C#.NET 國密SM3withSM2簽名與驗籤 和JAVA互通

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的注意點：

     * 這個版本的BC對SM3withSM2的結果為asn1格式的r和s，如果需要直接拼接的r||s需要自己轉換。下面rsAsn1ToPlainByteArray、rsPlainByteArrayToAsn1就在幹這事。

     * 這個版本的BC對SM2的結果為C1||C2||C3，據說為舊標準，新標準為C1||C3||C2，用新標準的需要自己轉換。下面（被註釋掉的）changeC1C2C3ToC1C3C2、changeC1C3C2ToC1C2C3就在幹這事。java版的高版本有加上C1C3C2，csharp版沒準以後也會加，但目前還沒有，java版的目前可以初始化時“ SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);”。

     *

     * 按要求國密演算法僅允許使用加密機，本demo國密演算法僅供學習使用，請不要用於生產用途。

     */

    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陣列的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陣列的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加解密使用舊標c1||c2||c3，此方法在加密後呼叫，將結果轉化為c1||c3||c2

         * @param c1c2c3

         * @return

         */

        private static byte[] ChangeC1C2C3ToC1C3C2(byte[] c1c2c3)

        {

            int c1Len = (x9ECParameters.Curve.FieldSize + 7) / 8 * 2 + 1; //sm2p256v1的這個固定65。可看GMNamedCurves、ECCurve程式碼。

            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加解密使用舊標c1||c3||c2，此方法在解密前呼叫，將密文轉化為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的這個固定65。可看GMNamedCurves、ECCurve程式碼。

            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簽名得到的結果的rs是asn1格式的，這個方法轉化成直接拼接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驗籤需要的rs是asn1格式的，這個方法將直接拼接r||s的位元組陣列轉化成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 + "讀取失敗，異常：" + 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;

        }

        /**

         * 位元組陣列拼接

         *

         * @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;

        }

        /**

         * 金鑰派生函式

         *

         * @param Z

         * @param klen

         *            生成klen位元組數長度的金鑰

         * @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) 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) 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");

            if (plain.Length % 16 != 0) 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) 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官網CSP沙箱匯出的sm2檔案

         * @param pem 二進位制原文

         * @param pwd 密碼

         * @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); //這裡轉10進賬，有啥其他進位制要求的自己改改

                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); //這裡轉10進賬，有啥其他進位制要求的自己改改

                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)

        {

            // 隨便看看

            //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()));

            // 生成公私鑰對 ---------------------

            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...}

            //簽名驗籤

            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生成私鑰 ---------------------

            BigInteger d = new BigInteger("097b5230ef27c7df0fa768289d13ad4e8a96266f0fcb8de40d5942af4293a54a", 16);

            ECPrivateKeyParameters bcecPrivateKey = GetPrivatekeyFromD(d);

            //log.Info("testGetFromD: " + bcecPrivateKey.D.ToString(16));

            //公鑰X座標PublicKeyXHex: 59cf9940ea0809a97b1cbffbb3e9d96d0fe842c1335418280bfc51dd4e08a5d4

            //公鑰Y座標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));

            //讀.sm2檔案

            String sm2 = "MIIDHQIBATBHBgoqgRzPVQYBBAIBBgcqgRzPVQFoBDDW5/I9kZhObxXE9Vh1CzHdZhIhxn+3byBU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\nVfY6";

            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)));

        }

    }

}

//簽名

        private void btnSign_Click(object sender, EventArgs e)

        {

            try

            {

                if (string.IsNullOrWhiteSpace(txtPrivateKey.Text) || string.IsNullOrWhiteSpace(txtUserId.Text) || string.IsNullOrWhiteSpace(txtToSignStr.Text))

                {

                    MessageBox.Show("私鑰,USERID,簽名字串不能為空。");

                    return;

                }

                // 由d生成私鑰 ---------------------

                BigInteger d = new BigInteger(txtPrivateKey.Text, 16);

                ECPrivateKeyParameters bcecPrivateKey = CommonUtils.GmUtil.GetPrivatekeyFromD(d);

                byte[] userId = Encoding.UTF8.GetBytes(txtUserId.Text);

                byte[] msg = System.Text.Encoding.UTF8.GetBytes(txtToSignStr.Text);

                byte[] sig = GmUtil.SignSm3WithSm2(msg, userId, bcecPrivateKey);

