C#.NET 国密SM2 签名验签 与JAVA互通 ver:20230807

C#.NET 国密SM2 签名验签 与JAVA互通 ver:20230807

 

.NET 环境：.NET6 控制台程序(.net core)。

JAVA 环境：JAVA8（JDK8,JAVA 1.8），带maven 的JAVA控制台程序。

 

1.最好要到对方源码(DEMO+JAR包也可以)，可以用IDEA反编译（Ctrl+鼠标左键），看它过程逻辑和结果格式。

2.常说的SM2签名，指的就是“SM3withSM2”。类似于：SHA256withRSA，SHA1withRSA。

3.签名结果：有2种格式：r||s 和 asn1 ，双方得约定好。
SignSm3WithSm2 是RS，SignSm3WithSm2Asn1Rs 是 asn1，一种不行就换另一种调试。

4.签名结果传输，可以转BASE64字符串或16进制字符串，双方得约定好。

5.如果未指明 userId： 那默认值就是：1234567812345678。
string userId = "1234567812345678";

6.有的文档说是进行 sm3 hash 后进行 sm2 签名，我们以为是：
var rstA=sm3hash(dataString);
var rstB= SignSm3WithSm2(rstA);
但实际只有一步：
var rstB= SignSm3WithSm2(dataString);
文档描述和代码逻辑有出入的地方很多，所以得找对方要代码DEMO，Show me the code !

7.有的签名代码和BC库是不兼容的，得少量手动实现：https://www.cnblogs.com/runliuv/p/16486898.html。

注意：JAVA的 HUTOOL - sm2.sign 结果格式是 Asn1 的，我们得用 VerifySm3WithSm2Asn1Rs。

 

生成一组国密公私钥：

私钥：FAB8BBE670FAE338C9E9382B9FB6485225C11A3ECB84C938F10F20A93B6215F0

公钥：049EF573019D9A03B16B0BE44FC8A5B4E8E098F56034C97B312282DD0B4810AFC3CC759673ED0FC9B9DC7E6FA38F0E2B121E02654BF37EA6B63FAF2A0D6013EADF

