How to dump all certificates from a file?

[David von Oheimb]

I also had this problem several years back but did not find the nifty
though counter-intuitive workaround using cr2pkcs7 given below.

Since then I've been using a Perl script like this:

> #!/usr/bin/perl
> $/ = '-----END CERTIFICATE-----';
> while(<>) {
>     if(m|$/|s) {
>         print STDERR "########## $ARGV ##########\n";
>         system "echo '$_' | openssl x509 -noout -text";
>     }
> }

which unfortunately does not work with "TRUSTED CERTIFICATE".

I think the x509 command should be extended to print all certs.

	David

On 7 April 2021 04:58:38 CEST, Nan Xiao <xiaonan830818 at gmail.com> wrote:
> Hi Viktor,
> 
> > By "a file" you clearly mean a "PEM file" with one or more certificates
> exclosed in "-----BEGIN ...".."-----END ..." delimiters.
> 
> Yes, this is what I mean.
> 
> > openssl crl2pkcs7 -nocrl -certfile somefile.pem |
>         opessl pkcs7 -print_certs -text
> 
> Works like a charm! Thanks very much for your time and quick response!
> 
> Best Regards
> Nan Xiao
> 
> On Wed, Apr 7, 2021 at 10:46 AM Viktor Dukhovni
> <openssl-users at dukhovni.org> wrote:
> >
> > On Wed, Apr 07, 2021 at 10:14:42AM +0800, Nan Xiao wrote:
> >
> > > Greetings from me! By default openssl-x509 can only dump one
> > > certificate from the file:
> >
> > By "a file" you clearly mean a "PEM file" with one or more certificates
> > exclosed in "-----BEGIN ...".."-----END ..." delimiters.  With that
> > proviso, the command in question is:
> >
> >     openssl crl2pkcs7 -nocrl -certfile somefile.pem |
> >         opessl pkcs7 -print_certs -text
> >
> > The output format can be tweaked slightly, though not quite as much as
> > will "openssl x509".  See the pkcs7(1) manpage for details.
> >
> > --
> >     Viktor.
>