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+using Org.BouncyCastle.Crypto;
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+using Org.BouncyCastle.Crypto.Digests;
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+using Org.BouncyCastle.Crypto.Generators;
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+using Org.BouncyCastle.Crypto.Parameters;
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+using Org.BouncyCastle.Math;
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+using Org.BouncyCastle.Math.EC;
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+using Org.BouncyCastle.Security;
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+using Org.BouncyCastle.Utilities.Encoders;
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+using System;
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+using System.Collections.Generic;
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+using System.IO;
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+using System.Linq;
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+using System.Text;
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+
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+namespace CallCenter.Utility
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+{
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+ /// <summary>
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+ /// SM2工具类
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+ /// </summary>
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+ public class SM2CryptoUtil
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+ {
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+
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+ #region 获取公钥私钥
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+ /// <summary>
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+ /// 获取公钥私钥
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+ /// </summary>
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+ /// <returns></returns>
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+ public static SM2Model GetKey()
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+ {
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+ SM2 sm2 = SM2.Instance;
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+ AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.GenerateKeyPair();
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+ ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters)key.Private;
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+ ECPublicKeyParameters ecpub = (ECPublicKeyParameters)key.Public;
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+ BigInteger privateKey = ecpriv.D;
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+ ECPoint publicKey = ecpub.Q;
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+ SM2Model sM2Model = new SM2Model();
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+ sM2Model.PrivateKey = Encoding.UTF8.GetString(Hex.Encode(privateKey.ToByteArray())).ToUpper();
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+ sM2Model.PublicKey = Encoding.UTF8.GetString(Hex.Encode(publicKey.GetEncoded())).ToUpper();
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+ return sM2Model;
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+ }
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+ #endregion
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+
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+ #region 加密
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+ /// <summary>
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+ /// 加密
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+ /// </summary>
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+ /// <param name="publickey">公钥</param>
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+ /// <param name="sourceData">需要加密的值</param>
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+ /// <returns>加密结果</returns>
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+ public static string Encrypt(string publickey, string sourceData)
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+ {
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+ var data = Encrypt(Hex.Decode(publickey), Encoding.UTF8.GetBytes(sourceData));
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+ return data;
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+ }
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+
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+ /// <summary>
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+ /// 加密
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+ /// </summary>
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+ /// <param name="publicKey">公钥</param>
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+ /// <param name="data">需要加密的值</param>
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+ /// <returns></returns>
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+ public static String Encrypt(byte[] publicKey, byte[] data)
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+ {
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+ if (null == publicKey || publicKey.Length == 0)
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+ {
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+ return null;
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+ }
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+ if (data == null || data.Length == 0)
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+ {
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+ return null;
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+ }
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+
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+ byte[] source = new byte[data.Length];
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+ Array.Copy(data, 0, source, 0, data.Length);
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+
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+ Cipher cipher = new Cipher();
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+ SM2 sm2 = SM2.Instance;
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+
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+ ECPoint userKey = sm2.ecc_curve.DecodePoint(publicKey);
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+
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+ ECPoint c1 = cipher.Init_enc(sm2, userKey);
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+ cipher.Encrypt(source);
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+
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+ byte[] c3 = new byte[32];
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+ cipher.Dofinal(c3);
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+
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+ String sc1 = Encoding.UTF8.GetString(Hex.Encode(c1.GetEncoded()));
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+ String sc2 = Encoding.UTF8.GetString(Hex.Encode(source));
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+ String sc3 = Encoding.UTF8.GetString(Hex.Encode(c3));
