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C# SM加密

2019年11月08日 安全 ⁄ 共 23607字 ⁄ 字号 暂无评论

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Math.EC;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Security;

namespace ConsoleApplication1
{
public class SM2
{
public static SM2 Instance
{
get
{
return new SM2();
}

}
public static SM2 InstanceTest
{
get
{
return new SM2();
}

}

public static readonly string[] sm2_param = {
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF",// p,0
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC",// a,1
"28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93",// b,2
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123",// n,3
"32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7",// gx,4
"BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0" // gy,5
};

public string[] ecc_param = sm2_param;

public readonly BigInteger ecc_p;
public readonly BigInteger ecc_a;
public readonly BigInteger ecc_b;
public readonly BigInteger ecc_n;
public readonly BigInteger ecc_gx;
public readonly BigInteger ecc_gy;

public readonly ECCurve ecc_curve;
public readonly ECPoint ecc_point_g;

public readonly ECDomainParameters ecc_bc_spec;

public readonly ECKeyPairGenerator ecc_key_pair_generator;

private SM2()
{
ecc_param = sm2_param;

ECFieldElement ecc_gx_fieldelement;
ECFieldElement ecc_gy_fieldelement;

ecc_p = new BigInteger(ecc_param[0], 16);
ecc_a = new BigInteger(ecc_param[1], 16);
ecc_b = new BigInteger(ecc_param[2], 16);
ecc_n = new BigInteger(ecc_param[3], 16);
ecc_gx = new BigInteger(ecc_param[4], 16);
ecc_gy = new BigInteger(ecc_param[5], 16);

ecc_gx_fieldelement = new FpFieldElement(ecc_p, ecc_gx);
ecc_gy_fieldelement = new FpFieldElement(ecc_p, ecc_gy);

ecc_curve = new FpCurve(ecc_p, ecc_a, ecc_b);
ecc_point_g = new FpPoint(ecc_curve, ecc_gx_fieldelement, ecc_gy_fieldelement);

ecc_bc_spec = new ECDomainParameters(ecc_curve, ecc_point_g, ecc_n);

ECKeyGenerationParameters ecc_ecgenparam;
ecc_ecgenparam = new ECKeyGenerationParameters(ecc_bc_spec, new SecureRandom());

ecc_key_pair_generator = new ECKeyPairGenerator();
ecc_key_pair_generator.Init(ecc_ecgenparam);
}

public virtual byte[] Sm2GetZ(byte[] userId, ECPoint userKey)
{
SM3Digest sm3 = new SM3Digest();
byte[] p;
// userId length
int len = userId.Length * 8;
sm3.Update((byte)(len >> 8 & 0x00ff));
sm3.Update((byte)(len & 0x00ff));

// userId
sm3.BlockUpdate(userId, 0, userId.Length);

// a,b
p = ecc_a.ToByteArray();
sm3.BlockUpdate(p, 0, p.Length);
p = ecc_b.ToByteArray();
sm3.BlockUpdate(p, 0, p.Length);
// gx,gy
p = ecc_gx.ToByteArray();
sm3.BlockUpdate(p, 0, p.Length);
p = ecc_gy.ToByteArray();
sm3.BlockUpdate(p, 0, p.Length);

// x,y
//p = userKey.X.ToBigInteger().ToByteArray();
//sm3.BlockUpdate(p, 0, p.Length);
//p = userKey.Y.ToBigInteger().ToByteArray();
//sm3.BlockUpdate(p, 0, p.Length);
p = userKey.X.ToBigInteger().ToByteArray();
sm3.BlockUpdate(p, 0, p.Length);
p = userKey.Y.ToBigInteger().ToByteArray();
sm3.BlockUpdate(p, 0, p.Length);

// Z
byte[] md = new byte[sm3.GetDigestSize()];
sm3.DoFinal(md, 0);

return md;
}

}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities.Encoders;
using Org.BouncyCastle.Math.EC;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto;

namespace ConsoleApplication1
{
public class SM2Utils
{
public static List GenerateKeyPair()
{
List list = new List();
SM2 sm2 = SM2.Instance;
AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.GenerateKeyPair();
ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters)key.Private;
ECPublicKeyParameters ecpub = (ECPublicKeyParameters)key.Public;
BigInteger privateKey = ecpriv.D;
ECPoint publicKey = ecpub.Q;
byte[] pubKey = Hex.Encode(publicKey.GetEncoded());
list.Add(pubKey);
byte[] priKey = Hex.Encode(privateKey.ToByteArray());
list.Add(priKey);
//System.Console.Out.WriteLine("公钥: " + Encoding.Default.GetString(Hex.Encode(publicKey.GetEncoded())).ToUpper());
//System.Console.Out.WriteLine("私钥: " + Encoding.Default.GetString(Hex.Encode(privateKey.ToByteArray())).ToUpper());
return list;
}

