diff options
| author | Dimitri John Ledkov <dimitri.ledkov@canonical.com> | 2023-10-10 22:22:38 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-10-20 13:39:26 +0800 |
| commit | 16ab7cb5825fc3425c16ad2c6e53d827f382d7c6 (patch) | |
| tree | 8cf4c325cbdf68f4d256c2ed5c6f4bc7d7d7bc93 /kernel | |
| parent | c35b581e5197cced51047beeab0d3ccbfe948764 (diff) | |
crypto: pkcs7 - remove sha1 support
Removes support for sha1 signed kernel modules, importing sha1 signed
x.509 certificates.
rsa-pkcs1pad keeps sha1 padding support, which seems to be used by
virtio driver.
sha1 remains available as there are many drivers and subsystems using
it. Note only hmac(sha1) with secret keys remains cryptographically
secure.
In the kernel there are filesystems, IMA, tpm/pcr that appear to be
using sha1. Maybe they can all start to be slowly upgraded to
something else i.e. blake3, ParallelHash, SHAKE256 as needed.
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/module/Kconfig | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/kernel/module/Kconfig b/kernel/module/Kconfig index 33a2e991f608..19a53d5e7736 100644 --- a/kernel/module/Kconfig +++ b/kernel/module/Kconfig @@ -236,10 +236,6 @@ choice possible to load a signed module containing the algorithm to check the signature on that module. -config MODULE_SIG_SHA1 - bool "Sign modules with SHA-1" - select CRYPTO_SHA1 - config MODULE_SIG_SHA224 bool "Sign modules with SHA-224" select CRYPTO_SHA256 @@ -261,7 +257,6 @@ endchoice config MODULE_SIG_HASH string depends on MODULE_SIG || IMA_APPRAISE_MODSIG - default "sha1" if MODULE_SIG_SHA1 default "sha224" if MODULE_SIG_SHA224 default "sha256" if MODULE_SIG_SHA256 default "sha384" if MODULE_SIG_SHA384 |