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  • java AES加密算法

    package com.siro.tools;

    import javax.crypto.Cipher;
    import javax.crypto.spec.IvParameterSpec;
    import javax.crypto.spec.SecretKeySpec;

    import sun.misc.BASE64Decoder;
    import sun.misc.BASE64Encoder;

    public class AESPlus {

        public static String encrypt(String strKey, String strIn) throws Exception {
            SecretKeySpec skeySpec = getKey(strKey);
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            IvParameterSpec iv = new IvParameterSpec("0102030405060708".getBytes());
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
            byte[] encrypted = cipher.doFinal(strIn.getBytes());

            return new BASE64Encoder().encode(encrypted);
        }

        public static String decrypt(String strKey, String strIn) throws Exception {
            SecretKeySpec skeySpec = getKey(strKey);
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            IvParameterSpec iv = new IvParameterSpec("0102030405060708".getBytes());
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(strIn);

            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original);
            return originalString;
        }

        private static SecretKeySpec getKey(String strKey) throws Exception {
            byte[] arrBTmp = strKey.getBytes();
            byte[] arrB = new byte[16]; // 创建一个空的16位字节数组(默认值为0)

            for (int i = 0; i < arrBTmp.length && i < arrB.length; i++) {
                arrB[i] = arrBTmp[i];
            }

            SecretKeySpec skeySpec = new SecretKeySpec(arrB, "AES");

            return skeySpec;
        }

        public static void main(String[] args) throws Exception {
            String Code = "中文ABc123";
            String key = "1q2w3e4r";
            String codE;

            codE = AESPlus.encrypt(key, Code);

            System.out.println("原文:" + Code);
            System.out.println("密钥:" + key);
            System.out.println("密文:" + codE);
            System.out.println("解密:" + AESPlus.decrypt(key, codE));
        }
    }

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  • 原文地址:https://www.cnblogs.com/yuyue2014/p/4787718.html
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