Fix a few warnings:
idc.c: In function ‘IDC_get’:
idc.c:248:12: warning: ‘idclen’ may be used uninitialised in this function [-Wuninitialized]
image.c: In function ‘image_load’:
image.c:37:15: warning: unused variable ‘bytes_read’ [-Wunused-variable]
Plus, a bunch of strict-aliasing warnings:
image.c:101:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
[ similar warnings trimmed ]
when compiling image.c. Since struct external_PEI_DOS_hdr uses char[]
types for all members, we need to use accessors here.
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Extract the IDC-parsing code from IDC_check_hash, and use it to
initialise a BIO. This BIO can then be used to perform the PKCS7
verification.
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Add a check to match the calculated image's hash against the one found
in the PKCS7 IndirectDataContext
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
GPLv3; the sources include parts of binutils, include parts of ccan,
and have been partially based of osslsigntool.
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
