有些项目中，需要单独实现国密SM4算法， + *
比如：已经集成了老版本的bouncycastle，但老版本的bouncycastle无法实现国密SM4算法。但你又不能升级它，而你又需要国密SM4算法。 + * + *
参考：
+ *另外有开源项目实现了国密的全部算法：
+ * GmSSL-Java(基于JNI) + * BGMProvider + * 腾讯Kona国密套件 + */ +public class SM4Utils { + + public static byte[] encryptData_ECB(String plainText, byte[] keyBytes) throws Exception { + SM4_Context ctx = new SM4_Context(); + ctx.isPadding = true; + ctx.mode = SM4_Body.SM4_ENCRYPT; + + SM4_Body sm4Body = new SM4_Body(); + sm4Body.sm4_setkey_enc(ctx, keyBytes); + return sm4Body.sm4_crypt_ecb(ctx, plainText.getBytes(StandardCharsets.UTF_8)); + } + + public static String decryptData_ECB(String cipherText, byte[] keyBytes) throws Exception { + if (cipherText != null && !cipherText.trim().isEmpty()) { + Pattern p = Pattern.compile("\\s*|\t|\r|\n"); + Matcher m = p.matcher(cipherText); + cipherText = m.replaceAll(""); + } + + return decryptData_ECB(Base64.decodeBase64(cipherText),keyBytes); + } + + public static String decryptData_ECB(byte[] cipherByte, byte[] keyBytes) throws Exception { + SM4_Context ctx = new SM4_Context(); + ctx.isPadding = true; + ctx.mode = SM4_Body.SM4_DECRYPT; + + SM4_Body sm4Body = new SM4_Body(); + sm4Body.sm4_setkey_dec(ctx, keyBytes); + byte[] decrypted = sm4Body.sm4_crypt_ecb(ctx, cipherByte); + return new String(decrypted, StandardCharsets.UTF_8); + } + + public static byte[] encryptData_CBC(String plainText, byte[] keyBytes, byte[] ivBytes) throws Exception { + SM4_Context ctx = new SM4_Context(); + ctx.isPadding = true; + ctx.mode = SM4_Body.SM4_ENCRYPT; + + SM4_Body sm4Body = new SM4_Body(); + sm4Body.sm4_setkey_enc(ctx, keyBytes); + + return sm4Body.sm4_crypt_cbc(ctx, ivBytes, plainText.getBytes(StandardCharsets.UTF_8)); + } + + public static String decryptData_CBC(String cipherText, byte[] keyBytes, byte[] ivBytes) throws Exception { + if (cipherText != null && !cipherText.trim().isEmpty()) { + Pattern p = Pattern.compile("\\s*|\t|\r|\n"); + Matcher m = p.matcher(cipherText); + cipherText = m.replaceAll(""); + } + + return decryptData_CBC(Base64.decodeBase64(cipherText),keyBytes,ivBytes); + } + + public static String decryptData_CBC(byte[] cipherByte, byte[] keyBytes, byte[] ivBytes) throws Exception { + SM4_Context ctx = new SM4_Context(); + ctx.isPadding = true; + ctx.mode = SM4_Body.SM4_DECRYPT; + + SM4_Body sm4Body = new SM4_Body(); + sm4Body.sm4_setkey_dec(ctx, keyBytes); + + byte[] decrypted = sm4Body.sm4_crypt_cbc(ctx, ivBytes, cipherByte); + + return new String(decrypted, StandardCharsets.UTF_8); + } + + public static void main(String[] args) throws Exception { + String plainText = "abc"; + // key 16 位字符串 + String key = "UVMxWFBaZXVSNm9YVTU0dg=="; + byte[] keyByte = Base64.decodeBase64(key); + + System.out.println("ECB模式加密"); + byte[] cipherTextByte = SM4Utils.encryptData_ECB(plainText, keyByte); + String cipherText = Base64.encodeBase64String(cipherTextByte); + System.out.println("密文: " + cipherText);//qtu7LHVpilXxaz8mPW1VjQ== + String plainText2 = SM4Utils.decryptData_ECB(cipherText, keyByte); + System.out.println("解密: " + plainText2); + + System.out.println("CBC模式加密"); + String iv = "3131313131313131"; + //byte[] ivByte = Base64.decodeBase64(iv); + byte[] ivByte = iv.getBytes(); + + byte[] cipherText2Byte = SM4Utils.encryptData_CBC(plainText,keyByte,ivByte); + String cipherText2 = Base64.encodeBase64String(cipherText2Byte); + System.out.println("加密密文: " + cipherText2); + String plainText3 = SM4Utils.decryptData_CBC(cipherText2Byte,keyByte,ivByte); + System.out.println("解密明文: " + plainText3); + } +} \ No newline at end of file diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/sm4/SM4_Body.