Forum Discussion

Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Mar 18, 2012

Random Number Generator

Hi Folks,     i'm looking for a secure way to generate random and non-predicable 256bit values for session cookies. I pretty much understand the basics of RNG and already know that the irule "ra...
security
hooleylist's avatar
hooleylist
Icon for Cirrostratus rankCirrostratus
Mar 20, 2012
Hi Kai,

 

 

Both AES and CRYPTO commands should work similarly to create a secure random number.

 

 

On a tangent I'd make sure to avoid using a global variable as globals would demote the virtual server from running on all TMMs (they're not CMP compatible). If you want to store a static string, you can use the static namespace:

 

 

https://devcentral.f5.com/wiki/iRules.cmp.ashx

 

https://devcentral.f5.com/wiki/iRules.static.ashx

 

 

Aaron