SM Java实现

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【摘要】

本文主要讲解“国密加密算法”SM系列的Java实现方法,不涉及具体的算法剖析,在网络上找到的java实现方法比较少,切在跨语言加密解密上会存在一些问题,所以整理此文志之。

源码下载地址http://download.csdn.net/detail/ererfei/9474502 需要C#实现SM系列算法源码的可以评论留邮箱地址,看到后发送

1.SM2 & SM3

由于SM2算法中需要使用SM3摘要算法,所以把他们放在一起

项目目录结构如下:


首先要下载一个jar包——bcprov-jdk.jar,可以到maven库中下载最新版http://central.maven.org/maven2/org/bouncycastle/并将该jar包引入项目的classpath。实现代码如下(每个工具类都有Main可以运行测试):

a.      SM2主类

【SM2.java】

 

package com.mlq.sm;import java.math.BigInteger;import java.security.SecureRandom;import org.bouncycastle.crypto.generators.ECKeyPairGenerator;import org.bouncycastle.crypto.params.ECDomainParameters;import org.bouncycastle.crypto.params.ECKeyGenerationParameters;import org.bouncycastle.math.ec.ECCurve;import org.bouncycastle.math.ec.ECFieldElement;import org.bouncycastle.math.ec.ECPoint;import org.bouncycastle.math.ec.ECFieldElement.Fp;public class SM2 {//测试参数//public static final String[] ecc_param = {//    "8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", //    "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", //    "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", //    "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", //    "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", //    "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2" //};//正式参数public static String[] ecc_param = { "FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF","FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC","28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93","FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123","32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7","BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0"};public static SM2 Instance() {return new SM2();}public final BigInteger ecc_p;public final BigInteger ecc_a;public final BigInteger ecc_b;public final BigInteger ecc_n;public final BigInteger ecc_gx;public final BigInteger ecc_gy;public final ECCurve ecc_curve;public final ECPoint ecc_point_g;public final ECDomainParameters ecc_bc_spec;public final ECKeyPairGenerator ecc_key_pair_generator;public final ECFieldElement ecc_gx_fieldelement;public final ECFieldElement ecc_gy_fieldelement;public SM2() {this.ecc_p = new BigInteger(ecc_param[0], 16);this.ecc_a = new BigInteger(ecc_param[1], 16);this.ecc_b = new BigInteger(ecc_param[2], 16);this.ecc_n = new BigInteger(ecc_param[3], 16);this.ecc_gx = new BigInteger(ecc_param[4], 16);this.ecc_gy = new BigInteger(ecc_param[5], 16);this.ecc_gx_fieldelement = new Fp(this.ecc_p, this.ecc_gx);this.ecc_gy_fieldelement = new Fp(this.ecc_p, this.ecc_gy);this.ecc_curve = new ECCurve.Fp(this.ecc_p, this.ecc_a, this.ecc_b);this.ecc_point_g = new ECPoint.Fp(this.ecc_curve, this.ecc_gx_fieldelement, this.ecc_gy_fieldelement);this.ecc_bc_spec = new ECDomainParameters(this.ecc_curve, this.ecc_point_g, this.ecc_n);ECKeyGenerationParameters ecc_ecgenparam;ecc_ecgenparam = new ECKeyGenerationParameters(this.ecc_bc_spec, new SecureRandom());this.ecc_key_pair_generator = new ECKeyPairGenerator();this.ecc_key_pair_generator.init(ecc_ecgenparam);}}

b.      SM2工具类

【SM2Utils.java】

 

package com.mlq.sm;import java.io.IOException;import java.math.BigInteger;import org.bouncycastle.crypto.AsymmetricCipherKeyPair;import org.bouncycastle.crypto.params.ECPrivateKeyParameters;import org.bouncycastle.crypto.params.ECPublicKeyParameters;import org.bouncycastle.math.ec.ECPoint;public class SM2Utils {//生成随机秘钥对public static void generateKeyPair(){SM2 sm2 = SM2.Instance();AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.generateKeyPair();ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters) key.getPrivate();ECPublicKeyParameters ecpub = (ECPublicKeyParameters) key.getPublic();BigInteger privateKey = ecpriv.getD();ECPoint publicKey = ecpub.getQ();System.out.println("公钥: " + Util.byteToHex(publicKey.getEncoded()));System.out.println("私钥: " + Util.byteToHex(privateKey.toByteArray()));}//数据加密public static String encrypt(byte[] publicKey, byte[] data) throws IOException{if (publicKey == null || publicKey.length == 0){return null;}if (data == null || data.length == 0){return null;}byte[] source = new byte[data.length];System.arraycopy(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);//System.out.println("C1 " + Util.byteToHex(c1.getEncoded()));//System.out.println("C2 " + Util.byteToHex(source));//System.out.println("C3 " + Util.byteToHex(c3));//C1 C2 C3拼装成加密字串return Util.byteToHex(c1.getEncoded()) + Util.byteToHex(source) + Util.byteToHex(c3);}//数据解密public static byte[] decrypt(byte[] privateKey, byte[] encryptedData) throws IOException{if (privateKey == null || privateKey.length == 0){return null;}if (encryptedData == null || encryptedData.length == 0){return null;}//加密字节数组转换为十六进制的字符串 长度变为encryptedData.length * 2String data = Util.byteToHex(encryptedData);/***分解加密字串 * (C1 = C1标志位2位 + C1实体部分128位 = 130) * (C3 = C3实体部分64位  = 64) * (C2 = encryptedData.length * 2 - C1长度  - C2长度) */byte[] c1Bytes = Util.hexToByte(data.substring(0,130));int c2Len = encryptedData.length - 97;byte[] c2 = Util.hexToByte(data.substring(130,130 + 2 * c2Len));byte[] c3 = Util.hexToByte(data.substring(130 + 2 * c2Len,194 + 2 * c2Len));SM2 sm2 = SM2.Instance();BigInteger userD = new BigInteger(1, privateKey);//通过C1实体字节来生成ECPointECPoint c1 = sm2.ecc_curve.decodePoint(c1Bytes);Cipher cipher = new Cipher();cipher.Init_dec(userD, c1);cipher.Decrypt(c2);cipher.Dofinal(c3);//返回解密结果return c2;}public static void main(String[] args) throws Exception {//生成密钥对generateKeyPair();String plainText = "ererfeiisgod";byte[] sourceData = plainText.getBytes();//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.out.println("加密: ");String cipherText = SM2Utils.encrypt(Util.hexToByte(pubk), sourceData);System.out.println(cipherText);System.out.println("解密: ");plainText = new String(SM2Utils.decrypt(Util.hexToByte(prik), Util.hexToByte(cipherText)));System.out.println(plainText);}}

