app网站有哪些,什么专业学网站建设,WordPress 三图,互联网广告推广公司特别说明#xff1a;该专栏文章均来源自微信公众号《大数据实战演练》#xff0c;欢迎关注#xff01;前言最近工作中需要实现HBase自定义扩展sms4加密#xff0c;今天就先来说一下Java版的SMS4加密解密算法的具体实现。一、概述1.1 基本概念本算法是一个分组算法#xff…特别说明该专栏文章均来源自微信公众号《大数据实战演练》欢迎关注前言最近工作中需要实现HBase自定义扩展sms4加密今天就先来说一下Java版的SMS4加密解密算法的具体实现。一、概述1.1 基本概念本算法是一个分组算法由加解密算法和密钥扩展算法组成。该算法的分组长度为128比特(Bit)密钥长度为128比特(Bit)也就是16个字节(Bytes)。加密算法与密钥扩展算法都采用32轮非线性迭代结构。解密算法与加密算法的结构相同只是轮密钥的使用顺序相反解密轮密钥是加密轮密钥的逆序。在SMS4的基础类中你会看到加密和解密的基础函数是同一个(本篇文章中的sms4KeyExt()方法)只是需要一个int型的标志位来判断是加密还是解密。1.2 密码算法结构基本轮函数加迭代解密算法与加密算法相同1.3 S盒S-boxS 盒为固定的8比特(Bit)输入8比特(Bit)输出的置换记为Sbox(⋅) 。1.4 SMS4密码算法1.4.1 基本运算⨁ 32比特异或⋘ i 32比特循环左移i位1.4.2 基本密码部件非线性字节变换部件S盒非线性字变换τ32位字的非线性变换字线性部件L变换字合成变换T1.4.3 轮函数F1.5 密钥扩展算法常数FK固定参数CK更多详细的资料请私信 “sms4” 到本头条号获取SMS4相关资料(一个PPT一个PDF)。二、编码实现以下代码可能与网上有些雷同毕竟万变不离其宗但我将每一个方法代表什么意思都写了很详细的注释供大家理解这样可以缩短你的学习时长。都快被自己感动哭了package com.xxx.sms4;import java.util.Arrays;/** * author CREATE_17 * description: SMS4加密与解密算法实现 * date: 2019/4/2 14:10 */public class Sms4 { /** * description: ENCRYPT与DECRYPT为加解密的判断依据 */ private static final int ENCRYPT 1; private static final int DECRYPT 0; /** * description: 轮数轮函数的迭代次数 * 加密算法与密钥扩展算法都采用32轮非线性迭代结构。 */ private static final int ROUND 32; private static final int BLOCK 16; /** * description: S盒中数据均采用16进制表示 */ private static short[] sBox { 0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05, 0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99, 0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62, 0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6, 0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8, 0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35, 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87, 0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e, 0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1, 0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3, 0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f, 0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51, 0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8, 0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0, 0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84, 0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48 }; /** * description: 常数FK在密钥扩展中使用一些常数 */ private static int[] fk {0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc}; /** * description: 32个固定参数CK * 产生规则Ckij (4ij)×7(mod 256) i0,1,2…31,j0,1,…3 */ private static 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 }; /** * description: 移位rot1(x,y)为循环左移位y * param: x * param: y * return: int */ private int rotl(int x, int y) { return x y | x (32 - y); } /** * description: 加解密非线性τ函数Bτ(A) * param: a * return: int */ private int byteSub(int a) { return (sBox[a 24 0xFF] 0xFF) 24 ^ (sBox[a 16 0xFF] 0xFF) 16 ^ (sBox[a 8 0xFF] 0xFF) 8 ^ (sBox[a 0xFF] 0xFF); } /** * description: 加解密的L函数 * param: b * return: int */ private int l1(int b) { return b ^ rotl(b, 2) ^ rotl(b, 10) ^ rotl(b, 18) ^ rotl(b, 24); } /** * description: 密钥扩展 * param: b * return: int */ private int l2(int