12-Word Recovery Kit & Offline Browser Decryptor

Data loss after an iPhone upgrade, cracked display, or forgotten credential is the most common failure in vault apps. Vaultron builds verifiable recovery into every vault from day one on both the Free and Pro tiers.

12-Word BIP-39 Recovery Phrase (Slot 1)

Generated offline during onboarding from 128 bits of CSPRNG entropy. Reset a forgotten PIN, passphrase, or 5x5 pattern locally on your iPhone or iPad without losing a single encrypted file.

Printable US-Letter Recovery Kit PDF

Generate a clean single-page PDF recovery sheet stamped with your vault UUID, creation timestamp, 12-word recovery phrase, and offline recovery instructions for physical storage.

Single-File HTML Offline Decryptor

Open multi-gigabyte 64-bit ZIP64 .vaultbackup archives in Safari, Chrome, Edge, or Firefox on macOS, Windows, or Linux with Wi-Fi turned off (enforced via Content-Security-Policy: default-src 'none').

5-Step In-RAM Backup Verifier

Before wiping an old iPhone, run a read-only cryptographic audit that verifies manifest.json, unwraps vault_header.bin, runs SQLite PRAGMA integrity_check in mlock RAM, and validates every chunk GCM tag.

Implementation Details

Portable Archive Container 64-bit ZIP64 (.vaultbackup) supporting > 4 GiB libraries via streaming Blob.slice()

Browser Cryptography Native W3C WebCrypto SubtleCrypto (PBKDF2, HKDF, AES-GCM) with 0 external dependencies

Network Isolation HTTP header and meta Content-Security-Policy: default-src 'none'

Never-Hostage Policy Unlocking, viewing, sharing, and .vaultbackup export remain free forever regardless of subscription state

Questions & Answers

What happens if Treegarden Software Ltd stops operating 15 years from now?

Save a copy of emergency_decryptor.html (72 KB) alongside your .vaultbackup archive on a USB drive or external SSD. Because it relies exclusively on standard browser WebCrypto APIs with zero external network calls, your files remain recoverable offline on any computer.