public static List GenerateKeyPair(string t)
{
List list = new List();
SM2 sm2 = SM2.Instance;
AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.GenerateKeyPair();
ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters)key.Private;
ECPublicKeyParameters ecpub = (ECPublicKeyParameters)key.Public;
BigInteger privateKey = ecpriv.D;
ECPoint publicKey = ecpub.Q;
string pubKey = Encoding.Default.GetString(Hex.Encode(publicKey.GetEncoded())).ToUpper();
list.Add(pubKey);
string priKey = Encoding.Default.GetString(Hex.Encode(privateKey.ToByteArray())).ToUpper();
list.Add(priKey);
//System.Console.Out.WriteLine("公钥: " + Encoding.Default.GetString(Hex.Encode(publicKey.GetEncoded())).ToUpper());
//System.Console.Out.WriteLine("私钥: " + Encoding.Default.GetString(Hex.Encode(privateKey.ToByteArray())).ToUpper());
return list;
}

public static String Encrypt(byte[] publicKey, byte[] data)
{
if (null == publicKey || publicKey.Length == 0)
{
return null;
}
if (data == null || data.Length == 0)
{
return null;
}

byte[] source = new byte[data.Length];
Array.Copy(data, 0, source, 0, data.Length);

Cipher cipher = new Cipher();
SM2 sm2 = SM2.Instance;

ECPoint userKey = sm2.ecc_curve.DecodePoint(publicKey);

ECPoint c1 = cipher.Init_enc(sm2, userKey);
cipher.Encrypt(source);

byte[] c3 = new byte[32];
cipher.Dofinal(c3);

String sc1 = Encoding.Default.GetString(Hex.Encode(c1.GetEncoded()));
String sc2 = Encoding.Default.GetString(Hex.Encode(source));
String sc3 = Encoding.Default.GetString(Hex.Encode(c3));

return (sc1 + sc2 + sc3).ToUpper();
}

public static byte[] Decrypt(byte[] privateKey, byte[] encryptedData)
{
if (null == privateKey || privateKey.Length == 0)
{
return null;
}
if (encryptedData == null || encryptedData.Length == 0)
{
return null;
}

String data = Encoding.Default.GetString(Hex.Encode(encryptedData));

byte[] c1Bytes = Hex.Decode(Encoding.Default.GetBytes(data.Substring(0, 130)));
int c2Len = encryptedData.Length - 97;
byte[] c2 = Hex.Decode(Encoding.Default.GetBytes(data.Substring(130, 2 * c2Len)));
byte[] c3 = Hex.Decode(Encoding.Default.GetBytes(data.Substring(130 + 2 * c2Len, 64)));

SM2 sm2 = SM2.Instance;
BigInteger userD = new BigInteger(1, privateKey);

ECPoint c1 = sm2.ecc_curve.DecodePoint(c1Bytes);
Cipher cipher = new Cipher();
cipher.Init_dec(userD, c1);
cipher.Decrypt(c2);
cipher.Dofinal(c3);

return c2;
}

#region MyRegion

//[STAThread]
//public static void Main()
//{
// GenerateKeyPair();

// String plainText = "ererfeiisgod";
// byte[] sourceData = Encoding.Default.GetBytes(plainText);

// //下面的秘钥可以使用generateKeyPair()生成的秘钥内容
// // 国密规范正式私钥
// String prik = "3690655E33D5EA3D9A4AE1A1ADD766FDEA045CDEAA43A9206FB8C430CEFE0D94";
// // 国密规范正式公钥
// String pubk = "04F6E0C3345AE42B51E06BF50B98834988D54EBC7460FE135A48171BC0629EAE205EEDE253A530608178A98F1E19BB737302813BA39ED3FA3C51639D7A20C7391A";

// System.Console.Out.WriteLine("加密: ");
// String cipherText = SM2Utils.Encrypt(Hex.Decode(pubk), sourceData);
// System.Console.Out.WriteLine(cipherText);
// System.Console.Out.WriteLine("解密: ");
// plainText = Encoding.Default.GetString(SM2Utils.Decrypt(Hex.Decode(prik), Hex.Decode(cipherText)));
// System.Console.Out.WriteLine(plainText);