.NET 代码：

GmUtil 工具类，需要nuget下载 Portable.BouncyCastle 1.9.0 版本：

using Org.BouncyCastle.Asn1; using Org.BouncyCastle.Asn1.GM; using Org.BouncyCastle.Asn1.X9; using Org.BouncyCastle.Crypto; using Org.BouncyCastle.Crypto.Digests; using Org.BouncyCastle.Crypto.Engines; using Org.BouncyCastle.Crypto.Generators; using Org.BouncyCastle.Crypto.Parameters; using Org.BouncyCastle.Math; using Org.BouncyCastle.Security; using Org.BouncyCastle.Utilities; using Org.BouncyCastle.Utilities.Encoders; using Org.BouncyCastle.X509; using System; using System.Collections.Generic; using System.IO;  namespace CommonUtils {     /**      * need lib:      * BouncyCastle.Crypto.dll（http://www.bouncycastle.org/csharp/index.html）              * 用BC的注意点：      * 这个版本的BC对SM3withSM2的结果为asn1格式的r和s，如果需要直接拼接的r||s需要自己转换。下面rsAsn1ToPlainByteArray、rsPlainByteArrayToAsn1就在干这事。      * 这个版本的BC对SM2的结果为C1||C2||C3，据说为旧标准，新标准为C1||C3||C2，用新标准的需要自己转换。下面（被注释掉的）changeC1C2C3ToC1C3C2、changeC1C3C2ToC1C2C3就在干这事。java版的高版本有加上C1C3C2，csharp版没准以后也会加，但目前还没有，java版的目前可以初始化时“ SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);”。      *       * 按要求国密算法仅允许使用加密机，本demo国密算法仅供学习使用，请不要用于生产用途。      */     public class GmUtil     {          //private static readonly ILog log = LogManager.GetLogger(typeof(GmUtil));          private static X9ECParameters x9ECParameters = GMNamedCurves.GetByName("sm2p256v1");         private static ECDomainParameters ecDomainParameters = new ECDomainParameters(x9ECParameters.Curve, x9ECParameters.G, x9ECParameters.N);          /**          *          * @param msg          * @param userId          * @param privateKey          * @return r||s，直接拼接byte数组的rs          */         public static byte[] SignSm3WithSm2(byte[] msg, byte[] userId, AsymmetricKeyParameter privateKey)         {             return RsAsn1ToPlainByteArray(SignSm3WithSm2Asn1Rs(msg, userId, privateKey));         }          /**           * @param msg           * @param userId           * @param privateKey           * @return rs in <b>asn1 format</b>           */         public static byte[] SignSm3WithSm2Asn1Rs(byte[] msg, byte[] userId, AsymmetricKeyParameter privateKey)         {             try             {                 ISigner signer = SignerUtilities.GetSigner("SM3withSM2");                 signer.Init(true, new ParametersWithID(privateKey, userId));                 signer.BlockUpdate(msg, 0, msg.Length);                 byte[] sig = signer.GenerateSignature();                 return sig;             }             catch (Exception e)             {                 //log.Error("SignSm3WithSm2Asn1Rs error: " + e.Message, e);                 return null;             }         }          /**         *         * @param msg         * @param userId         * @param rs r||s，直接拼接byte数组的rs         * @param publicKey         * @return         */         public static bool VerifySm3WithSm2(byte[] msg, byte[] userId, byte[] rs, AsymmetricKeyParameter publicKey)         {             if (rs == null || msg == null || userId == null) return false;             if (rs.Length != RS_LEN * 2) return false;             return VerifySm3WithSm2Asn1Rs(msg, userId, RsPlainByteArrayToAsn1(rs), publicKey);         }          /**          *          * @param msg          * @param userId          * @param rs in <b>asn1 format</b>          * @param publicKey          * @return          */          public static bool VerifySm3WithSm2Asn1Rs(byte[] msg, byte[] userId, byte[] sign, AsymmetricKeyParameter publicKey)         {             try             {                 ISigner signer = SignerUtilities.GetSigner("SM3withSM2");                 signer.Init(false, new ParametersWithID(publicKey, userId));                 signer.BlockUpdate(msg, 0, msg.Length);                 return signer.VerifySignature(sign);             }             catch (Exception e)             {                 //log.Error("VerifySm3WithSm2Asn1Rs error: " + e.Message, e);                 return false;             }         }          /**          * bc加解密使用旧标c1||c2||c3，此方法在加密后调用，将结果转化为c1||c3||c2          * @param c1c2c3          * @return          */         private static byte[] ChangeC1C2C3ToC1C3C2(byte[] c1c2c3)         {             int c1Len = (x9ECParameters.Curve.FieldSize + 7) / 8 * 2 + 1; //sm2p256v1的这个固定65。