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CkPython

Convert to DER encoded X.509 Certificate (.cer, .crt)

See more Certificates Examples

Loads a digital certificate from any format and saves to a binary DER encoded X.509 Certificate (.cer, .crt).

Chilkat CkPython Downloads

CkPython
import sys
import chilkat

success = False

cert = chilkat.CkCert()

# LoadFromFile will load virtually any certificate format file.
# It will auto-recognize the format and load appropiately.
# In this case, load a PEM format certificate and convert to DER.
success = cert.LoadFromFile("/Users/chilkat/testData/pem/chilkat.pem")
if (success != True):
    print(cert.lastErrorText())
    sys.exit()

success = cert.ExportCertDerFile("chilkat.der")
if (success != True):
    print(cert.lastErrorText())
    sys.exit()

print("Converted certificate from PEM to DER format.")