/// <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);
}
