Decrypt Tool

Decrypt encrypted text online using AES, DES, or Caesar cipher algorithms with this free tool.

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About This Tool

This online decrypt tool allows you to decrypt encrypted text using three popular algorithms: AES (Advanced Encryption Standard), DES (Data Encryption Standard), and Caesar cipher. Simply paste your encrypted text, enter the decryption key, select the algorithm, and get the decrypted result instantly. The tool supports symmetric key decryption where the same key used for encryption is required for decryption. For Caesar cipher, the key is a numerical shift value. All processing happens client-side in your browser for privacy and speed.

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How to Use

Paste your encrypted text into the 'Encrypted Text' textarea.
Enter the decryption key in the 'Decryption Key' field (for AES/DES, this is the secret key; for Caesar cipher, enter a number).
Select the decryption algorithm from the dropdown (AES, DES, or Caesar cipher).
Click the 'Decrypt' button to process.
View the decrypted result in the output section below.

Frequently Asked Questions

Find Quick Answers

What encryption algorithms does this tool support?

This tool supports decryption for AES (Advanced Encryption Standard), DES (Data Encryption Standard), and Caesar cipher algorithms.

Do I need to install anything to use this tool?

No, this is a completely web-based tool that runs in your browser. No software installation or registration is required.

Is my data secure when using this decrypt tool?

Yes, all decryption happens locally in your browser. Your encrypted text and key are never sent to any server, ensuring complete privacy.

What format should the decryption key be in?

For AES and DES, enter the secret key as a string. For Caesar cipher, enter a number (like 3, 7, etc.) representing the shift value used during encryption.

Can I decrypt files with this tool?

Currently, this tool only supports text decryption. For file decryption, you would need to extract the encrypted text from the file first.

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