Re: [PATCH 19/22] crypto: inside-secure - add check for xts input length equal to zero
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2020-08-12 00:37:28
Also in:
linux-arm-kernel, linux-crypto, linux-s390, lkml
On Tue, Aug 11, 2020 at 06:28:39PM +0300, Horia Geantă wrote:
What about, for example, CBC? AFAICT cbc(aes) with input length = 0 is valid.
That's just because CBC accepts any input which is a multiple of blocksize.
Same for CTR (with the note that blocksize = 1) and several other algorithms mentioned in the cover letter.
CTR accepts any input size.
What's the rule in these cases?
What input size is accepted depends on the algorithm. Cheers, -- Email: Herbert Xu [off-list ref] Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt