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Commit e0d310b0 authored by AKASHI Takahiro's avatar AKASHI Takahiro Committed by Tom Rini
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lib: rsa: generate additional parameters for public key



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: default avatarAKASHI Takahiro <takahiro.akashi@linaro.org>
parent a8fc3df8
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