base64digest(str = nil)
Instance Public methods
If none is given, returns the resulting hash value of the digest in a
base64 encoded form, keeping the digest's state.
If a string is given, returns the hash value for the given
string in a base64 encoded form, resetting the digest to the
initial state before and after the process.
In either case, the return value is properly padded with '=' and
contains no line feeds.