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module: enable automatic module signing with FIPS 202 SHA-3 

Add Kconfig options to use SHA-3 for kernel module signing. 256 size
for RSA only, and higher sizes for RSA and NIST P-384.

Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dimitri John Ledkov 2023-10-22 19:22:07 +01:00 committed by Herbert Xu
parent fdb4f66c95
commit 446b1e0b7b
2 changed files with 16 additions and 1 deletions
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2
certs/Kconfig
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@ -30,7 +30,7 @@ config MODULE_SIG_KEY_TYPE_RSA
config MODULE_SIG_KEY_TYPE_ECDSA
bool "ECDSA"
select CRYPTO_ECDSA
depends on MODULE_SIG_SHA384 || MODULE_SIG_SHA512
depends on !(MODULE_SIG_SHA256 || MODULE_SIG_SHA3_256)
help
Use an elliptic curve key (NIST P384) for module signing. Use
a strong hash of same or higher bit length, i.e. sha384 or

15
kernel/module/Kconfig
View File

@ -248,6 +248,18 @@ config MODULE_SIG_SHA512
bool "Sign modules with SHA-512"
select CRYPTO_SHA512
config MODULE_SIG_SHA3_256
bool "Sign modules with SHA3-256"
select CRYPTO_SHA3
config MODULE_SIG_SHA3_384
bool "Sign modules with SHA3-384"
select CRYPTO_SHA3
config MODULE_SIG_SHA3_512
bool "Sign modules with SHA3-512"
select CRYPTO_SHA3
endchoice
config MODULE_SIG_HASH
@ -256,6 +268,9 @@ config MODULE_SIG_HASH
default "sha256" if MODULE_SIG_SHA256
default "sha384" if MODULE_SIG_SHA384
default "sha512" if MODULE_SIG_SHA512
default "sha3-256" if MODULE_SIG_SHA3_256
default "sha3-384" if MODULE_SIG_SHA3_384
default "sha3-512" if MODULE_SIG_SHA3_512
choice
prompt "Module compression mode"