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Re:SSL tools we wish we'd known about earlier by bifurcation on Wednesday July 29, 2015 @09:28AM (#9968439)
Other things I use all the time:

`openssl x509 -in $FILE -text | less`

https://lapo.it/asn1js

https://golang.org/pkg/crypto/x509/

https://github.com/agl/certificatetransparency

Re:SSL tools we wish we'd known about earlier by Nursie on Wednesday July 29, 2015 @09:47AM (#9968560)
There's a load of useful stuff in the OpenSSL commandline, figuring out s_server and s_client can be very useful for debugging.

GnuTLS has some useful stuff too, IIRC