🔐 Text Encrypter & Decrypter

Encrypt and decrypt private text directly in your browser.

🔒 100% Client-Side Processing Your message, password and imported TXT files are processed locally in your browser. This tool does not require an encryption/decryption API.
📄 Import .txt file

Click here or drag and drop a TXT file

Maximum file size: 5 MB
0 / 2 MB
Use a long, unique password.
Encryption format

Encrypted files use:

BUENC:v1-2

This allows the tool to automatically recognize encrypted TXT files.

Encryption format BUENC:v1-2

Security & limits
  • Maximum plaintext size: 2 MB
  • Maximum TXT import size: 5 MB
  • Maximum password length: 256 characters
  • AES-256-GCM authenticated encryption
  • PBKDF2-SHA-256 key derivation
  • 600,000 PBKDF2 iterations
  • Random 128-bit salt generated for every encryption
  • Random 96-bit IV generated for every encryption
  • Random 256-bit encryption key generated for every file
  • Random salt generated for every encryption
  • Random IV generated for every encryption
  • Password is never stored
  • No server-side encryption API is used

Free Online Text Encrypter & Decrypter - Secure AES-256 Encryption

Are you looking for a secure, professional way to encrypt text online free or protect private messages before sending them over public channels? As data tracking, cyber threats, and identity breaches increase worldwide, safeguarding sensitive communication is essential. Our Universal Text Encrypter & Decrypter by ToolShiva.Com delivers an industrial-grade, client-side cryptographic dashboard engineered to secure and decode private messages, passwords, and text files instantly.

Military-Grade AES-256 Cryptography with Complete Client-Side Isolation

Forget standard web tools that process your private data logs through risky external databases or unsecure cloud networks. Our high-performance online text cryptography studio runs on a strict 100% client-side, zero-server framework. Every mathematical calculation—from generating advanced keys to running deep cipher algorithms—takes place right inside your device viewport. Your raw messages and private passwords never touch the internet, providing total defense against data harvesting or surveillance networks globally.

High-Security Technical Architecture & File Importing

Our security suite provides advanced, authenticated cryptographic guardrails aligned with international banking and defense compliance rules. Take a look at the elite parameters backing your data protection:

  • AES-256-GCM Authenticated Cipher: Protects data blocks with the gold standard of modern symmetric encryption algorithms to block unauthorized decryption.
  • PBKDF2-SHA-256 Key Derivation: Converts your secret passwords into robust keys using a massive 600,000 algorithmic hash iterations to stop brute-force hacking.
  • Dynamic Entropy Randomization: Generates unique 128-bit cryptographic salts and 96-bit Initialization Vectors (IV) for every session, ensuring two identical messages never produce the same scrambled output.
  • Seamless TXT Document Importing: Easily type your strings directly or drop raw encrypted text files up to 5 MB using a smart upload tray.

Key Features of Our Universal Crypto Dashboard

  • Automated BUENC Format Labeling: Encrypted payloads utilize the custom BUENC:v1-2 marker, enabling the tool to instantly recognize and decode your text files.
  • Interactive One-Click Management: Easily copy secure cipher text blocks to your local clipboard, download raw encrypted TXT documents, or wipe fields clean.
  • Generous Capacity Allocations: Processes raw text blocks up to a massive 2 MB and supports security passwords up to 256 characters long.
  • Zero Server Connectivity Required: The script runs inside your browser sandbox, eliminating external data transmissions or dependencies on backend web APIs.

Frequently Asked Questions (FAQs)

1. What makes AES-256-GCM encryption safer than older web ciphers?

The AES-256-GCM algorithm not only encrypts your data text securely but also attaches an authentication tag. This ensures that when you run a decryption task, the system instantly verifies that the scrambled message hasn't been edited, corrupted, or tampered with by hackers during transmission, giving you a completely secure communication track.

2. Can I use this encryption tool for private business communications?

Yes, absolutely. Business owners, legal consultants, and privacy-conscious professionals across worldwide frequently use our platform to protect trade secrets, coordinate parameters, protect sensitive client notes, and secure account credentials before sharing them on standard messaging channels like WhatsApp or email. It offers simple, robust data privacy that aligns with modern digital protection standards.

3. Can ToolShiva help me recover my original text if I forget my secret password?

No, recovery is impossible. Because ToolShiva prioritizes absolute zero-knowledge privacy, we never store, log, or track your secret keys or passwords on any server. If you forget your custom password string, the encrypted data text cannot be recovered. We strongly recommend using unique, memorized phrases or a secure password manager.

4. Why does my downloaded file start with the text "BUENC:v1-2"?

The BUENC:v1-2 string acts as a smart structural header flag for our application. When you or your recipient drag that encrypted TXT document back into our online decrypter canvas, this specialized tag allows our engine to instantly identify the cryptographic version, verify the file parameters, and prompt you for the password to reveal the clean, original message seamlessly.

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