certgrabber
Summary
Tool to grab x509 certificate(s) from a remote host. By default the certificates will be returned in PEM format but this can be overrwridden to use DER using the --der flag.
Releases
Updated versions are automatically built and released, please see https://github.com/stavinski/certgrabber/releases.
Usage
Usage: ./certgrabber [Options] host:port
Grabs x509 certificate(s) from a remote host, format will default to PEM.
v1.0.0 Mike Cromwell 2022
Options:
-h, --help show this help message and exit
-c, --chain include the chain
-d, --der write in DER format instead of PEM
-w, --wait wait timeout for connection in seconds
-o, --out output to file instead of stdout
Examples
Wait 5 secs return cert in PEM:
./certgrabber --wait 5 google.com:443
Return cert in DER format and write to google.der:
./certgrabber --der --out google.der google.com:443
Return the full cert chain:
./certgrabber --chain google.com:443