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Asked: 2026-05-11T10:52:30+00:00

this is my PHP code: hash_hmac( sha256, utf8_encode( $filename ), utf8_encode( $password ) );

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this is my PHP code:

hash_hmac( 'sha256', utf8_encode( $filename ), utf8_encode( $password ) );

and this is my C# code:

var hmacsha256 = new HMACSHA256( Encoding.UTF8.GetBytes( password ) ); hmacsha256.ComputeHash( Encoding.UTF8.GetBytes( filename ) );

unfortunately both results differ. Can anyone give me a hint?

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1 Answer

  1. My C# is not the best but i got it to work, what you need to do is to convert your byte array results to hex.

    PHP

    $hash = hash_hmac( 'sha256', utf8_encode('Filename'), utf8_encode('Password')); echo $hash; // 5fe2ae06ff9828b33fe304545289a3f590bfd948ca9ab731c980379992ef41f1

    C#

    string password = 'Password'; string filename = 'Filename';  var hmacsha256 = new HMACSHA256(Encoding.UTF8.GetBytes(password)); hmacsha256.ComputeHash(Encoding.UTF8.GetBytes(filename));  foreach(byte test in hmacsha256.Hash) {     Console.Write(test.ToString('X2')); } // 5FE2AE06FF9828B33FE304545289A3F590BFD948CA9AB731C980379992EF41F1
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