Does this AES decryption tool upload my payload or password?

No. Decryption happens locally in your browser, so the payload, password, and recovered plaintext remain on your device.

What payload format does it expect?

It expects a JSON object containing the AES-GCM metadata required for decryption, including the ciphertext, salt, IV, algorithm details, and key-derivation settings.

Why does decryption fail even though the JSON looks correct?

The most common reasons are an incorrect password, a truncated payload, or modified ciphertext, salt, or IV values. AES-GCM also detects tampering, so altered payloads will fail to decrypt.

Can I decrypt any AES-encrypted blob with this tool?

No. It is designed for compatible AES-GCM JSON payloads using the same PBKDF2-based format expected by the tool.

Can I use this for files?

This version is intended for text payloads. File decryption requires a separate file-oriented workflow that handles binary data and download reconstruction.

AES Decrypt

Decrypt compatible AES-GCM JSON payloads locally with the original password and recover plaintext entirely in your browser. Perfect for secret recovery checks, browser-side decryption testing, and payload verification.

aes

decryption

crypto

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Quick Presets

A sample payload you can decrypt locally with the matching password

AES-GCM Input & Settings

Decrypt a compatible AES-GCM payload back into plaintext.

AES Payload

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Password

How it works: This tool derives a 256-bit AES-GCM key from your password using PBKDF2 with SHA-256, a random salt, and 250,000 iterations. Encryption output is stored as JSON containing the algorithm, salt, IV, and ciphertext so you can decrypt it later with the same password.

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