package com.whyc.encryption;
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import org.bouncycastle.crypto.params.ECDomainParameters;
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import org.bouncycastle.math.ec.ECCurve;
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import org.bouncycastle.math.ec.ECPoint;
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import org.springframework.core.io.ClassPathResource;
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import java.io.*;
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import java.math.BigInteger;
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import java.security.SecureRandom;
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import java.util.Arrays;
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/**
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* SM2公钥加密算法实现 包括 -签名,验签 -密钥交换 -公钥加密,私钥解密
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*/
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public class SM2 {
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private static BigInteger n = new BigInteger(
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"FFFFFFFE" + "FFFFFFFF" + "FFFFFFFF" + "FFFFFFFF" + "7203DF6B" + "21C6052B" + "53BBF409" + "39D54123", 16);
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private static BigInteger p = new BigInteger(
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"FFFFFFFE" + "FFFFFFFF" + "FFFFFFFF" + "FFFFFFFF" + "FFFFFFFF" + "00000000" + "FFFFFFFF" + "FFFFFFFF", 16);
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private static BigInteger a = new BigInteger(
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"FFFFFFFE" + "FFFFFFFF" + "FFFFFFFF" + "FFFFFFFF" + "FFFFFFFF" + "00000000" + "FFFFFFFF" + "FFFFFFFC", 16);
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private static BigInteger b = new BigInteger(
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"28E9FA9E" + "9D9F5E34" + "4D5A9E4B" + "CF6509A7" + "F39789F5" + "15AB8F92" + "DDBCBD41" + "4D940E93", 16);
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private static BigInteger gx = new BigInteger(
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"32C4AE2C" + "1F198119" + "5F990446" + "6A39C994" + "8FE30BBF" + "F2660BE1" + "715A4589" + "334C74C7", 16);
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private static BigInteger gy = new BigInteger(
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"BC3736A2" + "F4F6779C" + "59BDCEE3" + "6B692153" + "D0A9877C" + "C62A4740" + "02DF32E5" + "2139F0A0", 16);
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private static ECDomainParameters ecc_bc_spec;
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private static int w = (int) Math.ceil(n.bitLength() * 1.0 / 2) - 1;
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private static BigInteger _2w = new BigInteger("2").pow(w);
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private static final int DIGEST_LENGTH = 32;
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private static SecureRandom random = new SecureRandom();
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private static ECCurve.Fp curve;
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private static ECPoint G;
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private boolean debug = false;
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static {
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curve = new ECCurve.Fp(p, // q
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a, // a
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b); // b
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G = curve.createPoint(gx, gy);
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ecc_bc_spec = new ECDomainParameters(curve, G, n);
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}
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public boolean isDebug() {
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return debug;
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}
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public void setDebug(boolean debug) {
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this.debug = debug;
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}
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/**
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* �?16进制打印字节数组
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*
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* @param b
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*/
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public static void printHexString(byte[] b) {
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for (int i = 0; i < b.length; i++) {
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String hex = Integer.toHexString(b[i] & 0xFF);
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if (hex.length() == 1) {
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hex = '0' + hex;
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}
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System.out.print(hex.toUpperCase());
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}
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System.out.println();
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}
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/**
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* 随机数生成器
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*
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* @param max
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* @return
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*/
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private static BigInteger random(BigInteger max) {
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BigInteger r = new BigInteger(256, random);
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// int count = 1;
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while (r.compareTo(max) >= 0) {
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r = new BigInteger(128, random);
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// count++;
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}
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// System.out.println("count: " + count);
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return r;
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}
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/**
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* 判断字节数组是否�?0
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*
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* @param buffer
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* @return
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*/
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private boolean allZero(byte[] buffer) {
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for (int i = 0; i < buffer.length; i++) {
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if (buffer[i] != 0)
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return false;
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}
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return true;
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}
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/**
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* 公钥加密
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*
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* @param input
