mdw@git.distorted.org.uk Git - ezmlm/blob - surf.3

   1 .TH surf 3
   2 .SH NAME
   3 surf \- Simple Unpredictable Random Function
   4 .SH SYNTAX
   5 .B #include <surf.h>
   6
   7 void \fBsurf\fP(\fIout\fR,\fIin\fR,\fIseed\fR);
   8
   9 uint32 \fIout\fR[8];
  10 .br
  11 uint32 \fIin\fR[12];
  12 .br
  13 uint32 \fIseed\fR[32];
  14 .SH DESCRIPTION
  15 .B surf
  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,
  19 .B surf
  20 appears to be indistinguishable from a completely random
  21 384-bit-to-256-bit function.
  22 .SH "SEE ALSO"
  23 surfpcs(3)