我正在尝试使用 CryptoPP 实现curve25519 验证。我首先尝试了libsignal
图书馆,女巫显示了正确的结果。然后我用 CryptoPP 尝试了相同的数据,但显示错误的结果。
这是libsignal
用于验证签名的代码:
string pub = str2hex("0504f05568cc7a16fa9b4bc1c9d9294a80b7727e349365f855031a180bf0f80910");
ec_public_key* pub_key;
curve_decode_point(&pub_key, (uint8_t*)pub.data(), pub.size(), 0);
string message = str2hex("05f1fd491d63f1860bdaf3f9b0eb46c2494b7f184a32d9e6c859a421ad284f4307");
string signature = str2hex("5e525df3360ea62281efe8fb9e183521105bb3d9ba8ad43be9fac9d87dd216a6ea9e64099f6f05fbcd6e5a39ab239aad8c1e03d27a1378e4bcbf8937eac4300a");
int ret = curve_verify_signature(
pub_key,
(uint8_t*)message.data(), message.size(),
(uint8_t*)signature.data(), signature.size()
);
cout << "ret: " << ret << endl; // shows 1 (correct)
结果为 1,表示正确。请注意libsignal
要求pub_key
以字节 0x05(key-type)开头,CryptoPP
此处不适用。
使用的代码CryptoPP
:
string pub = str2hex("04f05568cc7a16fa9b4bc1c9d9294a80b7727e349365f855031a180bf0f80910");
string message = str2hex("05f1fd491d63f1860bdaf3f9b0eb46c2494b7f184a32d9e6c859a421ad284f4307");
string signature = str2hex("5e525df3360ea62281efe8fb9e183521105bb3d9ba8ad43be9fac9d87dd216a6ea9e64099f6f05fbcd6e5a39ab239aad8c1e03d27a1378e4bcbf8937eac4300a");
ed25519::Verifier verifier((uint8_t*)pub.data());
bool ret = verifier.VerifyMessage(
(uint8_t*)message.data(), message.size(),
(uint8_t*)signature.data(), signature.size()
);
cout << "ret: " << ret << endl; // shows 0 (wrong)
它显示0,代码有什么问题?