/// <summary>
/// Computes a token for the specified file stream.
/// </summary>
/// <param name="stream">The file stream.</param>
/// <returns>The token.</returns>
public string ComputeToken(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
byte[] hashBytes;
// Hash the incoming data
using (var sha256Hash = new SHA256Managed())
{
stream.Position = 0;
hashBytes = sha256Hash.ComputeHash(stream);
}
stream.Position = 0;
// Convert the hashed data to a Base32 string.
return(Base32Encoding.ToBase32String(hashBytes));
}
public void ToBase32StringTests(byte[] input, string output)
{
var encodedString = Base32Encoding.ToBase32String(input);
Assert.AreEqual(output, encodedString, "The encoded strings do not match");
}
public void ToBase32StringInvalidArgs()
{
Assert.That(() => Base32Encoding.ToBase32String(null),
Throws.TypeOf <ArgumentNullException>().And.Property("ParamName").EqualTo("bytes"));
}