                //byte[] bytTmp = Hex.Decode(txtSign.Text);

                txtSign.Text = Convert.ToBase64String(sig);

                string sign16 = Hex.ToHexString(sig);

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        //驗籤

        private void button1_Click(object sender, EventArgs e)

        {

            try

            {

                if (string.IsNullOrWhiteSpace(txtPubKey.Text) || string.IsNullOrWhiteSpace(txtUserId.Text) || string.IsNullOrWhiteSpace(txtToSignStr.Text)

                    || string.IsNullOrWhiteSpace(txtSign.Text))

                {

                    MessageBox.Show("公鑰,USERID,簽名字串，簽名值不能為空。");

                    return;

                }

                //公鑰128位，拆成2個64位。

                string pa = txtPubKey.Text.Substring(0, 64);

                string pb = txtPubKey.Text.Substring(64, 64);

                AsymmetricKeyParameter publicKey1 = GmUtil.GetPublickeyFromXY(new BigInteger(pa, 16), new BigInteger(pb, 16));

                byte[] userId = Encoding.UTF8.GetBytes(txtUserId.Text);

                byte[] msg = System.Text.Encoding.UTF8.GetBytes(txtToSignStr.Text);

                //byte[] bytSig = Hex.Decode(txtSign.Text);

                byte[] bytSig = Convert.FromBase64String(txtSign.Text);

                bool bRst = GmUtil.VerifySm3WithSm2(msg, userId, bytSig, publicKey1);

                if (bRst)

                {

                    lblValidRst.Text = "驗證：通過 "+DateTime.Now.ToString();

                }

                else

                {

                    lblValidRst.Text = "驗證：不通過 " + DateTime.Now.ToString();

                }

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

package org.lw;

//import lombok.extern.slf4j.Slf4j;

import org.apache.commons.codec.binary.Base64;

import org.bouncycastle.asn1.ASN1EncodableVector;

import org.bouncycastle.asn1.ASN1Integer;

import org.bouncycastle.asn1.ASN1Sequence;

import org.bouncycastle.asn1.DERSequence;

import org.bouncycastle.asn1.gm.GMNamedCurves;

import org.bouncycastle.asn1.x9.X9ECParameters;

import org.bouncycastle.crypto.digests.SM3Digest;

import org.bouncycastle.crypto.params.ECDomainParameters;

import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey;

import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey;

import org.bouncycastle.jcajce.spec.SM2ParameterSpec;

import org.bouncycastle.jce.provider.BouncyCastleProvider;

import org.bouncycastle.jce.spec.ECParameterSpec;

import org.bouncycastle.jce.spec.ECPrivateKeySpec;

import org.bouncycastle.jce.spec.ECPublicKeySpec;

import org.bouncycastle.math.ec.ECPoint;

import org.bouncycastle.util.encoders.Hex;

//import org.junit.Test;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.math.BigInteger;

import java.security.*;

import java.security.spec.ECGenParameterSpec;

import java.util.Arrays;

//@Slf4j

public class SmUtil {

    private final static int RS_LEN = 32;

    private static X9ECParameters x9ECParameters = GMNamedCurves.getByName("sm2p256v1");

    private static ECDomainParameters ecDomainParameters = new ECDomainParameters(x9ECParameters.getCurve(), x9ECParameters.getG(), x9ECParameters.getN());

    private static ECParameterSpec ecParameterSpec = new ECParameterSpec(x9ECParameters.getCurve(), x9ECParameters.getG(), x9ECParameters.getN());

    static {

        if (Security.getProvider("BC") == null) {

            Security.addProvider(new BouncyCastleProvider());

        }

    }

    /**

     * 生成sm3摘要

     *

     * @param src

     * @return

     * @throws UnsupportedEncodingException

     */

    public static String generateSM3HASH(String src) throws UnsupportedEncodingException {

        byte[] md = new byte[32];

        byte[] msg1 = src.getBytes("utf-8");