// Console.ReadLine();
//}
#endregion
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Org.BouncyCastle.Crypto;

namespace ConsoleApplication1
{
public abstract class GeneralDigest : IDigest
{
private const int BYTE_LENGTH = 64;

private byte[] xBuf;
private int xBufOff;

private long byteCount;

internal GeneralDigest()
{
xBuf = new byte[4];
}

internal GeneralDigest(GeneralDigest t)
{
xBuf = new byte[t.xBuf.Length];
Array.Copy(t.xBuf, 0, xBuf, 0, t.xBuf.Length);

xBufOff = t.xBufOff;
byteCount = t.byteCount;
}

public void Update(byte input)
{
xBuf[xBufOff++] = input;

if (xBufOff == xBuf.Length)
{
ProcessWord(xBuf, 0);
xBufOff = 0;
}

byteCount++;
}

public void BlockUpdate(
byte[] input,
int inOff,
int length)
{
//
// fill the current word
//
while ((xBufOff != 0) && (length > 0))
{
Update(input[inOff]);
inOff++;
length--;
}

//
// process whole words.
//
while (length > xBuf.Length)
{
ProcessWord(input, inOff);

inOff += xBuf.Length;
length -= xBuf.Length;
byteCount += xBuf.Length;
}

//
// load in the remainder.
//
while (length > 0)
{
Update(input[inOff]);

inOff++;
length--;
}
}

public void Finish()
{
long bitLength = (byteCount << 3);

//
// add the pad bytes.
//
Update(unchecked((byte)128));

while (xBufOff != 0) Update(unchecked((byte)0));
ProcessLength(bitLength);
ProcessBlock();
}

public virtual void Reset()
{
byteCount = 0;
xBufOff = 0;
Array.Clear(xBuf, 0, xBuf.Length);
}

public int GetByteLength()
{
return BYTE_LENGTH;
}

internal abstract void ProcessWord(byte[] input, int inOff);
internal abstract void ProcessLength(long bitLength);
internal abstract void ProcessBlock();
public abstract string AlgorithmName { get; }
public abstract int GetDigestSize();
public abstract int DoFinal(byte[] output, int outOff);
}

public class SupportClass
{
///

/// Performs an unsigned bitwise right shift with the specified number
///

/// Number to operate on
/// Ammount of bits to shift
/// The resulting number from the shift operation
public static int URShift(int number, int bits)
{
if (number >= 0)
return number >> bits;
else
return (number >> bits) + (2 << ~bits);
}

///

/// Performs an unsigned bitwise right shift with the specified number
///

/// Number to operate on
/// Ammount of bits to shift
/// The resulting number from the shift operation
public static int URShift(int number, long bits)
{
return URShift(number, (int)bits);
}

///

/// Performs an unsigned bitwise right shift with the specified number
///

/// Number to operate on
/// Ammount of bits to shift
/// The resulting number from the shift operation
public static long URShift(long number, int bits)
{
if (number >= 0)
return number >> bits;
else
return (number >> bits) + (2L << ~bits);
}

///

/// Performs an unsigned bitwise right shift with the specified number
///

/// Number to operate on
/// Ammount of bits to shift
/// The resulting number from the shift operation
public static long URShift(long number, long bits)
{
return URShift(number, (int)bits);
}

}

public class SM3Digest : GeneralDigest
{
public override string AlgorithmName
{
get
{
return "SM3";
}

}
public override int GetDigestSize()
{
return DIGEST_LENGTH;
}

private const int DIGEST_LENGTH = 32;

private static readonly int[] v0 = new int[] { 0x7380166f, 0x4914b2b9, 0x172442d7, unchecked((int)0xda8a0600), unchecked((int)0xa96f30bc), 0x163138aa, unchecked((int)0xe38dee4d), unchecked((int)0xb0fb0e4e) };

private int[] v = new int[8];
private int[] v_ = new int[8];

private static readonly int[] X0 = new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

private int[] X = new int[68];
private int xOff;

private int T_00_15 = 0x79cc4519;
private int T_16_63 = 0x7a879d8a;

public SM3Digest()
{
Reset();
}

public SM3Digest(SM3Digest t)
: base(t)
{

Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;

Array.Copy(t.v, 0, v, 0, t.v.Length);
}

public override void Reset()
{
base.Reset();

Array.Copy(v0, 0, v, 0, v0.Length);

xOff = 0;
Array.Copy(X0, 0, X, 0, X0.Length);
}

internal override void ProcessBlock()
{
int i;

int[] ww = X;
int[] ww_ = new int[64];

for (i = 16; i < 68; i++)
{
ww[i] = P1(ww[i - 16] ^ ww[i - 9] ^ (ROTATE(ww[i - 3], 15))) ^ (ROTATE(ww[i - 13], 7)) ^ ww[i - 6];
}

for (i = 0; i < 64; i++)
{
ww_[i] = ww[i] ^ ww[i + 4];
}

int[] vv = v;
int[] vv_ = v_;

