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combination of refactoring and get_assertion support

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Conor Patrick
2018-05-12 23:23:03 -04:00
parent 381a9c53b0
commit 48e7feac1d
5 changed files with 558 additions and 85 deletions
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18
crypto.c
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@@ -43,6 +43,10 @@ void crypto_sha256_update(uint8_t * data, size_t len)
sha256_update(&sha256_ctx, data, len);
}
void crypto_sha256_update_secret()
{
sha256_update(&sha256_ctx, master_secret, 32);
}
void crypto_sha256_final(uint8_t * hash)
{
@@ -71,24 +75,24 @@ void crypto_ecc256_sign(uint8_t * data, int len, uint8_t * sig)
}
}
static void generate_private_key(uint8_t * rpId, int len1, uint8_t * entropy, int len2, uint8_t * privkey)
void generate_private_key(uint8_t * data, int len, uint8_t * data2, int len2, uint8_t * privkey)
{
// poor man's hmac
crypto_sha256_init();
crypto_sha256_update(rpId, len1);
crypto_sha256_update(entropy, len2);
crypto_sha256_update(data, len);
crypto_sha256_update(data2, len2);
crypto_sha256_update(master_secret, 32);
crypto_sha256_final(privkey);
}
/*int uECC_compute_public_key(const uint8_t *private_key, uint8_t *public_key, uECC_Curve curve);*/
void crypto_ecc256_derive_public_key(uint8_t * rpId, int len1, uint8_t * entropy, int len2, uint8_t * x, uint8_t * y)
void crypto_ecc256_derive_public_key(uint8_t * data, int len, uint8_t * x, uint8_t * y)
{
uint8_t privkey[32];
uint8_t pubkey[64];
generate_private_key(rpId,len1,entropy,len2,privkey);
generate_private_key(data,len,NULL,0,privkey);
memset(pubkey,0,sizeof(pubkey));
uECC_compute_public_key(privkey, pubkey, _es256_curve);
@@ -96,10 +100,10 @@ void crypto_ecc256_derive_public_key(uint8_t * rpId, int len1, uint8_t * entropy
memmove(y,pubkey+32,32);
}
void crypto_ecc256_load_key(uint8_t * rpId, int len1, uint8_t * entropy, int len2)
void crypto_ecc256_load_key(uint8_t * data, int len)
{
static uint8_t privkey[32];
generate_private_key(rpId,len1,entropy,len2,privkey);
generate_private_key(data,len,NULL,0,privkey);
_signing_key = privkey;
}