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Extract A Server Certificate From A HTTPS Connection.

DZone's Guide to

Extract A Server Certificate From A HTTPS Connection.

· ·
Free Resource
You can simply extract information about the SSL certificate of HTTP connections using OpenSSL


openssl s_client -connect ${URL}:${PORT}


For example:


openssl s_client -connect checkout.google.com:443


From there, it is only redirecting the output to a file or extracting information out of the stream with Perl.
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