diff options
Diffstat (limited to 'libtomcrypt/pk/rsa/rsa_encrypt_key.c')
| -rw-r--r-- | libtomcrypt/pk/rsa/rsa_encrypt_key.c | 97 |
1 files changed, 49 insertions, 48 deletions
diff --git a/libtomcrypt/pk/rsa/rsa_encrypt_key.c b/libtomcrypt/pk/rsa/rsa_encrypt_key.c index 8d3f2db..9367015 100644 --- a/libtomcrypt/pk/rsa/rsa_encrypt_key.c +++ b/libtomcrypt/pk/rsa/rsa_encrypt_key.c @@ -31,62 +31,63 @@ @param key The RSA key to encrypt to @return CRYPT_OK if successful */ -int rsa_encrypt_key_ex(const unsigned char *in, unsigned long inlen, - unsigned char *out, unsigned long *outlen, - const unsigned char *lparam, unsigned long lparamlen, - const struct algo_properties_st *hash, int padding, rsa_key *key) +int rsa_encrypt_key_ex(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *lparam, unsigned long lparamlen, + const struct algo_properties_st *hash, int padding, + rsa_key * key) { - unsigned long modulus_bitlen, modulus_bytelen, x; - int err; + unsigned long modulus_bitlen, modulus_bytelen, x; + int err; - LTC_ARGCHK(in != NULL); - LTC_ARGCHK(out != NULL); - LTC_ARGCHK(outlen != NULL); - LTC_ARGCHK(key != NULL); + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + LTC_ARGCHK(key != NULL); - /* valid padding? */ - if ((padding != LTC_LTC_PKCS_1_V1_5) && - (padding != LTC_LTC_PKCS_1_OAEP)) { - return CRYPT_PK_INVALID_PADDING; - } + /* valid padding? */ + if ((padding != LTC_LTC_PKCS_1_V1_5) && + (padding != LTC_LTC_PKCS_1_OAEP)) { + return CRYPT_PK_INVALID_PADDING; + } - if (padding == LTC_LTC_PKCS_1_OAEP) { - /* valid hash? */ - if ((err = hash_is_valid(hash)) != CRYPT_OK) { - return err; - } - } + if (padding == LTC_LTC_PKCS_1_OAEP) { + /* valid hash? */ + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + } - /* get modulus len in bits */ - modulus_bitlen = mp_count_bits( (&key->N)); + /* get modulus len in bits */ + modulus_bitlen = mp_count_bits((&key->N)); - /* outlen must be at least the size of the modulus */ - modulus_bytelen = mp_unsigned_bin_size( (&key->N)); - if (modulus_bytelen > *outlen) { - *outlen = modulus_bytelen; - return CRYPT_BUFFER_OVERFLOW; - } + /* outlen must be at least the size of the modulus */ + modulus_bytelen = mp_unsigned_bin_size((&key->N)); + if (modulus_bytelen > *outlen) { + *outlen = modulus_bytelen; + return CRYPT_BUFFER_OVERFLOW; + } - if (padding == LTC_LTC_PKCS_1_OAEP) { - /* OAEP pad the key */ - x = *outlen; - if ((err = pkcs_1_oaep_encode(in, inlen, lparam, - lparamlen, modulus_bitlen, hash, - out, &x)) != CRYPT_OK) { - return err; - } - } else { - /* LTC_PKCS #1 v1.5 pad the key */ - x = *outlen; - if ((err = pkcs_1_v1_5_encode(in, inlen, LTC_LTC_PKCS_1_EME, - modulus_bitlen, - out, &x)) != CRYPT_OK) { - return err; - } - } + if (padding == LTC_LTC_PKCS_1_OAEP) { + /* OAEP pad the key */ + x = *outlen; + if ((err = pkcs_1_oaep_encode(in, inlen, lparam, + lparamlen, modulus_bitlen, hash, + out, &x)) != CRYPT_OK) { + return err; + } + } else { + /* LTC_PKCS #1 v1.5 pad the key */ + x = *outlen; + if ((err = pkcs_1_v1_5_encode(in, inlen, LTC_LTC_PKCS_1_EME, + modulus_bitlen, + out, &x)) != CRYPT_OK) { + return err; + } + } - /* rsa exptmod the OAEP or LTC_PKCS #1 v1.5 pad */ - return rsa_exptmod(out, x, out, outlen, PK_PUBLIC, key); + /* rsa exptmod the OAEP or LTC_PKCS #1 v1.5 pad */ + return rsa_exptmod(out, x, out, outlen, PK_PUBLIC, key); } #endif /* LTC_MRSA */ |