3 surf \- Simple Unpredictable Random Function
7 void \fBsurf\fP(\fIout\fR,\fIin\fR,\fIseed\fR);
13 uint32 \fIseed\fR[32];
16 changes a 384-bit input to a 256-bit output,
17 under control of a 1024-bit seed.
18 When the seed is secret,
20 appears to be indistinguishable from a completely random
21 384-bit-to-256-bit function.