Array.Copy(vv, 0, vv_, 0, v0.Length);

int SS1, SS2, TT1, TT2, aaa;
for (i = 0; i < 16; i++)
{
aaa = ROTATE(vv_[0], 12);
SS1 = aaa + vv_[4] + ROTATE(T_00_15, i);
SS1 = ROTATE(SS1, 7);
SS2 = SS1 ^ aaa;

TT1 = FF_00_15(vv_[0], vv_[1], vv_[2]) + vv_[3] + SS2 + ww_[i];
TT2 = GG_00_15(vv_[4], vv_[5], vv_[6]) + vv_[7] + SS1 + ww[i];
vv_[3] = vv_[2];
vv_[2] = ROTATE(vv_[1], 9);
vv_[1] = vv_[0];
vv_[0] = TT1;
vv_[7] = vv_[6];
vv_[6] = ROTATE(vv_[5], 19);
vv_[5] = vv_[4];
vv_[4] = P0(TT2);
}
for (i = 16; i < 64; i++)
{
aaa = ROTATE(vv_[0], 12);
SS1 = aaa + vv_[4] + ROTATE(T_16_63, i);
SS1 = ROTATE(SS1, 7);
SS2 = SS1 ^ aaa;

TT1 = FF_16_63(vv_[0], vv_[1], vv_[2]) + vv_[3] + SS2 + ww_[i];
TT2 = GG_16_63(vv_[4], vv_[5], vv_[6]) + vv_[7] + SS1 + ww[i];
vv_[3] = vv_[2];
vv_[2] = ROTATE(vv_[1], 9);
vv_[1] = vv_[0];
vv_[0] = TT1;
vv_[7] = vv_[6];
vv_[6] = ROTATE(vv_[5], 19);
vv_[5] = vv_[4];
vv_[4] = P0(TT2);
}
for (i = 0; i < 8; i++)
{
vv[i] ^= vv_[i];
}

// Reset
xOff = 0;
Array.Copy(X0, 0, X, 0, X0.Length);
}

internal override void ProcessWord(byte[] in_Renamed, int inOff)
{
int n = in_Renamed[inOff] << 24;
n |= (in_Renamed[++inOff] & 0xff) << 16;
n |= (in_Renamed[++inOff] & 0xff) < 14)
{
ProcessBlock();
}

X[14] = (int)(SupportClass.URShift(bitLength, 32));
X[15] = (int)(bitLength & unchecked((int)0xffffffff));
}

public static void IntToBigEndian(int n, byte[] bs, int off)
{
bs[off] = (byte)(SupportClass.URShift(n, 24));
bs[++off] = (byte)(SupportClass.URShift(n, 16));
bs[++off] = (byte)(SupportClass.URShift(n, 8));
bs[++off] = (byte)(n);
}

public override int DoFinal(byte[] out_Renamed, int outOff)
{
Finish();

for (int i = 0; i < 8; i++)
{
IntToBigEndian(v[i], out_Renamed, outOff + i * 4);
}

Reset();

return DIGEST_LENGTH;
}

private int ROTATE(int x, int n)
{
return (x <> 24 & 0x00ff));
sm3keycur.Update((byte)(ct >> 16 & 0x00ff));
sm3keycur.Update((byte)(ct >> 8 & 0x00ff));
sm3keycur.Update((byte)(ct & 0x00ff));
sm3keycur.DoFinal(key, 0);
keyOff = 0;
ct++;
}

public virtual ECPoint Init_enc(SM2 sm2, ECPoint userKey)
{
BigInteger k = null;
ECPoint c1 = null;

AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.GenerateKeyPair();
ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters)key.Private;
ECPublicKeyParameters ecpub = (ECPublicKeyParameters)key.Public;
k = ecpriv.D;
c1 = ecpub.Q;

p2 = userKey.Multiply(k);
Reset();

return c1;
}

public virtual void Encrypt(byte[] data)
{
sm3c3.BlockUpdate(data, 0, data.Length);
for (int i = 0; i < data.Length; i++)
{
if (keyOff == key.Length)
NextKey();

data[i] ^= key[keyOff++];
}
}

public virtual void Init_dec(BigInteger userD, ECPoint c1)
{
p2 = c1.Multiply(userD);
Reset();
}