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* 加密原文
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* @param publicKey
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* 公钥
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* @return
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*/
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public byte[] encrypt(String input, ECPoint publicKey) {
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byte[] inputBuffer = input.getBytes();
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if (debug)
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printHexString(inputBuffer);
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byte[] C1Buffer;
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ECPoint kpb;
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byte[] t;
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do {
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/* 1 产生随机数k，k属于[1, n-1] */
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BigInteger k = random(n);
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if (debug) {
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System.out.print("k: ");
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printHexString(k.toByteArray());
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}
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/* 2 计算椭圆曲线点C1 = [k]G = (x1, y1) */
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ECPoint C1 = G.multiply(k);
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C1Buffer = C1.getEncoded(false);
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if (debug) {
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System.out.print("C1: ");
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printHexString(C1Buffer);
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}
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/*
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* 3 计算椭圆曲线�? S = [h]Pb
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*/
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BigInteger h = ecc_bc_spec.getH();
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if (h != null) {
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ECPoint S = publicKey.multiply(h);
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if (S.isInfinity())
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throw new IllegalStateException();
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}
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/* 4 计算 [k]PB = (x2, y2) */
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kpb = publicKey.multiply(k).normalize();
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/* 5 计算 t = KDF(x2||y2, klen) */
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byte[] kpbBytes = kpb.getEncoded(false);
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t = KDF(kpbBytes, inputBuffer.length);
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// DerivationFunction kdf = new KDF1BytesGenerator(new
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// ShortenedDigest(new SHA256Digest(), DIGEST_LENGTH));
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//
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// t = new byte[inputBuffer.length];
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// kdf.init(new ISO18033KDFParameters(kpbBytes));
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// kdf.generateBytes(t, 0, t.length);
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} while (allZero(t));
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/* 6 计算C2=M^t */
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byte[] C2 = new byte[inputBuffer.length];
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for (int i = 0; i < inputBuffer.length; i++) {
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C2[i] = (byte) (inputBuffer[i] ^ t[i]);
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}
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/* 7 计算C3 = Hash(x2 || M || y2) */
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byte[] C3 = sm3hash(kpb.getXCoord().toBigInteger().toByteArray(), inputBuffer,
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kpb.getYCoord().toBigInteger().toByteArray());
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/* 8 输出密文 C=C1 || C2 || C3 */
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byte[] encryptResult = new byte[C1Buffer.length + C2.length + C3.length];
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System.arraycopy(C1Buffer, 0, encryptResult, 0, C1Buffer.length);
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System.arraycopy(C2, 0, encryptResult, C1Buffer.length, C2.length);
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System.arraycopy(C3, 0, encryptResult, C1Buffer.length + C2.length, C3.length);
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if (debug) {
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System.out.print("密文: ");
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printHexString(encryptResult);
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}
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return encryptResult;
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}
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/**
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* 私钥解密
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*
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* @param encryptData
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* 密文数据字节数组
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* @param privateKey
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* 解密私钥
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* @return
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*/
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public String decrypt(byte[] encryptData, BigInteger privateKey) {
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if (debug)
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System.out.println("encryptData length: " + encryptData.length);
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byte[] C1Byte = new byte[65];
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System.arraycopy(encryptData, 0, C1Byte, 0, C1Byte.length);
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ECPoint C1 = curve.decodePoint(C1Byte).normalize();
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/*
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* 计算椭圆曲线�? S = [h]C1 是否为无穷点
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*/
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BigInteger h = ecc_bc_spec.getH();
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if (h != null) {
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ECPoint S = C1.multiply(h);
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if (S.isInfinity())
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throw new IllegalStateException();
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}
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/* 计算[dB]C1 = (x2, y2) */
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ECPoint dBC1 = C1.multiply(privateKey).normalize();
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/* 计算t = KDF(x2 || y2, klen) */
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byte[] dBC1Bytes = dBC1.getEncoded(false);
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int klen = encryptData.length - 65 - DIGEST_LENGTH;
