pefile: Parse the "Microsoft individual code signing" data blob

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>

diff --cc crypto/asymmetric_keys/Makefile
Simple merge

diff --cc crypto/asymmetric_keys/mscode.asn1
Simple merge

diff --cc crypto/asymmetric_keys/mscode_parser.c
Simple merge

diff --cc crypto/asymmetric_keys/verify_pefile.c
Simple merge

diff --cc crypto/asymmetric_keys/verify_pefile.h
Simple merge

diff --cc include/linux/oid_registry.h
Simple merge