readchain This is a small utility to read a chain of PEM-encoded X.509 certificates and print their common names. It was written to quickly see what certificates were in a bundle. It is called with the files containing chains to read passed in as an argument. The program has no knobs or widgets to adjust. Examples: $ readchain google.com.pem microsoft.com.pem [+] google.com.pem: *.google.com Google Internet Authority G2 GeoTrust Global CA [+] microsoft.com.pem: microsoft.com MSIT Machine Auth CA 2 Microsoft Internet Authority
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