        SM3Digest sm3 = new SM3Digest();

        sm3.update(msg1, 0, msg1.length);

        sm3.doFinal(md, 0);

        String s = new String(Hex.encode(md)).toUpperCase();

//        log.debug("SM3摘要：{}", s);

        return s;

    }

    public static String signSm3WithSm2(String msg, String userId, String privateKey) throws Exception {

        BCECPrivateKey bcecPrivateKey = getPrivatekeyFromD(privateKey);

        String sign = Base64.encodeBase64String(signSm3WithSm2(msg.getBytes("utf-8"), userId.getBytes("utf-8"), bcecPrivateKey));

//        log.debug("生成的簽名：{}", sign);

        return sign;

    }

    public static BCECPrivateKey getPrivatekeyFromD(String privateKey) {

        ECPrivateKeySpec ecPrivateKeySpec = new ECPrivateKeySpec(new BigInteger(privateKey, 16), ecParameterSpec);

        return new BCECPrivateKey("EC", ecPrivateKeySpec, BouncyCastleProvider.CONFIGURATION);

    }

    /**

     * @param msg

     * @param userId

     * @param privateKey

     * @return r||s，直接拼接byte陣列的rs

     */

    public static byte[] signSm3WithSm2(byte[] msg, byte[] userId, PrivateKey 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, PrivateKey privateKey) {

        try {

            SM2ParameterSpec parameterSpec = new SM2ParameterSpec(userId);

            Signature signer = Signature.getInstance("SM3withSM2", "BC");

            signer.setParameter(parameterSpec);

            signer.initSign(privateKey, new SecureRandom());

            signer.update(msg, 0, msg.length);

            byte[] sig = signer.sign();

            return sig;

        } catch (Exception e) {

            throw new RuntimeException(e);

        }

    }

    /**

     * BC的SM3withSM2簽名得到的結果的rs是asn1格式的，這個方法轉化成直接拼接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(ASN1Integer.getInstance(seq.getObjectAt(0)).getValue());

        byte[] s = bigIntToFixexLengthBytes(ASN1Integer.getInstance(seq.getObjectAt(1)).getValue());

        byte[] result = new byte[RS_LEN * 2];

        System.arraycopy(r, 0, result, 0, r.length);

        System.arraycopy(s, 0, result, RS_LEN, s.length);

        return result;

    }

    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);

            System.arraycopy(rs, 0, result, RS_LEN - rs.length, rs.length);

            return result;

        } else {

            throw new RuntimeException("err rs: " + Hex.toHexString(rs));

        }

    }

    /**

     * @param msg

     * @param userId

     * @param rs 簽名

     * @param publicKey

     * @return

     */

    public static boolean verifySm3WithSm2(String msg, String userId, String rs, String publicKey) throws Exception {

        return verifySm3WithSm2(msg.getBytes("utf-8"), userId.getBytes("utf-8"), Base64.decodeBase64(rs), getBCECPublicKeyFromD(publicKey));

    }

    /**

     * @param msg

     * @param userId

     * @param rs        r||s，直接拼接byte陣列的rs

     * @param publicKey

     * @return

     */

    public static boolean verifySm3WithSm2(byte[] msg, byte[] userId, byte[] rs, PublicKey publicKey) {

        return verifySm3WithSm2Asn1Rs(msg, userId, rsPlainByteArrayToAsn1(rs), publicKey);

    }

    /**

     * BC的SM3withSM2驗籤需要的rs是asn1格式的，這個方法將直接拼接r||s的位元組陣列轉化成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 RuntimeException("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 ASN1Integer(r));

        v.add(new ASN1Integer(s));

        try {

            return new DERSequence(v).getEncoded("DER");

        } catch (IOException e) {

            throw new RuntimeException(e);

        }

    }

    /**

     * @param msg

     * @param userId

     * @param rs        in <b>asn1 format</b>

     * @param publicKey

     * @return

     */

    public static boolean verifySm3WithSm2Asn1Rs(byte[] msg, byte[] userId, byte[] rs, PublicKey publicKey) {

        try {

            SM2ParameterSpec parameterSpec = new SM2ParameterSpec(userId);

