c#
安装BouncyCastle
SM4工具类
using System.Text; using Org.BouncyCastle.Utilities.Encoders; namespace StrongOA.Core.Utils { /// <summary> /// SM4工具类 /// </summary> public class SM4Util { public static string secretKey = "1884546261730461"; // 长度必须为16字节 public static string iv = "0000000000000000"; public static bool hexString = false; public static string Encrypt_ECB(string plainText) { var ctx = new SM4_Context { isPadding = true, mode = SM4.SM4_ENCRYPT }; byte[] keyBytes; if (hexString) { keyBytes = Hex.Decode(secretKey); } else { keyBytes = Encoding.ASCII.GetBytes(secretKey); } var sm4 = new SM4(); sm4.Sm4_setkey_enc(ctx, keyBytes); byte[] encrypted = sm4.Sm4_crypt_ecb(ctx, Encoding.ASCII.GetBytes(plainText)); string cipherText = Encoding.ASCII.GetString(Hex.Encode(encrypted)); return cipherText; } public byte[] Encrypt_ECB(byte[] plainBytes, byte[] keyBytes) { var ctx = new SM4_Context { isPadding = false, mode = SM4.SM4_ENCRYPT }; var sm4 = new SM4(); sm4.Sm4_setkey_enc(ctx, keyBytes); byte[] encrypted = sm4.Sm4_crypt_ecb(ctx, plainBytes); return encrypted; //return Hex.Encode(encrypted); } public static string Decrypt_ECB(string cipherText) { var ctx = new SM4_Context { isPadding = true, mode = SM4.SM4_DECRYPT }; byte[] keyBytes; if (hexString) { keyBytes = Hex.Decode(secretKey); } else { keyBytes = Encoding.ASCII.GetBytes(secretKey); } var sm4 = new SM4(); sm4.Sm4_setkey_dec(ctx, keyBytes); byte[] decrypted = sm4.Sm4_crypt_ecb(ctx, Hex.Decode(cipherText)); return Encoding.ASCII.GetString(decrypted); } public string Encrypt_CBC(string plainText) { var ctx = new SM4_Context { isPadding = true, mode = SM4.SM4_ENCRYPT }; byte[] keyBytes; byte[] ivBytes; if (hexString) { keyBytes = Hex.Decode(secretKey); ivBytes = Hex.Decode(iv); } else { keyBytes = Encoding.ASCII.GetBytes(secretKey); ivBytes = Encoding.ASCII.GetBytes(iv); } var sm4 = new SM4(); sm4.Sm4_setkey_enc(ctx, keyBytes); byte[] encrypted = sm4.Sm4_crypt_cbc(ctx, ivBytes, Encoding.ASCII.GetBytes(plainText)); string cipherText = Encoding.ASCII.GetString(Hex.Encode(encrypted)); return cipherText; } public string Decrypt_CBC(string cipherText) { var ctx = new SM4_Context { isPadding = true, mode = SM4.SM4_DECRYPT }; byte[] keyBytes; byte[] ivBytes; if (hexString) { keyBytes = Hex.Decode(secretKey); ivBytes = Hex.Decode(iv); } else { keyBytes = Encoding.ASCII.GetBytes(secretKey); ivBytes = Encoding.ASCII.GetBytes(iv); } var sm4 = new SM4(); sm4.Sm4_setkey_dec(ctx, keyBytes); byte[] decrypted = sm4.Sm4_crypt_cbc(ctx, ivBytes, Hex.Decode(cipherText)); return Encoding.ASCII.GetString(decrypted); } } }
using System; using System.Collections.Generic; namespace StrongOA.Core.Utils { public class SM4 { public const int SM4_ENCRYPT = 1; public const int SM4_DECRYPT = 0; private static 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) | b[i + 3] & 0xff & 0xffffffffL; return n; } private static 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 static long SHL(long x, int n) { return (x & 0xFFFFFFFF) << n; } private static long ROTL(long x, int n) { return SHL(x, n) | x >> (32 - n); } private static void SWAP(long[] sk, int i) { long t = sk[i]; sk[i] = sk[(31 - i)]; sk[(31 - i)] = t; } public byte[] SboxTable = new byte[] { 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 }; 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) { 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]); long bb = GET_ULONG_BE(b, 0); long 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) { 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]); long bb = GET_ULONG_BE(b, 0); long 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 static byte[] Padding(byte[] input, int mode) { if (input == null) { return null; } byte[] ret; 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) { ctx.mode = SM4_DECRYPT; Sm4_setkey(ctx.sk, key); int i; for (i = 0; i < 16; i++) { SWAP(ctx.sk, i); } } public byte[] Sm4_crypt_ecb(SM4_Context 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(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); var bousList = new List<byte>(); 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) { byte[] 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]; } } }
var sm4En = SM4Util.Encrypt_ECB("test"); var sm4De = SM4Util.Decrypt_ECB(sm4En);
java
