Am Mittwoch, 8. Juni 2016, 11:13:34 schrieb Herbert Xu:
Hi Herbert,
> OK. I don't think the RNG API really guarantees that you can do
> in-place generation anyway. So don't even bother checking for
> src == dst.
Ok, I will remove the check.
>
> When you submit this again can you please send
On Thu, Jun 02, 2016 at 05:12:20PM +0200, Stephan Mueller wrote:
>
> The KDFs are usually used for output sizes between one and 4 keys. So,
> commonly it is expected that not more than 200 or 300 bytes are generated by
> one call. But you cannot be sure how much data a user wants. The spec
Am Donnerstag, 2. Juni 2016, 16:55:26 schrieb Herbert Xu:
Hi Herbert,
>
> Why don't you put the result in a temporary buffer and then copy
> it? These things are tiny, right?
The KDFs are usually used for output sizes between one and 4 keys. So,
commonly it is expected that not more than 200
On Tue, May 31, 2016 at 01:52:32PM +0200, Stephan Mueller wrote:
>
> + * NOTE: Technically you can use one buffer for holding the label_context and
> + *the outbuf in the example above. Howerver, multiple rounds of the
> + *KDF are to be expected with the input must always be the same.
> +
The SP800-108 compliant Key Derivation Function is implemented as a
random number generator considering that it behaves like a deterministic
RNG.
All three KDF types specified in SP800-108 are implemented.
The code comments provide details about how to invoke the different KDF
types.
