgorithmAES128, ccNoPadding, iv, key->u.s.secret,
key->u.s.secret_len, NULL, 0, 0, 0, &key->u.s.ref_encrypt )) != kCCSuccess)
{
WARN( "CCCryptorCreateWithMode failed %d\n", status );
return STATUS_INTERNAL_ERROR;
}
if ((status = CCCryptorCreateWithMode( kCCDecrypt, mode, kCCAlgorithmAES128, ccNoPadding, iv, key->secret,
key->secret_len, NULL, 0, 0, 0, &key->ref_decrypt )) != kCCSuccess)
if ((status = CCCryptorCreateWithMode( kCCDecrypt, mode, kCCAlgorithmAES128, ccNoPadding, iv, key->u.s.secret,
key->u.s.secret_len, NULL, 0, 0, 0, &key->u.s.ref_decrypt )) != kCCSuccess)
{
WARN( "CCCryptorCreateWithMode failed %d\n", status );
CCCryptorRelease( key->ref_encrypt );
key->ref_encrypt = NULL;
CCCryptorRelease( key->u.s.ref_encrypt );
key->u.s.ref_encrypt = NULL;
return STATUS_INTERNAL_ERROR;
}
return STATUS_SUCCESS;
}
static NTSTATUS key_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len )
static NTSTATUS key_symmetric_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len )
{
FIXME( "not implemented on Mac\n" );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
static NTSTATUS key_symmetric_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
{
CCCryptorStatus status;
if ((status = CCCryptorUpdate( key->ref_encrypt, input, input_len, output, output_len, NULL )) != kCCSuccess)
if ((status = CCCryptorUpdate( key->u.s.ref_encrypt, input, input_len, output, output_len, NULL )) != kCCSuccess)
{
WARN( "CCCryptorUpdate failed %d\n", status );
return STATUS_INTERNAL_ERROR;
@ -1248,12 +1287,12 @@ static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_le
return STATUS_SUCCESS;
}
static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
static NTSTATUS key_symmetric_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
{
CCCryptorStatus status;
if ((status = CCCryptorUpdate( key->ref_decrypt, input, input_len, output, output_len, NULL )) != kCCSuccess)
if ((status = CCCryptorUpdate( key->u.s.ref_decrypt, input, input_len, output, output_len, NULL )) != kCCSuccess)
{
WARN( "CCCryptorUpdate failed %d\n", status );
return STATUS_INTERNAL_ERROR;
@ -1262,7 +1301,7 @@ static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_le
return STATUS_SUCCESS;
}
static NTSTATUS key_get_tag( struct key *key, UCHAR *tag, ULONG len )
static NTSTATUS key_symmetric_get_tag( struct key *key, UCHAR *tag, ULONG len )
{
FIXME( "not implemented on Mac\n" );
return STATUS_NOT_IMPLEMENTED;
@ -1270,14 +1309,14 @@ static NTSTATUS key_get_tag( struct key *key, UCHAR *tag, ULONG len )
static NTSTATUS key_destroy( struct key *key )
{
if (key->ref_encrypt) CCCryptorRelease( key->ref_encrypt );
if (key->ref_decrypt) CCCryptorRelease( key->ref_decrypt );
heap_free( key->secret );
if (key->u.s.ref_encrypt) CCCryptorRelease( key->u.s.ref_encrypt );
if (key->u.s.ref_decrypt) CCCryptorRelease( key->u.s.ref_decrypt );
heap_free( key->u.s.secret );
heap_free( key );
return STATUS_SUCCESS;
}
#else
static NTSTATUS key_init( struct key *key, struct algorithm *alg, const UCHAR *secret, ULONG secret_len )
static NTSTATUS key_symmetric_init( struct key *key, struct algorithm *alg, const UCHAR *secret, ULONG secret_len )
{
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
@ -1295,33 +1334,33 @@ static NTSTATUS key_duplicate( struct key *key_orig, struct key *key_copy )
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
static NTSTATUS key_symmetric_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
{
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len )
static NTSTATUS key_symmetric_set_auth_data( struct key *key, UCHAR *auth_data, ULONG len )
{
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
static NTSTATUS key_symmetric_encrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
{
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