可看GMNamedCurves、ECCurve代码。             const int c3Len = 32; //new SM3Digest().getDigestSize();             byte[] result = new byte[c1c2c3.Length];             Buffer.BlockCopy(c1c2c3, 0, result, 0, c1Len); //c1             Buffer.BlockCopy(c1c2c3, c1c2c3.Length - c3Len, result, c1Len, c3Len); //c3             Buffer.BlockCopy(c1c2c3, c1Len, result, c1Len + c3Len, c1c2c3.Length - c1Len - c3Len); //c2             return result;         }           /**          * bc加解密使用旧标c1||c3||c2，此方法在解密前调用，将密文转化为c1||c2||c3再去解密          * @param c1c3c2          * @return          */         private static byte[] ChangeC1C3C2ToC1C2C3(byte[] c1c3c2)         {             int c1Len = (x9ECParameters.Curve.FieldSize + 7) / 8 * 2 + 1; //sm2p256v1的这个固定65。可看GMNamedCurves、ECCurve代码。             const int c3Len = 32; //new SM3Digest().GetDigestSize();             byte[] result = new byte[c1c3c2.Length];             Buffer.BlockCopy(c1c3c2, 0, result, 0, c1Len); //c1: 0->65             Buffer.BlockCopy(c1c3c2, c1Len + c3Len, result, c1Len, c1c3c2.Length - c1Len - c3Len); //c2             Buffer.BlockCopy(c1c3c2, c1Len, result, c1c3c2.Length - c3Len, c3Len); //c3             return result;         }          /**          * c1||c3||c2          * @param data          * @param key          * @return          */         public static byte[] Sm2Decrypt(byte[] data, AsymmetricKeyParameter key)         {             return Sm2DecryptOld(ChangeC1C3C2ToC1C2C3(data), key);         }          /**          * c1||c3||c2          * @param data          * @param key          * @return          */          public static byte[] Sm2Encrypt(byte[] data, AsymmetricKeyParameter key)         {             return ChangeC1C2C3ToC1C3C2(Sm2EncryptOld(data, key));         }          /**          * c1||c2||c3          * @param data          * @param key          * @return          */         public static byte[] Sm2EncryptOld(byte[] data, AsymmetricKeyParameter pubkey)         {             try             {                 SM2Engine sm2Engine = new SM2Engine();                 sm2Engine.Init(true, new ParametersWithRandom(pubkey, new SecureRandom()));                 return sm2Engine.ProcessBlock(data, 0, data.Length);             }             catch (Exception e)             {                 //log.Error("Sm2EncryptOld error: " + e.Message, e);                 return null;             }         }          /**          * c1||c2||c3          * @param data          * @param key          * @return          */         public static byte[] Sm2DecryptOld(byte[] data, AsymmetricKeyParameter key)         {             try             {                 SM2Engine sm2Engine = new SM2Engine();                 sm2Engine.Init(false, key);                 return sm2Engine.ProcessBlock(data, 0, data.Length);             }             catch (Exception e)             {                 //log.Error("Sm2DecryptOld error: " + e.Message, e);                 return null;             }         }          /**          * @param bytes          * @return          */         public static byte[] Sm3(byte[] bytes)         {             try             {                 SM3Digest digest = new SM3Digest();                 digest.BlockUpdate(bytes, 0, bytes.Length);                 byte[] result = DigestUtilities.DoFinal(digest);                 return result;             }             catch (Exception e)             {                 //log.Error("Sm3 error: " + e.Message, e);                 return null;             }         }          private const int RS_LEN = 32;          private static byte[] BigIntToFixexLengthBytes(BigInteger rOrS)         {             // for sm2p256v1, n is 00fffffffeffffffffffffffffffffffff7203df6b21c6052b53bbf40939d54123,             // r and s are the result of mod n, so they should be less than n and have length<=32             byte[] rs = rOrS.ToByteArray();             if (rs.Length == RS_LEN) return rs;             else if (rs.Length == RS_LEN + 1 && rs[0] == 0) return Arrays.CopyOfRange(rs, 1, RS_LEN + 1);             else if (rs.Length < RS_LEN)             {                 byte[] result = new byte[RS_LEN];                 Arrays.Fill(result, (byte)0);                 Buffer.BlockCopy(rs, 0, result, RS_LEN - rs.Length, rs.Length);                 return result;             }             else             {                 throw new ArgumentException("err rs: " + Hex.ToHexString(rs));             }         }          /**          * BC的SM3withSM2签名得到的结果的rs是asn1格式的，这个方法转化成直接拼接r||s          * @param rsDer rs in asn1 format          * @return sign result in plain byte array          */         private static byte[] RsAsn1ToPlainByteArray(byte[] rsDer)         {             Asn1Sequence seq = Asn1Sequence.GetInstance(rsDer);             byte[] r = BigIntToFixexLengthBytes(DerInteger.GetInstance(seq[0]).Value);             byte[] s = BigIntToFixexLengthBytes(DerInteger.GetInstance(seq[1]).Value);             byte[] result = new byte[RS_LEN * 2];             Buffer.BlockCopy(r, 0, result, 0, r.Length);             Buffer.BlockCopy(s, 0, result, RS_LEN, s.Length);             return result;         }          /**          * BC的SM3withSM2验签需要的rs是asn1格式的，这个方法将直接拼接r||s的字节数组转化成asn1格式          * @param sign in plain byte array          * @return rs result in asn1 format          */         private static byte[] RsPlainByteArrayToAsn1(byte[] sign)         {             if (sign.Length != RS_LEN * 2) throw new ArgumentException("err rs. ");             BigInteger r = new BigInteger(1, Arrays.CopyOfRange(sign, 0, RS_LEN));             BigInteger s = new BigInteger(1, Arrays.CopyOfRange(sign, RS_LEN, RS_LEN * 2));             Asn1EncodableVector v = new Asn1EncodableVector();             v.Add(new DerInteger(r));             v.Add(new DerInteger(s));             try             {                 return new DerSequence(v).GetEncoded("DER");             }             catch (IOException e)             {                 //log.Error("RsPlainByteArrayToAsn1 error: " + e.Message, e);                 return null;             }         }          public static AsymmetricCipherKeyPair GenerateKeyPair()         {             try             {                 ECKeyPairGenerator kpGen = new ECKeyPairGenerator();                 kpGen.Init(new ECKeyGenerationParameters(ecDomainParameters, new SecureRandom()));                 return kpGen.GenerateKeyPair();             }             catch (Exception e)             {                 //log.Error("generateKeyPair error: " + e.Message, e);                 return null;             }         }          public static ECPrivateKeyParameters GetPrivatekeyFromD(BigInteger d)         {             return new ECPrivateKeyParameters(d, ecDomainParameters);         }          public static ECPublicKeyParameters GetPublickeyFromXY(BigInteger x, BigInteger y)         {             return new ECPublicKeyParameters(x9ECParameters.Curve.CreatePoint(x, y), ecDomainParameters);         }          public static AsymmetricKeyParameter GetPublickeyFromX509File(FileInfo file)         {              FileStream fileStream = null;             try             {                 //file.DirectoryName + "\" + file.Name                 fileStream = new FileStream(file.FullName, FileMode.Open, FileAccess.Read);                 X509Certificate certificate = new X509CertificateParser().ReadCertificate(fileStream);                 return certificate.GetPublicKey();             }             catch (Exception e)             {                 //log.Error(file.Name + "读取失败，异常：" + e);             }             finally             {                 if (fileStream != null)                     fileStream.Close();             }             return null;         }          public class Sm2Cert         {             public AsymmetricKeyParameter privateKey;             public AsymmetricKeyParameter publicKey;             public String certId;         }          private static byte[] ToByteArray(int i)         {             byte[] byteArray = new byte[4];             byteArray[0] = (byte)(i >> 24);             byteArray[1] = (byte)((i & 0xFFFFFF) >> 16);             byteArray[2] = (byte)((i & 0xFFFF) >> 8);             byteArray[3] = (byte)(i & 0xFF);             return byteArray;         }          /**          * 字节数组拼接          *          * @param params          * @return          */         private static byte[] Join(params byte[][] byteArrays)         {             List<byte> byteSource = new List<byte>();             