A meta digest provider class for SHA256, SHA384 and SHA512.
Digest::SHA2.new(bitlen = 256) â digest_obj Class Public methods Creates a
digest_obj.digest_length â Integer Instance Public methods Returns the length
<<(str) Instance Public methods Alias for:
digest_obj.reset â digest_obj Instance Public methods Resets the digest to
digest_obj.update(string) â digest_objdigest_obj Instance Public methods
digest_obj.block_length â Integer Instance Public methods Returns the block