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/*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ed25519_ed448.h"
#include "logging.h"
#include "utils.h"
#include "ossl_utils.hpp"
#include <openssl/evp.h>
#include <openssl/err.h>
#include <cassert>
static rnp_result_t
ed_generate_native(rnp::RNG * rng,
std::vector<uint8_t> &privkey,
std::vector<uint8_t> &pubkey,
int nid,
size_t keylen)
{
rnp::ossl::evp::PKeyCtx ctx(EVP_PKEY_CTX_new_id(nid, NULL));
if (!ctx || EVP_PKEY_keygen_init(ctx.get()) <= 0) {
RNP_LOG("Failed to init keygen: %lu", ERR_peek_last_error());
return RNP_ERROR_KEY_GENERATION;
}
EVP_PKEY *rawkey = NULL;
if (EVP_PKEY_keygen(ctx.get(), &rawkey) <= 0) {
RNP_LOG("keygen failed: %lu", ERR_peek_last_error());
return RNP_ERROR_KEY_GENERATION;
}
rnp::ossl::evp::PKey pkey(rawkey);
privkey.resize(keylen);
size_t privlen = keylen;
if (EVP_PKEY_get_raw_private_key(pkey.get(), privkey.data(), &privlen) <= 0) {
RNP_LOG("Failed to get private key: %lu", ERR_peek_last_error());
return RNP_ERROR_KEY_GENERATION;
}
pubkey.resize(keylen);
size_t publen = keylen;
if (EVP_PKEY_get_raw_public_key(pkey.get(), pubkey.data(), &publen) <= 0) {
RNP_LOG("Failed to get public key: %lu", ERR_peek_last_error());
return RNP_ERROR_KEY_GENERATION;
}
return RNP_SUCCESS;
}
static rnp_result_t
ed_sign_native(std::vector<uint8_t> & sig_out,
const std::vector<uint8_t> &key,
const uint8_t * hash,
size_t hash_len,
int nid,
size_t siglen)
{
rnp::ossl::evp::PKey pkey(EVP_PKEY_new_raw_private_key(nid, NULL, key.data(), key.size()));
if (!pkey) {
RNP_LOG("Failed to load private key: %lu", ERR_peek_last_error());
return RNP_ERROR_GENERIC;
}
rnp::ossl::evp::MDCtx md(EVP_MD_CTX_new());
if (!md || EVP_DigestSignInit(md.get(), NULL, NULL, NULL, pkey.get()) <= 0) {
RNP_LOG("Failed to init signing: %lu", ERR_peek_last_error());
return RNP_ERROR_GENERIC;
}
sig_out.resize(siglen);
size_t outlen = siglen;
if (EVP_DigestSign(md.get(), sig_out.data(), &outlen, hash, hash_len) <= 0) {
RNP_LOG("Signing failed: %lu", ERR_peek_last_error());
return RNP_ERROR_GENERIC;
}
sig_out.resize(outlen);
return RNP_SUCCESS;
}
static rnp_result_t
ed_verify_native(const std::vector<uint8_t> &sig,
const std::vector<uint8_t> &key,
const uint8_t * hash,
size_t hash_len,
int nid)
{
rnp::ossl::evp::PKey pkey(EVP_PKEY_new_raw_public_key(nid, NULL, key.data(), key.size()));
if (!pkey) {
RNP_LOG("Failed to load public key: %lu", ERR_peek_last_error());
return RNP_ERROR_VERIFICATION_FAILED;
}
rnp::ossl::evp::MDCtx md(EVP_MD_CTX_new());
if (!md || EVP_DigestVerifyInit(md.get(), NULL, NULL, NULL, pkey.get()) <= 0) {
RNP_LOG("Failed to init verify: %lu", ERR_peek_last_error());
return RNP_ERROR_VERIFICATION_FAILED;
}
if (EVP_DigestVerify(md.get(), sig.data(), sig.size(), hash, hash_len) < 1) {
return RNP_ERROR_VERIFICATION_FAILED;
}
return RNP_SUCCESS;
}
rnp_result_t
generate_ed25519_native(rnp::RNG * rng,
std::vector<uint8_t> &privkey,
std::vector<uint8_t> &pubkey)
{
return ed_generate_native(rng, privkey, pubkey, EVP_PKEY_ED25519, 32);
}
rnp_result_t
ed25519_sign_native(rnp::RNG * rng,
std::vector<uint8_t> & sig_out,
const std::vector<uint8_t> &key,
const uint8_t * hash,
size_t hash_len)
{
return ed_sign_native(sig_out, key, hash, hash_len, EVP_PKEY_ED25519, 64);
}
rnp_result_t
ed25519_verify_native(const std::vector<uint8_t> &sig,
const std::vector<uint8_t> &key,
const uint8_t * hash,
size_t hash_len)
{
return ed_verify_native(sig, key, hash, hash_len, EVP_PKEY_ED25519);
}
rnp_result_t
ed25519_validate_key_native(rnp::RNG *rng, const pgp_ed25519_key_t *key, bool secret)
{
rnp::ossl::evp::PKey pub(
EVP_PKEY_new_raw_public_key(EVP_PKEY_ED25519, NULL, key->pub.data(), key->pub.size()));
if (!pub) {
return RNP_ERROR_BAD_PARAMETERS;
}
if (secret) {
rnp::ossl::evp::PKey priv(EVP_PKEY_new_raw_private_key(
EVP_PKEY_ED25519, NULL, key->priv.data(), key->priv.size()));
if (!priv) {
return RNP_ERROR_SIGNING_FAILED;
}
}
return RNP_SUCCESS;
}
#if defined(ENABLE_CRYPTO_REFRESH)
rnp_result_t
generate_ed448_native(rnp::RNG * rng,
std::vector<uint8_t> &privkey,
std::vector<uint8_t> &pubkey)
{
return ed_generate_native(rng, privkey, pubkey, EVP_PKEY_ED448, 57);
}
rnp_result_t
ed448_sign_native(rnp::RNG * rng,
std::vector<uint8_t> & sig_out,
const std::vector<uint8_t> &key,
const uint8_t * hash,
size_t hash_len)
{
return ed_sign_native(sig_out, key, hash, hash_len, EVP_PKEY_ED448, 114);
}
rnp_result_t
ed448_verify_native(const std::vector<uint8_t> &sig,
const std::vector<uint8_t> &key,
const uint8_t * hash,
size_t hash_len)
{
return ed_verify_native(sig, key, hash, hash_len, EVP_PKEY_ED448);
}
rnp_result_t
ed448_validate_key_native(rnp::RNG *rng, const pgp_ed448_key_t *key, bool secret)
{
rnp::ossl::evp::PKey pub(
EVP_PKEY_new_raw_public_key(EVP_PKEY_ED448, NULL, key->pub.data(), key->pub.size()));
if (!pub) {
return RNP_ERROR_BAD_PARAMETERS;
}
if (secret) {
rnp::ossl::evp::PKey priv(EVP_PKEY_new_raw_private_key(
EVP_PKEY_ED448, NULL, key->priv.data(), key->priv.size()));
if (!priv) {
return RNP_ERROR_SIGNING_FAILED;
}
}
return RNP_SUCCESS;
}
#endif