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sm4/SM4_Body.java new file mode 100644 index 00000000..686a9761 --- /dev/null +++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sm4/SM4_Body.java @@ -0,0 +1,338 @@ +package com.ruoyi.common.utils.sm4; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.util.Arrays; + +/** + * 自行实现国密SM4算法 + */ +public class SM4_Body { + 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; + } + + //S 盒 + 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; + return SboxTable[i]; + } + + 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); + } + + public static byte[] PKCS5Padding(byte[] inputByte) { + // 获字节长度 + int length = inputByte.length; + // 补齐位数 + int leftLength = 16 - (length % 16); + // 定义新字节 + byte[] arrayReturn = new byte[length + leftLength]; + // 定义填充字节 + byte[] plusbyte = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, + 0x0f,0x10 }; + // 不满足16倍数自动填充 + for (int i = 0; i < length + leftLength; i++) { + if (i < length) { + // 赋值 + arrayReturn[i] = inputByte[i]; + } else { + // 补齐位数 + arrayReturn[i] = (byte)leftLength; + } + } + + return arrayReturn; + } + + public static byte[] PKCS7PaddingRestore(byte[] paramArray) { + //try { + // 定义是否需要消除填充数据 + //boolean needRestore = true; + int length = paramArray.length;// 获取字节长度 + // 拆分并获取最后一组16倍数数值 + byte[] paramByteLast = Arrays.copyOfRange(paramArray, length - 16, length); + // 获取最后一个字节 + byte byteLast = paramByteLast[paramByteLast.length - 1]; + + return Arrays.copyOfRange(paramArray,0,length-byteLast); + } + + //修改了填充模式,为模式 + private byte[] padding(byte[] input, int mode) { + byte[] ret = (byte[]) null; + if (mode == SM4_ENCRYPT) { + ret = PKCS5Padding(input); + } else { + ret = PKCS7PaddingRestore(input); + } + return ret; + } + + public void sm4_setkey_enc(SM4_Context ctx, byte[] key) throws RuntimeException{ + if (ctx == null) { + throw new RuntimeException("ctx is null!"); + } + + if (key == null || key.length != 16) { + throw new RuntimeException("key error!"); + } + + ctx.mode = SM4_ENCRYPT; + sm4_setkey(ctx.sk, key); + } + + public void sm4_setkey_dec(SM4_Context ctx, byte[] key) throws RuntimeException { + if (ctx == null) { + throw new RuntimeException("ctx is null!"); + } + + if (key == null || key.length != 16) { + throw new RuntimeException("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 RuntimeException, IOException { + if (input == null) { + throw new RuntimeException("input is null!"); + } + + if ((ctx.isPadding) && (ctx.mode == SM4_ENCRYPT)) { + input = padding(input, SM4_ENCRYPT); + } + + byte[] output = null; + try(ByteArrayInputStream bins = new ByteArrayInputStream(input); + ByteArrayOutputStream bous = new ByteArrayOutputStream();) { + int length = input.length; + + 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); + } + + output = bous.toByteArray(); + if (ctx.isPadding && ctx.mode == SM4_DECRYPT) { + output = padding(output, SM4_DECRYPT); + } + } + + return output; + } + + public byte[] sm4_crypt_cbc(SM4_Context ctx, byte[] iv, byte[] input) throws RuntimeException, IOException { + if (iv == null || iv.length != 16) { + throw new RuntimeException("iv error!"); + } + + if (input == null) { + throw new RuntimeException("input is null!"); + } + + byte[] tempIv = new byte[iv.length];//防止iv被改变 + System.arraycopy(iv, 0, tempIv, 0, iv.length); + + if (ctx.isPadding && ctx.mode == SM4_ENCRYPT) { + input = padding(input, SM4_ENCRYPT); + } + + byte[] output = null; + try(ByteArrayInputStream bins = new ByteArrayInputStream(input); + ByteArrayOutputStream bous = new ByteArrayOutputStream();) { + + int i = 0; + int length = input.length; + 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] ^ tempIv[i])); + } + sm4_one_round(ctx.sk, out, out1); + System.arraycopy(out1, 0, tempIv, 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] ^ tempIv[i])); + } + System.arraycopy(temp, 0, tempIv, 0, 16); + bous.write(out1); + } + } + + output = bous.toByteArray(); + if (ctx.isPadding && ctx.mode == SM4_DECRYPT) { + output = padding(output, SM4_DECRYPT); + } + } + + return output; + } +} \ No newline at end of file diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/sm4/SM4_Context.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sm4/SM4_Context.java new file mode 100644 index 00000000..0a59b63b --- /dev/null +++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sm4/SM4_Context.java @@ -0,0 +1,24 @@ +package com.ruoyi.common.utils.sm4; + +public class SM4_Context { + + /** + * 模式（0：解密，1：加密） + */ + public int mode; + + /** + * 是否填充 + */ + public boolean isPadding; + + public long[] sk; + + + public SM4_Context(){ + this.mode = 1; + this.isPadding = true; + this.sk = new long[32];//以字（32位）为单位进行加密运算 + } + +} \ No newline at end of file