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add public key callbacks for ecc sign/verify, examples

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toddouska
2013-08-22 18:19:39 -07:00
parent bc958f5798
commit e98f5f95c2
10 changed files with 334 additions and 17 deletions
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6
ctaocrypt/src/ecc.c
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@@ -1245,8 +1245,8 @@ void ecc_free(ecc_key* key)
key The corresponding public ECC key
return MP_OKAY if successful (even if the signature is not valid)
*/
int ecc_verify_hash(const byte* sig, word32 siglen, byte* hash, word32 hashlen,
int* stat, ecc_key* key)
int ecc_verify_hash(const byte* sig, word32 siglen, const byte* hash,
word32 hashlen, int* stat, ecc_key* key)
{
ecc_point *mG, *mQ;
mp_int r;
@@ -1324,7 +1324,7 @@ int ecc_verify_hash(const byte* sig, word32 siglen, byte* hash, word32 hashlen,
/* truncate down to byte size, may be all that's needed */
if ( (CYASSL_BIT_SIZE * hashlen) > orderBits)
hashlen = (orderBits + CYASSL_BIT_SIZE - 1)/CYASSL_BIT_SIZE;
err = mp_read_unsigned_bin(&e, (byte*)hash, hashlen);
err = mp_read_unsigned_bin(&e, hash, hashlen);
/* may still need bit truncation too */
if (err == MP_OKAY && (CYASSL_BIT_SIZE * hashlen) > orderBits)