public virtual void Decrypt(byte[] data)
{
for (int i = 0; i < data.Length; i++)
{
if (keyOff == key.Length)
NextKey();

data[i] ^= key[keyOff++];
}
sm3c3.BlockUpdate(data, 0, data.Length);
}

public virtual void Dofinal(byte[] c3)
{
byte[] p = p2.Y.ToBigInteger().ToByteArray();
//byte[] p = p2.Y.ToBigInteger().ToByteArray();
sm3c3.BlockUpdate(p, 0, p.Length);
sm3c3.DoFinal(c3, 0);
Reset();
}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
public class SM4
{
public const int SM4_ENCRYPT = 1;
public const int SM4_DECRYPT = 0;

private long GET_ULONG_BE(byte[] b, int i)
{
long n = (long)(b[i] & 0xff) << 24 | (long)((b[i + 1] & 0xff) << 16) | (long)((b[i + 2] & 0xff) <> 24);
b[i + 1] = (byte)(int)(0xFF & n >> 16);
b[i + 2] = (byte)(int)(0xFF & n >> 8);
b[i + 3] = (byte)(int)(0xFF & n);
}

private long SHL(long x, int n)
{
return (x & 0xFFFFFFFF) <> (32 - n);
}

private void SWAP(long[] sk, int i)
{
long t = sk[i];
sk[i] = sk[(31 - i)];
sk[(31 - i)] = t;
}

public byte[] SboxTable = new byte[] { (byte) 0xd6, (byte) 0x90, (byte) 0xe9, (byte) 0xfe,
(byte) 0xcc, (byte) 0xe1, 0x3d, (byte) 0xb7, 0x16, (byte) 0xb6,
0x14, (byte) 0xc2, 0x28, (byte) 0xfb, 0x2c, 0x05, 0x2b, 0x67,
(byte) 0x9a, 0x76, 0x2a, (byte) 0xbe, 0x04, (byte) 0xc3,
(byte) 0xaa, 0x44, 0x13, 0x26, 0x49, (byte) 0x86, 0x06,
(byte) 0x99, (byte) 0x9c, 0x42, 0x50, (byte) 0xf4, (byte) 0x91,
(byte) 0xef, (byte) 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43,
(byte) 0xed, (byte) 0xcf, (byte) 0xac, 0x62, (byte) 0xe4,
(byte) 0xb3, 0x1c, (byte) 0xa9, (byte) 0xc9, 0x08, (byte) 0xe8,
(byte) 0x95, (byte) 0x80, (byte) 0xdf, (byte) 0x94, (byte) 0xfa,
0x75, (byte) 0x8f, 0x3f, (byte) 0xa6, 0x47, 0x07, (byte) 0xa7,
(byte) 0xfc, (byte) 0xf3, 0x73, 0x17, (byte) 0xba, (byte) 0x83,
0x59, 0x3c, 0x19, (byte) 0xe6, (byte) 0x85, 0x4f, (byte) 0xa8,
0x68, 0x6b, (byte) 0x81, (byte) 0xb2, 0x71, 0x64, (byte) 0xda,
(byte) 0x8b, (byte) 0xf8, (byte) 0xeb, 0x0f, 0x4b, 0x70, 0x56,
(byte) 0x9d, 0x35, 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, (byte) 0xd1,
(byte) 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, (byte) 0x87,
(byte) 0xd4, 0x00, 0x46, 0x57, (byte) 0x9f, (byte) 0xd3, 0x27,
0x52, 0x4c, 0x36, 0x02, (byte) 0xe7, (byte) 0xa0, (byte) 0xc4,
(byte) 0xc8, (byte) 0x9e, (byte) 0xea, (byte) 0xbf, (byte) 0x8a,
(byte) 0xd2, 0x40, (byte) 0xc7, 0x38, (byte) 0xb5, (byte) 0xa3,
(byte) 0xf7, (byte) 0xf2, (byte) 0xce, (byte) 0xf9, 0x61, 0x15,
(byte) 0xa1, (byte) 0xe0, (byte) 0xae, 0x5d, (byte) 0xa4,
(byte) 0x9b, 0x34, 0x1a, 0x55, (byte) 0xad, (byte) 0x93, 0x32,
0x30, (byte) 0xf5, (byte) 0x8c, (byte) 0xb1, (byte) 0xe3, 0x1d,
(byte) 0xf6, (byte) 0xe2, 0x2e, (byte) 0x82, 0x66, (byte) 0xca,
0x60, (byte) 0xc0, 0x29, 0x23, (byte) 0xab, 0x0d, 0x53, 0x4e, 0x6f,
(byte) 0xd5, (byte) 0xdb, 0x37, 0x45, (byte) 0xde, (byte) 0xfd,
(byte) 0x8e, 0x2f, 0x03, (byte) 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b,
0x51, (byte) 0x8d, 0x1b, (byte) 0xaf, (byte) 0x92, (byte) 0xbb,
(byte) 0xdd, (byte) 0xbc, 0x7f, 0x11, (byte) 0xd9, 0x5c, 0x41,
0x1f, 0x10, 0x5a, (byte) 0xd8, 0x0a, (byte) 0xc1, 0x31,
(byte) 0x88, (byte) 0xa5, (byte) 0xcd, 0x7b, (byte) 0xbd, 0x2d,
0x74, (byte) 0xd0, 0x12, (byte) 0xb8, (byte) 0xe5, (byte) 0xb4,
(byte) 0xb0, (byte) 0x89, 0x69, (byte) 0x97, 0x4a, 0x0c,
(byte) 0x96, 0x77, 0x7e, 0x65, (byte) 0xb9, (byte) 0xf1, 0x09,
(byte) 0xc5, 0x6e, (byte) 0xc6, (byte) 0x84, 0x18, (byte) 0xf0,
0x7d, (byte) 0xec, 0x3a, (byte) 0xdc, 0x4d, 0x20, 0x79,
(byte) 0xee, 0x5f, 0x3e, (byte) 0xd7, (byte) 0xcb, 0x39, 0x48 };

