PrivKey

Protect Your Digital World: Cutting-Edge Private Key Solutions for Ultimate Security

Published Apps

Keep Keep is a FROST (Flexible Round-Optimized Schnorr Threshold Signatures) threshold signing app and dedicated Nostr event signer for Android. It allows users to hold FROST key shares on their phone and sign Nostr events without any single device ever holding the full private key. Keep implements the NIP-55 Android Signer protocol and NIP-46 remote signing, so any compatible Nostr client can request signatures directly. Keep keeps private key material segregated from client apps through NIP-55 and NIP-46, with per-app permissions, background signing, and multiple account support. It splits keys into FROST threshold shares (2-of-3, 3-of-5, etc.) so that no single device ever holds the complete private key. Features: FROST threshold signing (2-of-3, 3-of-5, etc.) NIP-55 Android Signer protocol (intents + content provider) NIP-46 remote signing (bunker service) Import and export FROST shares via QR code or text Import existing nsec keys Multiple account support Per-app signing permissions and policies Signing history and audit log Biometric and PIN authentication Hardware-backed key storage (Android Keystore) Kill switch for emergency key deletion SOCKS proxy support (Tor) NIP-44 encryption and decryption Background signing with configurable rate limits Certificate pinning for relay connections Encrypted backup and restore Bitcoin wallet descriptor coordination (multisig)
Keep Keep is a FROST threshold signing app and dedicated Nostr event signer for Android. It allows users to hold FROST key shares on their phone and sign Nostr events without any single device ever holding the full private key. Keep implements the NIP-55 Android Signer protocol and NIP-46 remote signing, so any compatible Nostr client can request signatures directly.

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