c.      SM3主类

【SM3.java】

 

package com.mlq.sm;public class SM3 {public static final byte[] iv = { 0x73, (byte) 0x80, 0x16, 0x6f, 0x49,0x14, (byte) 0xb2, (byte) 0xb9, 0x17, 0x24, 0x42, (byte) 0xd7,(byte) 0xda, (byte) 0x8a, 0x06, 0x00, (byte) 0xa9, 0x6f, 0x30,(byte) 0xbc, (byte) 0x16, 0x31, 0x38, (byte) 0xaa, (byte) 0xe3,(byte) 0x8d, (byte) 0xee, 0x4d, (byte) 0xb0, (byte) 0xfb, 0x0e,0x4e };public static int[] Tj = new int[64];static {for (int i = 0; i < 16; i++) {Tj[i] = 0x79cc4519;}for (int i = 16; i < 64; i++) {Tj[i] = 0x7a879d8a;}}public static byte[] CF(byte[] V, byte[] B) {int[] v, b;v = convert(V);b = convert(B);return convert(CF(v, b));}private static int[] convert(byte[] arr){int[] out = new int[arr.length / 4];byte[] tmp = new byte[4];for (int i = 0; i < arr.length; i += 4) {System.arraycopy(arr, i, tmp, 0, 4);out[i / 4] = bigEndianByteToInt(tmp);}return out;}private static byte[] convert(int[] arr) {byte[] out = new byte[arr.length * 4];byte[] tmp = null;for (int i = 0; i < arr.length; i++) {tmp = bigEndianIntToByte(arr[i]);System.arraycopy(tmp, 0, out, i * 4, 4);}return out;}public static int[] CF(int[] V, int[] B) {int a, b, c, d, e, f, g, h;int ss1, ss2, tt1, tt2;a = V[0];b = V[1];c = V[2];d = V[3];e = V[4];f = V[5];g = V[6];h = V[7];int[][] arr = expand(B);int[] w = arr[0];int[] w1 = arr[1];for (int j = 0; j < 64; j++){ss1 = (bitCycleLeft(a, 12) + e + bitCycleLeft(Tj[j], j));ss1 = bitCycleLeft(ss1, 7);ss2 = ss1 ^ bitCycleLeft(a, 12);tt1 = FFj(a, b, c, j) + d + ss2 + w1[j];tt2 = GGj(e, f, g, j) + h + ss1 + w[j];d = c;c = bitCycleLeft(b, 9);b = a;a = tt1;h = g;g = bitCycleLeft(f, 19);f = e;e = P0(tt2);/*System.out.print(j+" ");System.out.print(Integer.toHexString(a)+" ");System.out.print(Integer.toHexString(b)+" ");System.out.print(Integer.toHexString(c)+" ");System.out.print(Integer.toHexString(d)+" ");System.out.print(Integer.toHexString(e)+" ");System.out.print(Integer.toHexString(f)+" ");System.out.print(Integer.toHexString(g)+" ");System.out.print(Integer.toHexString(h)+" ");System.out.println("");*/}//System.out.println("");int[] out = new int[8];out[0] = a ^ V[0];out[1] = b ^ V[1];out[2] = c ^ V[2];out[3] = d ^ V[3];out[4] = e ^ V[4];out[5] = f ^ V[5];out[6] = g ^ V[6];out[7] = h ^ V[7];return out;}private static int[][] expand(int[] B) {int W[] = new int[68];int W1[] = new int[64];for (int i = 0; i < B.length; i++){W[i] = B[i];}for (int i = 16; i < 68; i++) {W[i] = P1(W[i - 16] ^ W[i - 9] ^ bitCycleLeft(W[i - 3], 15))^ bitCycleLeft(W[i - 13], 7) ^ W[i - 6];}for (int i = 0; i < 64; i++) {W1[i] = W[i] ^ W[i + 4];}int arr[][] = new int[][] { W, W1 };return arr;}private static byte[] bigEndianIntToByte(int num) {return back(Util.intToBytes(num));}private static int bigEndianByteToInt(byte[] bytes){return Util.byteToInt(back(bytes));}private static int FFj(int X, int Y, int Z, int j) {if (j >= 0 && j <= 15) {return FF1j(X, Y, Z);}else {return FF2j(X, Y, Z);}}private static int GGj(int X, int Y, int Z, int j) {if (j >= 0 && j <= 15) {return GG1j(X, Y, Z);}else{return GG2j(X, Y, Z);}}// 逻辑位运算函数private static int FF1j(int X, int Y, int Z){int tmp = X ^ Y ^ Z;return tmp;}private static int FF2j(int X, int Y, int Z){int tmp = ((X & Y) | (X & Z) | (Y & Z));return tmp;}private static int GG1j(int X, int Y, int Z) {int tmp = X ^ Y ^ Z;return tmp;}private static int GG2j(int X, int Y, int Z) {int tmp = (X & Y) | (~X & Z);return tmp;}private static int P0(int X) {int y = rotateLeft(X, 9);y = bitCycleLeft(X, 9);int z = rotateLeft(X, 17);z = bitCycleLeft(X, 17);int t = X ^ y ^ z;return t;}private static int P1(int X) {int t = X ^ bitCycleLeft(X, 15) ^ bitCycleLeft(X, 23);return t;}/** * 对最后一个分组字节数据padding *  * @param in * @param bLen *            分组个数 * @return */public static byte[] padding(byte[] in, int bLen){int k = 448 - (8 * in.length + 1) % 512;if (k < 0) {k = 960 - (8 * in.length + 1) % 512;}k += 1;byte[] padd = new byte[k / 8];padd[0] = (byte) 0x80;long n = in.length * 8 + bLen * 512;byte[] out = new byte[in.length + k / 8 + 64 / 8];int pos = 0;System.arraycopy(in, 0, out, 0, in.length);pos += in.length;System.arraycopy(padd, 0, out, pos, padd.length);pos += padd.length;byte[] tmp = back(Util.longToBytes(n));System.arraycopy(tmp, 0, out, pos, tmp.length);return out;}/** * 字节数组逆序 *  * @param in * @return */private static byte[] back(byte[] in) {byte[] out = new byte[in.length];for (int i = 0; i < out.length; i++) {out[i] = in[out.length - i - 1];}return out;}public static int rotateLeft(int x, int n) {return (x << n) | (x >> (32 - n));}private static int bitCycleLeft(int n, int bitLen) {bitLen %= 32;byte[] tmp = bigEndianIntToByte(n);int byteLen = bitLen / 8;int len = bitLen % 8;if (byteLen > 0){tmp = byteCycleLeft(tmp, byteLen);}if (len > 0) {tmp = bitSmall8CycleLeft(tmp, len);}return bigEndianByteToInt(tmp);}private static byte[] bitSmall8CycleLeft(byte[] in, int len) {byte[] tmp = new byte[in.length];int t1, t2, t3;for (int i = 0; i < tmp.length; i++){t1 = (byte) ((in[i] & 0x000000ff) << len);t2 = (byte) ((in[(i + 1) % tmp.length] & 0x000000ff) >> (8 - len));t3 = (byte) (t1 | t2);tmp[i] = (byte) t3;}return tmp;}private static byte[] byteCycleLeft(byte[] in, int byteLen) {byte[] tmp = new byte[in.length];System.arraycopy(in, byteLen, tmp, 0, in.length - byteLen);System.arraycopy(in, 0, tmp, in.length - byteLen, byteLen);return tmp;}}

d.      SM3工具类

【SM3Digest.java】

 

