https://github.com/PatrickRoumanoff/js-keygen
ssh-keygen in the browser
https://github.com/PatrickRoumanoff/js-keygen
chrome chromebook jwk ssh-key-pair ssh-keygen webcrypto-api
Last synced: 20 days ago
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ssh-keygen in the browser
- Host: GitHub
- URL: https://github.com/PatrickRoumanoff/js-keygen
- Owner: PatrickRoumanoff
- License: other
- Created: 2015-09-03T11:58:54.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2021-01-21T23:36:03.000Z (over 4 years ago)
- Last Synced: 2024-11-16T18:34:13.889Z (6 months ago)
- Topics: chrome, chromebook, jwk, ssh-key-pair, ssh-keygen, webcrypto-api
- Language: JavaScript
- Homepage: https://js-keygen.surge.sh/
- Size: 84 KB
- Stars: 96
- Watchers: 5
- Forks: 17
- Open Issues: 0
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Metadata Files:
- Readme: README.md
- License: LICENSE.md
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README
# Generate a ssh keypair using the webcrypto API
See the live demo at https://js-keygen.surge.sh
For some explanation see http://blog.roumanoff.com/2015/09/using-webcrypto-api-to-generate-keypair.html
There is no way to generate a ssh keypair on a chromebook, but we have access to chrome and the webcrypto API. I had to do all sorts of gymnastics to convert the generated keypair to something that can be consummed by SSH.
* I had to learn about the WebCrypto API - which was the initial goal
* I had to learn about JWK
* I had to leanr about base64url encoding (thanks JWK) and how to convert it to and form base64 encoding
* I had to learn about ASN.1 to encode the private key for OpenSSH
* I had to lean about the open SSH public format to encode the public key for OpenSSH
The end result is a usable single page app that will locally generate a keypair you can save to local drive. Allowing you to do that straight from chrome on a chrome book.
Everywhere else, you should have access to ssh-keygen which is the recommended way to generate keypair for SSH.
## How to convert from OpenSSH public key format to PEM
see https://js-keygen.surge.sh/convert.html for how to convert.