使用 添加依赖 com.github.gitveio gmssl-dev 1.0 示例 GmSSL gmSSL = new GmSSL(); // SMS4加解密，替换des.. byte[] key = {1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8}; byte[] iv = {1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8}; byte[] s1 = gmSSL.symmetricEncrypt("SMS4", "1234566