Load DER encoded X.509 Certificate (.cer, .crt)

Loads a digital certificate from a binary DER encoded X.509 Certificate (.cer, .crt) and fetches information about the cert.

 Chilkat Python Module Downloads for Windows, Linux, and MAC OS X

import sys
import chilkat

cert = chilkat.CkCert()

#  LoadFromFile will load virtually any certificate format file.
#  It will auto-recognize the format and load appropiately.
success = cert.LoadFromFile("/Users/chilkat/testData/cer/chilkat_ssl.cer")
if (success != True):
    print cert.lastErrorText()
    sys.exit()

#  DN = "Distinguished Name"
print "SubjectDN:" + cert.subjectDN()

print "Common Name:" + cert.subjectCN()
print "Issuer Common Name:" + cert.issuerCN()

print "Serial Number:" + cert.serialNumber()