package com.mlq.sm;import org.bouncycastle.util.encoders.Hex;public class SM3Digest{/** SM3值的长度 */private static final int BYTE_LENGTH = 32;/** SM3分组长度 */private static final int BLOCK_LENGTH = 64;/** 缓冲区长度 */private static final int BUFFER_LENGTH = BLOCK_LENGTH * 1;/** 缓冲区 */private byte[] xBuf = new byte[BUFFER_LENGTH];/** 缓冲区偏移量 */private int xBufOff;/** 初始向量 */private byte[] V = SM3.iv.clone();private int cntBlock = 0;public SM3Digest() {}public SM3Digest(SM3Digest t){System.arraycopy(t.xBuf, 0, this.xBuf, 0, t.xBuf.length);this.xBufOff = t.xBufOff;System.arraycopy(t.V, 0, this.V, 0, t.V.length);}/** * SM3结果输出 *  * @param out 保存SM3结构的缓冲区 * @param outOff 缓冲区偏移量 * @return */public int doFinal(byte[] out, int outOff) {byte[] tmp = doFinal();System.arraycopy(tmp, 0, out, 0, tmp.length);return BYTE_LENGTH;}public void reset() {xBufOff = 0;cntBlock = 0;V = SM3.iv.clone();}/** * 明文输入 *  * @param in *            明文输入缓冲区 * @param inOff *            缓冲区偏移量 * @param len *            明文长度 */public void update(byte[] in, int inOff, int len){int partLen = BUFFER_LENGTH - xBufOff;int inputLen = len;int dPos = inOff;if (partLen < inputLen) {System.arraycopy(in, dPos, xBuf, xBufOff, partLen);inputLen -= partLen;dPos += partLen;doUpdate();while (inputLen > BUFFER_LENGTH) {System.arraycopy(in, dPos, xBuf, 0, BUFFER_LENGTH);inputLen -= BUFFER_LENGTH;dPos += BUFFER_LENGTH;doUpdate();}}System.arraycopy(in, dPos, xBuf, xBufOff, inputLen);xBufOff += inputLen;}private void doUpdate() {byte[] B = new byte[BLOCK_LENGTH];for (int i = 0; i < BUFFER_LENGTH; i += BLOCK_LENGTH) {System.arraycopy(xBuf, i, B, 0, B.length);doHash(B);}xBufOff = 0;}private void doHash(byte[] B){byte[] tmp = SM3.CF(V, B);System.arraycopy(tmp, 0, V, 0, V.length);cntBlock++;}private byte[] doFinal() {byte[] B = new byte[BLOCK_LENGTH];byte[] buffer = new byte[xBufOff];System.arraycopy(xBuf, 0, buffer, 0, buffer.length);byte[] tmp = SM3.padding(buffer, cntBlock);for (int i = 0; i < tmp.length; i += BLOCK_LENGTH){System.arraycopy(tmp, i, B, 0, B.length);doHash(B);}return V;}public void update(byte in) {byte[] buffer = new byte[] { in };update(buffer, 0, 1);}public int getDigestSize() {return BYTE_LENGTH;}public static void main(String[] args) {byte[] md = new byte[32];byte[] msg1 = "ererfeiisgod".getBytes();SM3Digest sm3 = new SM3Digest();sm3.update(msg1, 0, msg1.length);sm3.doFinal(md, 0);String s = new String(Hex.encode(md));System.out.println(s.toUpperCase());}}

