67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// libsodium_wrapper.cpp - Libsodium Wrapper for ColumnLynx
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// Copyright (C) 2025 DcruBro
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// Distributed under the terms of the GNU General Public License, either version 2 only or version 3. See LICENSES/ for details.
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#include <columnlynx/common/libsodium_wrapper.hpp>
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namespace ColumnLynx::Utils {
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LibSodiumWrapper::LibSodiumWrapper() {
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if (sodium_init() < 0) {
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throw std::runtime_error("Failed to initialize libsodium");
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}
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// Generate keypair
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if (crypto_sign_keypair(mPublicKey.data(), mPrivateKey.data()) != 0) {
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throw std::runtime_error("Failed to generate key pair");
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}
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int r;
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// Convert to Curve25519 keys for encryption
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r = crypto_sign_ed25519_pk_to_curve25519(mXPublicKey.data(), mPublicKey.data());
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r = crypto_sign_ed25519_sk_to_curve25519(mXPrivateKey.data(), mPrivateKey.data());
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if (r != 0) {
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throw std::runtime_error("Conversion of signing keys to encryption keys failed!");
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}
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log("Libsodium initialized and keypair generated");
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}
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uint8_t* LibSodiumWrapper::getPublicKey() {
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return mPublicKey.data();
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}
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uint8_t* LibSodiumWrapper::getPrivateKey() {
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return mPrivateKey.data();
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}
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std::array<uint8_t, 32> LibSodiumWrapper::generateRandom256Bit() {
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std::array<uint8_t, 32> randbytes; // 256 bits
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randombytes_buf(randbytes.data(), randbytes.size());
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return randbytes;
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}
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bool LibSodiumWrapper::recomputeKeys(PrivateSeed privateSeed, PublicKey storedPubKey) {
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int res = crypto_sign_seed_keypair(mPublicKey.data(), mPrivateKey.data(), privateSeed.data());
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if (res != 0) {
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return false;
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}
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// Convert to Curve25519 keys for encryption
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res = crypto_sign_ed25519_pk_to_curve25519(mXPublicKey.data(), mPublicKey.data());
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res = crypto_sign_ed25519_sk_to_curve25519(mXPrivateKey.data(), mPrivateKey.data());
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if (res != 0) {
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return false;
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}
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// Compare to stored for verification
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if (sodium_memcmp(mPublicKey.data(), storedPubKey.data(), crypto_sign_PUBLICKEYBYTES) != 0) {
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return false;
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}
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return true;
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}
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} |