import cn.hutool.crypto.symmetric.SymmetricCrypto;/*** @author : chenfan* @className : SM4Utils* @date : Created in /11/3 13:55* @description :国密算法SM4加解密工具类*//*** 国密SM4分组密码算法工具类（对称加密）*/public class SM4Utils {//SM4-加密public static String encryptSm4(String plaintext, String key) {//指明加密算法和秘钥SymmetricCrypto sm4 = new SymmetricCrypto("SM4/ECB/PKCS5Padding", key.getBytes());return sm4.encryptHex(plaintext);}//SM4-解密public static String decryptSm4(String ciphertext, String key) {//指明加密算法和秘钥SymmetricCrypto sm4 = new SymmetricCrypto("SM4/ECB/PKCS5Padding", key.getBytes());return sm4.decryptStr(ciphertext);}public static void main(String[] args) {String content = "Hello SM4 国密算法";String key = "pGmo2jZkrR8JqlQn";String plain = encryptSm4(content, key);String cipher = decryptSm4(plain, key);System.out.println(plain + "\n" + cipher);}}
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