e.      工具类

【Util.java】

package com.mlq.sm;import java.math.BigInteger;public class Util {/** * 整形转换成网络传输的字节流(字节数组)型数据 *  * @param num 一个整型数据 * @return 4个字节的自己数组 */public static byte[] intToBytes(int num){byte[] bytes = new byte[4];bytes[0] = (byte) (0xff & (num >> 0));bytes[1] = (byte) (0xff & (num >> 8));bytes[2] = (byte) (0xff & (num >> 16));bytes[3] = (byte) (0xff & (num >> 24));return bytes;}/** * 四个字节的字节数据转换成一个整形数据 *  * @param bytes 4个字节的字节数组 * @return 一个整型数据 */public static int byteToInt(byte[] bytes) {int num = 0;int temp;temp = (0x000000ff & (bytes[0])) << 0;num = num | temp;temp = (0x000000ff & (bytes[1])) << 8;num = num | temp;temp = (0x000000ff & (bytes[2])) << 16;num = num | temp;temp = (0x000000ff & (bytes[3])) << 24;num = num | temp;return num;}/** * 长整形转换成网络传输的字节流(字节数组)型数据 *  * @param num 一个长整型数据 * @return 4个字节的自己数组 */public static byte[] longToBytes(long num) {byte[] bytes = new byte[8];for (int i = 0; i < 8; i++) {bytes[i] = (byte) (0xff & (num >> (i * 8)));}return bytes;}/** * 大数字转换字节流(字节数组)型数据 *  * @param n * @return */public static byte[] byteConvert32Bytes(BigInteger n) {byte tmpd[] = (byte[])null;        if(n == null)        {        return null;        }                if(n.toByteArray().length == 33)        {            tmpd = new byte[32];            System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);        }         else if(n.toByteArray().length == 32)        {            tmpd = n.toByteArray();        }         else        {            tmpd = new byte[32];            for(int i = 0; i < 32 - n.toByteArray().length; i++)            {            tmpd[i] = 0;            }            System.arraycopy(n.toByteArray(), 0, tmpd, 32 - n.toByteArray().length, n.toByteArray().length);        }        return tmpd;}/** * 换字节流(字节数组)型数据转大数字 *  * @param b * @return */public static BigInteger byteConvertInteger(byte[] b){    if (b[0] < 0)    {    byte[] temp = new byte[b.length + 1];    temp[0] = 0;    System.arraycopy(b, 0, temp, 1, b.length);    return new BigInteger(temp);    }    return new BigInteger(b);}/** * 根据字节数组获得值(十六进制数字) *  * @param bytes * @return */public static String getHexString(byte[] bytes) {return getHexString(bytes, true);}/** * 根据字节数组获得值(十六进制数字) *  * @param bytes * @param upperCase * @return */public static String getHexString(byte[] bytes, boolean upperCase) {String ret = "";for (int i = 0; i < bytes.length; i++) {ret += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);}return upperCase ? ret.toUpperCase() : ret;}/** * 打印十六进制字符串 *  * @param bytes */public static void printHexString(byte[] bytes) {for (int i = 0; i < bytes.length; i++) {String hex = Integer.toHexString(bytes[i] & 0xFF);if (hex.length() == 1) {hex = '0' + hex;}System.out.print("0x" + hex.toUpperCase() + ",");}System.out.println("");}/** * Convert hex string to byte[] *  * @param hexString *            the hex string * @return byte[] */public static byte[] hexStringToBytes(String hexString) {if (hexString == null || hexString.equals("")) {return null;}hexString = hexString.toUpperCase();int length = hexString.length() / 2;char[] hexChars = hexString.toCharArray();byte[] d = new byte[length];for (int i = 0; i < length; i++) {int pos = i * 2;d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));}return d;}/** * Convert char to byte *  * @param c *            char * @return byte */public static byte charToByte(char c) {return (byte) "0123456789ABCDEF".indexOf(c);}/**     * 用于建立十六进制字符的输出的小写字符数组     */    private static final char[] DIGITS_LOWER = {'0', '1', '2', '3', '4', '5',            '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};     /**     * 用于建立十六进制字符的输出的大写字符数组     */    private static final char[] DIGITS_UPPER = {'0', '1', '2', '3', '4', '5',            '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};     /**     * 将字节数组转换为十六进制字符数组     *     * @param data byte[]     * @return 十六进制char[]     */    public static char[] encodeHex(byte[] data) {        return encodeHex(data, true);    }     /**     * 将字节数组转换为十六进制字符数组     *     * @param data        byte[]     * @param toLowerCase <code>true</code> 传换成小写格式 , <code>false</code> 传换成大写格式     * @return 十六进制char[]     */    public static char[] encodeHex(byte[] data, boolean toLowerCase) {        return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);    }     /**     * 将字节数组转换为十六进制字符数组     *     * @param data     byte[]     * @param toDigits 用于控制输出的char[]     * @return 十六进制char[]     */    protected static char[] encodeHex(byte[] data, char[] toDigits) {        int l = data.length;        char[] out = new char[l << 1];        // two characters form the hex value.        