Edwards curves are not compatible with ECDH

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
cryptography

Research direction

Reproduce ECDH initialization with Ed25519 and trace the failing access to PrivateKey.secret_multiplier, then compare it with the __s attribute in eddsa.PrivateKey. Done means Ed25519 keys can initialize ECDH and compute a shared secret without the AttributeError.

Written by the indexing model from the issue text.

Description

feature help wanted

After trying to initialize ECDH with Ed25519 and compute a shared secret it returns the following error:

AttributeError: 'PrivateKey' object has no attribute 'secret_multiplier'

I believe it's called __s in eddsa.PrivateKey class.

Dominant language
Python
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Forks
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