public uint[] FK = { 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc };

public uint[] CK = { 0x00070e15,0x1c232a31,0x383f464d,0x545b6269,
0x70777e85,0x8c939aa1,0xa8afb6bd,0xc4cbd2d9,
0xe0e7eef5,0xfc030a11,0x181f262d,0x343b4249,
0x50575e65,0x6c737a81,0x888f969d,0xa4abb2b9,
0xc0c7ced5,0xdce3eaf1,0xf8ff060d,0x141b2229,
0x30373e45,0x4c535a61,0x686f767d,0x848b9299,
0xa0a7aeb5,0xbcc3cad1,0xd8dfe6ed,0xf4fb0209,
0x10171e25,0x2c333a41,0x484f565d,0x646b7279 };

private byte sm4Sbox(byte inch)
{
int i = inch & 0xFF;
byte retVal = SboxTable[i];
return retVal;
}

private long sm4Lt(long ka)
{
long bb = 0L;
long c = 0L;
byte[] a = new byte[4];
byte[] b = new byte[4];
PUT_ULONG_BE(ka, a, 0);
b[0] = sm4Sbox(a[0]);
b[1] = sm4Sbox(a[1]);
b[2] = sm4Sbox(a[2]);
b[3] = sm4Sbox(a[3]);
bb = GET_ULONG_BE(b, 0);
c = bb ^ ROTL(bb, 2) ^ ROTL(bb, 10) ^ ROTL(bb, 18) ^ ROTL(bb, 24);
return c;
}

private long sm4F(long x0, long x1, long x2, long x3, long rk)
{
return x0 ^ sm4Lt(x1 ^ x2 ^ x3 ^ rk);
}

private long sm4CalciRK(long ka)
{
long bb = 0L;
long rk = 0L;
byte[] a = new byte[4];
byte[] b = new byte[4];
PUT_ULONG_BE(ka, a, 0);
b[0] = sm4Sbox(a[0]);
b[1] = sm4Sbox(a[1]);
b[2] = sm4Sbox(a[2]);
b[3] = sm4Sbox(a[3]);
bb = GET_ULONG_BE(b, 0);
rk = bb ^ ROTL(bb, 13) ^ ROTL(bb, 23);
return rk;
}

private void sm4_setkey(long[] SK, byte[] key)
{
long[] MK = new long[4];
long[] k = new long[36];
int i = 0;
MK[0] = GET_ULONG_BE(key, 0);
MK[1] = GET_ULONG_BE(key, 4);
MK[2] = GET_ULONG_BE(key, 8);
MK[3] = GET_ULONG_BE(key, 12);
k[0] = MK[0] ^ (long)FK[0];
k[1] = MK[1] ^ (long)FK[1];
k[2] = MK[2] ^ (long)FK[2];
k[3] = MK[3] ^ (long)FK[3];
for (; i < 32; i++)
{
k[(i + 4)] = (k[i] ^ sm4CalciRK(k[(i + 1)] ^ k[(i + 2)] ^ k[(i + 3)] ^ (long)CK[i]));
SK[i] = k[(i + 4)];
}
}

