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POSSCrypto/OpenSSL to C# Crypto
 

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    <p>Has anyone been able to use the SSCrypto Framework for Cocoa to encrypt text and then decrypt it in C#/.NET ? Or can someone offer some guidance?</p> <p>I'm pretty sure my issue has to do with getting the crypto settings correct but I am far from fluent in Cocoa so I can't really tell what settings are being used in the library. However my attempt at deciphering it seems like md5 hashing, CBC mode, padding with zeros and I have no idea if the IV is set or not...</p> <p>My C# code looks like this:</p> <pre><code> public static string Decrypt( string toDecrypt, string key, bool useHashing ) { byte[] keyArray; byte[] toEncryptArray = Convert.FromBase64String( toDecrypt ); if( useHashing ) { MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider(); keyArray = hashmd5.ComputeHash( UTF8Encoding.UTF8.GetBytes( key ) ); hashmd5.Clear(); } else keyArray = UTF8Encoding.UTF8.GetBytes( key ); TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider(); tdes.Key = keyArray; tdes.Mode = CipherMode.CBC; tdes.Padding = PaddingMode.Zeros; ICryptoTransform cTransform = tdes.CreateDecryptor(); byte[] resultArray = cTransform.TransformFinalBlock( toEncryptArray, 0, toEncryptArray.Length ); tdes.Clear(); return UTF8Encoding.UTF8.GetString( resultArray ); } </code></pre> <p>When I run encryption on the Cocoa side I get the encrypted text:</p> <p>UMldOZh8sBnHAbfN6E/9KfS1VyWAa7RN</p> <p>but that won't decrypt on the C# side with the same key.</p> <p>Any help is appreciated, thanks.</p>
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    1. COI don't really know .NET that well, can you post your Cocoa code too? It might make it easier for people well versed in one or the other to help you out...
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