[PATCH 5/6] crypto: enable automatic module signing with FIPS 202 SHA-3
STALE1073d
From: Dimitri John Ledkov <hidden>
Date: 2023-10-22 18:23:11
Also in:
keyrings, linux-crypto, lkml
Subsystem:
certificate handling, module support, the rest · Maintainers:
David Howells, David Woodhouse, Luis Chamberlain, Petr Pavlu, Daniel Gomez, Sami Tolvanen, Linus Torvalds
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 <redacted> --- certs/Kconfig | 2 +- kernel/module/Kconfig | 15 +++++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/certs/Kconfig b/certs/Kconfig
index 84582de66b..69d192a32d 100644
--- a/certs/Kconfig
+++ b/certs/Kconfig@@ -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
diff --git a/kernel/module/Kconfig b/kernel/module/Kconfig
index 9d7d45525f..0ea1b2970a 100644
--- a/kernel/module/Kconfig
+++ b/kernel/module/Kconfig@@ -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"
--
2.34.1