static NTSTATUS key_symmetric_decrypt( struct key *key, const UCHAR *input, ULONG input_len, UCHAR *output,
ULONG output_len )
{
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS key_get_tag( struct key *key, UCHAR *tag, ULONG len )
static NTSTATUS key_symmetric_get_tag( struct key *key, UCHAR *tag, ULONG len )
{
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
@ -1338,6 +1377,12 @@ static NTSTATUS key_export( struct key *key, const WCHAR *type, UCHAR *output, U
ERR( "support for keys not available at build time\n" );
return STATUS_NOT_IMPLEMENTED;
}
static inline BOOL key_is_symmetric( struct key *key )
{
ERR( "support for keys not available at build time\n" );
return FALSE;
}
#endif
NTSTATUS WINAPI BCryptGenerateSymmetricKey( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_HANDLE *handle,
@ -1356,7 +1401,7 @@ NTSTATUS WINAPI BCryptGenerateSymmetricKey( BCRYPT_ALG_HANDLE algorithm, BCRYPT_
if (!(key = heap_alloc( sizeof(*key) ))) return STATUS_NO_MEMORY;
key->hdr.magic = MAGIC_KEY;
if ((status = key_init( key, alg, secret, secret_len )))
if ((status = key_symmetric_init( key, alg, secret, secret_len )))
{
heap_free( key );
return status;
@ -1476,13 +1521,18 @@ NTSTATUS WINAPI BCryptEncrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG inp
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;
}
if (key->mode == MODE_ID_GCM)
if (key->u.s.mode == MODE_ID_GCM)
{
BCRYPT_AUTHENTICATED_CIPHER_MODE_INFO *auth_info = padding;
@ -1493,7 +1543,7 @@ NTSTATUS WINAPI BCryptEncrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG inp
if (auth_info->dwFlags & BCRYPT_AUTH_MODE_CHAIN_CALLS_FLAG)
FIXME( "call chaining not implemented\n" );
if ((status = key_set_params( key, auth_info->pbNonce, auth_info->cbNonce )))
if ((status = key_symmetric_set_params( key, auth_info->pbNonce, auth_info->cbNonce )))
return status;
*ret_len = input_len;
@ -1501,44 +1551,43 @@ NTSTATUS WINAPI BCryptEncrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG inp
if (input && !output) return STATUS_SUCCESS;
if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if (auth_info->pbAuthData && (status = key_set_auth_data( key, auth_info->pbAuthData, auth_info->cbAuthData )))
return status;
if ((status = key_encrypt( key, input, input_len, output, output_len )))
if ((status = key_symmetric_set_auth_data( key, auth_info->pbAuthData, auth_info->cbAuthData )))
return status;
if ((status = key_symmetric_encrypt( key, input, input_len, output, output_len ))) return status;
return key_get_tag( key, auth_info->pbTag, auth_info->cbTag );
return key_symmetric_get_tag( key, auth_info->pbTag, auth_info->cbTag );
}
if ((status = key_set_params( key, iv, iv_len ))) return status;
if ((status = key_symmetric_set_params( key, iv, iv_len ))) return status;
*ret_len = input_len;
if (flags & BCRYPT_BLOCK_PADDING)
*ret_len = (input_len + key->block_size) & ~(key->block_size - 1);
else if (input_len & (key->block_size - 1))
*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->mode == MODE_ID_ECB && iv) return STATUS_INVALID_PARAMETER;
if (key->u.s.mode == MODE_ID_ECB && iv) return STATUS_INVALID_PARAMETER;
src = input;
dst = output;
while (bytes_left >= key->block_size)
while (bytes_left >= key->u.s.block_size)
{
if ((status = key_encrypt( key, src, key->block_size, dst, key->block_size ))) return status;
if (key->mode == MODE_ID_ECB && (status = key_set_params( key, NULL, 0 ))) return status;
bytes_left -= key->block_size;
src += key->block_size;
dst += key->block_size;
if ((status = 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_params( 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->block_size ))) return STATUS_NO_MEMORY;
if (!(buf = heap_alloc( key->u.s.block_size ))) return STATUS_NO_MEMORY;
memcpy( buf, src, bytes_left );
