/// <summary>
/// Creates a hash algorithm instance.
/// </summary>
/// <param name="name">The hash algorithm name,</param>
/// <returns>A hash algorithm instance.</returns>
/// <exception cref="ArgumentNullException">name was null.</exception>
/// <exception cref="ArgumentException">name.Name was null or empty.</exception>
/// <exception cref="NotSupportedException">The hash algorithm name is not supported.</exception>
public static HashAlgorithm Create(HashAlgorithmName name)
{
if (name == HashAlgorithmName.SHA512)
{
return(SHA512.Create());
}
if (name == HashAlgorithmName.MD5)
{
return(MD5.Create());
}
if (name == HashAlgorithmName.SHA256)
{
return(SHA256.Create());
}
if (name == HashAlgorithmName.SHA1)
{
return(SHA1.Create());
}
if (name == HashAlgorithmName.SHA384)
{
return(SHA384.Create());
}
if (string.IsNullOrWhiteSpace(name.Name))
{
throw new ArgumentException("name.Name should not be null or empty.", nameof(name));
}
return((name.Name.ToUpperInvariant().Replace("-", string.Empty)) switch
{
"SHA3512" or "KECCAK512" or "SHA3" => SHA3Managed.Create512(),
"SHA3384" or "KECCAK384" => SHA3Managed.Create384(),
"SHA3256" or "KECCAK256" => SHA3Managed.Create256(),
"SHA3224" or "KECCAK224" => SHA3Managed.Create224(),
"SHA256" => SHA256.Create(),
"SHA384" => SHA384.Create(),
"SHA512" or "SHA2" => SHA512.Create(),
"MD5" => MD5.Create(),
"SHA1" => SHA1.Create(),
_ => HashAlgorithm.Create(name.Name),
});
/// <summary>
/// Creates a hash signature provider using SHA-3-256 hash algorithm.
/// </summary>
/// <param name="shortName">true if use short name; otherwise, false.</param>
/// <returns>A keyed hash signature provider.</returns>
public static HashSignatureProvider CreateSHA3256(bool shortName = false)
{
return(new HashSignatureProvider(SHA3Managed.Create256(), shortName ? "S3256" : "SHA3256", true));
}