Alexandre Julliard : bcrypt: Add a helper function to create an asymmetric key.
Module: wine Branch: master Commit: d70c8e464a56a17f5c0669ff668fb1070781faa6 URL: https://source.winehq.org/git/wine.git/?a=commit;h=d70c8e464a56a17f5c0669ff6... Author: Alexandre Julliard <julliard(a)winehq.org> Date: Tue Sep 29 13:33:37 2020 +0200 bcrypt: Add a helper function to create an asymmetric key. Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/bcrypt/bcrypt_main.c | 89 ++++++++++++++--------------------------------- 1 file changed, 27 insertions(+), 62 deletions(-) diff --git a/dlls/bcrypt/bcrypt_main.c b/dlls/bcrypt/bcrypt_main.c index cd3b746e29..5413d486ed 100644 --- a/dlls/bcrypt/bcrypt_main.c +++ b/dlls/bcrypt/bcrypt_main.c @@ -854,6 +854,24 @@ NTSTATUS WINAPI BCryptHash( BCRYPT_ALG_HANDLE algorithm, UCHAR *secret, ULONG se return BCryptDestroyHash( handle ); } +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 = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; + key->hdr.magic = MAGIC_KEY; + + if ((status = key_asymmetric_init( key, alg, bitlen, pubkey, pubkey_len ))) + { + heap_free( key ); + return status; + } + *ret_key = key; + return STATUS_SUCCESS; +} + #if defined(HAVE_GNUTLS_CIPHER_INIT) || defined(HAVE_COMMONCRYPTO_COMMONCRYPTOR_H) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1080 BOOL key_is_symmetric( struct key *key ) { @@ -1175,18 +1193,8 @@ static NTSTATUS key_import_pair( struct algorithm *alg, const WCHAR *type, BCRYP if (ecc_blob->cbKey != key_size || input_len < sizeof(*ecc_blob) + ecc_blob->cbKey * 2) return STATUS_INVALID_PARAMETER; - if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; - key->hdr.magic = MAGIC_KEY; - size = sizeof(*ecc_blob) + ecc_blob->cbKey * 2; - if ((status = key_asymmetric_init( key, alg, key_size * 8, (BYTE *)ecc_blob, size ))) - { - heap_free( key ); - return status; - } - - *ret_key = key; - return STATUS_SUCCESS; + return key_asymmetric_create( (struct key **)ret_key, alg, key_size * 8, (BYTE *)ecc_blob, size ); } else if (!strcmpW( type, BCRYPT_ECCPRIVATE_BLOB )) { @@ -1215,17 +1223,10 @@ static NTSTATUS key_import_pair( struct algorithm *alg, const WCHAR *type, BCRYP if (ecc_blob->cbKey != key_size || input_len < sizeof(*ecc_blob) + ecc_blob->cbKey * 3) return STATUS_INVALID_PARAMETER; - if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; - key->hdr.magic = MAGIC_KEY; - - if ((status = key_asymmetric_init( key, alg, key_size * 8, NULL, 0 ))) - { - heap_free( key ); - return status; - } + if ((status = key_asymmetric_create( &key, alg, key_size * 8, NULL, 0 ))) return status; if ((status = key_import_ecc( key, input, input_len ))) { - heap_free( key ); + BCryptDestroyKey( key ); return status; } @@ -1241,18 +1242,8 @@ static NTSTATUS key_import_pair( struct algorithm *alg, const WCHAR *type, BCRYP if ((alg->id != ALG_ID_RSA && alg->id != ALG_ID_RSA_SIGN) || rsa_blob->Magic != BCRYPT_RSAPUBLIC_MAGIC) return STATUS_NOT_SUPPORTED; - if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; - key->hdr.magic = MAGIC_KEY; - size = sizeof(*rsa_blob) + rsa_blob->cbPublicExp + rsa_blob->cbModulus; - if ((status = key_asymmetric_init( key, alg, rsa_blob->BitLength, (BYTE *)rsa_blob, size ))) - { - heap_free( key ); - return status; - } - - *ret_key = key; - return STATUS_SUCCESS; + return key_asymmetric_create( (struct key **)ret_key, alg, rsa_blob->BitLength, (BYTE *)rsa_blob, size ); } else if (!strcmpW( type, BCRYPT_DSA_PUBLIC_BLOB )) { @@ -1263,18 +1254,8 @@ static NTSTATUS key_import_pair( struct algorithm *alg, const WCHAR *type, BCRYP if ((alg->id != ALG_ID_DSA) || dsa_blob->dwMagic != BCRYPT_DSA_PUBLIC_MAGIC) return STATUS_NOT_SUPPORTED; - if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; - key->hdr.magic = MAGIC_KEY; - size = sizeof(*dsa_blob) + dsa_blob->cbKey * 3; - if ((status = key_asymmetric_init( key, alg, dsa_blob->cbKey * 8, (BYTE *)dsa_blob, size ))) - { - heap_free( key ); - return status; - } - - *ret_key = key; - return STATUS_SUCCESS; + return key_asymmetric_create( (struct key **)ret_key, alg, dsa_blob->cbKey * 8, (BYTE *)dsa_blob, size ); } else if (!strcmpW( type, LEGACY_DSA_V2_PRIVATE_BLOB )) { @@ -1301,17 +1282,10 @@ static NTSTATUS key_import_pair( struct algorithm *alg, const WCHAR *type, BCRYP if (input_len < sizeof(*hdr) + sizeof(*pubkey) + (pubkey->bitlen / 8) * 2 + 40 + sizeof(DSSSEED)) return STATUS_INVALID_PARAMETER; - if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; - key->hdr.magic = MAGIC_KEY; - - if ((status = key_asymmetric_init( key, alg, pubkey->bitlen, NULL, 0 ))) - { - heap_free( key ); - return status; - } + if ((status = key_asymmetric_create( &key, alg, pubkey->bitlen, NULL, 0 ))) return status; if ((status = key_import_dsa_capi( key, input, input_len ))) { - heap_free( key ); + BCryptDestroyKey( key ); return status; } @@ -1465,17 +1439,8 @@ NTSTATUS WINAPI BCryptGenerateKeyPair( BCRYPT_ALG_HANDLE algorithm, BCRYPT_KEY_H if (!alg || alg->hdr.magic != MAGIC_ALG) return STATUS_INVALID_HANDLE; if (!handle) return STATUS_INVALID_PARAMETER; - if (!(key = heap_alloc_zero( sizeof(*key) ))) return STATUS_NO_MEMORY; - key->hdr.magic = MAGIC_KEY; - - if ((status = key_asymmetric_init( key, alg, key_len, NULL, 0 ))) - { - heap_free( key ); - return status; - } - - *handle = key; - return STATUS_SUCCESS; + if (!(status = key_asymmetric_create( &key, alg, key_len, NULL, 0 ))) *handle = key; + return status; } NTSTATUS WINAPI BCryptFinalizeKeyPair( BCRYPT_KEY_HANDLE handle, ULONG flags )
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Alexandre Julliard