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AES Encryption Tool

Encrypt and decrypt text using AES-256-GCM. Everything runs in your browser — nothing is sent to any server.

🔒 Client-side only · AES-256-GCM
Algorithm
AES-GCM
Key Size
256-bit
Key Derivation
PBKDF2

📖 How It Works

This tool uses the Web Crypto API built into your browser:

  • PBKDF2 derives a 256-bit key from your passphrase (100,000 iterations with SHA-256)
  • AES-GCM encrypts the data with a random 12-byte IV for each encryption
  • The output is Base64-encoded and includes the salt + IV + ciphertext
  • Decryption requires the exact same passphrase

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