Online Text Encrypt & Decrypt Tool

• AES-256 is the industry standard for symmetric encryption
• Encryption requires a password/key — keep it secret and stored safely
• Ciphertext is Base64-encoded for safe text transmission
• Decryption requires the exact same password and algorithm used for encryption
• All encryption/decryption runs locally — no data sent to servers

Use Cases

Frequently Asked Questions

What is AES-256 encryption?

AES-256 is the Advanced Encryption Standard with a 256-bit key, the industry standard for symmetric encryption used by governments and enterprises worldwide.

Is my data safe using this encryption tool?

Yes. All encryption and decryption runs locally in your browser using the Web Crypto API. No data is sent to any server.

Why does decryption fail with the correct password?

Common causes include algorithm mismatch (encrypting with AES but decrypting with TripleDES), modified ciphertext, or extra whitespace in the password.

What is the difference between AES, TripleDES, and RC4?

AES-256 is the modern standard with strong security. TripleDES applies DES three times (slower, legacy). RC4 is a stream cipher considered insecure for new applications.

Can I encrypt files with this tool?

This tool encrypts text strings only. For file encryption, use dedicated tools like GPG, OpenSSL, or your operating system's built-in encryption features.

Is the encrypted output safe to share?

Yes, ciphertext is safe to share publicly — it cannot be decrypted without the password. However, always share the password through a separate secure channel.

Should I use this for production encryption?

Use it for development testing and learning. Production systems should use managed key infrastructure (AWS KMS, Azure Key Vault) with proper key rotation and access controls.