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+
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+ return (sc1 + sc2 + sc3).ToUpper();
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+ }
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+ #endregion
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+
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+ #region 解密
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+
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+ /// <summary>
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+ ///
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+ /// </summary>
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+ /// <param name="privateKey"></param>
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+ /// <param name="encryptedData"></param>
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+ /// <returns></returns>
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+ public static string Decrypt(string privateKey, string encryptedData)
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+ {
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+ var data = Encoding.UTF8.GetString(Decrypt(Hex.Decode(privateKey), Hex.Decode(encryptedData)));
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+ return data;
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+ }
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+ /// <summary>
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+ /// 解密
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+ /// </summary>
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+ /// <param name="privateKey"></param>
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+ /// <param name="encryptedData"></param>
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+ /// <returns></returns>
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+ public static byte[] Decrypt(byte[] privateKey, byte[] encryptedData)
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+ {
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+ if (null == privateKey || privateKey.Length == 0)
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+ {
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+ return null;
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+ }
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+ if (encryptedData == null || encryptedData.Length == 0)
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+ {
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+ return null;
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+ }
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+
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+ String data = Encoding.UTF8.GetString(Hex.Encode(encryptedData));
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+
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+ byte[] c1Bytes = Hex.Decode(Encoding.UTF8.GetBytes(data.Substring(0, 130)));
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+ int c2Len = encryptedData.Length - 97;
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+ byte[] c2 = Hex.Decode(Encoding.UTF8.GetBytes(data.Substring(130, 2 * c2Len)));
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+ byte[] c3 = Hex.Decode(Encoding.UTF8.GetBytes(data.Substring(130 + 2 * c2Len, 64)));
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+
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+ SM2 sm2 = SM2.Instance;
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+ BigInteger userD = new BigInteger(1, privateKey);
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+
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+ //ECPoint c1 = sm2.ecc_curve.DecodePoint(c1Bytes);
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+
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+ ECPoint c1 = sm2.ecc_curve.DecodePoint(c1Bytes);
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+ Cipher cipher = new Cipher();
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+ cipher.Init_dec(userD, c1);
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+ cipher.Decrypt(c2);
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+ cipher.Dofinal(c3);
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+
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+ return c2;
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+ }
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+ #endregion
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+
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+ private class Cipher
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+ {
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+ private int ct;
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+ private ECPoint p2;
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+ private SM3Digest sm3keybase;
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+ private SM3Digest sm3c3;
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+ private byte[] key;
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+ private byte keyOff;
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+
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+ public Cipher()
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+ {
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+ this.ct = 1;
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+ this.key = new byte[32];
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+ this.keyOff = 0;
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+ }
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+
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+ public static byte[] byteConvert32Bytes(BigInteger n)
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+ {
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+ byte[] tmpd = null;
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+ if (n == null)
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+ {
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+ return null;
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+ }
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+
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+ if (n.ToByteArray().Length == 33)
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+ {
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+ tmpd = new byte[32];
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+ Array.Copy(n.ToByteArray(), 1, tmpd, 0, 32);
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+ }
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+ else if (n.ToByteArray().Length == 32)
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+ {
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+ tmpd = n.ToByteArray();
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+ }
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+ else
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+ {
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+ tmpd = new byte[32];
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+ for (int i = 0; i < 32 - n.ToByteArray().Length; i++)
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+ {
