e9b4913a5f
Fuzz testing uncovered an issue when |user key| > |derived key|. Derived key generation has to be fixed in two cases: 1. Era >= 6 (DKP is available) DKP cannot be used with immediate input key if |user key| > |derived key|, since the resulting descriptor (after DKP execution) would be invalid - having a few bytes from user key left in descriptor buffer as incorrect opcodes. Fix DKP usage both in standalone hmac and in authenc algorithms. For authenc the logic is simplified, by always storing both virtual and dma key addresses. 2. Era < 6 The same case (|user key| > |derived key|) fails when DKP is not available. Make sure gen_split_key() dma maps max(|user key|, |derived key|), since this is an in-place (bidirectional) operation. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.