[UWP]使用C＃在UWP应用程序中解密文件

本文介绍了[UWP]使用C＃在UWP应用程序中解密文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 在下面用于解密的其他（Java）应用程序开发人员。 该代码在stackoverflow上可用，但是当我尝试将此代码用于相同的uwp应用程序时 找不到任何帮助。   private static final byte [] salt = {         （字节）0x43，（字节）0x76，（字节）0x95，（字节）0xc7，         （字节）0x5b，（字节）0xd7，（字节）0x45，（字节）0x17     };     private static Cipher makeCipher（String pass，Boolean decryptMode）抛出GeneralSecurityException { $        //使用KeyFactory从密码短语中导出相应的密钥：         PBEKeySpec keySpec = new PBEKeySpec（pass.toCharArray（））;         SecretKeyFactory keyFactory = SecretKeyFactory.getInstance（" PBEWithMD5AndDES"）;         SecretKey key = keyFactory.generateSecret（keySpec）;         //从salt创建参数和任意次数的迭代：         PBEParameterSpec pbeParamSpec = new PBEParameterSpec（salt，42）;         / *将密钥转储到文件进行测试：* /         FileEncryptor.keyToFile（key）;         //设置密码：         Cipher cipher = Cipher.getInstance（" PBEWithMD5AndDES"）;         //将密码模式设置为解密或加密：         if（decryptMode）{             cipher.init（Cipher.ENCRYPT_MODE，key，pbeParamSpec）;         } else {             cipher.init（Cipher.DECRYPT_MODE，key，pbeParamSpec）;         }        返回密码;     }   public static void decryptFile（String fileName，String pass）        &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;抛出GeneralSecurityException，IOException { $         byte [] encData;         byte [] decData;        文件inFile =新文件（fileName +" .encrypted"）;         Cipher cipher = FileEncryptor.makeCipher（pass，false）; $         FileInputStream inStream = new FileInputStream（inFile）;         encData = new byte [（int）inFile.length（）];         inStream.read（encData）;         inStream.close（）;         //解密文件数据：         decData = cipher.doFinal（encData）;         int padCount =（int）decData [decData.length - 1];         //为了进行可靠的检查，请检查最后的padCount字节是否具有相同的值         if（padCount> = 1&& padCount< = 8）{             decData = Arrays.copyOfRange（decData，0，decData.length - padCount）;         }        /将解密数据写入新文件：         FileOutputStream target = new FileOutputStream（new File（fileName +" .decrypted.txt"））; $         target.write（decData）;    } Arun Singh Rawat |流动性| UWP | WPF Skype：arun.rawat017 |电子邮件：[email protected] | [email protected] 解决方案 In other (Java) application developer used below code for decryption.that code is available on stackoverflow but when i try to use this code for same uwp ApplicationNot found any help for it. private static final byte[] salt = {        (byte) 0x43, (byte) 0x76, (byte) 0x95, (byte) 0xc7,        (byte) 0x5b, (byte) 0xd7, (byte) 0x45, (byte) 0x17    };    private static Cipher makeCipher(String pass, Boolean decryptMode) throws GeneralSecurityException{       //Use a KeyFactory to derive the corresponding key from the passphrase:        PBEKeySpec keySpec = new PBEKeySpec(pass.toCharArray());        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");        SecretKey key = keyFactory.generateSecret(keySpec);        //Create parameters from the salt and an arbitrary number of iterations:        PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 42);        /*Dump the key to a file for testing: */        FileEncryptor.keyToFile(key);        //Set up the cipher:        Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");        //Set the cipher mode to decryption or encryption:        if(decryptMode){            cipher.init(Cipher.ENCRYPT_MODE, key, pbeParamSpec);        } else {            cipher.init(Cipher.DECRYPT_MODE, key, pbeParamSpec);        }        return cipher;    } public static void decryptFile(String fileName, String pass)                            throws GeneralSecurityException, IOException{        byte[] encData;        byte[] decData;        File inFile = new File(fileName+ ".encrypted");        Cipher cipher = FileEncryptor.makeCipher(pass, false);        FileInputStream inStream = new FileInputStream(inFile );        encData = new byte[(int)inFile.length()];        inStream.read(encData);        inStream.close();        //Decrypt the file data:        decData = cipher.doFinal(encData);        int padCount = (int)decData[decData.length - 1];        //For robust check, check that padCount bytes at the end have same value        if( padCount >= 1 && padCount <= 8 ) {            decData = Arrays.copyOfRange( decData , 0, decData.length - padCount);        }       /Write the decrypted data to a new file:        FileOutputStream target = new FileOutputStream(new File(fileName + ".decrypted.txt"));        target.write(decData);   }Arun Singh Rawat | Mobility | UWP| WPF Skype: arun.rawat017 | Email:[email protected]| [email protected] 解决方案 这篇关于[UWP]使用C＃在UWP应用程序中解密文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！