diff options
Diffstat (limited to 'crypto/ffc/ffc_key_validate.c')
| -rw-r--r-- | crypto/ffc/ffc_key_validate.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/crypto/ffc/ffc_key_validate.c b/crypto/ffc/ffc_key_validate.c index 342789621d..a4a2a58e9a 100644 --- a/crypto/ffc/ffc_key_validate.c +++ b/crypto/ffc/ffc_key_validate.c @@ -26,7 +26,7 @@ int ossl_ffc_validate_public_key_partial(const FFC_PARAMS *params, *ret = 0; if (params == NULL || pub_key == NULL || params->p == NULL) { *ret = FFC_ERROR_PASSED_NULL_PARAM; - return 0; + return 1; } ctx = BN_CTX_new_ex(NULL); @@ -39,18 +39,14 @@ int ossl_ffc_validate_public_key_partial(const FFC_PARAMS *params, if (tmp == NULL || !BN_set_word(tmp, 1)) goto err; - if (BN_cmp(pub_key, tmp) <= 0) { + if (BN_cmp(pub_key, tmp) <= 0) *ret |= FFC_ERROR_PUBKEY_TOO_SMALL; - goto err; - } /* Step(1): Verify pub_key <= p-2 */ if (BN_copy(tmp, params->p) == NULL || !BN_sub_word(tmp, 1)) goto err; - if (BN_cmp(pub_key, tmp) >= 0) { + if (BN_cmp(pub_key, tmp) >= 0) *ret |= FFC_ERROR_PUBKEY_TOO_LARGE; - goto err; - } ok = 1; err: if (ctx != NULL) { @@ -73,7 +69,7 @@ int ossl_ffc_validate_public_key(const FFC_PARAMS *params, if (!ossl_ffc_validate_public_key_partial(params, pub_key, ret)) return 0; - if (params->q != NULL) { + if (*ret == 0 && params->q != NULL) { ctx = BN_CTX_new_ex(NULL); if (ctx == NULL) goto err; @@ -84,10 +80,8 @@ int ossl_ffc_validate_public_key(const FFC_PARAMS *params, if (tmp == NULL || !BN_mod_exp(tmp, pub_key, params->q, params->p, ctx)) goto err; - if (!BN_is_one(tmp)) { + if (!BN_is_one(tmp)) *ret |= FFC_ERROR_PUBKEY_INVALID; - goto err; - } } ok = 1; |