es in the message modulo 256.  This digest
function fails one test of a cryptographically secure hash function: it
must be difficult to find a message with a given digest.  It also fails
the other test: it must be difficult to find two messages with the same
digest.</P><P>Ironclad provides several cryptographically secure digest functions
and several non-cryptographically secure digest functions.</P><TABLE CLASS="note"><TR><TD CLASS="title">Note</TD><TD CLASS="content">In the functions below, messages or pa