需要一个加密/解密方法没有一个“/”在加密的串 [英] Need an Encryption/decryption method does not have a '/' in the encrypted string

问题描述

我需要进行加密和解密的字符串值，如电子邮件地址和数值，但加密的字符串不应该在它有一个'/'，因为我使用了一个网址，并使用'/'作为分隔符来获得一些值。

我目前使用下面的方法：

 字符串的密码=Pas5pr @ SE //可以是任何字符串
    字符串saltValue =S @ 1tValue //可以是任何字符串
    的HashAlgorithm字符串=SHA1; //可以是MD5
    INT passwordIterations = 2; //可以是任何数量
    字符串initVector =@ 1B2c3D4e5F6g7H8 //必须是16个字节
    INT密钥大小= 256; //可能是192或128    公共字符串加密（字符串明文）
    {
        字节[] = initVectorBytes Encoding.ASCII.GetBytes（initVector）;
        字节[] = saltValueBytes Encoding.ASCII.GetBytes（saltValue）;
        字节[] = plainTextBytes Encoding.UTF8.GetBytes（明文）;
        PasswordDeriveBytes密码=新PasswordDeriveBytes（密码，saltValueBytes，的HashAlgorithm，passwordIterations）;
        字节[] = keyBytes password.GetBytes（密钥/ 8）;
        RijndaelManaged的symmetricKey =新RijndaelManaged的（）;
        symmetricKey.Mode = CipherMode.CBC;
        ICryptoTransform的加密= symmetricKey.CreateEncryptor（keyBytes，initVectorBytes）;
        MemoryStream的MemoryStream的=新的MemoryStream（）;
        CryptoStream的CryptoStream的=新的CryptoStream（MemoryStream的，加密，CryptoStreamMode.Write）;
        cryptoStream.Write（plainTextBytes，0，plainTextBytes.Length）;
        cryptoStream.FlushFinalBlock（）;
        字节[] = cipherTextBytes memoryStream.ToArray（）;
        memoryStream.Close（）;
        cryptoStream.Close（）;
        串密文= Convert.ToBase64String（cipherTextBytes）;
        返回密文;
    }
 

解决方案

如果你正在做它传递的只是URL，我建议你生成任何加密字符串（如果它没有物质 / 或没有），然后执行：

  VAR消毒= HttpUtility.UrlEn code（encryptedString）;
 

正如你所看到的， / 变成％2F 。然后，你可以简单地做：

  VAR encryptedString = HttpUtility.UrlDe code（消毒）
 

和你将再次得到相同的字符串。

编辑： HttpUtility 是的System.Web 组装

I need to encrypt and decrypt string values such as Email address and numeric values, but the encrypted string should not have a '/' in it because I am using that in a URL and using '/' for a separator to get some values.

I am currently using following method:

    string passPhrase = "Pas5pr@se";        // can be any string
    string saltValue = "s@1tValue";        // can be any string
    string hashAlgorithm = "SHA1";             // can be "MD5"
    int passwordIterations = 2;                  // can be any number
    string initVector = "@1B2c3D4e5F6g7H8"; // must be 16 bytes
    int keySize = 256;                // can be 192 or 128

    public string Encrypt(string plainText)
    {            
        byte[] initVectorBytes = Encoding.ASCII.GetBytes(initVector);
        byte[] saltValueBytes = Encoding.ASCII.GetBytes(saltValue);         
        byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
        PasswordDeriveBytes password = new PasswordDeriveBytes(passPhrase,saltValueBytes,hashAlgorithm,passwordIterations);
        byte[] keyBytes = password.GetBytes(keySize / 8);
        RijndaelManaged symmetricKey = new RijndaelManaged();
        symmetricKey.Mode = CipherMode.CBC;            
        ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes,initVectorBytes);
        MemoryStream memoryStream = new MemoryStream();
        CryptoStream cryptoStream = new CryptoStream(memoryStream,encryptor,CryptoStreamMode.Write);           
        cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);            
        cryptoStream.FlushFinalBlock();
        byte[] cipherTextBytes = memoryStream.ToArray();
        memoryStream.Close();
        cryptoStream.Close();
        string cipherText = Convert.ToBase64String(cipherTextBytes);
        return cipherText;
    }

解决方案

If you're doing it for passing in the URL only, I suggest you generating any encrypted string (no matter if it has / or not), and do:

var sanitized = HttpUtility.UrlEncode(encryptedString);

As you can see, / becomes %2f. Then you can simply do:

var encryptedString = HttpUtility.UrlDecode(sanitized)

and you will get the same string again.

Edit: HttpUtility is in the System.Web assembly.

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