[Cryptography-dev] Processing public key algorithm 'ecdsa-with-SHA256'

[Paul Kehrer]

The addition of an examples section in x509 to cover common questions like
this might be useful actually. If you're interested in submitting a PR
adding that we'd be happy to review!

-Paul

On April 24, 2017 at 2:24:00 AM, Paul King via Cryptography-dev (
cryptography-dev at python.org) wrote:


Sorry. Being very stupid.

from cryptography.hazmat.primitives.asymmetric import ec
print isinstance(cert.public_key(), ec.EllipticCurvePublicKey)



On 24 Apr 2017, at 08:21, Paul King via Cryptography-dev <
cryptography-dev at python.org> wrote:

Thanks Alex.

I am now appreciating how good your documentation is!

I am struggling to do a test for the type of public key. In the
documentation it shows an example for RSA but I am too stupid to get it to
work.


            print cert.public_key()
<cryptography.hazmat.backends.openssl.ec._EllipticCurvePublicKey object at
0x102b5a3d0>

            print type( cert.public_key() )
<class 'cryptography.hazmat.backends.openssl.ec._EllipticCurvePublicKey’>

How do I test for that?



On 21 Apr 2017, at 02:07, Alex Gaynor <alex.gaynor at gmail.com> wrote:

(Please reply to the full mailing lists)

https://cryptography.io/en/latest/hazmat/primitives/asymmetric/ec/#cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey
describes the methods that an EllipticCurvePublicKey has for exporting the
key, either to bytes or ot raw numbers.

Alex


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