[U-Boot] [PATCH v2 2/6] rsa: add RSA_VERIFY_WITH_PKEY
AKASHI Takahiro
takahiro.akashi at linaro.org
Tue Oct 29 06:46:32 UTC 2019
In the next couple of commits, under new RSA_VERIFY_WITH_PKEY,
rsa_verify() will be extended to enable RSA decryption without
additional RSA key properties from FIT image, i.e. rr and n0inv.
Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
---
lib/rsa/Kconfig | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/lib/rsa/Kconfig b/lib/rsa/Kconfig
index 03ffa2969048..71e4c06bf883 100644
--- a/lib/rsa/Kconfig
+++ b/lib/rsa/Kconfig
@@ -30,6 +30,20 @@ config RSA_VERIFY
help
Add RSA signature verification support.
+config RSA_VERIFY_WITH_PKEY
+ bool "Execute RSA verification without key parameters from FDT"
+ depends on RSA
+ help
+ The standard RSA-signature verification code (FIT_SIGNATURE) uses
+ pre-calculated key properties, that are stored in fdt blob, in
+ decrypting a signature.
+ This does not suit the use case where there is no way defined to
+ provide such additional key properties in standardized form,
+ particularly UEFI secure boot.
+ This options enables RSA signature verification with a public key
+ directly specified in image_sign_info, where all the necessary
+ key properties will be calculated on the fly in verification code.
+
config RSA_SOFTWARE_EXP
bool "Enable driver for RSA Modular Exponentiation in software"
depends on DM
--
2.21.0
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