feat: encrypt config.json at rest with AES-256-GCM#41
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lohnim wants to merge 2 commits intochris/authfrom
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feat: encrypt config.json at rest with AES-256-GCM#41lohnim wants to merge 2 commits intochris/authfrom
lohnim wants to merge 2 commits intochris/authfrom
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Derive a machine-bound key via PBKDF2 from hostname + uid + username and encrypt the config file with AES-256-GCM. Existing plaintext configs auto-migrate on first load. Also fixes test isolation for XDG_CONFIG_HOME/ALCHEMY_CONFIG env vars. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Instead of silently returning empty config, print a message explaining the likely cause (different machine / hostname change), back up the unreadable file to config.json.bak, and suggest reconfiguring. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
XDG_CONFIG_HOME/ALCHEMY_CONFIGenv varsDetails
The encrypted format uses an
ALCH_ENCmagic prefix + version byte + random salt/IV, making it distinguishable from plaintext JSON. File permissions remain0600. Corrupted or unreadable files gracefully fall back to empty config with a warning.Test plan
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