#Cryptography

XChaCha20-Poly1305, AEAD, nonces — the crypto primitives behind tene's local-first vault and why they outperform classic AES-GCM.

2 articles

EngineeringApr 27, 2026 · 12 min read
The 12-word recovery key: how a local vault survives a forgotten password
How a 12-word BIP-39 mnemonic lets a local-first secret vault survive a forgotten master password — without a cloud account or email reset.
#cryptography#deep-dive+2 more
EngineeringApr 21, 2026 · 9 min read
XChaCha20-Poly1305 for developers: why it is the right choice for local secrets
A practical explanation of XChaCha20-Poly1305 and why tene picked it over AES-GCM for a local-first secret vault. No PhD required.
#cryptography#architecture+2 more