java+sm4+加密算法_SM4加密算法实现Java和C#相互加密解密

java+sm4+加密算法_SM4加密算法实现Java和C#相互加密解密SM4加密算法实现Java和C#相互加密解密近期由于项目需要使用SM4对数据进行加密,然后传给Java后台,Java后台使用的也是SM4的加密算法但是就是解密不正确,经过一步步调试发现Java中好多数据类型与C#的相同的数据类型是存在不同的比如:byte在Java中范围是-127~128,而C#中的范围是0~255,这就导致使用C#的加密的明文产生的密文到Java中解密不正确。再一次偶尔的上网中看…

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SM4加密算法实现Java和C#相互加密解密

近期由于项目需要使用SM4对数据进行加密,然后传给Java后台,Java后台使用的也是SM4的加密算法但是就是解密不正确,经过一步步调试发现Java中好多数据类型与C#的相同的数据类型是存在不同的比如:byte在Java中范围是-127~128,而C#中的范围是0~255,这就导致使用C#的加密的明文产生的密文到Java中解密不正确。再一次偶尔的上网中看到了这篇文章 https://www.cnblogs.com/wyongbo/p/jnaTest.html,个人做了个例子果然可以,哎哎哎发现了新大陆,哈哈哈哈^_^,然后就按照这个思路,既然C#和Java之间不能相互加密解密,那就让他们使用同一个语言进行加密解密,就是加密和解密都是用C#就可以完美的解决了。

C#SM4加密代码

下面详细解释各个类。首先以管理员打开VS(我使用的是VS2015),首先要下载一个dll包——BouncyCastle.Crypto.dll,并将此dll引用到项目中

0f691c9b2c5156fbf0a7560d8e7971ae.png

Sm4类代码如下:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace SM4

{

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) << 8) | (long)(b[i + 3] & 0xff) & 0xffffffffL;

return n;

}

private void PUT_ULONG_BE(long n, byte[] b, int i)

{

b[i] = (byte)(int)(0xFF & n >> 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) << n;

}

private long ROTL(long x, int n)

{

return SHL(x, n) | x >> (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(Sm4Context ctx, byte[] key)

{

ctx.mode = SM4_ENCRYPT;

sm4_setkey(ctx.sk, key);

}

public void sm4_setkey_dec(Sm4Context ctx, byte[] key)

{

int i = 0;

ctx.mode = SM4_DECRYPT;

sm4_setkey(ctx.sk, key);

for (i = 0; i < 16; i++)

{

SWAP(ctx.sk, i);

}

}

public byte[] sm4_crypt_ecb(Sm4Context ctx, byte[] input)

{

if ((ctx.isPadding) && (ctx.mode == SM4_ENCRYPT))

{

input = padding(input, SM4_ENCRYPT);

}

int length = input.Length;

byte[] bins = new byte[length];

Array.Copy(input, 0, bins, 0, length);

byte[] bous = new byte[length];

for (int i = 0; length > 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(Sm4Context 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, i * 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 < 16; k++)

{

bousList.Add(out1[k]);

}

}

}

else

{

byte[] temp = new byte[16];

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, i * 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();

}

}

}

}

Sm4Context类如下:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace SM4

{

public class Sm4Context

{

public int mode;

public long[] sk;

public bool isPadding;

public Sm4Context()

{

this.mode = 1;

this.isPadding = true;

this.sk = new long[32];

}

}

}

MainSm4类是SM4的访问函数如下

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Org.BouncyCastle.Utilities.Encoders;

namespace SM4

{

public class MainSm4

{

///

/// 加密ECB模式

///

/// 密钥

/// 明文是否是十六进制

/// 明文

/// 返回密文

public String Encrypt_ECB(String secretKey,bool hexString, String plainText)

{

Sm4Context ctx = new Sm4Context();

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;

}

///

/// 解密ECB模式

///

/// 密钥

/// 明文是否是十六进制

/// 密文

/// 返回明文

public String Decrypt_ECB(String secretKey, bool hexString, String cipherText)