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byte[] t = KDF(dBC1Bytes, klen);
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// DerivationFunction kdf = new KDF1BytesGenerator(new
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// ShortenedDigest(new SHA256Digest(), DIGEST_LENGTH));
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// if (debug)
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// System.out.println("klen = " + klen);
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// kdf.init(new ISO18033KDFParameters(dBC1Bytes));
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// kdf.generateBytes(t, 0, t.length);
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if (allZero(t)) {
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System.err.println("all zero");
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throw new IllegalStateException();
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}
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/* 5 计算M'=C2^t */
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byte[] M = new byte[klen];
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for (int i = 0; i < M.length; i++) {
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M[i] = (byte) (encryptData[C1Byte.length + i] ^ t[i]);
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}
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if (debug)
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printHexString(M);
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/* 6 计算 u = Hash(x2 || M' || y2) 判断 u == C3是否成立 */
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byte[] C3 = new byte[DIGEST_LENGTH];
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if (debug)
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try {
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System.out.println("M = " + new String(M, "UTF8"));
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} catch (UnsupportedEncodingException e1) {
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e1.printStackTrace();
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}
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System.arraycopy(encryptData, encryptData.length - DIGEST_LENGTH, C3, 0, DIGEST_LENGTH);
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byte[] u = sm3hash(dBC1.getXCoord().toBigInteger().toByteArray(), M,
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dBC1.getYCoord().toBigInteger().toByteArray());
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if (Arrays.equals(u, C3)) {
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if (debug)
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System.out.println("解密成功");
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try {
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return new String(M, "UTF8");
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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return null;
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} else {
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if (debug) {
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System.out.print("u = ");
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printHexString(u);
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System.out.print("C3 = ");
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printHexString(C3);
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System.err.println("解密验证失败");
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}
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return null;
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}
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}
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// /**
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// * SHA摘要
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// * @param x2
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// * @param M
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// * @param y2
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// * @return
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// */
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// private byte[] calculateHash(BigInteger x2, byte[] M, BigInteger y2) {
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// ShortenedDigest digest = new ShortenedDigest(new SHA256Digest(),
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// DIGEST_LENGTH);
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// byte[] buf = x2.toByteArray();
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// digest.update(buf, 0, buf.length);
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// digest.update(M, 0, M.length);
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// buf = y2.toByteArray();
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// digest.update(buf, 0, buf.length);
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//
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// buf = new byte[DIGEST_LENGTH];
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// digest.doFinal(buf, 0);
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//
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// return buf;
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// }
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/**
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* 判断是否在范围内
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*
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* @param param
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* @param min
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* @param max
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* @return
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*/
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private boolean between(BigInteger param, BigInteger min, BigInteger max) {
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if (param.compareTo(min) >= 0 && param.compareTo(max) < 0) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* 判断生成的公钥是否合�?
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*
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* @param publicKey
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* @return
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*/
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private boolean checkPublicKey(ECPoint publicKey) {
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if (!publicKey.isInfinity()) {
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BigInteger x = publicKey.getXCoord().toBigInteger();
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BigInteger y = publicKey.getYCoord().toBigInteger();
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if (between(x, new BigInteger("0"), p) && between(y, new BigInteger("0"), p)) {
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BigInteger xResult = x.pow(3).add(a.multiply(x)).add(b).mod(p);
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if (debug)
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System.out.println("xResult: " + xResult.toString());
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BigInteger yResult = y.pow(2).mod(p);
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if (debug)
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System.out.println("yResult: " + yResult.toString());
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if (yResult.equals(xResult) && publicKey.multiply(n).isInfinity()) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* 生成密钥�?
