Hi Saruabh, I think https://cryptography.io/en/latest/hazmat/primitives/asymmetric/serialization.html#cryptography.hazmat.primitives.serialization.load_pem_public_key should work. Notwithstanding the docs, I believe it'll load an X25519PublicKey :-) If that works for you, let us know and I'll make sure we fix those docs.
Alex On Wed, Mar 10, 2021 at 11:56 AM Saurabh Kapoor <saur...@fintify.com> wrote: > > Hi, > > A service we communicate with sends us their Curve25519 public key as a PEM > file. The key is DER encoded and the format is X.509's SubjectPublicKeyInfo. > > We would like to create a > cryptography.hazmat.primitives.asymmetric.x25519.X25519PublicKey for this > object but I am unable to find the routines to load such keys. > X25519PublicKey.load_public_bytes(..) expects a raw key. > > Using the following openssl command I can examine the key: openssl asn1parse > -in pub_key.pem > > Any suggestions on how my service written in Python can load this kind of a > public key? I've also posted a slightly more detailed question here: > https://stackoverflow.com/questions/66492939/python-decoding-an-ecdh-curve-25519-public-key-encoded-as-a-pem-file > > regards, > Saurabh > _______________________________________________ > Cryptography-dev mailing list > Cryptography-dev@python.org > https://mail.python.org/mailman/listinfo/cryptography-dev -- All that is necessary for evil to succeed is for good people to do nothing. _______________________________________________ Cryptography-dev mailing list Cryptography-dev@python.org https://mail.python.org/mailman/listinfo/cryptography-dev