{

Sm4Context ctx = new Sm4Context();

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);

}

///

/// 加密CBC模式

///

/// 密钥

/// 明文是否是十六进制

///

/// 明文

/// 返回密文

public String Encrypt_CBC(String secretKey, bool hexString,string iv, String plainText)

{

Sm4Context ctx = new Sm4Context();

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;

}

///

/// 解密CBC模式

///

/// 密钥

/// 明文是否是十六进制

///

/// 密文

/// 返回明文

public String Decrypt_CBC(String secretKey, bool hexString, string iv, String cipherText)

{

Sm4Context ctx = new Sm4Context();

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);

}

}

}

设置一下项目,项目右击点属性,

67b77246ab514691a78f870ad62a271f.png

5fc475f659723f3d3b0132386e2171f8.png

c72586be879da9c94c4bf79fc41bb363.png

然后编译项目。

下面是C++的项目

38038b3e3d414e903c8e1640096374e4.png

创建C++项目(我的项目名和这个不一样)

7db70e979ef5f2ac0f69a2f94f4037a3.png

65840ec67804d1405c47c50edc0b778a.png

C++项目添加引用C#项目。新建源文件 main.cpp,代码如下

/**********************************

2017-9-5 21:02:51

声明需要被java调用的方法,该方法和java接口内部方法保持一致

预处理语句目的是暴露函数供外部调用。

************************/

#ifdef MYLIBAPI

#else

#define  MYLIBAPI  extern “C” __declspec(dllimport)

#endif

//添加函数声明

MYLIBAPI char* Encrypt_ECB(char* secretKey, int hexString, char* plainText);

MYLIBAPI char* Decrypt_ECB(char* secretKey, int hexString, char* cipherText);

MYLIBAPI char* Encrypt_CBC(char* secretKey, int hexString, char* iv, char* plainText);

MYLIBAPI char* Decrypt_CBC(char* secretKey, int hexString, char* iv, char* cipherText);

using namespace System;

using namespace SM4;

//using namespace System::Runtime::InteropServices::m

char* Encrypt_ECB(char* secretKey, int hexString, char* plainText)

{

String ^ secretKeyStr = gcnew String(secretKey);

String ^ plainTextStr = gcnew String(plainText);

MainSm4 ^mainsm = gcnew MainSm4();

String ^resultString = mainsm->Encrypt_ECB(secretKeyStr, hexString, plainTextStr);

char* result = (char*)(void*)System::Runtime::InteropServices::Marshal::StringToCoTaskMemAnsi(resultString);

return result;

}

char* Decrypt_ECB(char* secretKey, int hexString, char* cipherText)

{

String ^ secretKeyStr = gcnew String(secretKey);

String ^ cipherTextStr = gcnew String(cipherText);

MainSm4 ^mainsm = gcnew MainSm4();

String ^resultString = mainsm->Decrypt_ECB(secretKeyStr, hexString, cipherTextStr);

char* result = (char*)(void*)System::Runtime::InteropServices::Marshal::StringToCoTaskMemAnsi(resultString);

return result;

}

char* Encrypt_CBC(char* secretKey, int hexString, char* iv, char* plainText)

{

String ^ secretKeyStr = gcnew String(secretKey);

String ^ ivStr = gcnew String(iv);

String ^ plainTextStr = gcnew String(plainText);

MainSm4 ^mainsm = gcnew MainSm4();

String ^resultString = mainsm->Encrypt_CBC(secretKeyStr, hexString, ivStr, plainTextStr);

char* result = (char*)(void*)System::Runtime::InteropServices::Marshal::StringToCoTaskMemAnsi(resultString);

return result;

}

char* Decrypt_CBC(char* secretKey, int hexString, char* iv, char* cipherText)

{

String ^ secretKeyStr = gcnew String(secretKey);

String ^ ivStr = gcnew String(iv);

