[OTR-dev] AES128 CTR?

[Ian Goldberg]

On Tue, Jan 18, 2005 at 02:07:45PM -0500, alex323 wrote:
> Nice. Rijndael requires a few parameters. It requires a plain text, 
> passphrase, salt, hash algo, # of password iterations, an IV, and a 
> keysize. I'm assuming that the passphrase is the "sending/receiving AES 
> key", the salt can be anything, the hash algo is sha1, the # of password 
> iterations is 2, the IV is anything, and they keysize is 256. is this 
> right? Please correct me if I am wrong. See: 
> http://www.obviex.com/samples/Encryption.aspx

No, that's not right.  The parameters for that class seem to indicate
it's using a stretched passphrase for the key, then doing AES256 in CBC
mode.

OTR gives you the key directly, and uses AES128 in CTR mode.

   - Ian