package com.imooc.security.des;
import java.security.Key;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import org.apache.commons.codec.binary.Base64;
public class Imooc3DES {
private static String src = "cakin24 security 3des";
public static void main(String[] args) {
jdk3DES();
}
public static void jdk3DES() {
try {
//生成KEY KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede");
//keyGenerator.init(168);
keyGenerator.init(new SecureRandom());
//默认长度 SecretKey secretKey = keyGenerator.generateKey();
byte[] bytesKey = secretKey.getEncoded();
//KEY转换 DESedeKeySpec desedeKeySpec = new DESedeKeySpec(bytesKey);
SecretKeyFactory factory = SecretKeyFactory.getInstance("DESede");
Key convertSecretKey = factory.generateSecret(desedeKeySpec);
//加密 Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, convertSecretKey);
byte[] result = cipher.doFinal(src.getBytes());
System.out.println("jdk 3des encrypt : " + Base64.encodeBase64String(result));
//解密 cipher.init(Cipher.DECRYPT_MODE, convertSecretKey);
result = cipher.doFinal(result);
System.out.println("jdk 3des decrypt : " + new String(result));
}
catch (Exception e) {
e.printStackTrace();
}
}
}