java - 求帮忙把这个DES加密代码转换成PHP的.. 这是DES算法么 ..

Question

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import java.io.IOException;
import java.security.SecureRandom;



public class PHPDESEncrypt {
    String key;

    public PHPDESEncrypt() {

    }

    public PHPDESEncrypt(String key) {
        this.key = key;
    }

    public byte[] desEncrypt(byte[] plainText) throws Exception {
        SecureRandom sr = new SecureRandom();
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.ENCRYPT_MODE, key, sr);
        byte data[] = plainText;
        byte encryptedData[] = cipher.doFinal(data);
        return encryptedData;
    }

    public byte[] desDecrypt(byte[] encryptText) throws Exception {
        SecureRandom sr = new SecureRandom();
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.DECRYPT_MODE, key, sr);
        byte encryptedData[] = encryptText;
        byte decryptedData[] = cipher.doFinal(encryptedData);
        return decryptedData;
    }

    public String encrypt(String input) throws Exception {
        return base64Encode(desEncrypt(input.getBytes())).replaceAll("\\s*", "");
    }

    public String decrypt(String input) throws Exception {
        byte[] result = base64Decode(input);
        return new String(desDecrypt(result));
    }

    public String base64Encode(byte[] s) {
        if (s == null) return null;
        BASE64Encoder b = new sun.misc.BASE64Encoder();
        return b.encode(s);
    }

    public byte[] base64Decode(String s) throws IOException {
        if (s == null) {
            return null;
        }
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] b = decoder.decodeBuffer(s);
        return b;
    }

    public static void main(String[] args) {
        try {
            PHPDESEncrypt d = new PHPDESEncrypt("12345678");
            String p = d.encrypt("love");

            System.out.println("密文:" + p);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }
}

Answer 1

des加密有好几种。。不知道你这种是哪个。。。这里有两种，你可以对照一下php Des加密

Answer 2

这个……看你贴的代码是java吧！你要用php的DES解密需要至少得需要知道加密key和对应的加密模式例如是CBC,CFB,ECB等！确认好之后，用楼上的给你的dome应该没问题的

Answer 3

class DES {
    static public function encrypt($str, $key) {
        $block = mcrypt_get_block_size('des', 'ecb');  
        $pad = $block - (strlen($str) % $block);  
        $str .= str_repeat(chr($pad), $pad);  
    
        $data = mcrypt_encrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB);
        return base64_encode($data); 
    }
    
    static public function decrypt($str, $key) {
        $str = base64_decode($str);
        $str = mcrypt_decrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB);    
        $pad = ord($str[($len = strlen($str)) - 1]);  
    
        return substr($str, 0, strlen($str) - $pad);
    }
}