des的加密和解密（无Base64的转码）

最新推荐文章于 2022-08-12 23:00:00 发布

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最新推荐文章于 2022-08-12 23:00:00 发布

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CC 4.0 BY-SA版权

文章标签： python

原文链接：https://my.oschina.net/u/586113/blog/118075

本文提供了一个使用Java实现DES/CBC/PKCS5Padding加密与解密的具体示例代码。该示例展示了如何通过指定密钥进行数据加密及后续的解密过程，适用于需要对敏感数据进行安全保护的应用场景。

2019独角兽企业重金招聘Python工程师标准>>>

--加密

public static byte[] encrypt(String message, String key)

throws Exception {
Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
BASE64Decoder base64Decoder = new BASE64Decoder();
return cipher.doFinal(message.getBytes("UTF-8"));

}

--解密

public static String decrypt(String message, String key)
throws Exception {
byte[] bytesrc = stringToBytes(message);
Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
byte[] retByte = cipher.doFinal(bytesrc);
BASE64Decoder base64Decoder = new BASE64Decoder();
byte[] pasByte = deCipher.doFinal(base64Decoder.decodeBuffer(data));
//return new String(pasByte, "UTF-8");
return new String(retByte, "UTF-8");
}