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*
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* @return
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*/
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public SM2KeyPair generateKeyPair() {
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BigInteger d = random(n.subtract(new BigInteger("1")));
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SM2KeyPair keyPair = new SM2KeyPair(G.multiply(d).normalize(), d);
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if (checkPublicKey(keyPair.getPublicKey())) {
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if (debug)
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System.out.println("generate key successfully");
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return keyPair;
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} else {
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if (debug)
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System.err.println("generate key failed");
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return null;
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}
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}
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public SM2() {
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curve = new ECCurve.Fp(p, // q
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a, // a
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b); // b
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G = curve.createPoint(gx, gy);
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ecc_bc_spec = new ECDomainParameters(curve, G, n);
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}
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public SM2(boolean debug) {
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this();
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this.debug = debug;
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}
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/**
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* 导出公钥到本�?
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*
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* @param publicKey
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* @param path
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*/
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public void exportPublicKey(ECPoint publicKey, String path) {
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File file = new File(path);
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try {
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if (!file.exists())
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file.createNewFile();
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byte buffer[] = publicKey.getEncoded(false);
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FileOutputStream fos = new FileOutputStream(file);
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fos.write(buffer);
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fos.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 从本地导入公�?
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*
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* @param path
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* @return
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*/
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public ECPoint importPublicKey(String path) {
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File file = new File(path);
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try {
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if (!file.exists())
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return null;
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FileInputStream fis = new FileInputStream(file);
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte buffer[] = new byte[16];
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int size;
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while ((size = fis.read(buffer)) != -1) {
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baos.write(buffer, 0, size);
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}
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fis.close();
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return curve.decodePoint(baos.toByteArray());
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} catch (IOException e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 导出私钥到本�?
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*
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* @param privateKey
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* @param path
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*/
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public void exportPrivateKey(BigInteger privateKey, String path) {
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File file = new File(path);
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try {
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if (!file.exists())
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file.createNewFile();
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ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(file));
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oos.writeObject(privateKey);
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oos.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 从本地导入私�?
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*
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* @param path
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* @return
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*/
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public BigInteger importPrivateKey(String path) {
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File file = new File(path);
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try {
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if (!file.exists()) {
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return null;
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}
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FileInputStream fis = new FileInputStream(file);
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ObjectInputStream ois = new ObjectInputStream(fis);
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BigInteger res = (BigInteger) (ois.readObject());
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ois.close();
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fis.close();
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return res;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 字节数组拼接
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*
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* @param params
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* @return
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*/
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private static byte[] join(byte[]... params) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte[] res = null;
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try {
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for (int i = 0; i < params.length; i++) {
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baos.write(params[i]);
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}
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res = baos.toByteArray();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return res;
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}
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/**
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* sm3摘要
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*
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* @param params
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* @return
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*/
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private static byte[] sm3hash(byte[]... params) {
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byte[] res = null;
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try {
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res = SM3.hash(join(params));
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} catch (IOException e) {
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e.printStackTrace();
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}
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return res;
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}
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/**
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* 取得用户标识字节数组
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*
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* @param IDA
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* @param aPublicKey
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* @return
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*/
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private static byte[] ZA(String IDA, ECPoint aPublicKey) {
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byte[] idaBytes = IDA.getBytes();
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int entlenA = idaBytes.length * 8;
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byte[] ENTLA = new byte[] { (byte) (entlenA & 0xFF00), (byte) (entlenA & 0x00FF) };
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byte[] ZA = sm3hash(ENTLA, idaBytes, a.toByteArray(), b.toByteArray(), gx.toByteArray(), gy.toByteArray(),
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aPublicKey.getXCoord().toBigInteger().toByteArray(),
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aPublicKey.getYCoord().toBigInteger().toByteArray());
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return ZA;
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}
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/**
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* 签名
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*
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* @param M
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* 签名信息
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* @param IDA
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* 签名方唯�?标识
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* @param keyPair
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* 签名方密钥对
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* @return 签名
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*/
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public Signature sign(String M, String IDA, SM2KeyPair keyPair) {
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byte[] ZA = ZA(IDA, keyPair.getPublicKey());
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byte[] M_ = join(ZA, M.getBytes());
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BigInteger e = new BigInteger(1, sm3hash(M_));
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// BigInteger k = new BigInteger(
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// "6CB28D99 385C175C 94F94E93 4817663F C176D925 DD72B727 260DBAAE
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// 1FB2F96F".replace(" ", ""), 16);
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BigInteger k;
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BigInteger r;
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do {
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k = random(n);
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ECPoint p1 = G.multiply(k).normalize();
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BigInteger x1 = p1.getXCoord().toBigInteger();
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r = e.add(x1);
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r = r.mod(n);
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} while (r.equals(BigInteger.ZERO) || r.add(k).equals(n));
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BigInteger s = ((keyPair.getPrivateKey().add(BigInteger.ONE).modInverse(n))
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.multiply((k.subtract(r.multiply(keyPair.getPrivateKey()))).mod(n))).mod(n);
|
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return new Signature(r, s);
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}
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/**
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* 验签
|
*
|
* @param M
|
* 签名信息
|
* @param signature
|
* 签名
|
* @param IDA
|
* 签名方唯�?标识
|
* @param aPublicKey
|
* 签名方公�?
