目录
介绍
概要背景
秘钥情况
SM1
SM2
SM3
SM4
国密算法的安全性
SM1算法：
SM2算法：
SM3算法：
SM4算法：
实现
依赖
公共使用类
Cipher
uitl 类
sm2代码
SM2 类
SM2Utils
sm3 代码
SM3Digest
SM3Test
日志
SM4代码
SM4_Context
SM4Uitls jdk1.7 和 1.8 这里有变化 对base64 的类 代码中有提示
TESTSm4
近年来，随着金融安全上升到国家安全的高度，国家有关机关和监管机构提出推进国家安全和长期战略的实施
密码算法是确保信息安全的核心技术，特别是最关键的银行业核心领域长期以来一直使用3DES、SHA-1、RSA国际通用密码算法系统及相关标准。2010年底，国家密码管理局公布了中国自主开发的椭圆曲线公钥密码算法（SM2算法）。为确保重要经济系统密码应用的安全，国家密码管理局于2011年发布了《关于升级公钥密码算法的通知》，要求自2011年3月1日起，国家密码算法应用于在建和拟建的公钥密码基础设施电子认证系统和密钥管理系统。自2011年7月1日起，应使用公钥密码的信息系统SM2算法。”
作者 蒋浩宇
对称加密。其加密强度和AES相当。算法不公开，需要通过加密芯片的接口调用。
为非对称加密，基于ECC。该算法已公开。由于该算法基于ECC，故其签名速度与秘钥生成速度都快于RSA。ECC 256位（SM2采用的就是ECC 256位的一种）安全强度比RSA 2048位高，但运算速度快于RSA。
消息摘要。可以用MD5作为对比理解。该算法已公开。校验结果为256位。
无线局域网标准的分组数据算法。对称加密，密钥长度和分组长度均为128位。
非开源 需要通过加密芯片的接口进行调用
SM2椭圆曲线公钥密码算法是我国自主设计的公钥密码算法，包括SM2-1椭圆曲线数字签名算法，SM2-2椭圆曲线密钥交换协议，SM2-3椭圆曲线公钥加密算法，分别用于实现数字签名密钥协商和数据加密等功能。SM2算法与RSA算法不同的是，SM2算法是基于椭圆曲线上点群离散对数难题，相对于RSA算法，256位的SM2密码强度已经比2048位的RSA密码强度要高。
SM3杂凑算法是我国自主设计的密码杂凑算法，适用于商用密码应用中的数字签名和验证消息认证码的生成与验证以及随机数的生成，可满足多种密码应用的安全需求。为了保证杂凑算法的安全性，其产生的杂凑值的长度不应太短，例如MD5输出128比特杂凑值，输出长度太短，影响其安全性。SHA-1算法的输出长度为160比特，SM3算法的输出长度为256比特，因此SM3算法的安全性要高于MD5算法和SHA-1算法。
SM4分组密码算法是我国自主设计的分组对称密码算法，用于实现数据的加密/解密运算，以保证数据和信息的机密性。要保证一个对称密码算法的安全性的基本条件是其具备足够的密钥长度，SM4算法与AES算法具有相同的密钥长度分组长度128比特，因此在安全性上高于3DES算法。
<dependency> <groupId>org.bouncycastle</groupId> <artifactId>bcprov-jdk15on</artifactId> <version>1.46</version> </dependency>
package jianghaoyu.security; 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; import jianghaoyu.security.sm2.SM2; import jianghaoyu.security.sm3.SM3Digest; /*** * @author jianghaoyu */ 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()); byte p[] = Util.byteConvert32Bytes(p2.getXCoord().toBigInteger()); this.sm3keybase.update(p, 0, p.length); this.sm3c3.update(p, 0, p.length); p = Util.byteConvert32Bytes(p2.getYCoord().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.getYCoord().toBigInteger()); this.sm3c3.update(p, 0, p.length); this.sm3c3.doFinal(c3, 0); Reset(); } }
package jianghaoyu.security; import java.math.BigInteger; /*** * @author jianghaoyu */ 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; } }
package jianghaoyu.security.sm2; 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; /*** * @author YU.JIANGHAO */ 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); } }
package jianghaoyu.security.sm2; 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; import jianghaoyu.security.Cipher; import jianghaoyu.security.Util; /*** * 国密码 sm * @author jianghaoyu */ 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()));//1.46 System.out.println("公钥: " + Util.byteToHex(publicKey.getEncoded(true)));//1.64 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(true)) + 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 * 2 String 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ECPoint ECPoint 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; } }
package jianghaoyu.security.sm2; import jianghaoyu.security.Util; public class SM2Test { public static void main(String[] args) throws Exception { //生成密钥对 SM2Utils.generateKeyPair(); // 接口数据 https://sgccetpt.sgcc.com.cn:21002/ebwebapi/api/project/ebProject/queryPageList?v=1640053932442 String plainText = "{\"code\":200,\"message\":\"成功\",\"data\":ges\":295}}"; 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("--------------进入sm2加密_阶段--------------"); System.out.println("加密: "+plainText+" 长度："+plainText.length()); long start_time = System.currentTimeMillis(); String cipherText = SM2Utils.encrypt(Util.hexToByte(pubk), sourceData); long end_time = System.currentTimeMillis(); System.out.println(cipherText); System.out.println("加密后长度："+cipherText.length() +" 耗时：（"+(end_time - start_time)+"）毫米"); System.out.println("--------------进入sm2解密_阶段--------------"); long start_time2 = System.currentTimeMillis(); plainText = new String(SM2Utils.decrypt(Util.hexToByte(prik), Util.hexToByte(cipherText))); long end_time2 = System.currentTimeMillis(); System.out.println("解密后值: "+plainText); System.out.println("解密后长度："+plainText.length() +" 耗时：（"+(end_time2 - start_time2)+"）毫米"); } }
package jianghaoyu.security.sm3; import jianghaoyu.security.Util; 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; } }
package jianghaoyu.security.sm3; 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; } }
package jianghaoyu.security.sm3; import org.bouncycastle.util.encoders.Hex; public class SM3Test { 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()); } }
C2C898F5FEFE794528E45CC946E383190C9C4E9C686CE41BA1056E05B246261A
package jianghaoyu.security.sm4; 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; } }
package jianghaoyu.security.sm4; 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]; } }
package jianghaoyu.security.sm4; import org.bouncycastle.util.encoders.Hex; import jianghaoyu.secp.Strings; import jianghaoyu.security.Util; import java.security.SecureRandom; import java.util.Base64; import java.util.regex.Matcher; import java.util.regex.Pattern; public class SM4Utils { public String secretKey = ""; private String iv = ""; public void setIv(String iv){ this.iv = iv; } public boolean hexString = false; public SM4Utils(){ } /** * generate a secret key. * @return a random key or iv with hex code type. */ public String generateKeyOrIV() { byte[] key = new byte[16]; new SecureRandom().nextBytes(key); return Strings.fromByteArray(Hex.encode(key)); } public String encryptData_ECB(String plainText) { try { SM4_Context ctx = new SM4_Context(); ctx.isPadding = true; ctx.mode = SM4.SM4_ENCRYPT; byte[
标签： 连接器xcd45t4k1p40电力电容电抗器限流电抗器xd1贴片电容cl05b102ko 锐单商城拥有海量元器件数据手册、 IC替代型号，打造 电子元器件IC百科大全！
标签： 连接器xcd45t4k1p40电力电容电抗器限流电抗器xd1贴片电容cl05b102ko
首页 选型 品牌 购物车 我的 搜索 最近热搜 历史搜索 清除历史记录