Client-side encrypted storage for Expo, React Native, and Node. X25519 + HPKE (RFC 9180), XChaCha20-Poly1305 AEAD, and 24-word BIP39 recovery — pure JavaScript, no native code, no prebuild, runs in Expo Go.
nodejs android ios cryptography typescript react-native encryption aead x25519 mnemonic bip39 end-to-end-encryption expo secure-storage key-derivation-function key-derivation hpke expo-go seed-phrases-generator rcf9180
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Updated
Aug 7, 2026 - TypeScript