for (int i = 0; i < byteArrays.Length; i++)             {                 byteSource.AddRange(byteArrays[i]);             }             byte[] data = byteSource.ToArray();             return data;         }          /**          * 密钥派生函数          *          * @param Z          * @param klen          *            生成klen字节数长度的密钥          * @return          */         private static byte[] KDF(byte[] Z, int klen)         {             int ct = 1;             int end = (int)Math.Ceiling(klen * 1.0 / 32);             List<byte> byteSource = new List<byte>();             try             {                 for (int i = 1; i < end; i++)                 {                     byteSource.AddRange(GmUtil.Sm3(Join(Z, ToByteArray(ct))));                     ct++;                 }                 byte[] last = GmUtil.Sm3(Join(Z, ToByteArray(ct)));                 if (klen % 32 == 0)                 {                     byteSource.AddRange(last);                 }                 else                     byteSource.AddRange(Arrays.CopyOfRange(last, 0, klen % 32));                 return byteSource.ToArray();             }             catch (Exception e)             {                 //log.Error("KDF error: " + e.Message, e);             }             return null;         }          public static byte[] Sm4DecryptCBC(byte[] keyBytes, byte[] cipher, byte[] iv, String algo)         {             if (keyBytes.Length != 16) throw new ArgumentException("err key length");             if (cipher.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");              try             {                 KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);                 IBufferedCipher c = CipherUtilities.GetCipher(algo);                 if (iv == null) iv = ZeroIv(algo);                 c.Init(false, new ParametersWithIV(key, iv));                 return c.DoFinal(cipher);             }             catch (Exception e)             {                 //log.Error("Sm4DecryptCBC error: " + e.Message, e);                 return null;             }         }           public static byte[] Sm4EncryptCBC(byte[] keyBytes, byte[] plain, byte[] iv, String algo)         {             if (keyBytes.Length != 16) throw new ArgumentException("err key length");             if (plain.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");              try             {                 KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);                 IBufferedCipher c = CipherUtilities.GetCipher(algo);                 if (iv == null) iv = ZeroIv(algo);                 c.Init(true, new ParametersWithIV(key, iv));                 return c.DoFinal(plain);             }             catch (Exception e)             {                 //log.Error("Sm4EncryptCBC error: " + e.Message, e);                 return null;             }         }           public static byte[] Sm4EncryptECB(byte[] keyBytes, byte[] plain, string algo)         {             if (keyBytes.Length != 16) throw new ArgumentException("err key length");             //NoPadding 的情况下需要校验数据长度是16的倍数.             if (plain.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");              try             {                 KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);                 IBufferedCipher c = CipherUtilities.GetCipher(algo);                 c.Init(true, key);                 return c.DoFinal(plain);             }             catch (Exception e)             {                 //log.Error("Sm4EncryptECB error: " + e.Message, e);                 return null;             }         }          public static byte[] Sm4DecryptECB(byte[] keyBytes, byte[] cipher, string algo)         {             if (keyBytes.Length != 16) throw new ArgumentException("err key length");             if (cipher.