diff options
Diffstat (limited to 'src/ltc/pk/pkcs1/pkcs_1_oaep_decode.c')
| -rw-r--r-- | src/ltc/pk/pkcs1/pkcs_1_oaep_decode.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/src/ltc/pk/pkcs1/pkcs_1_oaep_decode.c b/src/ltc/pk/pkcs1/pkcs_1_oaep_decode.c index 9ac9976e..3a87efe6 100644 --- a/src/ltc/pk/pkcs1/pkcs_1_oaep_decode.c +++ b/src/ltc/pk/pkcs1/pkcs_1_oaep_decode.c @@ -10,15 +10,15 @@ */ #include "tomcrypt.h" -/** +/** @file pkcs_1_oaep_decode.c - OAEP Padding for LTC_PKCS #1, Tom St Denis + OAEP Padding for PKCS #1, Tom St Denis */ #ifdef LTC_PKCS_1 /** - LTC_PKCS #1 v2.00 OAEP decode + PKCS #1 v2.00 OAEP decode @param msg The encoded data to decode @param msglen The length of the encoded data (octets) @param lparam The session or system data (can be NULL) @@ -47,9 +47,9 @@ int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, /* default to invalid packet */ *res = 0; - + /* test valid hash */ - if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { return err; } hLen = hash_descriptor[hash_idx].hashsize; @@ -78,11 +78,11 @@ int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, } /* ok so it's now in the form - - 0x00 || maskedseed || maskedDB - + + 0x00 || maskedseed || maskedDB + 1 || hLen || modulus_len - hLen - 1 - + */ /* must have leading 0x00 byte */ @@ -100,7 +100,7 @@ int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, XMEMCPY(DB, msg + x, modulus_len - hLen - 1); x += modulus_len - hLen - 1; - /* compute MGF1 of maskedDB (hLen) */ + /* compute MGF1 of maskedDB (hLen) */ if ((err = pkcs_1_mgf1(hash_idx, DB, modulus_len - hLen - 1, mask, hLen)) != CRYPT_OK) { goto LBL_ERR; } @@ -117,7 +117,7 @@ int pkcs_1_oaep_decode(const unsigned char *msg, unsigned long msglen, /* xor against DB */ for (y = 0; y < (modulus_len - hLen - 1); y++) { - DB[y] ^= mask[y]; + DB[y] ^= mask[y]; } /* now DB == lhash || PS || 0x01 || M, PS == k - mlen - 2hlen - 2 zeroes */ |