Sorry for the confusion. To re-phrase my original question: should AES128, in CFB mode, work OK with a block size of 1 octet (i.e. 8 bits of data)? Chris
-----Original Message----- From: Richard Levitte - VMS Whacker [mailto:[EMAIL PROTECTED]] Sent: Monday, October 07, 2002 6:28 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: NIST AES Validation In message <002301c26e4f$6528ce40$[EMAIL PROTECTED]> on Mon, 7 Oct 2002 18:17:58 -0400, "Chris Brook" <[EMAIL PROTECTED]> said: cbrook> No, I wasn't confusing block size with key size. I did say cbrook> plaintext size of 16 :-) You wrote that, and you used the terms CFB128, CFB192 and CFB256, which basically would mean CFB mode with 128, 192 and 256 bits feedback blocks. That's at least how I understand the terminology. Basically, what you wrote was a little bit confusing. Now that you've shown that what you meant was AES128, AES192 and AES256, things get a bit clearer. The block size of CFB mode, for any algorithm, is independent of the key size. That same goes for all the other modes. Therefore, one can safely say that all the modes will work with any AES key size. -- Richard Levitte \ Spannv�gen 38, II \ [EMAIL PROTECTED] Redakteur@Stacken \ S-168 35 BROMMA \ T: +46-8-26 52 47 \ SWEDEN \ or +46-708-26 53 44 Procurator Odiosus Ex Infernis -- [EMAIL PROTECTED] Member of the OpenSSL development team: http://www.openssl.org/ Unsolicited commercial email is subject to an archival fee of $400. See <http://www.stacken.kth.se/~levitte/mail/> for more info. ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
