Security Tools/Text Encryption
Text Encryption
Encrypt and decrypt text with AES-256
Input
Result
Security Information
All encryption/decryption is processed locally in your browser. Passwords and data are never sent to any server. AES-256-GCM is the most secure symmetric encryption that ensures both confidentiality and integrity.
Text Encryption Guide
Protect sensitive text with AES-256 encryption
What is Text Encryption?
Text encryption converts plaintext into ciphertext, making it unreadable to unauthorized people. Only those who know the password can restore the original text.
How to Use
- Select encrypt or decrypt mode
- Choose encryption algorithm (AES-GCM recommended)
- Enter a strong password
- Input text and run encryption/decryption
Security Tips
- Use a strong password (12+ characters, include special characters)
- Store password and ciphertext separately
- Use the same algorithm for decryption
Technical Details
AES-256 encryption using Web Crypto API. PBKDF2 for password-based key derivation (100,000 iterations). Random salt and IV ensure different ciphertext even for same data.
Frequently Asked Questions
What's the difference between AES-GCM and AES-CBC?
AES-GCM provides both encryption and data integrity verification (authentication). If data is tampered with, decryption fails. AES-CBC only provides encryption, requiring separate integrity checks. Use AES-GCM when possible.
What if I forget my password?
Decryption without the password is impossible. AES-256 is practically immune to brute force attacks with current technology. Keep your password secure.
Where is encrypted data stored?
This tool doesn't store any data. All processing happens locally in your browser, and data disappears when you close the page. Copy the ciphertext to a safe location.
Why do I get different results encrypting the same text?
Random salt and IV (Initialization Vector) are generated each time, producing different ciphertext even with identical text and password. This enhances security by preventing pattern analysis attacks.
How secure is this encryption?
AES-256 is military-grade encryption used for US government classified documents. PBKDF2 with 100,000 iterations strengthens password-based key derivation. With a sufficiently strong password, decryption is practically impossible with current technology.