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");              try             {                 KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);                 IBufferedCipher c = CipherUtilities.GetCipher(algo);                 c.Init(false, key);                 return c.DoFinal(cipher);             }             catch (Exception e)             {                 //log.Error("Sm4DecryptECB error: " + e.Message, e);                 return null;             }         }          public const String SM4_ECB_NOPADDING = "SM4/ECB/NoPadding";         public const String SM4_CBC_NOPADDING = "SM4/CBC/NoPadding";         public const String SM4_CBC_PKCS7PADDING = "SM4/CBC/PKCS7Padding";          /**          * cfca官网CSP沙箱导出的sm2文件          * @param pem 二进制原文          * @param pwd 密码          * @return          */         public static Sm2Cert readSm2File(byte[] pem, String pwd)         {              Sm2Cert sm2Cert = new Sm2Cert();             try             {                 Asn1Sequence asn1Sequence = (Asn1Sequence)Asn1Object.FromByteArray(pem);                 //            ASN1Integer asn1Integer = (ASN1Integer) asn1Sequence.getObjectAt(0); //version=1                 Asn1Sequence priSeq = (Asn1Sequence)asn1Sequence[1];//private key                 Asn1Sequence pubSeq = (Asn1Sequence)asn1Sequence[2];//public key and x509 cert                  //            ASN1ObjectIdentifier sm2DataOid = (ASN1ObjectIdentifier) priSeq.getObjectAt(0);                 //            ASN1ObjectIdentifier sm4AlgOid = (ASN1ObjectIdentifier) priSeq.getObjectAt(1);                 Asn1OctetString priKeyAsn1 = (Asn1OctetString)priSeq[2];                 byte[] key = KDF(System.Text.Encoding.UTF8.GetBytes(pwd), 32);                 byte[] priKeyD = Sm4DecryptCBC(Arrays.CopyOfRange(key, 16, 32),                         priKeyAsn1.GetOctets(),                         Arrays.CopyOfRange(key, 0, 16), SM4_CBC_PKCS7PADDING);                 sm2Cert.privateKey = GetPrivatekeyFromD(new BigInteger(1, priKeyD));                 //            log.Info(Hex.toHexString(priKeyD));                  //            ASN1ObjectIdentifier sm2DataOidPub = (ASN1ObjectIdentifier) pubSeq.getObjectAt(0);                 Asn1OctetString pubKeyX509 = (Asn1OctetString)pubSeq[1];                 X509Certificate x509 = (X509Certificate)new X509CertificateParser().ReadCertificate(pubKeyX509.GetOctets());                 sm2Cert.publicKey = x509.GetPublicKey();                 sm2Cert.certId = x509.SerialNumber.ToString(10); //这里转10进账，有啥其他进制要求的自己改改                 return sm2Cert;             }             catch (Exception e)             {                 //log.Error("readSm2File error: " + e.Message, e);                 return null;             }         }          /**          *          * @param cert          * @return          */         public static Sm2Cert ReadSm2X509Cert(byte[] cert)         {             Sm2Cert sm2Cert = new Sm2Cert();             try             {                  X509Certificate x509 = new X509CertificateParser().ReadCertificate(cert);                 sm2Cert.publicKey = x509.GetPublicKey();                 sm2Cert.certId = x509.SerialNumber.ToString(10); //这里转10进账，有啥其他进制要求的自己改改                 return sm2Cert;             }             catch (Exception e)             {                 //log.Error("ReadSm2X509Cert error: " + e.Message, e);                 return null;             }         }          public static byte[] ZeroIv(String algo)         {              try             {                 IBufferedCipher cipher = CipherUtilities.GetCipher(algo);                 int blockSize = cipher.GetBlockSize();                 byte[] iv = new byte[blockSize];                 Arrays.Fill(iv, (byte)0);                 return iv;             }             catch (Exception e)             {                 //log.Error("ZeroIv error: " + e.Message, e);                 return null;             }         }          public static void Main2(string[] s)         {              // 随便看看             //log.Info("GMNamedCurves: ");             foreach (string e in GMNamedCurves.Names)             {                 //log.Info(e);             }             //log.Info("sm2p256v1 n:" + x9ECParameters.N);             //log.Info("sm2p256v1 nHex:" + Hex.ToHexString(x9ECParameters.N.ToByteArray()));              // 生成公私钥对 ---------------------             AsymmetricCipherKeyPair kp = GmUtil.GenerateKeyPair();             //log.Info("private key d: " + ((ECPrivateKeyParameters)kp.Private).D);             //log.Info("public key q:" + ((ECPublicKeyParameters)kp.Public).Q); //{x, y, zs...