groovy实现AES加解密

文章目录

1. 不推荐使用的 DES 加密
2. 如何使用 groovy 实现 AES 加解密

主题：

• 如何使用 groovy 实现 DES 加解密
• 如何使用 groovy 实现 AES 加解密

不推荐使用的 DES 加密

import java.security.*
import javax.crypto.*
import javax.crypto.spec.*

//不安全，不推荐使用了
class DESCodec {
	static encode = { String target ->
		def cipher = getCipher(Cipher.ENCRYPT_MODE)
		return cipher.doFinal(target.bytes).encodeBase64()
	}

	static decode = { String target ->
		def cipher = getCipher(Cipher.DECRYPT_MODE)
		return new String(cipher.doFinal(target.decodeBase64()))
	}

	private static getCipher(mode) {
		def keySpec = new DESKeySpec(getPassword())
		def cipher = Cipher.getInstance("DES")
		def keyFactory = SecretKeyFactory.getInstance("DES")
		cipher.init(mode, keyFactory.generateSecret(keySpec))
		return cipher
  	}
  	private static getPassword() { "password".getBytes("UTF-8") }
}
//具体使用案例
def encode=DESCodec.encode(this.args[0])
def decode=DESCodec.decode(encode.toString())
println encode
println decode

如何使用 groovy 实现 AES 加解密

import org.apache.commons.codec.binary.Base64;
//满足公司安全要求的 AES 加密算法
class AESCodec {
    public static String encrypt(String key, String initVector, String value) {
        try {
            IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
            SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
            byte[] encrypted = cipher.doFinal(value.getBytes());
            System.out.println("encrypted string: "+ Base64.encodeBase64String(encrypted));
            return Base64.encodeBase64String(encrypted);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return null;
    }

    public static String decrypt(String key, String initVector, String encrypted) {
        try {
            IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
            SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
            byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
            return new String(original);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return null;
    }
}
//具体使用案例
def key = "Bar12345Bar12345" // 128 bit key
def initVector = "RandomInitVector" // 16 bytes IV
def account=AESCodec.decrypt(key,initVector,properties.account)
def password=AESCodec.decrypt(key,initVector,properties.password)
println account
println password