A Simple Encryption/Decryption Algorithm for Numbers

April 27, 2005 Hey, Ted

One of the most important tasks of any IT department is to make sure that information stored in database files is not accessible to unauthorized users. RPG program CCED01 provides a simple way to encrypt and decrypt numbers up to 16 digits long.

The algorithm is based on a16-element array of numeric digits, which I implement as a compile-time array in CCED01. Each element must contain the ten numeric characters from 0 to 9. Each digit must appear only once in each element of the array. The digits can appear in any order you like. Here’s an example:

0123456789
1234567890

Suppress Runtime Display When Qshell Cancels

April 27, 2005 Hey, Ted

Tahler’s Qshell tip works great. If there is an error in a CL program that runs the Start Qshell command (STRQSH or QSH), I receive escape message QSH0005. Unfortunately, an error also causes the system to display the C runtime display when I run interactively. I have to press Enter to continue. Can I suppress the error display?

–John

Yes. I wish I had included that information when we ran the article you mentioned. You need to assign the value NONE to environment variable QIBM_QSH_CMD_OUTPUT.

addenvvar  envvar(QIBM_QSH_CMD_OUTPUT) value('NONE')

Here’s more information I wish I had included: I have found that

Admin Alert: Getting Ready for Single Sign-On

April 27, 2005 Joe Hertvik

One of IBM‘s better i5/OS improvements was the V5R2 addition of single sign-on technology, where network users can access a Kerberos server to automatically authenticate and authorize themselves to sign on to i5/OS applications without entering an OS/400 user profile and password. By using single sign-on, a user can sign on once to a network server and automatically gain access to a wide variety of OS/400 applications, if their network is configured correctly.

At this spring’s COMMON, I attended a number of classes on configuring single sign-on on an i5/OS box, and–with the help of IBM documentation and