encryption key generator aes

With the development of symmetric cipher, the DES data Encryption Standard algorithm, because of its small key length (56 bits), has not adapted to the requirements of today's distributed open Network for data encryption security, so 1997 NIST

Package Demo.security;import Java.io.ioexception;import java.io.unsupportedencodingexception;import Java.security.invalidkeyexception;import Java.security.nosuchalgorithmexception;import Java.security.securerandom;import Java.util.base64;import Java.

AES symmetric encryption and decryption

AES symmetric encryption and decryption code detailed introduction, for your reference, the specific content as follows   Package demo.security; Import java.io.IOException; Import java.io.UnsupportedEncodingException; Import

Packagedemo.security;Importjava.io.IOException;Importjava.io.UnsupportedEncodingException;Importjava.security.InvalidKeyException;Importjava.security.NoSuchAlgorithmException;ImportJava.security.SecureRandom;Importjava.util.Base64;ImportJava.util.Sca

Http://www.tuicool.com/articles/nERnqe Http://www.cnblogs.com/AloneSword/p/3485912.html "Here is a detailed description of the specific symmetric and asymmetric algorithms" AES encryption and decryption inside C # C # code written in Visual

Symmetric encryption algorithmDefinition: In the symmetric encryption algorithm, the sender of the data sends the plaintext (raw data) and the encryption key (Mi Yue) together with a special encryption algorithm, which makes it into a complex cipher

The development project needs to cache important data locally so that it is read offline, and if the data is not processed, it can easily cause loss. Therefore, we generally encrypt this kind of data. Here, we mainly introduce two kinds of simple

Original address: http://www.moye.me/2015/06/14/cryptography_rsa/IntroductionFor the addition and decryption, I have been in a knowledge of its reason why the state, the core part of the project does not rely on encryption and decryption algorithm,

Package cn.itcast.coderUtils;Import Java.security.Key;Import Javax.crypto.Cipher;Import Javax.crypto.KeyGenerator;Import Javax.crypto.SecretKey;Import Javax.crypto.spec.SecretKeySpec;public class Aescoder {public static final String key_algorithm = "