AES Decryptor

Decrypt AES-encrypted data (CBC/GCM/ECB) using Web Crypto API. Free, private, and 100% client-side.

param.keyparam.ivModeparam.keySizeparam.outputFormat

Input

Output

Local only

Recent history

No history yet

How to use

Paste the ciphertext to decrypt.
Provide the same key and IV used for encryption.
Select the matching mode, key size, and output format.
Copy the decrypted plaintext.

Frequently asked questions

Why does decryption fail?: Ensure the key, IV, mode, key size, and output format match the encryption settings. GCM mode also verifies authenticity.
Is my data uploaded anywhere?: No. All decryption happens locally in your browser using the Web Crypto API.

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