Re: Rijndael Encryption with SHA256 hash

[Michael Monsen]

On Wednesday, April 30, 2003, at 10:34  AM, Phillip Allan-Harding wrote:

I'm relatively new to cryptography and Crypto++, can someone comment 
on whether what I want to do sounds "correct" (whatever correct > means!)

- I want to encrypt data, that is to be transmitted around the 
inter/intraNet, using Rijndael

- I want to use a key for the above encryption that is an SHA128/256 
hash based on: -
	{multiple concatenated string data components} + {a nonce}
	This provides some security, but it would be more useful if you were 
to explain what sort of data you're trying to protect and what kinds of 
attacks you're trying to prevent.  Whether you're concerned about 
passive listening attacks vs attacks where packets can be intercepted 
and/or modified en route will dictate what type of encryption you 
should use, for example.

--
Michael Monsen
There are 10 kinds of people in this world.
Those who understand binary, and those who don't.