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AESUtil.java
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103 lines (93 loc) · 3.1 KB
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package algorithm.security;
/**
*
* https://www.jianshu.com/p/2196a601d444
*
*
* @author 李文浩
* @version 2017/3/26.
*/
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;
/**
* Created by fangzhipeng on 2017/3/21.
*/
public class AESUtil {
static byte[] key = "w@#$4@#$s^&3*&^4".getBytes();
final static String algorithm = "AES";
public static String encrypt(String data) {
byte[] dataToSend = data.getBytes();
Cipher c = null;
try {
c = Cipher.getInstance(algorithm);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SecretKeySpec k = new SecretKeySpec(key, algorithm);
try {
c.init(Cipher.ENCRYPT_MODE, k);
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte[] encryptedData = "".getBytes();
try {
encryptedData = c.doFinal(dataToSend);
} catch (IllegalBlockSizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte[] encryptedByteValue = Base64.getEncoder().encode(encryptedData);
return new String(encryptedByteValue);//.toString();
}
public static String decrypt(String data) {
byte[] encryptedData = Base64.getDecoder().decode(data);
Cipher c = null;
try {
c = Cipher.getInstance(algorithm);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
SecretKeySpec k =
new SecretKeySpec(key, algorithm);
try {
c.init(Cipher.DECRYPT_MODE, k);
} catch (InvalidKeyException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
byte[] decrypted = null;
try {
decrypted = c.doFinal(encryptedData);
} catch (IllegalBlockSizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return new String(decrypted);
}
public static void main(String[] args) {
String password = encrypt("12233440988:1239874389888:dd333");
System.out.println(password);
System.out.println(decrypt(password));
}
}