Here's some COBOL which calls CSNBRNGL. I have included calls to STCKF to get
timings (see: https://github.com/admattingly/Macho/ ) but you can comment this
out if you wish. Hopefully this logic is self-explanatory:
identification division.
program-id. wrangle.
environment
gt;
To IBM-MAIN@listserv.ua.edu
Date 3/11/2025 11:18:27 AM
Subject Re: Using CSNBRNGL
Billy,
On this page IBM tells you how to set up the C language parameters. Wherever
this page says a parameter is “integer” it means “PIC S9(9) BINARY”, where it
says “string” it is any “PIC X” of at least the len
On Tue, 11 Mar 2025 14:29:16 +, Billy Ashton wrote:
>Hey all! It's been a while since I bothered y'all, and I hate to do this
>again, but my manager wants me to do some research on using the Crypto
>feature to generate "true" random numbers - CSNBRNGL.
>
Would /dev/random do that for you?
<
Billy,
On this page IBM tells you how to set up the C language parameters. Wherever
this page says a parameter is “integer” it means “PIC S9(9) BINARY”, where it
says “string” it is any “PIC X” of at least the length specified by the
matching integer length parameter area. The integer random
Check in Cryptographic Services Integrated Cryptographic Service
FacilityApplication Programmer's Guide SC14-7508-09.
Ive put icsf C code in https://github.com/colinpaicemq/EasyICSF, so you
can get to see what coding "rules" etc looks like
It looks pretty easy if you can define character strings
Billy,
Why not use the PRNO/PPNO hardware instruction on your CPU if it is new enough?
Just write a small assembler program.
Tom Harper
Phoenix Software International
Sent from my iPhone
> On Mar 11, 2025, at 10:29 AM, Billy Ashton
> <0665bda14df5-dmarc-requ...@listserv.ua.edu> wrote:
