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Avoid malloc in hmac

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--HG--
branch : nocircbuffer
This commit is contained in:
Matt Johnston
2015-03-01 14:46:04 +08:00
parent 579463933b
commit 91ef9b2fa9
2 changed files with 2 additions and 26 deletions
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10
libtomcrypt/src/mac/hmac/hmac_init.c
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@@ -29,7 +29,7 @@
*/
int hmac_init(hmac_state *hmac, int hash, const unsigned char *key, unsigned long keylen)
{
unsigned char *buf;
unsigned char buf[MAXBLOCKSIZE];
unsigned long hashsize;
unsigned long i, z;
int err;
@@ -49,16 +49,9 @@ int hmac_init(hmac_state *hmac, int hash, const unsigned char *key, unsigned lon
return CRYPT_INVALID_KEYSIZE;
}
/* allocate ram for buf */
buf = XMALLOC(HMAC_BLOCKSIZE);
if (buf == NULL) {
return CRYPT_MEM;
}
/* allocate memory for key */
hmac->key = XMALLOC(HMAC_BLOCKSIZE);
if (hmac->key == NULL) {
XFREE(buf);
return CRYPT_MEM;
}
@@ -101,7 +94,6 @@ done:
zeromem(buf, HMAC_BLOCKSIZE);
#endif
XFREE(buf);
return err;
}