|
* @return true or false
|
*/
|
public boolean verify(String M, Signature signature, String IDA, ECPoint aPublicKey) {
|
if (!between(signature.r, BigInteger.ONE, n))
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return false;
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if (!between(signature.s, BigInteger.ONE, n))
|
return false;
|
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byte[] M_ = join(ZA(IDA, aPublicKey), M.getBytes());
|
BigInteger e = new BigInteger(1, sm3hash(M_));
|
BigInteger t = signature.r.add(signature.s).mod(n);
|
|
if (t.equals(BigInteger.ZERO))
|
return false;
|
|
ECPoint p1 = G.multiply(signature.s).normalize();
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ECPoint p2 = aPublicKey.multiply(t).normalize();
|
BigInteger x1 = p1.add(p2).normalize().getXCoord().toBigInteger();
|
BigInteger R = e.add(x1).mod(n);
|
if (R.equals(signature.r))
|
return true;
|
return false;
|
}
|
|
/**
|
* 密钥派生函数
|
*
|
* @param Z
|
* @param klen
|
* 生成klen字节数长度的密钥
|
* @return
|
*/
|
private static byte[] KDF(byte[] Z, int klen) {
|
int ct = 1;
|
int end = (int) Math.ceil(klen * 1.0 / 32);
|
ByteArrayOutputStream baos = new ByteArrayOutputStream();
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try {
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for (int i = 1; i < end; i++) {
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baos.write(sm3hash(Z, SM3.toByteArray(ct)));
|
ct++;
|
}
|
byte[] last = sm3hash(Z, SM3.toByteArray(ct));
|
if (klen % 32 == 0) {
|
baos.write(last);
|
} else
|
baos.write(last, 0, klen % 32);
|
return baos.toByteArray();
|
} catch (Exception e) {
|
e.printStackTrace();
|
}
|
return null;
|
}
|
|
/**
|
* 传输实体�?
|
*
|
* @author Potato
|
*
|
*/
|
private static class TransportEntity implements Serializable {
|
final byte[] R; //R�?
|
final byte[] S; //验证S
|
final byte[] Z; //用户标识
|
final byte[] K; //公钥
|
|
public TransportEntity(byte[] r, byte[] s,byte[] z,ECPoint pKey) {
|
R = r;
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S = s;
|
Z=z;
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K=pKey.getEncoded(false);
|
}
|
}
|
|
/**
|
* 密钥协商辅助�?
|
*
|
* @author Potato
|
*
|
*/
|
public static class KeyExchange {
|
BigInteger rA;
|
ECPoint RA;
|
ECPoint V;
|
byte[] Z;
|
byte[] key;
|
|
String ID;
|
SM2KeyPair keyPair;
|
|
public KeyExchange(String ID, SM2KeyPair keyPair) {
|
this.ID=ID;
|
this.keyPair = keyPair;
|
this.Z=ZA(ID, keyPair.getPublicKey());
|
}
|
|
/**
|
* 密钥协商发起第一�?
