AES-GCM Raw Key Encrypt & Decrypt

Use AES-GCM directly for interoperability testing when you already have key bytes, instead of deriving a key from a passphrase.

Key format

Raw AES key

IV (hex)

Additional authenticated data (optional text)

Plaintext

Ciphertext + 128-bit tag (Base64)

ReadyChanging the key, IV, ciphertext, or AAD causes authenticated decryption to fail.

All cryptographic operations run locally in your browser. Keep private keys secret and use production key-management practices for real systems.

How to use this AES-GCM Raw Key Encrypt & Decrypt

Encrypt and decrypt text with an explicit raw AES key, IV, and optional additional authenticated data. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.