private void sm4_one_round(long[] sk, byte[] input, byte[] output)
{
int i = 0;
long[] ulbuf = new long[36];
ulbuf[0] = GET_ULONG_BE(input, 0);
ulbuf[1] = GET_ULONG_BE(input, 4);
ulbuf[2] = GET_ULONG_BE(input, 8);
ulbuf[3] = GET_ULONG_BE(input, 12);
while (i < 32)
{
ulbuf[(i + 4)] = sm4F(ulbuf[i], ulbuf[(i + 1)], ulbuf[(i + 2)], ulbuf[(i + 3)], sk[i]);
i++;
}
PUT_ULONG_BE(ulbuf[35], output, 0);
PUT_ULONG_BE(ulbuf[34], output, 4);
PUT_ULONG_BE(ulbuf[33], output, 8);
PUT_ULONG_BE(ulbuf[32], output, 12);
}

private byte[] padding(byte[] input, int mode)
{
if (input == null)
{
return null;
}

byte[] ret = (byte[])null;
if (mode == SM4_ENCRYPT)
{
int p = 16 - input.Length % 16;
ret = new byte[input.Length + p];
Array.Copy(input, 0, ret, 0, input.Length);
for (int i = 0; i < p; i++)
{
ret[input.Length + i] = (byte)p;
}
}
else
{
int p = input[input.Length - 1];
ret = new byte[input.Length - p];
Array.Copy(input, 0, ret, 0, input.Length - p);
}
return ret;
}

public void sm4_setkey_enc(SM4_Context ctx, byte[] key)
{
ctx.mode = SM4_ENCRYPT;
sm4_setkey(ctx.sk, key);
}

public void sm4_setkey_dec(SM4_Context ctx, byte[] key)
{
int i = 0;
ctx.mode = SM4_DECRYPT;
sm4_setkey(ctx.sk, key);
for (i = 0; i 0; length -= 16, i++)
{
byte[] inBytes = new byte[16];
byte[] outBytes = new byte[16];
Array.Copy(bins, i * 16, inBytes, 0, length > 16 ? 16 : length);
sm4_one_round(ctx.sk, inBytes, outBytes);
Array.Copy(outBytes, 0, bous, i * 16, length > 16 ? 16 : length);
}

if (ctx.isPadding && ctx.mode == SM4_DECRYPT)
{
bous = padding(bous, SM4_DECRYPT);
}
return bous;
}

public byte[] sm4_crypt_cbc(SM4_Context ctx, byte[] iv, byte[] input)
{
if (ctx.isPadding && ctx.mode == SM4_ENCRYPT)
{
input = padding(input, SM4_ENCRYPT);
}

int i = 0;
int length = input.Length;
byte[] bins = new byte[length];
Array.Copy(input, 0, bins, 0, length);
byte[] bous = null;
List bousList = new List();
if (ctx.mode == SM4_ENCRYPT)
{
for (int j = 0; length > 0; length -= 16, j++)
{
byte[] inBytes = new byte[16];
byte[] outBytes = new byte[16];
byte[] out1 = new byte[16];

Array.Copy(bins, j * 16, inBytes, 0, length > 16 ? 16 : length);

for (i = 0; i < 16; i++)
{
outBytes[i] = ((byte)(inBytes[i] ^ iv[i]));
}
sm4_one_round(ctx.sk, outBytes, out1);
Array.Copy(out1, 0, iv, 0, 16);
for (int k = 0; k 0; length -= 16, j++)
{
byte[] inBytes = new byte[16];
byte[] outBytes = new byte[16];
byte[] out1 = new byte[16];

Array.Copy(bins, j * 16, inBytes, 0, length > 16 ? 16 : length);
Array.Copy(inBytes, 0, temp, 0, 16);
sm4_one_round(ctx.sk, inBytes, outBytes);
for (i = 0; i < 16; i++)
{
out1[i] = ((byte)(outBytes[i] ^ iv[i]));
}
Array.Copy(temp, 0, iv, 0, 16);
for (int k = 0; k < 16; k++)
{
bousList.Add(out1[k]);
}
}

}

if (ctx.isPadding && ctx.mode == SM4_DECRYPT)
{
bous = padding(bousList.ToArray(), SM4_DECRYPT);
return bous;
}
else
{
return bousList.ToArray();
}
}
}

public class SM4_Context
{
public int mode;

public long[] sk;

public bool isPadding;

public SM4_Context()
{
this.mode = 1;
this.isPadding = true;
this.sk = new long[32];
}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Org.BouncyCastle.Utilities.Encoders;

namespace ConsoleApplication1
{
public class SM4Utils
{
public static string secretKey = "YouOtecHHcetOuoY";
public static string iv = "HcetOuoYYouOtecH";
public static bool hexString = false;

