Java AES Encrypt aesEncrypt(String content, String key)

Description

aes Encrypt

License

Apache License

Declaration

public static String aesEncrypt(String content, String key) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;

import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;

import javax.crypto.spec.SecretKeySpec;

public class Main {

    public static String aesEncrypt(String content, String key) {
        try {//from   ww  w . ja  v a 2s .  com
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(128, new SecureRandom(key.getBytes()));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
            Cipher cipher = Cipher.getInstance("AES");
            byte[] byteContent = content.getBytes("utf-8");
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
            byte[] byteRresult = cipher.doFinal(byteContent);
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < byteRresult.length; i++) {
                String hex = Integer.toHexString(byteRresult[i] & 0xFF);
                if (hex.length() == 1) {
                    hex = '0' + hex;
                }
                sb.append(hex.toUpperCase());
            }
            return sb.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return null;
    }
}

Related

1. aesEncrypt(byte[] source, Key key)
2. aesEncrypt(String content, String encryptKey)
3. aesEncryptBytes(byte[] pBytes, SecretKeySpec pKeySpec, IvParameterSpec ivParameterSpec)
4. aesEncryptToBytes(String content, String encryptKey)