b) { return b ^ rotl(b, 13) ^ rotl(b, 23); } /** * description: SMS4的加密方法实现 * param: input(待输入的明文) * param: output(待输出的密文) * param: rk(轮密钥) * return: void */ private void sms4Crypt(byte[] input, byte[] output, int[] rk) { int mid; int[] x new int[4]; int[] tmp new int[4]; for (int i 0; i 4; i) { tmp[0] input[4 * i] 0xff; tmp[1] input[1 4 * i] 0xff; tmp[2] input[2 4 * i] 0xff; tmp[3] input[3 4 * i] 0xff; x[i] tmp[0] 24 | tmp[1] 16 | tmp[2] 8 | tmp[3]; } // 进行32轮的加密变换操作 for (int r 0; r 32; r 4) { mid x[1] ^ x[2] ^ x[3] ^ rk[r]; mid byteSub(mid); // x4 x[0] x[0] ^ l1(mid); mid x[2] ^ x[3] ^ x[0] ^ rk[r 1]; mid byteSub(mid); // x5 x[1] x[1] ^ l1(mid); mid x[3] ^ x[0] ^ x[1] ^ rk[r 2]; mid byteSub(mid); // x6 x[2] x[2] ^ l1(mid); mid x[0] ^ x[1] ^ x[2] ^ rk[r 3]; mid byteSub(mid); // x7 x[3] x[3] ^ l1(mid); } // 反序变换 for (int j 0; j 16; j 4) { output[j] (byte) (x[3 - j / 4] 24 0xFF); output[j 1] (byte) (x[3 - j / 4] 16 0xFF); output[j 2] (byte) (x[3 - j / 4] 8 0xFF); output[j 3] (byte) (x[3 - j / 4] 0xFF); } } /** * description: SMS4的密钥扩展算法 * param: key(加密密钥) * param: rk(子密钥) * param: cryptFlag(加解密标志) * return: void */ private void sms4KeyExt(byte[] key, int[] rk, int cryptFlag) { int r, mid; int[] x new int[4]; int[] tmp new int[4]; for (int i 0; i 4; i) { // 实现对初始密钥的分组(分为4组) tmp[0] key[4 * i] 0xFF; tmp[1] key[1 4 * i] 0xff; tmp[2] key[2 4 * i] 0xff; tmp[3] key[3 4 * i] 0xff; x[i] tmp[0] 24 | tmp[1] 16 | tmp[2] 8 | tmp[3]; x[i] key[4 * i] 24 | key[1 4 * i] 16 | key[2 4 * i] 8 | key[3 4 * i]; } // 异或运算之后的结果 x[0] ^ fk[0]; x[1] ^ fk[1]; x[2] ^ fk[2]; x[3] ^ fk[3]; for (r 0; r 32; r 4) { // mid x[1] ^ x[2] ^ x[3] ^ ck[r]; mid byteSub(mid); // rk0K4 rk[r] x[0] ^ l2(mid); mid x[2] ^ x[3] ^ x[0] ^ ck[r 1]; mid byteSub(mid); // rk1K5 rk[r 1] x[1] ^ l2(mid); mid x[3] ^ x[0] ^ x[1] ^ ck[r 2]; mid byteSub(mid); // rk2K6 rk[r 2] x[2] ^ l2(mid); mid x[0] ^ x[1] ^ x[2] ^ ck[r 3]; mid byteSub(mid); // rk3K7 rk[r 3] x[3] ^ l2(mid); } // cryptFla0 为解密解密时轮密钥使用顺序rk31,rk30,...,rk0(逆序) if (cryptFlag DECRYPT) { for (r 0; r 16; r) { mid rk[r]; rk[r] rk[31 - r]; rk[31 - r] mid; } } } /** * description: 加解密的基础方法 * param: in(待输入的明文或密文) * param: inLen(16) * param: key(密钥) * param: out(待输出的密文或明文) * param: cryptFlag(加解密的判断条件) * return: int */ private void sms4(byte[] in, int inLen, byte[] key, byte[] out, int cryptFlag) { int point 0; int[] roundKey new int[ROUND]; sms4KeyExt(key, roundKey, cryptFlag); byte[] input; byte[] output new byte[16]; while (inLen BLOCK) { input Arrays.copyOfRange(in, point, point 16); sms4Crypt(input, output, roundKey); System.arraycopy(output, 0, out, point, BLOCK); inLen - BLOCK; point BLOCK; } } /** * description: 明文加密 * param: plaintext(明文) * param: key(密钥) * return: byte[] */ private static byte[] encodeSMS4(String plaintext, byte[] key) { if (plaintext null || .equals(plaintext)) { return null; } for (int i plaintext.getBytes().length % 16; i 16; i) { plaintext 0; } return Sms4.encodeSMS4(plaintext.getBytes(), key); } /** * description: 不限明文长度的SMS4加密 * param: plainText(明文) * param: