[Cryptography] High volume thermal entropy from an iPhone

[Dave Horsfall]

On Wed, 13 Dec 2017, Alexandre Anzala-Yamajako wrote:

> The example is old but I could give you the output of an AES in counter 
> mode with a null key and a null iv and no standard statistical test woud 
> ever show you any defects while you have absolutely no entropy.

I'm still learning here, but is that a weakness of crypto in general i.e. 
always avoid null keys and IVs, or AES in particular?

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."