}              //签名验签             byte[] msg = System.Text.Encoding.UTF8.GetBytes("message digest");             byte[] userId = System.Text.Encoding.UTF8.GetBytes("userId");             byte[] sig = SignSm3WithSm2(msg, userId, kp.Private);             //log.Info("testSignSm3WithSm2: " + Hex.ToHexString(sig));             //log.Info("testVerifySm3WithSm2: " + VerifySm3WithSm2(msg, userId, sig, kp.Public));              // 由d生成私钥 ---------------------             BigInteger d = new BigInteger("097b5230ef27c7df0fa768289d13ad4e8a96266f0fcb8de40d5942af4293a54a", 16);             ECPrivateKeyParameters bcecPrivateKey = GetPrivatekeyFromD(d);             //log.Info("testGetFromD: " + bcecPrivateKey.D.ToString(16));              //公钥X坐标PublicKeyXHex: 59cf9940ea0809a97b1cbffbb3e9d96d0fe842c1335418280bfc51dd4e08a5d4             //公钥Y坐标PublicKeyYHex: 9a7f77c578644050e09a9adc4245d1e6eba97554bc8ffd4fe15a78f37f891ff8             AsymmetricKeyParameter publicKey = GetPublickeyFromX509File(new FileInfo("d:/certs/69629141652.cer"));             //log.Info(publicKey);             AsymmetricKeyParameter publicKey1 = GetPublickeyFromXY(new BigInteger("59cf9940ea0809a97b1cbffbb3e9d96d0fe842c1335418280bfc51dd4e08a5d4", 16), new BigInteger("9a7f77c578644050e09a9adc4245d1e6eba97554bc8ffd4fe15a78f37f891ff8", 16));             //log.Info("testReadFromX509File: " + ((ECPublicKeyParameters)publicKey).Q);             //log.Info("testGetFromXY: " + ((ECPublicKeyParameters)publicKey1).Q);             //log.Info("testPubKey: " + publicKey.Equals(publicKey1));             //log.Info("testPubKey: " + ((ECPublicKeyParameters)publicKey).Q.Equals(((ECPublicKeyParameters)publicKey1).Q));              // sm2 encrypt and decrypt test ---------------------             AsymmetricCipherKeyPair kp2 = GenerateKeyPair();             AsymmetricKeyParameter publicKey2 = kp2.Public;             AsymmetricKeyParameter privateKey2 = kp2.Private;             byte[] bs = Sm2Encrypt(System.Text.Encoding.UTF8.GetBytes("s"), publicKey2);             //log.Info("testSm2Enc dec: " + Hex.ToHexString(bs));             bs = Sm2Decrypt(bs, privateKey2);             //log.Info("testSm2Enc dec: " + System.Text.Encoding.UTF8.GetString(bs));              // sm4 encrypt and decrypt test ---------------------             //0123456789abcdeffedcba9876543210 + 0123456789abcdeffedcba9876543210 -> 681edf34d206965e86b3e94f536e4246             byte[] plain = Hex.Decode("0123456789abcdeffedcba98765432100123456789abcdeffedcba98765432100123456789abcdeffedcba9876543210");             byte[] key = Hex.Decode("0123456789abcdeffedcba9876543210");             byte[] cipher = Hex.Decode("595298c7c6fd271f0402f804c33d3f66");             bs = Sm4EncryptECB(key, plain, GmUtil.SM4_ECB_NOPADDING);             //log.Info("testSm4EncEcb: " + Hex.ToHexString(bs)); ;             bs = Sm4DecryptECB(key, bs, GmUtil.SM4_ECB_NOPADDING);             //log.Info("testSm4DecEcb: " + Hex.ToHexString(bs));              //读.sm2文件             String sm2 = "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";             bs = Convert.FromBase64String(sm2);             String pwd = "cfca1234";             GmUtil.Sm2Cert sm2Cert = GmUtil.readSm2File(bs, pwd);             //log.Info("testReadSm2File, pubkey: " + ((ECPublicKeyParameters)sm2Cert.publicKey).Q.ToString());             //log.Info("testReadSm2File, prikey: " + Hex.ToHexString(((ECPrivateKeyParameters)sm2Cert.privateKey).D.ToByteArray()));             //log.Info("testReadSm2File, certId: " + sm2Cert.certId);              bs = Sm2Encrypt(System.Text.Encoding.UTF8.GetBytes("s"), ((ECPublicKeyParameters)sm2Cert.publicKey));             //log.Info("testSm2Enc dec: " + Hex.ToHexString(bs));             bs = Sm2Decrypt(bs, ((ECPrivateKeyParameters)sm2Cert.privateKey));             //log.Info("testSm2Enc dec: " + System.Text.Encoding.UTF8.GetString(bs));              msg = System.Text.Encoding.UTF8.GetBytes("message digest");             userId = System.Text.Encoding.UTF8.GetBytes("userId");             sig = SignSm3WithSm2(msg, userId, ((ECPrivateKeyParameters)sm2Cert.privateKey));             //log.Info("testSignSm3WithSm2: " + Hex.ToHexString(sig));             //log.Info("testVerifySm3WithSm2: " + VerifySm3WithSm2(msg, userId, sig, ((ECPublicKeyParameters)sm2Cert.publicKey)));         }      } }

