/// <summary>
/// 使用私钥进行签名
/// </summary>
/// <param name="macdata">签名原串</param>
/// <param name="privateKey">私钥</param>
/// <returns></returns>
public static byte[] Sign(byte[] macdata, AsymmetricKeyParameter privateKey)
{
Org.BouncyCastle.Crypto.Signers.SM2Signer signer = new Org.BouncyCastle.Crypto.Signers.SM2Signer();
signer.Init(true, privateKey);
signer.BlockUpdate(macdata, 0, macdata.Length);
byte[] sign = signer.GenerateSignature();
return(sign);
Asn1Sequence sequence = Asn1Sequence.GetInstance(sign);
DerInteger r = (DerInteger)sequence[0];
DerInteger s = (DerInteger)sequence[1];
BigInteger[] bigs = new BigInteger[] { r.Value, s.Value };
byte[] bs;
using (MemoryStream ms = new MemoryStream())
{
DerSequenceGenerator seq = new DerSequenceGenerator(ms);
seq.AddObject(new DerInteger(bigs[0]));
seq.AddObject(new DerInteger(bigs[1]));
seq.Close();
bs = ms.ToArray();
}
return(bs);
}
/// <summary>
/// 使用公钥对待验签数据进行验签
/// </summary>
/// <param name="data">参与验签字符</param>
/// <param name="signature">要验签的签名串</param>
/// <param name="pkInfo">公钥信息</param>
/// <returns>返回验签结果</returns>
public static bool VerifyData(byte[] data, byte[] signature, AsymmetricKeyParameter pkInfo)
{
Org.BouncyCastle.Crypto.Signers.SM2Signer signer = new Org.BouncyCastle.Crypto.Signers.SM2Signer();
signer.Init(false, pkInfo);
signer.BlockUpdate(data, 0, data.Length);
return(signer.VerifySignature(signature));
}