feat: implement Web Crypto API encryption/decryption utilities #43
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- Created lib/crypto.ts with AES-GCM encryption using Web Crypto API - Implemented generateEncryptionKey() for 256-bit key generation - Added exportKey() and importKey() for base64url key serialization - Implemented encrypt() and decrypt() with fresh IV generation - Added URL utilities for shareable link generation - Created comprehensive test suite with 24 passing tests - Fixed base64 encoding for large data (chunked encoding) - All functions are edge-runtime compatible Closes #36 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <claude@ghostpaste.dev>
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
ghostpaste | 6edfc24 | Visit preview | Jun 06 2025, 08:09 AM |
- Changed EncryptedData interface to use Uint8Array instead of base64 strings - Added packEncryptedBlob() and unpackEncryptedBlob() for blob storage format - Added high-level encryptAndPack() and unpackAndDecrypt() convenience functions - Storage format now matches spec: [12 bytes IV][Encrypted data] - Reduces storage size by ~33% (eliminates base64 encoding overhead) - Keys remain base64url encoded for URL sharing - Updated all tests to work with binary data - Added 7 new tests for blob packing/unpacking 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <claude@ghostpaste.dev>
- All Web Crypto API tasks completed - Issue #36 fully implemented 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <claude@ghostpaste.dev>
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Summary
Implementation Details
Core Functions
generateEncryptionKey()- Generates 256-bit AES keysexportKey()/importKey()- Base64url key serialization for URL safetyencrypt()/decrypt()- AES-GCM encryption with fresh IV generationgenerateShareableUrl()- Creates shareable links with keys in fragmentsextractKeyFromUrl()- Extracts keys from URL fragmentsKey Features
Technical Decisions
Test Results
Closes #36
🤖 Generated with Claude Code