Support encryption & decryption for jwts

[jmlow]

This PR proposes an implementation of jose's 'EncryptJWT' class and 'jwtDecrypt()' function in 'encrypt()' and 'decrypt()' methods on the '@elysiajs/jwt' plugin. Below I've listed the key changes:

1. I've added an interface for JWE Headers and incorporated it into the JWTOption interface.
2. The 'encrypt()' method is modeled after the current implementation of 'sign()' with changes to account for the differences between 'SignJWT.sign()' and 'EncryptJWT.encrypt()' in jose.
3. Similarly, the 'decrypt()' method is modeled after the current implementation of 'verify()', including the passing of jose's options through 'verify()' from my previous PR feat: add optional, typed 'options' argument to jwt.verify() and pass to jose jwtVerify() if present #110 .

Transparently, this is pushing into territory where I want someone to double-check my work, and this proposal doesn't yet include supporting test code.

Lastly, because this implementation is based closely on jose's, it has the same limitation of supporting only signing OR encrypting JWTs, not signing THEN encrypting. To solve for that, I'm prototyping a separate '@elysiajs/jwe' plugin that implements jose's 'CompactEncrypt' class and 'compactDecrypt()' function with dedicated publicKey, privateKey, or secret properties for encryption/decryption.

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>, please review it.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Support

Need help? Create a ticket on our support page for assistance with any issues or questions.

CodeRabbit Commands (Invoked using PR/Issue comments)

Type @coderabbitai help to get the list of available commands.

Other keywords and placeholders

• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Status, Documentation and Community

• Visit our Status Page to check the current availability of CodeRabbit.
• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.