/* Generates a new EC key pair. The private key is a random value and
* the public key is the result of performing a scalar point multiplication
* of that value with the curve's base point.
*/
SECStatus
EC_NewKey(ECParams *ecParams, ECPrivateKey **privKey)
{
SECStatus rv = SECFailure;
#ifndef NSS_DISABLE_ECC
int len;
unsigned char *privKeyBytes = NULL;
if (!ecParams) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
len = ecParams->order.len;
privKeyBytes = ec_GenerateRandomPrivateKey(ecParams->order.data, len);
if (privKeyBytes == NULL) goto cleanup;
/* generate public key */
CHECK_SEC_OK( ec_NewKey(ecParams, privKey, privKeyBytes, len) );
cleanup:
if (privKeyBytes) {
PORT_ZFree(privKeyBytes, len);
}
#if EC_DEBUG
printf("EC_NewKey returning %s\n",
(rv == SECSuccess) ? "success" : "failure");
#endif
#else
PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
#endif /* NSS_DISABLE_ECC */
return rv;
}
/* Generates a new EC key pair. The private key is a random value and
* the public key is the result of performing a scalar point multiplication
* of that value with the curve's base point.
*/
SECStatus
EC_NewKey(ECParams *ecParams, ECPrivateKey **privKey,
const unsigned char* random, int randomlen, int kmflag)
{
SECStatus rv = SECFailure;
int len;
unsigned char *privKeyBytes = NULL;
if (!ecParams) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
len = ecParams->order.len;
privKeyBytes = ec_GenerateRandomPrivateKey(ecParams->order.data, len,
random, randomlen, kmflag);
if (privKeyBytes == NULL) goto cleanup;
/* generate public key */
CHECK_SEC_OK( ec_NewKey(ecParams, privKey, privKeyBytes, len, kmflag) );
cleanup:
if (privKeyBytes) {
PORT_ZFree(privKeyBytes, len * 2);
}
#if EC_DEBUG
printf("EC_NewKey returning %s\n",
(rv == SECSuccess) ? "success" : "failure");
#endif
return rv;
}
/*
** Computes the ECDSA signature on the digest using the given key
** and a random seed.
*/
SECStatus
ECDSA_SignDigest(ECPrivateKey *key, SECItem *signature, const SECItem *digest,
const unsigned char* random, int randomLen, int kmflag)
{
SECStatus rv = SECFailure;
int len;
unsigned char *kBytes= NULL;
if (!key) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* Generate random value k */
len = key->ecParams.order.len;
kBytes = ec_GenerateRandomPrivateKey(key->ecParams.order.data, len,
random, randomLen, kmflag);
if (kBytes == NULL) goto cleanup;
/* Generate ECDSA signature with the specified k value */
rv = ECDSA_SignDigestWithSeed(key, signature, digest, kBytes, len, kmflag);
cleanup:
if (kBytes) {
PORT_ZFree(kBytes, len * 2);
}
#if EC_DEBUG
printf("ECDSA signing %s\n",
(rv == SECSuccess) ? "succeeded" : "failed");
#endif
return rv;
}
/*
** Computes the ECDSA signature on the digest using the given key
** and a random seed.
*/
SECStatus
ECDSA_SignDigest(ECPrivateKey *key, SECItem *signature, const SECItem *digest)
{
SECStatus rv = SECFailure;
#ifndef NSS_DISABLE_ECC
int len;
unsigned char *kBytes = NULL;
if (!key) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* Generate random value k */
len = key->ecParams.order.len;
kBytes = ec_GenerateRandomPrivateKey(key->ecParams.order.data, len);
if (kBytes == NULL)
goto cleanup;
/* Generate ECDSA signature with the specified k value */
rv = ECDSA_SignDigestWithSeed(key, signature, digest, kBytes, len);
cleanup:
if (kBytes) {
PORT_ZFree(kBytes, len);
}
#if EC_DEBUG
printf("ECDSA signing %s\n",
(rv == SECSuccess) ? "succeeded" : "failed");
#endif
#else
PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
#endif /* NSS_DISABLE_ECC */
return rv;
}
