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x509: select CONFIG_CRYPTO_LIB_SHA256

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The x509 public key code gained a dependency on the sha256 hash
implementation, causing a rare link time failure in randconfig
builds:

  arm-linux-gnueabi-ld: crypto/asymmetric_keys/x509_public_key.o: in function `x509_get_sig_params':
  x509_public_key.c:(.text.x509_get_sig_params+0x12): undefined reference to `sha256'
  arm-linux-gnueabi-ld: (sha256): Unknown destination type (ARM/Thumb) in crypto/asymmetric_keys/x509_public_key.o
  x509_public_key.c:(.text.x509_get_sig_params+0x12): dangerous relocation: unsupported relocation

Select the necessary library code from Kconfig.

Fixes: 2c62068ac8 ("x509: Separately calculate sha256 for blacklist")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Arnd Bergmann 2026-02-17 08:26:49 +00:00 • committed by Linus Torvalds
parent fd1d6b9d13
commit 746b9ef5d5
1 changed files with 1 additions and 0 deletions
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crypto/asymmetric_keys/Kconfig
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@ -27,6 +27,7 @@ config X509_CERTIFICATE_PARSER
tristate "X.509 certificate parser"
depends on ASYMMETRIC_PUBLIC_KEY_SUBTYPE
select ASN1
select CRYPTO_LIB_SHA256
select OID_REGISTRY
help
This option provides support for parsing X.509 format blobs for key