for (int i = 0, j = 0; i < l; i++) {            out[j++] = toDigits[(0xF0 & data[i]) >>> 4];            out[j++] = toDigits[0x0F & data[i]];        }        return out;    }     /**     * 将字节数组转换为十六进制字符串     *     * @param data byte[]     * @return 十六进制String     */    public static String encodeHexString(byte[] data) {        return encodeHexString(data, true);    }     /**     * 将字节数组转换为十六进制字符串     *     * @param data        byte[]     * @param toLowerCase <code>true</code> 传换成小写格式 , <code>false</code> 传换成大写格式     * @return 十六进制String     */    public static String encodeHexString(byte[] data, boolean toLowerCase) {        return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);    }     /**     * 将字节数组转换为十六进制字符串     *     * @param data     byte[]     * @param toDigits 用于控制输出的char[]     * @return 十六进制String     */    protected static String encodeHexString(byte[] data, char[] toDigits) {        return new String(encodeHex(data, toDigits));    }     /**     * 将十六进制字符数组转换为字节数组     *     * @param data 十六进制char[]     * @return byte[]     * @throws RuntimeException 如果源十六进制字符数组是一个奇怪的长度,将抛出运行时异常     */    public static byte[] decodeHex(char[] data) {        int len = data.length;         if ((len & 0x01) != 0) {            throw new RuntimeException("Odd number of characters.");        }         byte[] out = new byte[len >> 1];         // two characters form the hex value.        for (int i = 0, j = 0; j < len; i++) {            int f = toDigit(data[j], j) << 4;            j++;            f = f | toDigit(data[j], j);            j++;            out[i] = (byte) (f & 0xFF);        }         return out;    }     /**     * 将十六进制字符转换成一个整数     *     * @param ch    十六进制char     * @param index 十六进制字符在字符数组中的位置     * @return 一个整数     * @throws RuntimeException 当ch不是一个合法的十六进制字符时,抛出运行时异常     */    protected static int toDigit(char ch, int index) {        int digit = Character.digit(ch, 16);        if (digit == -1) {            throw new RuntimeException("Illegal hexadecimal character " + ch                    + " at index " + index);        }        return digit;    }     /**     * 数字字符串转ASCII码字符串     *      * @param String     *            字符串     * @return ASCII字符串     */    public static String StringToAsciiString(String content) {        String result = "";        int max = content.length();        for (int i = 0; i < max; i++) {            char c = content.charAt(i);            String b = Integer.toHexString(c);            result = result + b;        }        return result;    }        /**     * 十六进制转字符串     *      * @param hexString     *            十六进制字符串     * @param encodeType     *            编码类型4:Unicode,2:普通编码     * @return 字符串     */    public static String hexStringToString(String hexString, int encodeType) {        String result = "";        int max = hexString.length() / encodeType;        for (int i = 0; i < max; i++) {            char c = (char) hexStringToAlgorism(hexString                    .substring(i * encodeType, (i + 1) * encodeType));            result += c;        }        return result;    }        /**     * 十六进制字符串装十进制     *      * @param hex     *            十六进制字符串     * @return 十进制数值     */    public static int hexStringToAlgorism(String hex) {        hex = hex.toUpperCase();        int max = hex.length();        int result = 0;        for (int i = max; i > 0; i--) {            char c = hex.charAt(i - 1);            int algorism = 0;            if (c >= '0' && c <= '9') {                algorism = c - '0';            } else {                algorism = c - 55;            }            result += Math.pow(16, max - i) * algorism;        }        return result;    }        /**     * 十六转二进制     *      * @param hex     *            十六进制字符串     * @return 二进制字符串     */    public static String hexStringToBinary(String hex) {        hex = hex.toUpperCase();        String result = "";        int max = hex.length();        for (int i = 0; i < max; i++) {            char c = hex.charAt(i);            switch (c) {            case '0':                result += "0000";                break;            case '1':                result += "0001";                break;            case '2':                result += "0010";                break;            case '3':                result += "0011";                break;            case '4':                result += "0100";                break;            case '5':                result += "0101";                break;            case '6':                result += "0110";                break;            case '7':                result += "0111";                break;            case '8':                result += "1000";                break;            case '9':                result += "1001";                break;            case 'A':                result += "1010";                break;            case 'B':                result += "1011";                break;            case 'C':                result += "1100";                break;            case 'D':                result += "1101";                break;            case 'E':                result += "1110";                break;            case 'F':                result += "1111";                break;            }        }        return result;    }        /**     * ASCII码字符串转数字字符串     *      * @param