Re: Linux 4.3-rc1 build error on CentOS 5.11 "scripts/sign-file.c:23:25: fatal error: openssl/cms.h: No such file or directory"

From: Vinson Lee
Date: Fri Sep 25 2015 - 21:44:08 EST

On Fri, Sep 25, 2015 at 7:24 AM, David Howells <dhowells@xxxxxxxxxx> wrote:
> Here's my patch with the changes squashed into it for reference.
> David
> ---
> commit 81852354cf81402ae69fda4d67138accab2702d5
> Author: David Howells <dhowells@xxxxxxxxxx>
> Date: Thu Sep 24 14:06:02 2015 +0100
> MODSIGN: Change from CMS to PKCS#7 signing if the openssl is too old
> The sign-file.c program actually uses CMS rather than PKCS#7 to sign a file
> since that allows the target X.509 certificate to be specified by
> subjectKeyId rather than by issuer + serialNumber.
> However, older versions of the OpenSSL crypto library (such as may be found
> in CentOS 5.11) don't support CMS. Assume everything prior to
> OpenSSL-1.0.0 doesn't support CMS and switch to using PKCS#7 in that case.
> Further, the pre-1.0.0 OpenSSL only supports PKCS#7 signing with SHA1, so
> give an error from the sign-file script if the caller requests anything
> other than SHA1.
> The compiler gives the following error with an OpenSSL crypto library
> that's too old:
> HOSTCC scripts/sign-file
> scripts/sign-file.c:23:25: fatal error: openssl/cms.h: No such file or directory
> #include <openssl/cms.h>
> Reported-by: Vinson Lee <vlee@xxxxxxxxxxxxxxxx>
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
> Acked-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>

This squashed patch also builds for me on CentOS 5.11.

Linux 4.2-rc2 plus this patch booted up without issue and it appears
this feature is available.

$ dmesg | grep -i 'x.*509'
[ 1.888412] Asymmetric key parser 'x509' registered
[ 3.485152] Loading compiled-in X.509 certificates
[ 3.490659] Loaded X.509 cert 'Build time autogenerated kernel key:

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