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POConverting Encryption used in C# to PHP
 

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  1. POConverting Encryption used in C# to PHP
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    <p>I have been trying to convert a C# encryption technique to PHP. The C# code is as given below. I have no experience in C#. I had to take over project in C#</p> <pre><code>private void button1_Click(object sender, EventArgs e) { //byte[] response = ComputeHash("pradeep14520", BitConverter.GetBytes("0x9A111B734E4F10469668")); //byte[] response = ComputeHash("pradeep14520", dictionary.ElementAt(0).Value.Salt); byte[] response =ComputeHash("pradeep14520", StringToByteArray("9A111B734E4F10469668")); string hex = BitConverter.ToString(response).Replace("-", string.Empty); string base64 = Convert.ToBase64String(response); // 683CA8E00E8CE41A079B7C86CE4960AC2376CD85F2AEAB2E4DF99FFA7F7FA4F3 } private byte[] ComputeHash(string password, byte[] storedSalt) { byte[] passwordBytes = Encoding.Unicode.GetBytes(password); if ((int)storedSalt.Length &gt; 0) { byte[] passwordAndSalt = new byte[(int)passwordBytes.Length + (int)storedSalt.Length]; passwordBytes.CopyTo(passwordAndSalt, 0); storedSalt.CopyTo(passwordAndSalt, (int)passwordBytes.Length); passwordBytes = passwordAndSalt; } return new SHA256Managed().ComputeHash(passwordBytes); } </code></pre> <p>I have commented the sample response in the button click function. I tried to implement the same functionality using PHP. with the below code after referring <a href="https://stackoverflow.com/questions/7249998/why-isnt-my-php-sha256-hash-equivalent-to-c-sharp-sha256managed-hash">this link</a></p> <p>.I have found that there is no need to produce byte arrays in PHP as strings are byte arrays in php.</p> <pre><code>$originalSalt = 'pradeep14520'; $originalSalt .= '9A111B734E4F10469668'; hash("sha256",iconv(mb_detect_encoding($originalSalt, mb_detect_order(), false), "UTF-8", $originalSalt),true); </code></pre> <p>I have passed the last argument to the hash function as false inorder to get raw output. But i am getting different Output for PHP and C#</p> <pre><code>for PHP :afc80d1a6cae81e8f868b054dafbb74bdd86399d771fceef574e4b373506b704 for C# :683CA8E00E8CE41A079B7C86CE4960AC2376CD85F2AEAB2E4DF99FFA7F7FA4F3 </code></pre> <p>Plz help. Thanks in advance.</p> <p>Based on the suggestion provided by Daniel Hilgarth i have modified the code and made it work.</p> <pre><code> $password = 'pradeep14520'; $originalSalt = hex2bin('9A111B734E4F10469668'); echo strtoupper(hash("sha256",mb_convert_encoding($password,"UTF-16LE").$originalSalt,false)); </code></pre> <p>I hope it will help someone..</p>
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