Revert "nettle: use rsa_*_key_prepare"

This reverts commit c801a15bca9ea8f3f7abd4be48bebd36c54eeba2.

1 files changed, 12 insertions, 32 deletions

diff --git a/lib/nettle/pk.c b/lib/nettle/pk.c
index ca15d847a8..2fab308112 100644
--- a/lib/nettle/pk.c
+++ b/lib/nettle/pk.c
@@ -88,8 +88,7 @@ _dsa_params_get(const gnutls_pk_params_st * pk_params,
 	memcpy(pub->g, pk_params->params[DSA_G], SIZEOF_MPZT);
 }
 
-/* returns 0 on invalid privkey */
-static unsigned
+static void
 _rsa_params_to_privkey(const gnutls_pk_params_st * pk_params,
 		       struct rsa_private_key *priv)
 {
@@ -99,18 +98,18 @@ _rsa_params_to_privkey(const gnutls_pk_params_st * pk_params,
 	memcpy(priv->c, pk_params->params[5], SIZEOF_MPZT);
 	memcpy(priv->a, pk_params->params[6], SIZEOF_MPZT);
 	memcpy(priv->b, pk_params->params[7], SIZEOF_MPZT);
-	return (unsigned)rsa_private_key_prepare(priv);
+	priv->size =
+	    nettle_mpz_sizeinbase_256_u(TOMPZ
+					(pk_params->params[RSA_MODULUS]));
 }
 
-/* returns 0 on invalid pubkey */
-static unsigned
+static void
 _rsa_params_to_pubkey(const gnutls_pk_params_st * pk_params,
 		      struct rsa_public_key *pub)
 {
 	memcpy(pub->n, pk_params->params[RSA_MODULUS], SIZEOF_MPZT);
 	memcpy(pub->e, pk_params->params[RSA_PUB], SIZEOF_MPZT);
-
-	return (unsigned)rsa_public_key_prepare(pub);
+	pub->size = nettle_mpz_sizeinbase_256_u(pub->n);
 }
 
 static int
@@ -341,13 +340,7 @@ _wrap_nettle_pk_encrypt(gnutls_pk_algorithm_t algo,
 		{
 			struct rsa_public_key pub;
 
-			ret = _rsa_params_to_pubkey(pk_params, &pub);
-			if (ret == 0) {
-				ret =
-				    gnutls_assert_val
-				    (GNUTLS_E_ENCRYPTION_FAILED);
-				goto cleanup;
-			}
+			_rsa_params_to_pubkey(pk_params, &pub);
 
 			ret =
 			    rsa_encrypt(&pub, NULL, rnd_func,
@@ -404,13 +397,8 @@ _wrap_nettle_pk_decrypt(gnutls_pk_algorithm_t algo,
 			size_t length;
 			bigint_t c;
 
-			ret = _rsa_params_to_privkey(pk_params, &priv);
-			if (ret == 0)
-				return gnutls_assert_val(GNUTLS_E_DECRYPTION_FAILED);
-
-			ret = _rsa_params_to_pubkey(pk_params, &pub);
-			if (ret == 0)
-				return gnutls_assert_val(GNUTLS_E_DECRYPTION_FAILED);
+			_rsa_params_to_privkey(pk_params, &priv);
+			_rsa_params_to_pubkey(pk_params, &pub);
 
 			if (ciphertext->size != pub.size)
 				return
@@ -581,13 +569,8 @@ _wrap_nettle_pk_sign(gnutls_pk_algorithm_t algo,
 			struct rsa_public_key pub;
 			mpz_t s;
 
-			ret = _rsa_params_to_privkey(pk_params, &priv);
-			if (ret == 0)
-				return gnutls_assert_val(GNUTLS_E_PK_SIGN_FAILED);
-
-			ret = _rsa_params_to_pubkey(pk_params, &pub);
-			if (ret == 0)
-				return gnutls_assert_val(GNUTLS_E_PK_SIGN_FAILED);
+			_rsa_params_to_privkey(pk_params, &priv);
+			_rsa_params_to_pubkey(pk_params, &pub);
 
 			mpz_init(s);
 
@@ -724,10 +707,7 @@ _wrap_nettle_pk_verify(gnutls_pk_algorithm_t algo,
 		{
 			struct rsa_public_key pub;
 
-			ret = _rsa_params_to_pubkey(pk_params, &pub);
-			if (ret == 0) {
-				return gnutls_assert_val(GNUTLS_E_PK_SIG_VERIFY_FAILED);
-			}
+			_rsa_params_to_pubkey(pk_params, &pub);
 
 			if (signature->size != pub.size)
 				return