Secure Text Vault
AES-256 encryption that never leaves your browser
🔓 No password — anyone with the ciphertext can decrypt
Security Features
Free Online Text Encryption Tool — Secure Text Vault
Privacy matters. Whether you are sending someone a sensitive message, storing a password, or keeping personal notes private, you need a way to encrypt text that you can trust. Most encryption tools require an account, store your data on their servers, or use methods that are not transparent. Secure Text Vault is different.
This tool uses AES-256 encryption — the same standard used by banks and governments — directly in your browser. Nothing is ever sent to a server. Your text, your password, and your encrypted output all stay on your device. You can encrypt with or without a password. If you use a password, you can also set up three security questions for recovery if you forget it.
The encrypted output is further obfuscated with random chunking and proprietary markers. It can only be decrypted using this exact tool. Copy the output, download it as a text file, or share it however you like. No one can read it without the correct password.
How Secure Text Vault Works
AES-256 Encryption
Your text is encrypted using AES-GCM with a 256-bit key. This is the same algorithm used by governments and financial institutions to protect classified data.
PBKDF2 Key Derivation
Your password is converted into an encryption key using PBKDF2 with 100,000 iterations and SHA-256. This makes brute-force attacks extremely slow.
Password Recovery
Set three security questions during encryption. If you forget your password, answer the questions correctly to recover it. Answers are hashed with SHA-256.
Custom Obfuscation
After encryption, the output is split into random-sized chunks and wrapped with proprietary markers. This makes it impossible to identify the encryption method.
File Signature
Every encrypted message starts with a STVAULT1.0 signature. The tool validates this before decryption, preventing errors from invalid input.
Zero Server Contact
Everything runs using the Web Crypto API built into your browser. No data is sent to any server. No analytics, no logging, no tracking.