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Commit e68503bd68 forgot to set digest_len and thus cause the following
error reported by kexec when launching a crash kernel:
kexec_file_load failed: Bad message
Fixes: e68503bd68 (KEYS: Generalise system_verify_data() to provide access to internal content)
Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
cc: kexec@lists.infradead.org
cc: linux-crypto@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
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Generalise system_verify_data() to provide access to internal content
through a callback. This allows all the PKCS#7 stuff to be hidden inside
this function and removed from the PE file parser and the PKCS#7 test key.
If external content is not required, NULL should be passed as data to the
function. If the callback is not required, that can be set to NULL.
The function is now called verify_pkcs7_signature() to contrast with
verify_pefile_signature() and the definitions of both have been moved into
linux/verification.h along with the key_being_used_for enum.
Signed-off-by: David Howells <dhowells@redhat.com>
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Make the identifier public key and digest algorithm fields text instead of
enum.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add OIDs for sha224, sha284 and sha512 hash algos and use them to select
the hashing algorithm. Without this, something like the following error
might get written to dmesg:
[ 31.829322] PKCS7: Unknown OID: [32] 2.16.840.1.101.3.4.2.3
[ 31.829328] PKCS7: Unknown OID: [180] 2.16.840.1.101.3.4.2.3
[ 31.829330] Unsupported digest algo: 55
Where the 55 on the third line is OID__NR indicating an unknown OID.
Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-By: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: James Morris <james.l.morris@oracle.com>
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The pesign utility had a bug where it was using OID_msIndividualSPKeyPurpose
instead of OID_msPeImageDataObjId - so allow both OIDs.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
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The PKCS#7 certificate should contain a "Microsoft individual code signing"
data blob as its signed content. This blob contains a digest of the signed
content of the PE binary and the OID of the digest algorithm used (typically
SHA256).
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
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