RE: [EXTERNAL] Program to Calculate Hash using SHA-256 of a file

Openssl will do it also if none of these work. Here is discussion from last time this came up. https://archive.midrange.com/rpg400-l/201803/msg00289.html

Kevin Bucknum
Senior Programmer Analyst
MEDDATA/MEDTRON
Tel: 985-893-2550

-----Original Message-----

From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of Alan Shore
Sent: Friday, August 17, 2018 9:15 AM
To: Midrange Systems Technical Discussion
Subject: RE: [EXTERNAL] Program to Calculate Hash using SHA-256 of a file

Forgot to mention
This was created on a V5r4 system - so fingers crossed - it will work on a V5r2
system

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill


-----Original Message-----
From: Alan Shore
Sent: Friday, August 17, 2018 10:13 AM
To: midrange-l@xxxxxxxxxxxx
Subject: RE: [EXTERNAL] Program to Calculate Hash using SHA-256 of a file

Hi
Look at this api
Qc3CalculateHMAC


I hope this helps

This is what we used in a service program I wrote MANY moons ago It took
me a while to sort this out - and Im sorry to say, but I cannot remember who
- but someone from this list proved invaluable in helping me sort this out

This is the code
monitor;
Qc3CalculateHMAC( ConvdataToHash
: DataLen
: 'DATA0100'
: SHA_256
: 'ALGD0500'
: my_key
: 'KEYD0200'
: '0'
: *blanks
: binaryHMAC
: ErrorCode );
on-error;
HldErrorcode = ErrorCode;
endmon;

d ConvdataToHash...
d s 500a
D DataLen s 10i 0
d SHA_256 c const(3)
d binaryHMAC...
D s 32765

D my_key DS qualified
D Type 10i 0 inz(SHA_256)
D Len 10i 0
D Fmt 1a inz('0')
D 3a
D Value 92a

D ErrorCode DS qualified
D bytesProv 10i 0 inz(0)
D bytesAvail 10i 0 inz(0)

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of p.caroti@xxxxxxxx
Sent: Friday, August 17, 2018 9:58 AM
To: midrange-l@xxxxxxxxxxxx
Subject: [EXTERNAL] Program to Calculate Hash using SHA-256 of a file

Hi all

I'm looking for an example how to calculate Hash using SHA-256 . be patient
for my request : this should be run on V5R2m0 (it would be possible)

I found this old link
https://www.experts-exchange.com/questions/20502110/Need-to-call-
MD5-algorit
hm-from-RPGLE.html, but i don't know how to (if possible) adapt to SHA-256

Thanks in in advance





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