https://github.com/donuts-are-good/curvy

ed25519 -> x25519
https://github.com/donuts-are-good/curvy

cryptography ed25519 signing verification x25519

Last synced: 4 months ago
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ed25519 -> x25519

• Host: GitHub
• URL: https://github.com/donuts-are-good/curvy
• Owner: donuts-are-good
• License: mit
• Created: 2023-02-10T05:44:39.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2023-02-10T07:17:45.000Z (over 3 years ago)
• Last Synced: 2025-10-22T17:46:11.531Z (8 months ago)
• Topics: cryptography, ed25519, signing, verification, x25519
• Language: Go
• Homepage:
• Size: 4.88 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
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# curvy

`ed25519` -> `x25519` 

## what?

`ed25519` is for signing, `x25519` is for encrypting. 

this thing generates a set of `ed25519` keys, then uses them to derive a set of `x25519` keys.

## what? -vv

ok so if you generate some ssh keys right now, you're going to get some type of dollar store brand rsa keys, unless you tell `ssh-keygen` that you want to make a set of the good ones.  you can use these to 'sign' things, and your friends can use your 'signature' to verify for themselves that nothing was tampered with.

`x25519` is for encrypting, and like `ed25519` there is a public key and a private key. `x25519` is for encrypting, which is different than signing.

## What? -vv -still

eventually I'd like to take this a bit further and turn this repo into an `edx25519` tool like Fellipo described in this [article](https://words.filippo.io/using-ed25519-keys-for-encryption/)

i guess it's not a good idea to reuse keys and such, so definitely don't use this, and if you get jammed up using this, just tell them you were holding it for a friend.