NSEQ

nseq − create or examine a netscape certificate sequence

openssl nseq [−in filename] [−out filename] [−toseq]

The nseq command takes a file containing a Netscape certificate sequence and prints out the certificates contained in it or takes a file of certificates and converts it into a Netscape certificate sequence.

−in filename

This specifies the input filename to read or standard input if this option is not specified.

−out filename

specifies the output filename or standard output by default.

−toseq

normally a Netscape certificate sequence will be input and the output is the certificates contained in it. With the −toseq option the situation is reversed: a Netscape certificate sequence is created from a file of certificates.

Output the certificates in a Netscape certificate sequence

 openssl nseq −in nseq.pem −out certs.pem

Create a Netscape certificate sequence

 openssl nseq −in certs.pem −toseq −out nseq.pem

The PEM encoded form uses the same headers and footers as a certificate:

 −−−−−BEGIN CERTIFICATE−−−−−
 −−−−−END CERTIFICATE−−−−−

A Netscape certificate sequence is a Netscape specific form that can be sent to browsers as an alternative to the standard PKCS#7 format when several certificates are sent to the browser: for example during certificate enrollment. It is used by Netscape certificate server for example.

This program needs a few more options: like allowing DER or PEM input and output files and allowing multiple certificate files to be used.