String     *            ASCII字符串     * @return 字符串     */    public static String AsciiStringToString(String content) {        String result = "";        int length = content.length() / 2;        for (int i = 0; i < length; i++) {            String c = content.substring(i * 2, i * 2 + 2);            int a = hexStringToAlgorism(c);            char b = (char) a;            String d = String.valueOf(b);            result += d;        }        return result;    }        /**     * 将十进制转换为指定长度的十六进制字符串     *      * @param algorism     *            int 十进制数字     * @param maxLength     *            int 转换后的十六进制字符串长度     * @return String 转换后的十六进制字符串     */    public static String algorismToHexString(int algorism, int maxLength) {        String result = "";        result = Integer.toHexString(algorism);        if (result.length() % 2 == 1) {            result = "0" + result;        }        return patchHexString(result.toUpperCase(), maxLength);    }        /**     * 字节数组转为普通字符串(ASCII对应的字符)     *      * @param bytearray     *            byte[]     * @return String     */    public static String byteToString(byte[] bytearray) {        String result = "";        char temp;        int length = bytearray.length;        for (int i = 0; i < length; i++) {            temp = (char) bytearray[i];            result += temp;        }        return result;    }        /**     * 二进制字符串转十进制     *      * @param binary     *            二进制字符串     * @return 十进制数值     */    public static int binaryToAlgorism(String binary) {        int max = binary.length();        int result = 0;        for (int i = max; i > 0; i--) {            char c = binary.charAt(i - 1);            int algorism = c - '0';            result += Math.pow(2, max - i) * algorism;        }        return result;    }    /**     * 十进制转换为十六进制字符串     *      * @param algorism     *            int 十进制的数字     * @return String 对应的十六进制字符串     */    public static String algorismToHEXString(int algorism) {        String result = "";        result = Integer.toHexString(algorism);        if (result.length() % 2 == 1) {            result = "0" + result;        }        result = result.toUpperCase();        return result;    }        /**     * HEX字符串前补0,主要用于长度位数不足。     *      * @param str     *            String 需要补充长度的十六进制字符串     * @param maxLength     *            int 补充后十六进制字符串的长度     * @return 补充结果     */    static public String patchHexString(String str, int maxLength) {        String temp = "";        for (int i = 0; i < maxLength - str.length(); i++) {            temp = "0" + temp;        }        str = (temp + str).substring(0, maxLength);        return str;    }        /**     * 将一个字符串转换为int     *      * @param s     *            String 要转换的字符串     * @param defaultInt     *            int 如果出现异常,默认返回的数字     * @param radix     *            int 要转换的字符串是什么进制的,如16 8 10.     * @return int 转换后的数字     */    public static int parseToInt(String s, int defaultInt, int radix) {        int i = 0;        try {            i = Integer.parseInt(s, radix);        } catch (NumberFormatException ex) {            i = defaultInt;        }        return i;    }        /**     * 将一个十进制形式的数字字符串转换为int     *      * @param s     *            String 要转换的字符串     * @param defaultInt     *            int 如果出现异常,默认返回的数字     * @return int 转换后的数字     */    public static int parseToInt(String s, int defaultInt) {        int i = 0;        try {            i = Integer.parseInt(s);        } catch (NumberFormatException ex) {            i = defaultInt;        }        return i;    }        /**     * 十六进制串转化为byte数组     *      * @return the array of byte     */    public static byte[] hexToByte(String hex)            throws IllegalArgumentException {        if (hex.length() % 2 != 0) {            throw new IllegalArgumentException();        }        char[] arr = hex.toCharArray();        byte[] b = new byte[hex.length() / 2];        for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {            String swap = "" + arr[i++] + arr[i];            int byteint = Integer.parseInt(swap, 16) & 0xFF;            b[j] = new Integer(byteint).byteValue();        }        return b;    }        /**     * 字节数组转换为十六进制字符串     *      * @param b     *            byte[] 需要转换的字节数组     * @return String 十六进制字符串     */    public static String byteToHex(byte b[]) {        if (b == null) {            throw new IllegalArgumentException(                    "Argument b ( byte array ) is null! ");        }        String hs = "";        String stmp = "";        for (int n = 0; n < b.length; n++) {            stmp = Integer.toHexString(b[n] & 0xff);            if (stmp.length() == 1) {                hs = hs + "0" + stmp;            } else {                hs = hs + stmp;            }        }        return hs.toUpperCase();    }        public static byte[] subByte(byte[] input, int startIndex, int length) {byte[] bt = new byte[length];for (int i = 0; i < length; i++) {bt[i] = input[i + startIndex];}return bt;    }}

