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AES Decryptor

Decrypt AES-encrypted ciphertext back to plaintext securely client-side.

Secure AES Decryption Online

Decrypt data that was encrypted using the AES GCM or CBC algorithms. This tool requires the encrypted ciphertext, the secret passphrase, and the Initialization Vector (IV) used during encryption. Everything runs entirely in your browser.

Ready to decrypt.

Why is the IV required?

An **Initialization Vector (IV)** is a random value combined with the secret key to ensure that encrypting the same text twice will produce completely different ciphertexts. Decryption will fail, or produce scrambled data, if the exact correct IV is not provided.

How to use the decryptor

  1. Paste the encrypted ciphertext in the ciphertext field.
  2. Enter the secret passphrase.
  3. Enter the Initialization Vector (IV) in hexadecimal format.
  4. Configure the mode (GCM/CBC) and input format (Base64/Hex) to match the encryption settings.
  5. Click Decrypt Ciphertext to view the plain text.

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