openssl - How can I verify an X509 certificate in python including a CRL check? -

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i'm trying verify x509 certificate using python. in particular need check crls when it.

now, can use m2crypto this, can't find option corresponding openssl's -crl_check or -crl_check_all.

alternatively, use pipe , call openssl directly:

p1 = popen(["openssl", "verify", "-capath", capath, "-crl_check_all"],             stdin = pipe, stdout = pipe, stderr = pipe)  message, error = p1.communicate(certificate) exit_code = p1.returncode

however, seems openssl verify returns exit code 0, have compare strings somehow tell if verification successful, i'd prefer not do.

am missing simple here?

thanks.

ok, i've done this:

p1 = popen(["openssl", "verify", "-capath", capath, "-crl_check_all"],             stdin = pipe, stdout = pipe, stderr = pipe)  message, error = p1.communicate(certificate)  verified = ("ok" in message , not "error" in message)

it's not have chosen. has passed tests, i'm not work. don't know c enough read openssl source code , verify it.

if can find situation fail, please comment.


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