Your Phone Is The Encryption Engine.
Zero cloud sync. Zero cache footprint. Native Android Storage Access Framework (SAF) stream locks any document in-place with hardware POSIX write barriers and atomic crash checkpoints.
Works Everywhere You Do • Bit-Compatible Across All Platforms
Built for Speed. Hardened for Life.
Everything you need to secure your files without the friction of bloated software or cloud subscriptions.
Zero Temporary Disk Bloat
Old-school archivers clone your entire 50 GB file into a secret temp folder before locking it, filling your SSD. Universal Vault encrypts bytes right where they sit.
600,000 PBKDF2 Rounds
OWASP Gold Standard security. 600,000 rounds of cryptographic seasoning with 32 random salt bytes makes supercomputer rainbow tables mathematically useless.
Automatic Crash Recovery
Battery ran out or laptop shut down midway? The 104-byte binary footer tracks the exact block offset so you can resume immediately with zero corrupted files.
POSIX Silicon Write Barriers
Flushes dirty OS kernel buffers directly to physical non-volatile silicon on every 1 MB boundary. Sudden unmounts can't eat your hard work.
Tiny < 3 MB Standalone Binary
Crafted in pure Go without Node.js, Python, or external DLL dependencies. Launches in 4 milliseconds flat — faster than you can click.
100% Offline by Design
Zero network packets. Zero analytics. Zero telemetry beacons. Your passwords, filenames, and plaintexts stay securely within your device.
Why In-Place Encryption Matters for Big Data
Streams directly through low-level OS file channels. Zero temporary files created in /tmp or app cache. Flushes atomically to silicon on every 1 MB block.
Must create a duplicate copy of the entire file in staging disk before writing the archive. If your drive has less than 100 GB free, the operation crashes mid-way, leaving uncollected temporary fragments.
Three Simple Steps. Zero Compromises.
Universal Vault replaces complex corporate encryption setups with a lean, bit-perfect streaming engine.
Cryptographic Key Setup
A unique 32-byte cryptographic salt is combined with your passphrase through 600,000 PBKDF2-HMAC-SHA256 iterations to forge an unguessable 256-bit key.
Zero-Bloat Transmutation
Bytes are encrypted directly on disk in 64 KB chunks via AES-256-CTR. Hardware POSIX barriers sync data every 1 MB to prevent corrupted files if power is lost.
Tamper-Proof Seal
The process appends an atomic resumption checkpoint and an HMAC-SHA256 signature tag. If even 1 bit is altered or tampered with, Universal Vault detects it instantly.
🔬Developer Deep Dive: Inspect Raw Bit-Level Hex Offsets↓
00000000: 5641 554c 5456 3035 9a2b c481 0e55 f102 |VAULTV05.+...U..|
00000010: 7c88 d31a 4b90 ee11 ff7a 3209 bb84 a1c0 ||...K....z2.....| (32B PBKDF2 Salt)
00000020: 0009 27c0 0100 0000 0000 0000 0000 0000 |..'.............| (600,000 Iterations BE)
00000030: 2f7a 8812 00bc d4ea 90ff c144 0000 0000 |/z.........D....| (AES-256 CTR IV)
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Your Files Belong to You.
Keep Them That Way.
Zero setup. Zero accounts. Zero telemetry. Download the binary, run a single command, and lock your files with mathematical certainty.