package com.sxsoft.admin.utils; import cn.hutool.core.util.CharsetUtil; import cn.hutool.crypto.SmUtil; import org.bouncycastle.asn1.ASN1InputStream; import org.bouncycastle.asn1.ASN1Integer; import org.bouncycastle.asn1.ASN1Sequence; import org.bouncycastle.asn1.gm.GMNamedCurves; import org.bouncycastle.asn1.x9.X9ECParameters; import org.bouncycastle.crypto.digests.SM3Digest; import org.bouncycastle.crypto.params.ECDomainParameters; import org.bouncycastle.crypto.params.ECPrivateKeyParameters; import org.bouncycastle.crypto.params.ECPublicKeyParameters; import org.bouncycastle.crypto.params.ParametersWithID; import org.bouncycastle.crypto.signers.SM2Signer; import org.bouncycastle.jce.ECNamedCurveTable; import org.bouncycastle.jce.spec.ECParameterSpec; import org.bouncycastle.math.ec.ECPoint; import org.bouncycastle.util.Strings; import org.bouncycastle.util.encoders.Hex; import java.io.ByteArrayInputStream; import java.math.BigInteger; import java.util.Enumeration; /** * 国密工具类 * * @author nzr * @date 2023-12-14 * @description */ public class SMUtil { public static void main(String[] args) { String e = SMUtil.sm4Encry("1884546261730461","test"); System.out.println(e); } //SM3消息摘要 public static String sm3Digest(String body) { try { SM3Digest sm3Digest = new SM3Digest(); sm3Digest.update(body.getBytes("UTF-8"), 0, body.getBytes("UTF-8").length); byte[] ret = new byte[sm3Digest.getDigestSize()]; sm3Digest.doFinal(ret, 0); return Hex.toHexString(ret); } catch (Exception e) { throw new RuntimeException("签名计算出现异常"); } } //SM2使用私钥签名 public static String sm2Sign(String privateKey, String content) throws Exception { byte[] key = Hex.decode(privateKey); byte[] data = content.getBytes(); // 获得一条签名曲线 ECParameterSpec spec = ECNamedCurveTable.getParameterSpec("sm2p256v1"); // 构造domain函数 ECDomainParameters domainParameters = new ECDomainParameters(spec.getCurve(), spec.getG(), spec.getN(), spec.getH(), spec.getSeed()); // 国密要求,ID默认值为1234567812345678 ECPrivateKeyParameters ECPrivateKey = new ECPrivateKeyParameters(new BigInteger(1, key), domainParameters); ParametersWithID parameters = new ParametersWithID(ECPrivateKey, "1234567812345678".getBytes()); // 初始化签名实例 SM2Signer signer = new SM2Signer(); signer.init(true, parameters); signer.update(data, 0, data.length); return Hex.toHexString(signer.generateSignature()); } private static byte[] decodeDERSignature(byte[] signature) throws Exception { ASN1InputStream stream = new ASN1InputStream(new ByteArrayInputStream(signature)); ASN1Sequence primitive = (ASN1Sequence) stream.readObject(); Enumeration enumeration = primitive.getObjects(); BigInteger R = ((ASN1Integer) enumeration.nextElement()).getValue(); BigInteger S = ((ASN1Integer) enumeration.nextElement()).getValue(); byte[] bytes = new byte[64]; byte[] r = format(R.toByteArray()); byte[] s = format(S.toByteArray()); System.arraycopy(r, 0, bytes, 0, 32); System.arraycopy(s, 0, bytes, 32, 32); return bytes; } private static byte[] format(byte[] value) { if (value.length == 32) { return value; } else { byte[] bytes = new byte[32]; if (value.length > 32) { System.arraycopy(value, value.length - 32, bytes, 0, 32); } else { System.arraycopy(value, 0, bytes, 32 - value.length, value.length); } return bytes; } } public static boolean verify(String publicKey, String content, byte[] signData) { byte[] message = content.getBytes(); // 获取一条SM2曲线参数 X9ECParameters sm2ECParameters = GMNamedCurves.getByName("sm2p256v1"); // 构造domain参数 ECDomainParameters domainParameters = new ECDomainParameters(sm2ECParameters.getCurve(), sm2ECParameters.getG(), sm2ECParameters.getN()); //提取公钥点 ECPoint pukPoint = sm2ECParameters.getCurve().decodePoint(Hex.decode(publicKey)); // 公钥前面的02或者03表示是压缩公钥,04表示未压缩公钥, 04的时候,可以去掉前面的04 ECPublicKeyParameters publicKeyParameters = new ECPublicKeyParameters(pukPoint, domainParameters); //创建签名实例 SM2Signer sm2Signer = new SM2Signer(); ParametersWithID parametersWithID = new ParametersWithID(publicKeyParameters, Strings.toByteArray("1234567812345678")); sm2Signer.init(false, parametersWithID); sm2Signer.update(message, 0, message.length); //验证签名结果 boolean verify = sm2Signer.verifySignature(signData); return verify; } public static String sm4Encry(String key, String content) { return SmUtil.sm4(key.getBytes()).encryptHex(content); } public static String sm4Decry(String key, String encryptedContent) { return SmUtil.sm4(key.getBytes()).decryptStr(encryptedContent, CharsetUtil.CHARSET_UTF_8); } }
标签:SM4,java,16,c#,sm4,ctx,long,new,byte From: https://www.cnblogs.com/privateLogs/p/18413529