自己写的AES加密工具类的加密结果为什么与在线AES加密网站的加密结果不一致?
错误:java.security.InvalidKeyException: Illegal key size or default parameters解决方法
Java Security: Illegal key size or default parameters?
使用AES时出现 Illegal key size or default parameters 时的解决办法
工具类:
import java.math.BigInteger; import java.security.MessageDigest; import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import org.apache.commons.lang3.StringUtils; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class AES { public static void main(String[] args) throws Exception { String content = "beginTime=-1&endTime=1462032000&partner_id=10&status=1,2,3,4,5,50"; String key = "d5e774de46f53ffeae8623ac47ca3334"; //System.out.println("加密密钥和解密密钥:" + key); String encrypt = aesEncrypt(content, key); encrypt = encrypt.replaceAll("\\s|\\r|\\n|\\t", ""); System.out.println("加密后:" + encrypt); String decrypt = aesDecrypt(encrypt, key); System.out.println("解密后:" + decrypt); System.out.println(System.currentTimeMillis() / 1000); } /** * 将byte[]转为各种进制的字符串 * @param bytes byte[] * @param radix 可以转换进制的范围,从Character.MIN_RADIX到Character.MAX_RADIX,超出范围后变为10进制 * @return 转换后的字符串 */ public static String binary(byte[] bytes, int radix){ return new BigInteger(1, bytes).toString(radix);// 这里的1代表正数 } /** * base 64 encode * @param bytes 待编码的byte[] * @return 编码后的base 64 code */ public static String base64Encode(byte[] bytes){ return new BASE64Encoder().encode(bytes); } /** * base 64 decode * @param base64Code 待解码的base 64 code * @return 解码后的byte[] * @throws Exception */ public static byte[] base64Decode(String base64Code) throws Exception{ return StringUtils.isEmpty(base64Code) ? null : new BASE64Decoder().decodeBuffer(base64Code); } /** * 获取byte[]的md5值 * @param bytes byte[] * @return md5 * @throws Exception */ public static byte[] md5(byte[] bytes) throws Exception { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(bytes); return md.digest(); } /** * 获取字符串md5值 * @param msg * @return md5 * @throws Exception */ public static byte[] md5(String msg) throws Exception { return StringUtils.isEmpty(msg) ? null : md5(msg.getBytes()); } /** * 结合base64实现md5加密 * @param msg 待加密字符串 * @return 获取md5后转为base64 * @throws Exception */ public static String md5Encrypt(String msg) throws Exception{ return StringUtils.isEmpty(msg) ? null : base64Encode(md5(msg)); } /** * AES加密 * @param content 待加密的内容 * @param encryptKey 加密密钥 * @return 加密后的byte[] * @throws Exception */ public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(encryptKey.getBytes())); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); //cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES")); //cipher.init(Cipher.ENCRYPT_MODE, new IvParameterSpec(encryptKey.getBytes("UTF-8"))); //KeyGenerator kgen = KeyGenerator.getInstance("AES"); //kgen.init(128, new SecureRandom(encryptKey.getBytes())); //Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes("UTF-8"), "AES")); return cipher.doFinal(content.getBytes("utf-8")); } /** * AES加密为base 64 code * @param content 待加密的内容 * @param encryptKey 加密密钥 * @return 加密后的base 64 code * @throws Exception */ public static String aesEncrypt(String content, String encryptKey) throws Exception { return base64Encode(aesEncryptToBytes(content, encryptKey)); } /** * AES解密 * @param encryptBytes 待解密的byte[] * @param decryptKey 解密密钥 * @return 解密后的String * @throws Exception */ public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(decryptKey.getBytes())); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); //cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES")); cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes("UTF-8"), "AES")); byte[] decryptBytes = cipher.doFinal(encryptBytes); return new String(decryptBytes); } /** * 将base 64 code AES解密 * @param encryptStr 待解密的base 64 code * @param decryptKey 解密密钥 * @return 解密后的string * @throws Exception */ public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception { return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey); } }