Created
February 15, 2011 14:35
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package com.mysite.aes; | |
import javax.crypto.*; | |
import javax.crypto.spec.*; | |
public class AES { | |
static String key = "Z7Y74jNe43F3o15T"; // must be 16-bytes | |
static String iv = "P0LrHf3nkBo7z46f"; | |
public static String Encrypt(String stringToEncrypt) { | |
String stringTmp = stringToEncrypt.trim(); | |
byte[] encrypted = null; | |
try { | |
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES"); | |
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes("UTF8")); | |
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING"); | |
cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec); | |
encrypted = cipher.doFinal(stringTmp.getBytes("UTF8")); | |
}catch (Exception e) {} | |
return bytesToHex(encrypted); | |
} | |
public static String Decrypt(String stringToDecrypt) { | |
String stringTmp = stringToDecrypt.trim(); | |
byte[] outText = null; | |
try { | |
SecretKeySpec keySpec = new SecretKeySpec(key.getBytes("UTF8"), "AES"); | |
IvParameterSpec ivSpec = new IvParameterSpec(iv.getBytes("UTF8")); | |
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING"); | |
cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec); | |
outText = cipher.doFinal(hexToBytes(stringTmp)); | |
} catch (Exception e) {} | |
return new String(outText).trim(); | |
} | |
public static String bytesToHex(byte[] data) { | |
if (data==null) { | |
return null; | |
} else { | |
int len = data.length; | |
String str = ""; | |
for (int i=0; i<len; i++) { | |
if ((data[i]&0xFF)<16) { | |
str = str + "0" + java.lang.Integer.toHexString(data[i]&0xFF); | |
} else { | |
str = str + java.lang.Integer.toHexString(data[i]&0xFF); | |
} | |
} | |
return str; | |
} | |
} | |
public static byte[] hexToBytes(String str) { | |
if (str==null) { | |
return null; | |
} else if (str.length() < 2) { | |
return null; | |
} else { | |
int len = str.length() / 2; | |
byte[] buffer = new byte[len]; | |
for (int i=0; i<len; i++) { | |
buffer[i] = (byte) Integer.parseInt(str.substring(i*2,i*2+2),16); | |
} | |
return buffer; | |
} | |
} | |
} |
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