memset( buf + bytes_left, key->block_size - bytes_left, key->block_size - bytes_left );
status = key_encrypt( key, buf, key->block_size, dst, key->block_size );
memset( buf + bytes_left, key->u.s.block_size - bytes_left, key->u.s.block_size - bytes_left );
status = key_symmetric_encrypt( key, buf, key->u.s.block_size, dst, key->u.s.block_size );
heap_free( buf );
}
@ -1558,13 +1607,18 @@ NTSTATUS WINAPI BCryptDecrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG inp
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;
}
if (key->mode == MODE_ID_GCM)
if (key->u.s.mode == MODE_ID_GCM)
{
BCRYPT_AUTHENTICATED_CIPHER_MODE_INFO *auth_info = padding;
UCHAR tag[16];
@ -1574,7 +1628,7 @@ NTSTATUS WINAPI BCryptDecrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG inp
if (!auth_info->pbTag) return STATUS_INVALID_PARAMETER;
if (auth_info->cbTag < 12 || auth_info->cbTag > 16) return STATUS_INVALID_PARAMETER;
if ((status = key_set_params( key, auth_info->pbNonce, auth_info->cbNonce )))
if ((status = key_symmetric_set_params( key, auth_info->pbNonce, auth_info->cbNonce )))
return status;
*ret_len = input_len;
@ -1582,58 +1636,55 @@ NTSTATUS WINAPI BCryptDecrypt( BCRYPT_KEY_HANDLE handle, UCHAR *input, ULONG inp
if (!output) return STATUS_SUCCESS;
if (output_len < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if (auth_info->pbAuthData && (status = key_set_auth_data( key, auth_info->pbAuthData, auth_info->cbAuthData )))
return status;
if ((status = key_decrypt( key, input, input_len, output, output_len )))
if ((status = key_symmetric_set_auth_data( key, auth_info->pbAuthData, auth_info->cbAuthData )))
return status;
if ((status = key_symmetric_decrypt( key, input, input_len, output, output_len ))) return status;
if ((status = key_get_tag( key, tag, sizeof(tag) )))
return status;
if (memcmp( tag, auth_info->pbTag, auth_info->cbTag ))
return STATUS_AUTH_TAG_MISMATCH;
if ((status = 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;
}
if ((status = key_set_params( key, iv, iv_len ))) return status;
if ((status = key_symmetric_set_params( key, iv, iv_len ))) return status;
*ret_len = input_len;
if (input_len & (key->block_size - 1)) return STATUS_INVALID_BUFFER_SIZE;
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->block_size < *ret_len) return STATUS_BUFFER_TOO_SMALL;
if (input_len < key->block_size) return STATUS_BUFFER_TOO_SMALL;
bytes_left -= key->block_size;
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->mode == MODE_ID_ECB && iv) return STATUS_INVALID_PARAMETER;
if (key->u.s.mode == MODE_ID_ECB && iv) return STATUS_INVALID_PARAMETER;
src = input;
dst = output;
while (bytes_left >= key->block_size)
while (bytes_left >= key->u.s.block_size)
{
if ((status = key_decrypt( key, src, key->block_size, dst, key->block_size ))) return status;
if (key->mode == MODE_ID_ECB && (status = key_set_params( key, NULL, 0 ))) return status;
bytes_left -= key->block_size;
src += key->block_size;
dst += key->block_size;
if ((status = 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_params( 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->block_size ))) return STATUS_NO_MEMORY;
status = key_decrypt( key, src, key->block_size, buf, key->block_size );
if (!status && buf[ key->block_size - 1 ] <= key->block_size)
if (!(buf = heap_alloc( key->u.s.block_size ))) return STATUS_NO_MEMORY;
status = 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->block_size - 1 ];
*ret_len -= buf[ key->u.s.block_size - 1 ];
if (output_len < *ret_len) status = STATUS_BUFFER_TOO_SMALL;
else memcpy( dst, buf, key->block_size - buf[ key->block_size - 1 ] );
else memcpy( dst, buf, key->u.s.block_size - buf[ key->u.s.block_size - 1 ] );
}
else
status = STATUS_UNSUCCESSFUL; /* FIXME: invalid padding */
else status = STATUS_UNSUCCESSFUL; /* FIXME: invalid padding */
heap_free( buf );
}