java_aes

[root@apc01 tmp]# java AesCryptTest passCryptoPrmChs ncfeKKfPYedihJas

PLAIN TEXT: (･ω･`U)

length: 2147483647

ENCRYPTED : g9pBOTSQhGQ6vGPKOUkPSA==

DECRYPTED : (･ω･`U)

import java.util.Base64;

import javax.crypto.Cipher;

import javax.crypto.SecretKey;

import javax.crypto.spec.IvParameterSpec;

import javax.crypto.spec.SecretKeySpec;

public class AesCryptTest {

public static void main(String[] args) {

try {

String plainText = "(･ω･`U)";

System.out.println("PLAIN TEXT: " + plainText);

byte[] key = args[0].getBytes();

byte[] iv = args[1].getBytes();

SecretKey cipherKey = new SecretKeySpec(key, "AES");

int length = Cipher.getMaxAllowedKeyLength("AES");

System.out.println("length: " + length);

IvParameterSpec ivSpec = new IvParameterSpec(iv);

Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

cipher.init(Cipher.ENCRYPT_MODE, cipherKey, ivSpec);

byte[] encrypt = cipher.doFinal(plainText.getBytes());

System.out.println("ENCRYPTED : " + Base64.getEncoder().encodeToString(encrypt));

cipher.init(Cipher.DECRYPT_MODE, cipherKey, ivSpec);

byte[] decrypt = cipher.doFinal(encrypt);

System.out.println("DECRYPTED : " + new String(decrypt));

} catch (Exception e) {

e.printStackTrace();

}

}

}