.NET使用：

using CommonUtils; using Org.BouncyCastle.Crypto; using Org.BouncyCastle.Math; using Org.BouncyCastle.Utilities.Encoders; using System.Text;   void TestSM2Sign() {     string userId = "1234567812345678";     byte[] byUserId = Encoding.UTF8.GetBytes(userId);     String privateKeyHex = "FAB8BBE670FAE338C9E9382B9FB6485225C11A3ECB84C938F10F20A93B6215F0";     string pubKeyHex = "049EF573019D9A03B16B0BE44FC8A5B4E8E098F56034C97B312282DD0B4810AFC3CC759673ED0FC9B9DC7E6FA38F0E2B121E02654BF37EA6B63FAF2A0D6013EADF";     //如果是130位公钥，.NET 使用的话，把开头的04截取掉。     if (pubKeyHex.Length == 130)     {         pubKeyHex = pubKeyHex.Substring(2, 128);     }     //公钥X，前64位     String x = pubKeyHex.Substring(0, 64);     //公钥Y，后64位     String y = pubKeyHex.Substring(64);     //获取公钥对象     AsymmetricKeyParameter publicKey1 = GmUtil.GetPublickeyFromXY(new BigInteger(x, 16), new BigInteger(y, 16));     BigInteger d = new BigInteger(privateKeyHex, 16);     //获取私钥对象，用ECPrivateKeyParameters 或 AsymmetricKeyParameter 都可以     //ECPrivateKeyParameters bcecPrivateKey = CommonUtils.GmUtil.GetPrivatekeyFromD(d);     AsymmetricKeyParameter bcecPrivateKey = CommonUtils.GmUtil.GetPrivatekeyFromD(d);      String content = "1234泰酷拉NET";     Console.WriteLine("待处理字符串：" + content);     //SignSm3WithSm2 是RS，SignSm3WithSm2Asn1Rs 是 asn1     byte[] digestByte = GmUtil.SignSm3WithSm2(Encoding.UTF8.GetBytes(content), byUserId, bcecPrivateKey);     string strSM2 = Convert.ToBase64String(digestByte);     Console.WriteLine("SM2加签后：" + strSM2);      //.NET 验签         byte[] byToProc = Convert.FromBase64String(strSM2);     //顺序：报文，userId，签名值，公钥。     bool verifySign = GmUtil.VerifySm3WithSm2(Encoding.UTF8.GetBytes(content), byUserId, byToProc, publicKey1);      Console.WriteLine("SM2 验签：" + verifySign.ToString());      //JAVA 签名 .NET验签     string javaContent = "1234泰酷拉JJ"; //注意：报文要和JAVA一致     Console.WriteLine("javaContent：" + javaContent);     string javaSM2 = "MEUCIF5PXxIlF0NmQaUtfIGLbZm4JuYT4bkYyoFMA/eIqVaUAiEAkRT3GkrtY2YtUSF9Ya0jOLRMcMUuHNLiWPTy591vnco=";      Console.WriteLine("javaSM2签名结果：" + javaSM2);     byToProc = Convert.FromBase64String(javaSM2);     //注意：JAVA HUTOOL - sm2.sign 结果格式是 asn1 的，我们得用 VerifySm3WithSm2Asn1Rs。     verifySign = GmUtil.VerifySm3WithSm2Asn1Rs(Encoding.UTF8.GetBytes(javaContent), byUserId, byToProc, publicKey1);      Console.WriteLine("JAVA SM2 验签：" + verifySign.ToString()); }

 

java代码：

maven 引用 ：

<dependency>       <groupId>cn.hutool</groupId>       <artifactId>hutool-all</artifactId>       <version>5.8.1</version>     </dependency>      <dependency>       <groupId>org.bouncycastle</groupId>       <artifactId>bcprov-jdk15on</artifactId>       <version>1.70</version>     </dependency>

JAVA调用：

package org.example;  import cn.hutool.crypto.SmUtil; import cn.hutool.crypto.asymmetric.KeyType; import cn.hutool.crypto.asymmetric.SM2; import org.bouncycastle.crypto.engines.SM2Engine; import org.bouncycastle.util.encoders.Hex; import java.util.Base64;       static void testSM2Sign() {          String content = "1234泰酷拉JJ";         System.out.println("待处理字符串：" + content);         String userId = "1234567812345678";         byte[] byUserId = userId.getBytes();          //私钥         String privateKeyHex = "FAB8BBE670FAE338C9E9382B9FB6485225C11A3ECB84C938F10F20A93B6215F0";         //公钥X         String x = "9EF573019D9A03B16B0BE44FC8A5B4E8E098F56034C97B312282DD0B4810AFC3";         //公钥Y         String y = "CC759673ED0FC9B9DC7E6FA38F0E2B121E02654BF37EA6B63FAF2A0D6013EADF";         //构造函数里，私钥或公钥，其中一方可为空 null         SM2 sm2 = new SM2(privateKeyHex, x, y);         byte[] byRst = sm2.sign(content.getBytes(), byUserId);         String sm2Sign = Base64.getEncoder().encodeToString(byRst);         System.out.println("sm2 BASE64 签名:" + sm2Sign);          byte[] bySign = Base64.getDecoder().decode(sm2Sign);         boolean verifySign = sm2.verify(content.getBytes(), bySign, byUserId);          System.out.println("SM2 验签：" + verifySign);     }

 

end