|
*
|
* @return
|
*/
|
public TransportEntity keyExchange_1() {
|
rA = random(n);
|
// rA=new BigInteger("83A2C9C8 B96E5AF7 0BD480B4 72409A9A 327257F1
|
// EBB73F5B 073354B2 48668563".replace(" ", ""),16);
|
RA = G.multiply(rA).normalize();
|
return new TransportEntity(RA.getEncoded(false), null,Z,keyPair.getPublicKey());
|
}
|
|
/**
|
* 密钥协商响应�?
|
*
|
* @param entity 传输实体
|
* @return
|
*/
|
public TransportEntity keyExchange_2(TransportEntity entity) {
|
BigInteger rB = random(n);
|
// BigInteger rB=new BigInteger("33FE2194 0342161C 55619C4A 0C060293
|
// D543C80A F19748CE 176D8347 7DE71C80".replace(" ", ""),16);
|
ECPoint RB = G.multiply(rB).normalize();
|
|
this.rA=rB;
|
this.RA=RB;
|
|
BigInteger x2 = RB.getXCoord().toBigInteger();
|
x2 = _2w.add(x2.and(_2w.subtract(BigInteger.ONE)));
|
|
BigInteger tB = keyPair.getPrivateKey().add(x2.multiply(rB)).mod(n);
|
ECPoint RA = curve.decodePoint(entity.R).normalize();
|
|
BigInteger x1 = RA.getXCoord().toBigInteger();
|
x1 = _2w.add(x1.and(_2w.subtract(BigInteger.ONE)));
|
|
ECPoint aPublicKey=curve.decodePoint(entity.K).normalize();
|
ECPoint temp = aPublicKey.add(RA.multiply(x1).normalize()).normalize();
|
ECPoint V = temp.multiply(ecc_bc_spec.getH().multiply(tB)).normalize();
|
if (V.isInfinity())
|
throw new IllegalStateException();
|
this.V=V;
|
|
byte[] xV = V.getXCoord().toBigInteger().toByteArray();
|
byte[] yV = V.getYCoord().toBigInteger().toByteArray();
|
byte[] KB = KDF(join(xV, yV, entity.Z, this.Z), 16);
|
key = KB;
|
System.out.print("协商得B密钥:");
|
printHexString(KB);
|
byte[] sB = sm3hash(new byte[] { 0x02 }, yV,
|
sm3hash(xV, entity.Z, this.Z, RA.getXCoord().toBigInteger().toByteArray(),
|
RA.getYCoord().toBigInteger().toByteArray(), RB.getXCoord().toBigInteger().toByteArray(),
|
RB.getYCoord().toBigInteger().toByteArray()));
|
return new TransportEntity(RB.getEncoded(false), sB,this.Z,keyPair.getPublicKey());
|
}
|
|
/**
|
* 密钥协商发起方第二�
|
*
|
* @param entity 传输实体
|
*/
|
public TransportEntity keyExchange_3(TransportEntity entity) {
|
BigInteger x1 = RA.getXCoord().toBigInteger();
|
x1 = _2w.add(x1.and(_2w.subtract(BigInteger.ONE)));
|
|
BigInteger tA = keyPair.getPrivateKey().add(x1.multiply(rA)).mod(n);
|
ECPoint RB = curve.decodePoint(entity.R).normalize();
|
|
BigInteger x2 = RB.getXCoord().toBigInteger();
|
x2 = _2w.add(x2.and(_2w.subtract(BigInteger.ONE)));
|
|
ECPoint bPublicKey=curve.decodePoint(entity.K).normalize();
|
ECPoint temp = bPublicKey.add(RB.multiply(x2).normalize()).normalize();
|
ECPoint U = temp.multiply(ecc_bc_spec.getH().multiply(tA)).normalize();
|
if (U.isInfinity())
|
throw new IllegalStateException();
|
this.V=U;
|
|
byte[] xU = U.getXCoord().toBigInteger().toByteArray();
|
byte[] yU = U.getYCoord().toBigInteger().toByteArray();
|
byte[] KA = KDF(join(xU, yU,
|
this.Z, entity.Z), 16);
|
key = KA;
|