///

/// ECB模式加密
///

///
///
public static string Encrypt_ECB(String plainText)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_ENCRYPT;

byte[] keyBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
}
else
{
keyBytes = Encoding.Default.GetBytes(secretKey);
}

SM4 sm4 = new SM4();
sm4.sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.sm4_crypt_ecb(ctx, Encoding.Default.GetBytes(plainText));

String cipherText = Encoding.Default.GetString(Hex.Encode(encrypted));
return cipherText;
}
///

/// ECB模式解密
///

///
///
public static string Decrypt_ECB(String cipherText)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_DECRYPT;

byte[] keyBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
}
else
{
keyBytes = Encoding.Default.GetBytes(secretKey);
}

SM4 sm4 = new SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
byte[] decrypted = sm4.sm4_crypt_ecb(ctx, Hex.Decode(cipherText));
return Encoding.Default.GetString(decrypted);
}
///

/// CBC模式加密
///

///
///
public static string Encrypt_CBC(String plainText)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_ENCRYPT;

byte[] keyBytes;
byte[] ivBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
ivBytes = Hex.Decode(iv);
}
else
{
keyBytes = Encoding.Default.GetBytes(secretKey);
ivBytes = Encoding.Default.GetBytes(iv);
}

SM4 sm4 = new SM4();
sm4.sm4_setkey_enc(ctx, keyBytes);
byte[] encrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, Encoding.Default.GetBytes(plainText));

String cipherText = Encoding.Default.GetString(Hex.Encode(encrypted));
return cipherText;
}
///

/// CBC模式解密
///

///
///
public static string Decrypt_CBC(String cipherText)
{
SM4_Context ctx = new SM4_Context();
ctx.isPadding = true;
ctx.mode = SM4.SM4_DECRYPT;

byte[] keyBytes;
byte[] ivBytes;
if (hexString)
{
keyBytes = Hex.Decode(secretKey);
ivBytes = Hex.Decode(iv);
}
else
{
keyBytes = Encoding.Default.GetBytes(secretKey);
ivBytes = Encoding.Default.GetBytes(iv);
}

SM4 sm4 = new SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
byte[] decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, Hex.Decode(cipherText));
return Encoding.Default.GetString(decrypted);
}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Org.BouncyCastle.Utilities.Encoders;

namespace ConsoleApplication1
{
public class Program
{
public static void Main(string[] args)
{
Console.WriteLine("***************SM2*************************");

SM2();

Console.WriteLine("***************SM4*************************");

SM4();
Console.ReadLine();
}

public static void SM2()
{
string plainText = "ababcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcc";

//随机生成私公钥
//SM2Utils.GenerateKeyPair();

byte[] sourceData = Encoding.Default.GetBytes(plainText);

//下面的秘钥可以使用generateKeyPair()生成的秘钥内容
// 国密规范正式私钥
String prik = "3690655E33D5EA3D9A4AE1A1ADD766FDEA045CDEAA43A9206FB8C430CEFE0D94";
// 国密规范正式公钥
String pubk = "04F6E0C3345AE42B51E06BF50B98834988D54EBC7460FE135A48171BC0629EAE205EEDE253A530608178A98F1E19BB737302813BA39ED3FA3C51639D7A20C7391A";

Console.WriteLine("加密: ");
String cipherText = SM2Utils.Encrypt(Hex.Decode(pubk), sourceData);
Console.WriteLine(cipherText);
Console.WriteLine("解密: ");
plainText = Encoding.Default.GetString(SM2Utils.Decrypt(Hex.Decode(prik), Hex.Decode(cipherText)));
Console.WriteLine(plainText);

}

public static void SM4()
{
string plainText = "ababcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcc";
Console.WriteLine("ECB模式");
String cipherText = SM4Utils.Encrypt_ECB(plainText);
Console.WriteLine("密文: " + cipherText);
Console.WriteLine("");

plainText = SM4Utils.Decrypt_ECB(cipherText);
Console.WriteLine("明文: " + plainText);
Console.WriteLine("");

Console.WriteLine("CBC模式");
cipherText = SM4Utils.Encrypt_CBC(plainText);
Console.WriteLine("密文: " + cipherText);
Console.WriteLine("");

plainText = SM4Utils.Decrypt_CBC(cipherText);
Console.WriteLine("明文: " + plainText);

}
}
}

其中最新版dll有改动之处
引用:https://blog.csdn.net/ererfei/article/details/50999820

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