f.     Chiper类

package com.mlq.sm;import java.math.BigInteger;import org.bouncycastle.crypto.AsymmetricCipherKeyPair;import org.bouncycastle.crypto.params.ECPrivateKeyParameters;import org.bouncycastle.crypto.params.ECPublicKeyParameters;import org.bouncycastle.math.ec.ECPoint;public class Cipher {private int ct;private ECPoint p2;private SM3Digest sm3keybase;private SM3Digest sm3c3;private byte key[];private byte keyOff;public Cipher() {this.ct = 1;this.key = new byte[32];this.keyOff = 0;}private void Reset() {this.sm3keybase = new SM3Digest();this.sm3c3 = new SM3Digest();byte p[] = Util.byteConvert32Bytes(p2.getX().toBigInteger());this.sm3keybase.update(p, 0, p.length);this.sm3c3.update(p, 0, p.length);p = Util.byteConvert32Bytes(p2.getY().toBigInteger());this.sm3keybase.update(p, 0, p.length);this.ct = 1;NextKey();}private void NextKey() {SM3Digest sm3keycur = new SM3Digest(this.sm3keybase);sm3keycur.update((byte) (ct >> 24 & 0xff));sm3keycur.update((byte) (ct >> 16 & 0xff));sm3keycur.update((byte) (ct >> 8 & 0xff));sm3keycur.update((byte) (ct & 0xff));sm3keycur.doFinal(key, 0);this.keyOff = 0;this.ct++;}public ECPoint Init_enc(SM2 sm2, ECPoint userKey) {AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.generateKeyPair();ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters) key.getPrivate();ECPublicKeyParameters ecpub = (ECPublicKeyParameters) key.getPublic();BigInteger k = ecpriv.getD();ECPoint c1 = ecpub.getQ();this.p2 = userKey.multiply(k);Reset();return c1;}public void Encrypt(byte data[]) {this.sm3c3.update(data, 0, data.length);for (int i = 0; i < data.length; i++) {if (keyOff == key.length){NextKey();}data[i] ^= key[keyOff++];}}public void Init_dec(BigInteger userD, ECPoint c1){this.p2 = c1.multiply(userD);Reset();}public void Decrypt(byte data[]) {for (int i = 0; i < data.length; i++){if (keyOff == key.length){NextKey();}data[i] ^= key[keyOff++];}this.sm3c3.update(data, 0, data.length);}public void Dofinal(byte c3[]) {byte p[] = Util.byteConvert32Bytes(p2.getY().toBigInteger());this.sm3c3.update(p, 0, p.length);this.sm3c3.doFinal(c3, 0);Reset();}}

2.SM4

直接上代码:

a.      SM4主类

【SM4.java】

 

package com.mlq.sm;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;public class SM4 {public static final int SM4_ENCRYPT = 1;public static final 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 static final byte[] SboxTable = { (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 static final int[] FK = { 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc };public static final int[] 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];System.arraycopy(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];System.arraycopy(input, 0, ret, 0, input.length - p);}return ret;}public void sm4_setkey_enc(SM4_Context ctx, byte[] key) throws Exception{if (ctx == null) {throw new Exception("ctx is null!");}if (key == null || key.length != 16) {throw new Exception("key error!");}ctx.mode = SM4_ENCRYPT;sm4_setkey(ctx.sk, key);}public void sm4_setkey_dec(SM4_Context ctx, byte[] key) throws Exception{if (ctx == null) {throw new Exception("ctx is null!");}if (key == null || key.length != 16) {throw new Exception("key error!");}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(SM4_Context ctx, byte[] input) throws Exception {if (input == null) {throw new Exception("input is null!");}if ((ctx.isPadding) && (ctx.mode == SM4_ENCRYPT)) {input = padding(input, SM4_ENCRYPT);}int length = input.length;ByteArrayInputStream bins = new ByteArrayInputStream(input);ByteArrayOutputStream bous = new ByteArrayOutputStream();for(; length > 0; length -= 16){byte[] in = new byte[16];byte[] out = new byte[16];bins.read(in);sm4_one_round(ctx.sk, in, out);bous.write(out);}byte[] output = bous.toByteArray();if (ctx.isPadding && ctx.mode == SM4_DECRYPT) {output = padding(output, SM4_DECRYPT);}bins.close();bous.close();return output;}public byte[] sm4_crypt_cbc(SM4_Context ctx, byte[] iv, byte[] input) throws Exception{if (iv == null || iv.length != 16){throw new Exception("iv error!");}if (input == null) {throw new Exception("input is null!");}if (ctx.isPadding && ctx.mode == SM4_ENCRYPT) {input = padding(input, SM4_ENCRYPT);}int i = 0;int length = input.length;ByteArrayInputStream bins = new ByteArrayInputStream(input);ByteArrayOutputStream bous = new ByteArrayOutputStream();if (ctx.mode == SM4_ENCRYPT) {for(; length > 0; length -= 16){byte[] in = new byte[16];byte[] out = new byte[16];byte[] out1 = new byte[16];bins.read(in);for (i = 0; i < 16; i++) {out[i] = ((byte) (in[i] ^ iv[i]));}sm4_one_round(ctx.sk, out, out1);System.arraycopy(out1, 0, iv, 0, 16);bous.write(out1);}} else {byte[] temp = new byte[16];for(; length > 0; length -= 16){byte[] in = new byte[16];byte[] out = new byte[16];byte[] out1 = new byte[16];bins.read(in);System.arraycopy(in, 0, temp, 0, 16);sm4_one_round(ctx.sk, in, out);for (i = 0; i < 16; i++) {out1[i] = ((byte) (out[i] ^ iv[i]));}System.arraycopy(temp, 0, iv, 0, 16);bous.write(out1);}}byte[] output = bous.toByteArray();if (ctx.isPadding && ctx.mode == SM4_DECRYPT) {output = padding(output, SM4_DECRYPT);}bins.close();bous.close();return output;}}

