我与创作从公钥的字符串表示ECDSA公共密钥的挣扎即创建ECDSA公钥给定曲线和公共点?
string devicePublicKey("86FB5EB3CA0507226BE7197058B9EC041D3A3758D9D9C91902ACA3391F4E58AEF13AFF63CC4EF68942B9B94904DC1B890EDBEABD16B992110624968E894E560E");
以前我发现,我不得不前缀“04”所以不知道这是需要使用此密钥这次?
我想产生它验证签名
string ecs04b2ExpSignature("0199E984CEC75DDCA7F1DDF6E53E2E67352A2BE38A4B66F8ED596606FAB983FF300CAA76DE88CED9D563A5C03E8F3A7C000780F3F2061C611E9AA0B18B460D77");
那里要签名的数据使用的是
string ecs04b2SigningData("020000000000000001FFFFFFFFFFFFFFFE123456789ABCDEF000B3DA2000000100000300000003030003000300");
我粗略代码现在看起来像这样
SecByteBlock message(convertHexStrToSecByteBlock(messageIn));
SecByteBlock signature(convertHexStrToSecByteBlock(signatureIn));
ECDSA<ECP, SHA256>::PublicKey publicKey;
string inPublicKey("04");
inPublicKey.append(pubKeyIn);
SecByteBlock pubKey = encryptBase::convertHexStrToSecByteBlock(inPublicKey);
ECP::Point p;
publicKey.AccessGroupParameters().Initialize(CryptoPP::ASN1::secp256r1());
publicKey.GetGroupParameters().GetCurve().DecodePoint(p, pubKey, publicKey.GetGroupParameters().GetCurve().EncodedPointSize(true));
publicKey.SetPublicElement(p);
//ByteQueue qt;
//qt.Put((byte*)exp.c_str(),(size_t)exp.size());
AutoSeededRandomPool prng;
bool result = publicKey.Validate(prng, 3);
if (result)
{
// Load public key (in ByteQueue, X509 format)
ECDSA<ECP, SHA256>::Verifier verifier(publicKey);
bool result = verifier.VerifyMessage(message.data(), messageIn.size(), signature.data(), signature.size());
if (result)
cout << "Verified signature on message" << endl;
else
cerr << "Failed to verify signature on message" << endl;
}
else
{
cout << "Failed to validate key" << endl;
}
这是切碎在一起,所以不会建立。任何帮助将是巨大的
PS我问有关私钥这里Creation of ECDSA private key given curve and private exponent?
这个作品完美!非常感谢您的帮助。我与cryptoPP wiki维基共同努力,因为似乎有一些内容出版。我使用的是http://www.cryptopp.com/wiki/Elliptic_Curve_Digital_Signature_Algorithm请注意我在上面的例子中更新了公钥(我的错误) – gizmo 2014-12-08 11:48:52