Mercurial > dropbear
diff src/pk/pkcs1/pkcs_1_oaep_decode.c @ 209:39d5d58461d6 libtomcrypt-orig LTC_1.05
Import of libtomcrypt 1.05
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Wed, 06 Jul 2005 03:53:40 +0000 |
| parents | 1c15b283127b |
| children |
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--- a/src/pk/pkcs1/pkcs_1_oaep_decode.c Fri May 06 13:23:02 2005 +0000 +++ b/src/pk/pkcs1/pkcs_1_oaep_decode.c Wed Jul 06 03:53:40 2005 +0000 @@ -63,7 +63,7 @@ /* allocate ram for DB/mask/salt of size modulus_len */ DB = XMALLOC(modulus_len); mask = XMALLOC(modulus_len); - seed = XMALLOC(modulus_len); + seed = XMALLOC(hLen); if (DB == NULL || mask == NULL || seed == NULL) { if (DB != NULL) { XFREE(DB); @@ -92,14 +92,13 @@ } /* now read the masked seed */ - for (x = 1, y = 0; y < hLen; y++) { - seed[y] = msg[x++]; - } + x = 1; + XMEMCPY(seed, msg + x, hLen); + x += hLen; /* now read the masked DB */ - for (y = 0; y < modulus_len - hLen - 1; y++) { - DB[y] = msg[x++]; - } + XMEMCPY(DB, msg + x, modulus_len - hLen - 1); + x += modulus_len - hLen - 1; /* compute MGF1 of maskedDB (hLen) */ if ((err = pkcs_1_mgf1(DB, modulus_len - hLen - 1, hash_idx, mask, hLen)) != CRYPT_OK) { @@ -161,9 +160,8 @@ /* copy message */ *outlen = (modulus_len - hLen - 1) - x; - for (y = 0; x != (modulus_len - hLen - 1); ) { - out[y++] = DB[x++]; - } + XMEMCPY(out, DB + x, modulus_len - hLen - 1 - x); + x += modulus_len - hLen - 1; /* valid packet */ *res = 1; @@ -172,7 +170,7 @@ LBL_ERR: #ifdef LTC_CLEAN_STACK zeromem(DB, modulus_len); - zeromem(seed, modulus_len); + zeromem(seed, hLen); zeromem(mask, modulus_len); #endif @@ -184,3 +182,7 @@ } #endif /* PKCS_1 */ + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_oaep_decode.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2005/06/18 02:37:06 $ */