b.      SM4实体类

【SM4_Context.java】

 

package com.mlq.sm;public class SM4_Context{public int mode;public long[] sk;public boolean isPadding;public SM4_Context() {this.mode = 1;this.isPadding = true;this.sk = new long[32];}}

c.      SM4工具类(这里的PaddingMode采用的是PKCS7)

【SM4Utils.java】

 

package com.mlq.sm;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class SM4Utils{private String secretKey = "";private String iv = "";private boolean hexString = false;public SM4Utils(){}public String encryptData_ECB(String plainText){try {SM4_Context ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = SM4.SM4_ENCRYPT;byte[] keyBytes;if (hexString){keyBytes = Util.hexStringToBytes(secretKey);}else{keyBytes = secretKey.getBytes();}SM4 sm4 = new SM4();sm4.sm4_setkey_enc(ctx, keyBytes);byte[] encrypted = sm4.sm4_crypt_ecb(ctx, plainText.getBytes("GBK"));String cipherText = new BASE64Encoder().encode(encrypted);if (cipherText != null && cipherText.trim().length() > 0){Pattern p = Pattern.compile("\\s*|\t|\r|\n");Matcher m = p.matcher(cipherText);cipherText = m.replaceAll("");}return cipherText;} catch (Exception e) {e.printStackTrace();return null;}}public String decryptData_ECB(String cipherText){try {SM4_Context ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = SM4.SM4_DECRYPT;byte[] keyBytes;if (hexString){keyBytes = Util.hexStringToBytes(secretKey);}else{keyBytes = secretKey.getBytes();}SM4 sm4 = new SM4();sm4.sm4_setkey_dec(ctx, keyBytes);byte[] decrypted = sm4.sm4_crypt_ecb(ctx, new BASE64Decoder().decodeBuffer(cipherText));return new String(decrypted, "GBK");} catch (Exception e) {e.printStackTrace();return null;}}public String encryptData_CBC(String plainText){try {SM4_Context ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = SM4.SM4_ENCRYPT;byte[] keyBytes;byte[] ivBytes;if (hexString){keyBytes = Util.hexStringToBytes(secretKey);ivBytes = Util.hexStringToBytes(iv);}else{keyBytes = secretKey.getBytes();ivBytes = iv.getBytes();}SM4 sm4 = new SM4();sm4.sm4_setkey_enc(ctx, keyBytes);byte[] encrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, plainText.getBytes("GBK"));String cipherText = new BASE64Encoder().encode(encrypted);if (cipherText != null && cipherText.trim().length() > 0){Pattern p = Pattern.compile("\\s*|\t|\r|\n");Matcher m = p.matcher(cipherText);cipherText = m.replaceAll("");}return cipherText;} catch (Exception e) {e.printStackTrace();return null;}}public String decryptData_CBC(String cipherText){try {SM4_Context ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = SM4.SM4_DECRYPT;byte[] keyBytes;byte[] ivBytes;if (hexString){keyBytes = Util.hexStringToBytes(secretKey);ivBytes = Util.hexStringToBytes(iv);}else{keyBytes = secretKey.getBytes();ivBytes = iv.getBytes();}SM4 sm4 = new SM4();sm4.sm4_setkey_dec(ctx, keyBytes);byte[] decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, new BASE64Decoder().decodeBuffer(cipherText));return new String(decrypted, "GBK");} catch (Exception e){e.printStackTrace();return null;}}public static void main(String[] args) throws IOException {String plainText = "ererfeiisgod";SM4Utils sm4 = new SM4Utils();sm4.secretKey = "JeF8U9wHFOMfs2Y8";sm4.hexString = false;System.out.println("ECB模式");String cipherText = sm4.encryptData_ECB(plainText);System.out.println("密文: " + cipherText);System.out.println("");plainText = sm4.decryptData_ECB(cipherText);System.out.println("明文: " + plainText);System.out.println("");System.out.println("CBC模式");sm4.iv = "UISwD9fW6cFh9SNS";cipherText = sm4.encryptData_CBC(plainText);System.out.println("密文: " + cipherText);System.out.println("");plainText = sm4.decryptData_CBC(cipherText);System.out.println("明文: " + plainText);}}

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