jeudi 29 janvier 2015

Obtain X.509 Certificate Fingerprint from Certificate Info



I would like to obtain the SHA1/MD5 fingerprint of an X.509 certificate in order to compare it with the one presented by a server before connecting. However, I currently don't have access to the certificate itself, the only info I have is the output of the openssl x509 -text -noout -in cert.crt command that I was provided (Serial number, Public Key, Exponent, ...). Is it possible to calculate the certificate fingerprint using that information?





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