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About OoKey Password Manager
OoKey is a zero-knowledge password manager. It securely stores your
passwords on your own device and autofills saved credentials into
login forms across the web.
━━ Key Features ━━
🔒 Zero-knowledge architecture
Your master password, encryption keys, and vault contents are never
stored on OoKey servers. The server holds only AES-256-GCM ciphertext
that cannot be decrypted by OoKey or any third party.
🔑 Strong cryptography
Key derivation uses Argon2id with 64 MiB memory cost and 3 iterations.
Symmetric encryption uses AES-256-GCM. Authentication uses SRP-6a, a
zero-knowledge password proof. The optional recovery key is a 24-word
BIP-39 mnemonic.
⚡Autofill
OoKey detects login forms automatically and fills your saved
credentials in a single click. When you sign in on a new site, an
inline prompt offers to save the credentials to your vault.
🛡️Password generator
The built-in generator supports customizable length, character
classes, passphrases, and usernames. It shows real-time strength
feedback and a short history of recently generated values.
📊 Security report
A local report flags weak passwords, reused passwords, sites that use
plain HTTP, and items missing two-factor authentication. The report
runs entirely on your device, with no external API calls.
🌐 Cross-browser
Works on Chrome, Edge, Firefox, and Safari. Your vault syncs across
browsers and devices through your OoKey account.
📤 Data portability
Export your vault to JSON, CSV, or ZIP at any time. Your data remains
under your control and is portable to other password managers.
🆘 Emergency access
Designate trusted contacts who can request access to your vault in an
emergency. Two-layer encryption (RSA-OAEP-2048 + AES-256-GCM) ensures
only an authorized contact can decrypt during the takeover window.
📨 OoKey Send
Share passwords or short notes through expiring, encrypted links.
Recipients do not need an OoKey account. You can set link expiration
and view-count limits.
━━ Privacy and Security ━━
✅ OoKey does not contact any third-party service. There is no breach
database lookup, no analytics, no crash reporter, and no advertising
telemetry. The only network destination is the OoKey API.
✅ Servers are hosted in AWS Tokyo (ap-northeast-1). All data remains in
Japan. TLS 1.2 or higher is enforced, with HSTS and SameSite=None
Secure cookies. Refresh tokens rotate on every use, with reuse
detection that revokes the session on suspected theft.
✅ Full technical documentation is available at https://ookey.jp/#docs.
━━ Permissions Justification ━━
✅storage : Cache encrypted vault data locally for offline use.
✅activeTab : Read and fill form fields on the currently focused tab when the user invokes autofill.
✅scripting : Inject the autofill content script on demand.
✅contextMenus : Provide the right-click autofill menu.
✅alarms : Run the idle auto-lock timer in the background.
✅notifications : Show "Saved to vault" and breach-warning prompts.
━━ About the Developer ━━
OoKey is developed and operated by GOMOAL Inc., Tokyo, Japan.
Website: https://ookey.jp
Privacy Policy : https://ookey.jp/#privacy
Terms: https://ookey.jp/#terms
Support : nfo@gomoal.co.jp
Source code: https://github.com/gomogy/ookey-browser
With a zero-knowledge architecture, no one — including the developer
— can read your vault.