System.out.print("协商得A密钥:");
|
printHexString(KA);
|
byte[] s1= sm3hash(new byte[] { 0x02 }, yU,
|
sm3hash(xU, this.Z, entity.Z, RA.getXCoord().toBigInteger().toByteArray(),
|
RA.getYCoord().toBigInteger().toByteArray(), RB.getXCoord().toBigInteger().toByteArray(),
|
RB.getYCoord().toBigInteger().toByteArray()));
|
if(Arrays.equals(entity.S, s1))
|
System.out.println("B->A 密钥确认成功");
|
else
|
System.out.println("B->A 密钥确认失败");
|
byte[] sA= sm3hash(new byte[] { 0x03 }, yU,
|
sm3hash(xU, this.Z, entity.Z, RA.getXCoord().toBigInteger().toByteArray(),
|
RA.getYCoord().toBigInteger().toByteArray(), RB.getXCoord().toBigInteger().toByteArray(),
|
RB.getYCoord().toBigInteger().toByteArray()));
|
|
return new TransportEntity(RA.getEncoded(false), sA,this.Z,keyPair.getPublicKey());
|
}
|
|
/**
|
* 密钥确认�?后一�?
|
*
|
* @param entity 传输实体
|
*/
|
public void keyExchange_4(TransportEntity entity) {
|
byte[] xV = V.getXCoord().toBigInteger().toByteArray();
|
byte[] yV = V.getYCoord().toBigInteger().toByteArray();
|
ECPoint RA = curve.decodePoint(entity.R).normalize();
|
byte[] s2= sm3hash(new byte[] { 0x03 }, yV,
|
sm3hash(xV, entity.Z, this.Z, RA.getXCoord().toBigInteger().toByteArray(),
|
RA.getYCoord().toBigInteger().toByteArray(), this.RA.getXCoord().toBigInteger().toByteArray(),
|
this.RA.getYCoord().toBigInteger().toByteArray()));
|
if(Arrays.equals(entity.S, s2))
|
System.out.println("A->B 密钥确认成功");
|
else
|
System.out.println("A->B 密钥确认失败");
|
}
|
}
|
|
/**
|
* 获取私钥
|
* @return
|
*/
|
public static BigInteger getPrivateKey(){
|
ClassPathResource classPathResource = new ClassPathResource("/config/pri_key.ksm");
|
InputStream inputStream = null;
|
try {
|
inputStream = classPathResource.getInputStream();
|
ObjectInputStream ois = new ObjectInputStream(inputStream);
|
BigInteger res = (BigInteger) (ois.readObject());
|
ois.close();
|
return res;
|
} catch (IOException | ClassNotFoundException e) {
|
e.printStackTrace();
|
return null;
|
}
|
}
|
|
/**
|
* 获取公钥
|
* @return
|
*/
|
public static ECPoint getPublicKey(){
|
try {
|
ClassPathResource classPathResource = new ClassPathResource("/config/pub_key.ksm");
|
InputStream inputStream = classPathResource.getInputStream();
|
ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
|
byte buffer[] = new byte[16];
|
int size;
|
while ((size = inputStream.read(buffer)) != -1) {
|
baos.write(buffer, 0, size);
|
}
|
inputStream.close();
|
return curve.decodePoint(baos.toByteArray());
|
}catch (IOException e) {
|
e.printStackTrace();
|
return null;
|
}
|
}
|
|
public static void main(String[] args) throws UnsupportedEncodingException {
|
|
SM2 sm02 = new SM2();
|
//BigInteger privateKey = sm02.importPrivateKey(ClassUtils.getDefaultClassLoader().getResource("").getPath() + "config/pri_key.ksm");
|
//ECPoint publicKey = sm02.importPublicKey(ClassUtils.getDefaultClassLoader().getResource("").getPath() + "config/pri_key.ksm");
