Re: [PATCH 0/4] crypto: Key Derivation Function (SP800-108)

2016-01-27 Thread Stephan Mueller
Am Mittwoch, 27. Januar 2016, 15:35:41 schrieb Herbert Xu: Hi Herbert, >On Wed, Jan 27, 2016 at 08:33:00AM +0100, Stephan Mueller wrote: >> With the current development of EXT4 encryption we currently have the >> logic that the files are either open (read/writable) or closed (not >> accessible).

Re: [PATCH 0/4] crypto: Key Derivation Function (SP800-108)

2016-01-26 Thread Herbert Xu
On Tue, Jan 26, 2016 at 07:19:17AM +0100, Stephan Mueller wrote: > Hi, > > this patch set implements all three key derivation functions defined in > SP800-108. > > The implementation is provided as a template for random number generators, > since a KDF can be considered a form of deterministic

Re: [PATCH 0/4] crypto: Key Derivation Function (SP800-108)

2016-01-26 Thread Stephan Mueller
Am Mittwoch, 27. Januar 2016, 13:14:09 schrieb Herbert Xu: Hi Herbert, >On Tue, Jan 26, 2016 at 07:19:17AM +0100, Stephan Mueller wrote: >> Hi, >> >> this patch set implements all three key derivation functions defined in >> SP800-108. >> >> The implementation is provided as a template for

Re: [PATCH 0/4] crypto: Key Derivation Function (SP800-108)

2016-01-26 Thread Herbert Xu
On Wed, Jan 27, 2016 at 08:33:00AM +0100, Stephan Mueller wrote: > > With the current development of EXT4 encryption we currently have the > logic that the files are either open (read/writable) or closed (not > accessible). > > There is a scenario for a third option: a file is writable in a

[PATCH 0/4] crypto: Key Derivation Function (SP800-108)

2016-01-25 Thread Stephan Mueller
Hi, this patch set implements all three key derivation functions defined in SP800-108. The implementation is provided as a template for random number generators, since a KDF can be considered a form of deterministic RNG where the key material is used as a seed. With the KDF implemented as a