            Signature verifier = Signature.getInstance("SM3withSM2", new BouncyCastleProvider());

            verifier.setParameter(parameterSpec);

            verifier.initVerify(publicKey);

            verifier.update(msg, 0, msg.length);

            return verifier.verify(rs);

        } catch (Exception e) {

            throw new RuntimeException(e);

        }

    }

    /**

     * 轉成公鑰物件

     *

     * @param pubKey

     * @return

     */

    public static PublicKey getBCECPublicKeyFromD(String pubKey) throws Exception {

        //TODO 不知道為什麼在公鑰前加04才不會有問題

        final String prefix = "04";

        if (!pubKey.startsWith(prefix)) {

            pubKey = prefix + pubKey;

        }

        // 將公鑰HEX字串轉換為橢圓曲線對應的點

        ECPoint ecPoint = x9ECParameters.getCurve().decodePoint(Hex.decode(pubKey));

        ECPublicKeySpec eCPublicKeySpec = new ECPublicKeySpec(ecPoint, ecParameterSpec);

        return new BCECPublicKey("EC", eCPublicKeySpec, BouncyCastleProvider.CONFIGURATION);

    }

//    /**

//     * 國密公私鑰生成

//     *

//     * @throws NoSuchAlgorithmException

//     * @throws InvalidAlgorithmParameterException

//     */

//    @Test

//    public void test11() throws NoSuchAlgorithmException, InvalidAlgorithmParameterException {

//        // 獲取SM2橢圓曲線的引數

//        final ECGenParameterSpec sm2Spec = new ECGenParameterSpec("sm2p256v1");

//        // 獲取一個橢圓曲線型別的金鑰對生成器

//        final KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", new BouncyCastleProvider());

//        // 使用SM2引數初始化生成器

//        kpg.initialize(sm2Spec);

//

//        // 使用SM2的演算法區域初始化金鑰生成器

//        kpg.initialize(sm2Spec, new SecureRandom());

//        // 獲取金鑰對

//        KeyPair keyPair = kpg.generateKeyPair();

//

//        log.info(Hex.toHexString(((BCECPrivateKey) keyPair.getPrivate()).getD().toByteArray()));

//        log.info(Hex.toHexString(((BCECPublicKey) keyPair.getPublic()).getQ().getEncoded(false)));

//    }

}

package org.lw;

import java.text.SimpleDateFormat;

import java.time.LocalDateTime;

import java.time.format.DateTimeFormatter;

import java.util.Date;

public class Main {

    public static void main(String[] args) {

        //國密 私鑰

        String strPrivateKey = "022A88CD5B5B3F56500615EF380C245CE81F32E980BB0CC708D01F9BD8558FEF";

        //國密 userId

        String strUserId = "123456789";

        //待簽名內容

        String strBody = "簽名報文字串123456";

        try {

            //簽名值

            String strSign = SmUtil.signSm3WithSm2(strBody, strUserId, strPrivateKey);

            System.out.println(getNow() + " 簽名結果：" + strSign);

            //C#.NET 簽名值

            // strSign="aBqRJHtnPJvYJNL6C+KoH0BGYmO+3tRJ/IK5TYHuxdqcD41Nr5z2/bq1zx3m2nrPxB/imLpIUQmR/EpubiS/Ig==";

            //國密 公鑰

            String strPubKey = "3D3AA4732B56DFCC643CF1B0ABAF75EF9EC16A756C18967090E8250E0A49915EEFDD5CBE16BB34CC93B20D3EFB4C842FFCE13887FE211DAE33DFD2AD025265D6";

            //驗證簽名

            boolean bRst = SmUtil.verifySm3WithSm2(strBody, strUserId, strSign, strPubKey);

            System.out.println(getNow() + " 驗證簽名：" + bRst);

        } catch (Exception ex) {

            System.out.println(ex.getMessage());

        }

    }

    public static String getNow() {

        String formatStr = "yyyy-MM-dd HH:mm:ss.SSS";

        LocalDateTime lnow = LocalDateTime.now();

        DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern(formatStr);

        String nowFormat = lnow.format(dateTimeFormatter);

        return nowFormat;

    }

}