|
|
BigInteger privateKey2 = sm02.getPrivateKey();
|
privateKey2 = privateKey2.add(new BigInteger("1"));
|
ECPoint publicKey2 = sm02.getPublicKey();
|
|
byte[] encrypt = sm02.encrypt("123456", publicKey2);
|
String decrypt = sm02.decrypt(encrypt, privateKey2);
|
System.out.println(decrypt);
|
//System.out.println(privateKey);
|
//System.out.println(publicKey);
|
|
//System.out.println(privateKey2);
|
//System.out.println(publicKey2);
|
/*
|
BigInteger px = new BigInteger(
|
"0AE4C779 8AA0F119 471BEE11 825BE462 02BB79E2 A5844495 E97C04FF 4DF2548A".replace(" ", ""), 16);
|
BigInteger py = new BigInteger(
|
"7C0240F8 8F1CD4E1 6352A73C 17B7F16F 07353E53 A176D684 A9FE0C6B B798E857".replace(" ", ""), 16);
|
ECPoint publicKey = sm02.curve.createPoint(px, py);
|
BigInteger privateKey = new BigInteger(
|
"128B2FA8 BD433C6C 068C8D80 3DFF7979 2A519A55 171B1B65 0C23661D 15897263".replace(" ", ""), 16);
|
*/
|
/*SM2KeyPair keyPair = sm02.generateKeyPair();
|
ECPoint publicKey=keyPair.getPublicKey();
|
BigInteger privateKey=keyPair.getPrivateKey();
|
sm02.exportPublicKey(publicKey, "E:/publickey.pem");
|
sm02.exportPrivateKey(privateKey, "E:/privatekey.pem");
|
|
System.out.println("-----------------公钥加密与解�?-----------------");
|
*//*ECPoint*//* publicKey = sm02.importPublicKey("E:/publickey.pem");
|
*//*BigInteger*//* privateKey = sm02.importPrivateKey("E:/privatekey.pem");
|
byte[] data = sm02.encrypt("测试加密aaaaaaaaaaa123aabb", publicKey);
|
System.out.print("密文:");
|
SM2.printHexString(data);
|
System.out.println("解密后明�?:" + sm02.decrypt(data, privateKey));
|
|
System.out.println("-----------------签名与验�?-----------------");
|
String IDA = "Heartbeats";
|
String M = "要签名的信息";
|
Signature signature = sm02.sign(M, IDA, new SM2KeyPair(publicKey, privateKey));
|
System.out.println("用户标识:" + IDA);
|
System.out.println("签名信息:" + M);
|
System.out.println("数字签名:" + signature);
|
System.out.println("验证签名:" + sm02.verify(M, signature, IDA, publicKey));
|
|
System.out.println("-----------------密钥协商-----------------");
|
String aID = "AAAAAAAAAAAAA";
|
SM2KeyPair aKeyPair = sm02.generateKeyPair();
|
KeyExchange aKeyExchange = new KeyExchange(aID,aKeyPair);
|
|
String bID = "BBBBBBBBBBBBB";
|
SM2KeyPair bKeyPair = sm02.generateKeyPair();
|
KeyExchange bKeyExchange = new KeyExchange(bID,bKeyPair);
|
TransportEntity entity1 = aKeyExchange.keyExchange_1();
|
TransportEntity entity2 = bKeyExchange.keyExchange_2(entity1);
|
TransportEntity entity3 = aKeyExchange.keyExchange_3(entity2);
|
bKeyExchange.keyExchange_4(entity3);*/
|
}
|
|
public static class Signature {
|
BigInteger r;
|
BigInteger s;
|
|
public Signature(BigInteger r, BigInteger s) {
|
this.r = r;
|
this.s = s;
|
}
|
|
public String toString() {
|
return r.toString(16) + "," + s.toString(16);
|
}
|
}
|
}
|
