Read from memory stream at position
I am trying to read from a memory stream at the position its currently in. I have tried to use memoryStream.Read() but since I will not know how big the file is I can't use byte[] cipher = new byte[128] for example. It needs to be as big as what is left in the memory stream. I was trying to use memoryStream.ToArray() but that ignores the position the memory stream is at.
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I am trying to decrypt a file. The memory stream has the Key and IV i will use to decrypt the file at the start of it. So the first 256 bytes are being used for that. I would like to start reading after those.