python代碼加密運作_python如何實作與此java程式一樣的DES加密

先上程式,Java程式DesUtils.java

import java.security.SecureRandom;

import javax.crypto.Cipher;

import javax.crypto.SecretKey;

import javax.crypto.SecretKeyFactory;

import javax.crypto.spec.DESKeySpec;

public class DesUtils {

public DesUtils() {

}

private final static String ALGORITHM = "DES";

public static void main(String[] args) throws Exception {

final String PASSWORD_CRYPT_KEY = "kEHrDooxWHCWtfeSxvDvgqZq";

String str="abcdefghi";

str = DesUtils.encrypt(str, PASSWORD_CRYPT_KEY);

System.out.println("str: " + str);

}

public final static String decrypt(String data, String pwd)

throws Exception {

return new String(decrypt(hex2byte(data.getBytes()), pwd.getBytes()));

}

public final static String encrypt(String data, String pwd)

throws Exception {

return byte2hex(encrypt(data.getBytes(), pwd.getBytes()));

}

private static byte[] encrypt(byte[] data, byte[] key) throws Exception {

SecureRandom sr = new SecureRandom();

System.out.println("iv1: " + sr);

DESKeySpec dks = new DESKeySpec(key);

SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);

SecretKey securekey = keyFactory.generateSecret(dks);

Cipher cipher = Cipher.getInstance(ALGORITHM);

System.out.println("SECRECT: " + securekey);

cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

return cipher.doFinal(data);

}

private static byte[] decrypt(byte[] data, byte[] key) throws Exception {

SecureRandom sr = new SecureRandom();

System.out.println("iv2: " + sr);

DESKeySpec dks = new DESKeySpec(key);

SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);

SecretKey securekey = keyFactory.generateSecret(dks);

Cipher cipher = Cipher.getInstance(ALGORITHM);

cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

return cipher.doFinal(data);

}

public static byte[] hex2byte(byte[] b) {

if ((b.length % 2) != 0)

throw new IllegalArgumentException("fault lentgh");

byte[] b2 = new byte[b.length / 2];

for (int n = 0; n < b.length; n += 2) {

String item = new String(b, n, 2);

b2[n / 2] = (byte) Integer.parseInt(item, 16);

}

return b2;

}

public static String byte2hex(byte[] b) {

String hs = "";

String stmp = "";

for (int n = 0; n < b.length; n++) {

stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));

if (stmp.length() == 1)

hs = hs + "0" + stmp;

else

hs = hs + stmp;

}

return hs.toUpperCase();

}

}

運作對abcdefghi字元串加密之後，輸出如下

我現在需要用python實作同樣的加密功能，對abcdefghi加密，最終也是AD64...的結果，請問該怎麼做呢？

已經困擾了我好多天了，求大神指導，最好給出代碼。不想誤導各位，是以就不說我之前的思路了。