certigo

Certigo is a utility to examine and validate certificates in a variety of formats.

Install

To install certigo, simply use:

go get github.com/square/certigo

Note that certigo requires Go 1.6 or later to build.

Develop

We use glide for managing vendored dependencies.

Usage

Certigo can read certificates/keystores in various formats and dump them to stdout.

Currently supported formats are DER, PEM, JCEKS and PKCS12. It's a one-stop shop for debugging/analyzing certs.

For example (from stdin):

Or from a file:

You can dump a cert chain from a TLS server. Unlike openssl x509 -text, certigo will dump the entire chain, not just the first certificate: