nmemmertandClaude Sonnet 4.6
7351f9048a
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X25519 Web Crypto support is not available in Electron's Chromium build
despite being in Chrome 113+. P-256 ECDH is universally supported across
all browsers and Electron versions with equivalent security.
- Replace { name: 'X25519' } with { name: 'ECDH', namedCurve: 'P-256' }
throughout the keypair generation, sealing, and opening functions
- Wire format updated: ephemeral pub key grows from 32 to 65 bytes
(uncompressed P-256 point: 0x04 || x || y)
- Existing accounts with X25519 keys must re-register
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>