java仿MD5格式的DES加解密源码

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[Java] 纯文本查看 复制代码

desen("52pojie","88888888");
//output: 7A619ACF6A730058
desout("7A619ACF6A730058","88888888");
//output: 52pojie

[Java] 纯文本查看 复制代码

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;
  public static String desen(String CDKEY, String sKey)   {
       
        try {
            DESKeySpec desKeySpec = new DESKeySpec(sKey.getBytes(StandardCharsets.UTF_8));
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            byte[] keyBytes = keyFactory.generateSecret(desKeySpec).getEncoded();
            IvParameterSpec iv = new IvParameterSpec(keyBytes);

            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, keyFactory.generateSecret(desKeySpec), iv);

            byte[] encryptedBytes = cipher.doFinal(CDKEY.getBytes(StandardCharsets.UTF_8));
            StringBuilder stringBuilder = new StringBuilder();
            for (byte b : encryptedBytes) {
                stringBuilder.append(String.format("%02X", b));
            }
            return stringBuilder.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;

    }
    public static String desout(String CDKEY, String sKey) {
      
        try {

            byte[] keyBytes = sKey.getBytes(StandardCharsets.US_ASCII);
            byte[] ivBytes = sKey.getBytes(StandardCharsets.US_ASCII);
            DESKeySpec desKeySpec = new DESKeySpec(keyBytes);
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);

            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, keyFactory.generateSecret(desKeySpec), ivSpec);

            byte[] encryptedBytes = new byte[CDKEY.length() / 2];
            for (int i = 0; i < CDKEY.length() / 2; i++) {
                int num = Integer.parseInt(CDKEY.substring(i * 2, i * 2 + 2), 16);
                encryptedBytes[i] = (byte) num;
            }

            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            outputStream.write(cipher.doFinal(encryptedBytes));

            return new String(outputStream.toByteArray(), StandardCharsets.UTF_8);
        } catch (Exception e) {
            return CDKEY;
        }
    }

wu731kk

不错~不错~

prince小君

不错~不错~

youzijun

可以 ~支持

XCoder

Mark一下，支持

Jessema

好东西，收藏了。