[PATCH v5 4/6] lib: rsa: generate additional parameters for public key

[Simon Glass]

On Tue, 17 Dec 2019 at 01:53, AKASHI Takahiro
<takahiro.akashi at linaro.org> wrote:
>
> In the current implementation of FIT_SIGNATURE, five parameters for
> a RSA public key are required while only two of them are essential.
> (See rsa-mod-exp.h and uImage.FIT/signature.txt)
> This is a result of considering relatively limited computer power
> and resources on embedded systems, while such a assumption may not
> be quite practical for other use cases.
>
> In this patch, added is a function, rsa_gen_key_prop(), which will
> generate additional parameters for other uses, in particular
> UEFI secure boot, on the fly.
>
> Note: the current code uses some "big number" routines from BearSSL
> for the calculation.
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>  include/u-boot/rsa-mod-exp.h |  23 ++
>  lib/rsa/Kconfig              |   3 +
>  lib/rsa/Makefile             |   1 +
>  lib/rsa/rsa-keyprop.c        | 725 +++++++++++++++++++++++++++++++++++
>  4 files changed, 752 insertions(+)
>  create mode 100644 lib/rsa/rsa-keyprop.c

Reviewed-by: Simon Glass <sjg at chromium.org>

I think it would help to have the change log in each patch as well as
the cover letter. If you use patman it will do this for you.