Maven依赖
<dependency><groupId>org.bouncycastle</groupId><artifactId>bcprov-jdk15on</artifactId><version>1.56</version>
</dependency>
SM3Utils
import org.bouncycastle.crypto.digests.SM3Digest;
import org.bouncycastle.crypto.macs.HMac;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.pqc.math.linearalgebra.ByteUtils;import java.io.UnsupportedEncodingException;
import java.security.Security;
import java.util.Arrays;public class SM3Utils {private static final String ENCODING = "UTF-8";static {Security.addProvider(new BouncyCastleProvider());}/*** sm3算法加密* @explain* @param paramStr 待加密字符串* @return 返回加密后，固定长度=32的16进制字符串*/public static String encrypt(String paramStr){// 将返回的hash值转换成16进制字符串String resultHexString = "";try {// 将字符串转换成byte数组byte[] srcData = paramStr.getBytes(ENCODING);// 调用hash()byte[] resultHash = hash(srcData);// 将返回的hash值转换成16进制字符串resultHexString = ByteUtils.toHexString(resultHash);} catch (UnsupportedEncodingException e) {e.printStackTrace();}return resultHexString;}/*** 返回长度=32的byte数组* @explain 生成对应的hash值* @param srcData* @return*/public static byte[] hash(byte[] srcData) {SM3Digest digest = new SM3Digest();digest.update(srcData, 0, srcData.length);byte[] hash = new byte[digest.getDigestSize()];digest.doFinal(hash, 0);return hash;}/*** sm3算法加密* @explain* @param paramStr 待加密字符串* @param key 密钥* @return 返回加密后，固定长度=32的16进制字符串*/public static String encryptPlus(String paramStr,String key){// 将返回的hash值转换成16进制字符串String resultHexString = "";try {// 将字符串转换成byte数组byte[] srcData = paramStr.getBytes(ENCODING);// 调用hash()byte[] resultHash = hmac(srcData,key.getBytes(ENCODING));// 将返回的hash值转换成16进制字符串resultHexString = ByteUtils.toHexString(resultHash);} catch (UnsupportedEncodingException e) {e.printStackTrace();}return resultHexString;}/*** 通过密钥进行加密* @explain 指定密钥进行加密* @param key 密钥* @param srcData 被加密的byte数组* @return*/public static byte[] hmac(byte[] key, byte[] srcData) {KeyParameter keyParameter = new KeyParameter(key);SM3Digest digest = new SM3Digest();HMac mac = new HMac(digest);mac.init(keyParameter);mac.update(srcData, 0, srcData.length);byte[] result = new byte[mac.getMacSize()];mac.doFinal(result, 0);return result;}/*** 判断源数据与加密数据是否一致* @explain 通过验证原数组和生成的hash数组是否为同一数组，验证2者是否为同一数据* @param srcStr 原字符串* @param sm3HexString 16进制字符串* @return 校验结果*/public static boolean verify(String srcStr, String sm3HexString) {boolean flag = false;try {byte[] srcData = srcStr.getBytes(ENCODING);byte[] sm3Hash = ByteUtils.fromHexString(sm3HexString);byte[] newHash = hash(srcData);if (Arrays.equals(newHash, sm3Hash)){flag = true;}} catch (UnsupportedEncodingException e) {e.printStackTrace();}return flag;}public static void main(String[] args) {String str = "{\"test\":\"001\"}";//秘钥String key = "key";String hex = SM3Utils.encryptPlus(str,key);System.out.println("参数:" + str);System.out.println("密文:" + hex);}}