String ^ cipherTextStr = gcnew String(cipherText);

MainSm4 ^mainsm = gcnew MainSm4();

String ^resultString = mainsm->Decrypt_CBC(secretKeyStr, hexString, ivStr, cipherTextStr);

char* result = (char*)(void*)System::Runtime::InteropServices::Marshal::StringToCoTaskMemAnsi(resultString);

return result;

}

C++项目设置右击属性

a6bcbd53d88976ac7b4fb52cb72ae142.png

a204cbb7162408b954ec8243558e3cea.png

a5be3bc9fd599a385610626adc5ae68c.png

下面开始Java项目

b94fd526c77f8b7e1ca878916d7e7aa7.png

Java项目中要用到 jna的包和jna-platform的包下载地址:https://github.com/java-native-access/jna

新建Java空项目,在src中添加package:com.xxx.test,然后再包中添加 class文件

CLibray1如下:

package com.javaInvokeCsharp.test;

import com.sun.jna.Library;

import com.sun.jna.Native;

/***@ClassName:Clibrary*@Description:TODO*@Author:MiaoZi*@Date:2018-05-14下午 07:01*@Version:1.0**/interface CLibrary1 extends Library {

//路径为C++的Dll路径

CLibrary1 INSTANCE= (CLibrary1) Native.

loadLibrary(“D:\\译会C#\\JavaInvokeSm4\\SM4CPP\\Debug\\SM4CPP”,

CLibrary1.class);

/*需要调用的方法,方法名与c++方法名相同*/

String Encrypt_ECB(String secretKey,boolean hexString, String plainText);

String Decrypt_ECB(String secretKey, boolean hexString, String cipherText);

String Encrypt_CBC(String secretKey, boolean hexString,String iv, String plainText);

String Decrypt_CBC(String secretKey, boolean hexString, String iv, String cipherText);

}

InvokeTest.Java如下:

package com.javaInvokeCsharp.test;

import com.sun.jna.Library;

import com.sun.jna.Native;

import java.util.*;

/***@ClassName:InvokeTest*@Description:TODO*@Author:MiaoZi*@Date:2018-05-14下午 06:59*@Version:1.0* 需要引入jna-4.4.0.jar 和 jna-platform-4.4.0* 包下载地址:https://github.com/java-native-access/jna**/class InvokeTest {

/*** 调用示例*@paramargs*@throwsException*/public static void main(String[] args) throws Exception

{

System.out.println(System.getProperty(“java.version”));//输出当前jdk版本号

System.out.println(System.getProperty(“sun.arch.data.model”));//输出当前jdk所用平台

CLibrary1 clib = CLibrary1.INSTANCE;

//秘钥

String secretKey=”6228480038286822978″;

boolean hexString=false;

// 要加密的内容

String plainText=”123456″;

String iv=”0000000000000000″;

//解密的明文

String cipherText;

while (true) {

Scanner sc = new Scanner(System.in);

System.out.println(“请输入密码:”);

plainText = sc.next();

System.out.println(“明文:” + plainText);

cipherText = clib.Encrypt_ECB(secretKey, hexString, plainText);

System.out.println(“加密密文:” + cipherText);

System.out.println(“请输入密文:”);

cipherText = sc.next();

plainText = “”;

plainText = clib.Decrypt_ECB(secretKey, hexString, cipherText);

System.out.println(“解密明文:” + plainText);

System.out.println( new String(plainText.getBytes(),”ASCII”));

}

//System.out.println(“测试返回结果:”+cipherText);

}

}

01b2d26bee6cdfbac33a33e73acc2cf7.png

OK完美实现Java和C#的SM4加密解密问题。

问题:

大家运行到这里应该会出错,因为Java可以找到C++的dll,到时没有找到C#的++,怎么办呢,我们需要把C#的Debug目录下的这两个文件拷贝到jak的bin目录里。然后再试一下,就OK啦

12e4bbe2b61a5c14dcf15db0c3c6fc88.png

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