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package PostPager;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import org.springframework.util.Base64Utils;
public class Demo01 {
public static void main(String[] args) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
String clearText = "helloWord";
// 要求秘钥8个字节
String originKey = "15425845";
String cipherText = desencript(clearText,originKey);
System.out.println(cipherText);
}
private static String desencript(String clearText, String originKey) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
// 获取加密算法工具
Cipher cipher = Cipher.getInstance("DES");
// 对加密工具类对象进行初始化
SecretKeySpec secretKeySpec = new SecretKeySpec(originKey.getBytes(), "DES");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
// 用加密工具类对象对明文进行加密
byte[] doFinal = cipher.doFinal(clearText.getBytes());
return Base64Utils.encodeToString(doFinal);
}
// 解密方法和加密相似,先用Base64解码,再用相同的密匙解密就可以了
}
package PostPager;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import org.springframework.util.Base64Utils;
public class Demo02 {
public static void main(String[] args) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
String clearText = "helloWord";
// DES要求秘钥8个字节 AES一般要求密匙16个字节
String originKey = "1542584545125895";
String cipherText = AESencript(clearText,originKey);
System.out.println(cipherText);
}
private static String AESencript(String clearText, String originKey) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
// 获取加密算法工具
Cipher cipher = Cipher.getInstance("AES");
// 对加密工具类对象进行初始化
SecretKeySpec secretKeySpec = new SecretKeySpec(originKey.getBytes(), "AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
// 用加密工具类对象对明文进行加密
byte[] doFinal = cipher.doFinal(clearText.getBytes());
return Base64Utils.encodeToString(doFinal);
}
// 解密方法和加密相似,先用Base64解码,再用相同的密匙解密就可以了
}