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+ tmpd[i] = 0;
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+ }
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+ Array.Copy(n.ToByteArray(), 0, tmpd, 32 - n.ToByteArray().Length, n.ToByteArray().Length);
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+ }
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+ return tmpd;
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+ }
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+
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+ private void Reset()
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+ {
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+ this.sm3keybase = new SM3Digest();
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+ this.sm3c3 = new SM3Digest();
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+
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+ byte[] p = byteConvert32Bytes(p2.Normalize().XCoord.ToBigInteger());
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+ this.sm3keybase.BlockUpdate(p, 0, p.Length);
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+ this.sm3c3.BlockUpdate(p, 0, p.Length);
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+
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+ p = byteConvert32Bytes(p2.Normalize().YCoord.ToBigInteger());
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+ this.sm3keybase.BlockUpdate(p, 0, p.Length);
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+ this.ct = 1;
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+ NextKey();
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+ }
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+
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+ private void NextKey()
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+ {
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+ SM3Digest sm3keycur = new SM3Digest(this.sm3keybase);
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+ sm3keycur.Update((byte)(ct >> 24 & 0xff));
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+ sm3keycur.Update((byte)(ct >> 16 & 0xff));
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+ sm3keycur.Update((byte)(ct >> 8 & 0xff));
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+ sm3keycur.Update((byte)(ct & 0xff));
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+ sm3keycur.DoFinal(key, 0);
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+ this.keyOff = 0;
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+ this.ct++;
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+ }
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+
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+ public ECPoint Init_enc(SM2 sm2, ECPoint userKey)
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+ {
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+ AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.GenerateKeyPair();
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+ ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters)key.Private;
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+ ECPublicKeyParameters ecpub = (ECPublicKeyParameters)key.Public;
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+ BigInteger k = ecpriv.D;
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+ ECPoint c1 = ecpub.Q;
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+ this.p2 = userKey.Multiply(k);
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+ Reset();
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+ return c1;
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+ }
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+
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+ public void Encrypt(byte[] data)
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+ {
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+ this.sm3c3.BlockUpdate(data, 0, data.Length);
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+ for (int i = 0; i < data.Length; i++)
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+ {
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+ if (keyOff == key.Length)
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+ {
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+ NextKey();
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+ }
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+ data[i] ^= key[keyOff++];
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+ }
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+ }
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+
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+ public void Init_dec(BigInteger userD, ECPoint c1)
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+ {
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+ this.p2 = c1.Multiply(userD);
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+ Reset();
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+ }
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+
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+ public void Decrypt(byte[] data)
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+ {
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+ for (int i = 0; i < data.Length; i++)
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+ {
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+ if (keyOff == key.Length)
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+ {
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+ NextKey();
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+ }
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+ data[i] ^= key[keyOff++];
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+ }
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+
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+ this.sm3c3.BlockUpdate(data, 0, data.Length);
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+ }
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+
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+ public void Dofinal(byte[] c3)
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+ {
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+ byte[] p = byteConvert32Bytes(p2.Normalize().YCoord.ToBigInteger());
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+ this.sm3c3.BlockUpdate(p, 0, p.Length);
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+ this.sm3c3.DoFinal(c3, 0);
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+ Reset();
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+ }
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+ }
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+ private class SM2
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+ {
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+ public static SM2 Instance
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+ {
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+ get
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+ {
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+ return new SM2();
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+ }
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+
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+ }
