AES Encryption
Encrypt and decrypt with AES-256-GCM
What is AES Encryption?
AES Encryption tool encrypts and decrypts data using the AES-256-GCM (Galois/Counter Mode) algorithm — an authenticated encryption scheme that provides both confidentiality and integrity. Data is encrypted entirely in your browser.
When to use this tool
- Encrypting sensitive data before storage or transmission
- Decrypting AES-encrypted messages or files
- Protecting configuration values with a passphrase
- Securing data in transit between systems
How it works
Derives a 256-bit key from your passphrase using PBKDF2 with a random salt and 100,000 iterations. Encrypts the plaintext with AES-256-GCM, producing a ciphertext that includes an authentication tag (16 bytes) to detect tampering. The salt, IV, and tag are prepended to the output.
Security Guidelines
- Use a strong passphrase — the security of AES-256-GCM depends on key strength
- Never reuse the same passphrase and plaintext combination without a new salt
- AES-256-GCM is authenticated — decryption will fail if the ciphertext is tampered with
- Store salts and IVs with the ciphertext (they are not secret)
- For password-based encryption, PBKDF2 with 100k+ iterations is recommended by NIST
About AES Encryption
Encrypt and decrypt with AES-256-GCM It runs entirely in your browser — no files are uploaded to any server, ensuring complete privacy and instant results.
- •Generate strong random passwords
- •Create UUIDs v4 and v7
- •Encrypt and decrypt with AES-256
- •Check password strength and entropy
Last updated: 2025-01-15
FAQ
Encrypt and decrypt with AES-256-GCM
Yes, completely free. No signup required.
Yes. Runs entirely in your browser, no files uploaded.
Yes, works on any device with a modern browser.
No, everything runs in your browser.