Can't use SHA-512 in Silverlight?

Question

pdf: Web Client Integration by URL says:

Assigning a SHA-512 hash from a passphrase (512 bit result). This can be implemented in .NET using the SHA512Managed-class. The problem is that my project is in SilverLight, and SHA512Managed is not available for Silverlight, and there is no other version for SilverLight yet.

So basically I am locked in step SHA512:

var passphrase = "mypassphrase"; byte[] byteValue = (new SHA512Managed()).ComputeHash(System.Text.Encoding.UTF8.GetBytes(passphrase)); byte[] key = new byte[32]; byte[] iv = new byte[16]; Array.Copy(byteValue, key, 32); Array.Copy(byteValue, 32, iv, 0, 16); // Declare the stream used to encrypt to an in memory // array of bytes. MemoryStream msEncrypt = null; // Create a RijndaelManaged object // with the specified key and IV. aesAlg = new AesManaged(); aesAlg.Key = key; aesAlg.IV = iv; 

Could you tell me if there is another way to encode the url?

Answer 1

Mono has an implementation that you can probably use if you are satisfied with the OS license.

https://github.com/mono/mono/blob/master/mcs/class/corlib/System.Security.Cryptography/SHA512Managed.cs