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+ public static SM2 InstanceTest
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+ {
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+ get
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+ {
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+ return new SM2();
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+ }
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+
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+ }
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+
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+ public static readonly string[] sm2_param = {
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+ "FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF",// p,0
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+ "FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC",// a,1
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+ "28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93",// b,2
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+ "FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123",// n,3
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+ "32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7",// gx,4
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+ "BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0" // gy,5
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+ };
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+
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+ public string[] ecc_param = sm2_param;
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+
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+ public readonly BigInteger ecc_p;
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+ public readonly BigInteger ecc_a;
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+ public readonly BigInteger ecc_b;
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+ public readonly BigInteger ecc_n;
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+ public readonly BigInteger ecc_gx;
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+ public readonly BigInteger ecc_gy;
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+
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+ public readonly ECCurve ecc_curve;
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+ public readonly ECPoint ecc_point_g;
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+
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+ public readonly ECDomainParameters ecc_bc_spec;
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+
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+ public readonly ECKeyPairGenerator ecc_key_pair_generator;
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+
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+ private SM2()
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+ {
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|
318
|
+ ecc_param = sm2_param;
|
|
|
319
|
+
|
|
|
320
|
+ ECFieldElement ecc_gx_fieldelement;
|
|
|
321
|
+ ECFieldElement ecc_gy_fieldelement;
|
|
|
322
|
+
|
|
|
323
|
+ ecc_p = new BigInteger(ecc_param[0], 16);
|
|
|
324
|
+ ecc_a = new BigInteger(ecc_param[1], 16);
|
|
|
325
|
+ ecc_b = new BigInteger(ecc_param[2], 16);
|
|
|
326
|
+ ecc_n = new BigInteger(ecc_param[3], 16);
|
|
|
327
|
+ ecc_gx = new BigInteger(ecc_param[4], 16);
|
|
|
328
|
+ ecc_gy = new BigInteger(ecc_param[5], 16);
|
|
|
329
|
+
|
|
|
330
|
+
|
|
|
331
|
+ ecc_gx_fieldelement = new FpFieldElement(ecc_p, ecc_gx);
|
|
|
332
|
+ ecc_gy_fieldelement = new FpFieldElement(ecc_p, ecc_gy);
|
|
|
333
|
+
|
|
|
334
|
+ ecc_curve = new FpCurve(ecc_p, ecc_a, ecc_b);
|
|
|
335
|
+ ecc_point_g = new FpPoint(ecc_curve, ecc_gx_fieldelement, ecc_gy_fieldelement);
|
|
|
336
|
+
|
|
|
337
|
+ ecc_bc_spec = new ECDomainParameters(ecc_curve, ecc_point_g, ecc_n);
|
|
|
338
|
+
|
|
|
339
|
+ ECKeyGenerationParameters ecc_ecgenparam;
|
|
|
340
|
+ ecc_ecgenparam = new ECKeyGenerationParameters(ecc_bc_spec, new SecureRandom());
|
|
|
341
|
+
|
|
|
342
|
+ ecc_key_pair_generator = new ECKeyPairGenerator();
|
|
|
343
|
+ ecc_key_pair_generator.Init(ecc_ecgenparam);
|
|
|
344
|
+ }
|
|
|
345
|
+
|
|
|
346
|
+ public virtual byte[] Sm2GetZ(byte[] userId, ECPoint userKey)
|
|
|
347
|
+ {
|
|
|
348
|
+ SM3Digest sm3 = new SM3Digest();
|
|
|
349
|
+ byte[] p;
|
|
|
350
|
+ // userId length
|
|
|
351
|
+ int len = userId.Length * 8;
|
|
|
352
|
+ sm3.Update((byte)(len >> 8 & 0x00ff));
|
|
|
353
|
+ sm3.Update((byte)(len & 0x00ff));
|
|
|
354
|
+
|
|
|
355
|
+ // userId
|
|
|
356
|
+ sm3.BlockUpdate(userId, 0, userId.Length);
|
|
|
357
|
+
|
|
|
358
|
+ // a,b
|
|
|
359
|
+ p = ecc_a.ToByteArray();
|
|
|
360
|
+ sm3.BlockUpdate(p, 0, p.Length);
|
|
|
361
|
+ p = ecc_b.ToByteArray();
|
|
|
362
|
+ sm3.BlockUpdate(p, 0, p.Length);
|
|
|
363
|
+ // gx,gy
|
|
|
364
|
+ p = ecc_gx.ToByteArray();
|
|
|
365
|
+ sm3.BlockUpdate(p, 0, p.Length);
|
|
|
366
|
+ p = ecc_gy.ToByteArray();
|
|
|
367
|
+ sm3.BlockUpdate(p, 0, p.Length);
|
|
|
368
|
+
|
|
|
369
|
+ // x,y
|
|
|
370
|
+ p = userKey.AffineXCoord.ToBigInteger().ToByteArray();
|
|
|
371
|
+ sm3.BlockUpdate(p, 0, p.Length);
|
|
|
372
|
+ p = userKey.AffineYCoord.ToBigInteger().ToByteArray();
|
|
|
373
|
+ sm3.BlockUpdate(p, 0, p.Length);
|
|
|
374
|
+
|
|
|
375
|
+ // Z
|
|
|
376
|
+ byte[] md = new byte[sm3.GetDigestSize()];
|
|
|
377
|
+ sm3.DoFinal(md, 0);
|
|
|
378
|
+
|
|
|
379
|
+ return md;
|
|
|
380
|
+ }
|
|
|
381
|
+ }
|
|
|
382
|
+ public class SM2Model
|
|
|
383
|
+ {
|
|
|
384
|
+ /// <summary>
|
|
|
385
|
+ /// 公钥
|
|
|
386
|
+ /// </summary>
|
|
|
387
|
+ public string PublicKey { get; set; }
|
|
|
388
|
+ /// <summary>
|
|
|
389
|
+ /// 私钥
|
|
|
390
|
+ /// </summary>
|
|
|
391
|
+ public string PrivateKey { get; set; }
|
|
|
392
|
+ }
|
|
|
393
|
+ /// <summary>
|
|
|
394
|
+ /// 公钥
|
|
|
395
|
+ /// </summary>
|
|
|
396
|
+ public static string PublicKey = "042DBA45E7B03394F603CADAFCDDEC854D3E01A4E9C52CD799B85B1A14BDB970137AE58BA" +
|
|
|
397
|
+ "553D79F058604DC1CD4B77DE5408BA3308E767584100C2B663510C819";
|
|
|
398
|
+
|
|
|
399
|
+ /// <summary>
|
|
|
400
|
+ /// 私钥
|
|
|
401
|
+ /// </summary>
|
|
|
402
|
+ public static string PrivateKey = "BF1F907B4E0487F798DC80AFD7BC2A6201E8514233002272EA3BE2FC6F797843";
|
|
|
403
|
+
|
|
|
404
|
+ /// <summary>
|
|
|
405
|
+ /// 公钥加密明文
|
|
|
406
|
+ /// </summary>
|
|
|
407
|
+ /// <param name="plainText">明文</param>
|
|
|
408
|
+ /// <returns>密文</returns>
|
|
|
409
|
+ public static string Encrypt(string plainText)
|
|
|
410
|
+ {
|
|
|
411
|
+ return Encrypt(PublicKey, plainText);
|
|
|
412
|
+ }
|
|
|
413
|
+
|
|
|
414
|
+ /// <summary>
|
|
|
415
|
+ /// SM2私钥解密密文
|
|
|
416
|
+ /// </summary>
|
|
|
417
|
+ /// <param name="cipherText">密文</param>
|
|
|
418
|
+ /// <returns>明文</returns>
|
|
|
419
|
+ public static string Decrypt(string cipherText)
|
|
|
420
|
+ {
|
|
|
421
|
+ if (!cipherText.StartsWith("04")) cipherText = "04" + cipherText;//
|
|
|
422
|
+ return Decrypt(PrivateKey, cipherText);
|
|
|
423
|
+
|
|
|
424
|
+ }
|
|
|
425
|
+ }
|
|
|
426
|
+}
|