key(密钥) * return: byte类型的明文加密结果 */ private static byte[] encodeSMS4(byte[] plainText, byte[] key) { byte[] ciphertext new byte[plainText.length]; int k 0; int plainLen plainText.length; while (k 16 plainLen) { byte[] cellPlain new byte[16]; for (int i 0; i 16; i) { cellPlain[i] plainText[k i]; } byte[] cellCipher encode16(cellPlain, key); for (int i 0; i cellCipher.length; i) { ciphertext[k i] cellCipher[i]; } k 16; } return ciphertext; } /** * description: 不限密文长度的SMS4解密获得byte类型的明文 * param: cipherText(密文) * param: key(密钥) * return: byte[] */ private static byte[] decodeSMS4(byte[] cipherText, byte[] key) { byte[] plaintext new byte[cipherText.length]; int k 0; int cipherLen cipherText.length; while (k 16 cipherLen) { byte[] cellCipher new byte[16]; for (int i 0; i 16; i) { cellCipher[i] cipherText[k i]; } byte[] cellPlain decode16(cellCipher, key); for (int i 0; i cellPlain.length; i) { plaintext[k i] cellPlain[i]; } k 16; } return plaintext; } /** * description: 解密获得明文字符串 * param: cipherText(密文) * param: key(密钥) * return: java.lang.String */ private static String decodeSMS4toString(byte[] cipherText, byte[] key) { byte[] plaintext new byte[cipherText.length]; plaintext decodeSMS4(cipherText, key); return new String(plaintext); } /** * description: 16位明文加密得到密文 * param: plainText(明文) * param: key(密钥) * return: byte[] */ private static byte[] encode16(byte[] plainText, byte[] key) { byte[] cipher new byte[16]; Sms4 sm4 new Sms4(); sm4.sms4(plainText, 16, key, cipher, ENCRYPT); return cipher; } /** * description: 解密密文返回字节类型的明文 * param: key * return: byte[] */ private static byte[] decode16(byte[] ciphertext, byte[] key) { byte[] plain new byte[16]; Sms4 sm4 new Sms4(); sm4.sms4(ciphertext, 16, key, plain, DECRYPT); return plain; } /** * description: 将16进制byte类型的密文转换为String字符串 * param: byteArray * return: java.lang.String */ private static String toHexString(byte[] byteArray) { if (byteArray null || byteArray.length 1) { throw new IllegalArgumentException(this byteArray must not be null or empty); } final StringBuilder hexString new StringBuilder(); for (int i 0; i byteArray.length; i) { if ((byteArray[i] 0xff) 0x10) { hexString.append(0); } hexString.append(Integer.toHexString(0xFF byteArray[i])); } return hexString.toString().toLowerCase(); } public static void main(String[] args) { // 密钥 byte[] key {0x01, 0x23, 0x45, 0x67, (byte) 0x89, (byte) 0xab, (byte) 0xcd, (byte) 0xef, (byte) 0xfe, (byte) 0xdc, (byte) 0xba, (byte) 0x98, 0x76, 0x54, 0x32, 0x10};// byte[] key JeF8U9wHFOMfs2S3.getBytes(); // 明文 String plainText SMS4测试大数据实战演练; byte[] enOut encodeSMS4(plainText, key); if (enOut null) { return; } System.out.println(加密结果); System.out.println(toHexString(enOut)); byte[] deOut decodeSMS4(enOut, key); System.out.println(解密结果(return byte[])); System.out.println(Arrays.toString(deOut)); String deOutStr decodeSMS4toString(enOut, key); System.out.println(解密结果(return String) deOutStr); }}明文设置为“SMS4测试大数据实战演练”程序会对明文进行加密然后在对密文进行解密。直接运行程序得到加密与解密结果如下图所示不要忘记了SMS4更多详细的资料请私信 “sms4” 到本头条号获取相关资料(一个PPT一个PDF)。
