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AES Encrypt and Decrypt

Encrypt or decrypt text locally using AES for simple browser-side workflows.
Rating 4.5/5 | 0 comments | Free
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About Tool

Protecting sensitive text from unauthorized access requires a robust encryption standard that can be applied quickly and securely. This AES encrypt and decrypt tool utilizes the Advanced Encryption Standard (specifically AES-GCM) to transform your plaintext into an unreadable cipher and back again. By performing all operations locally in your browser, it provides a private way to handle secrets without ever exposing them to a network or third-party server.

Password-Based Security

The core of this tool is the Secret Password you provide. This password serves as the key to the encryption process. Because AES is a symmetric encryption algorithm, the same password used to lock the data must be used to unlock it. If you need a highly secure, unguessable key, you can generate one using our Password Generator before starting. It is important to note that if you lose this password, the encrypted text cannot be recovered.

How to Encrypt and Decrypt

The interface is designed for simplicity. First, select your desired Action from the dropdown: "Encrypt (Text to Cipher)" or "Decrypt (Cipher to Text)". Enter your Secret Password, and then paste your content into the Input Plaintext area. Click Encrypt (or Decrypt) to see the result. The tool generates an Encrypted Result formatted in Base64 for easy sharing. You can use Copy Result to save it or Reset to clear all fields and start fresh.

Technical Integrity and Safety

This implementation handles the complexities of AES-GCM, including the Initialization Vector (IV), automatically. This ensures that even if you encrypt the same text twice with the same password, the resulting cipher will look different, which is a vital security feature to prevent pattern recognition. For those interested in the underlying cryptographic signatures of their data, you might also find our SHA256 Generator useful for verifying that an encrypted block hasn't been altered.

Practical Scenarios

This tool is ideal for sending sensitive informationβ€”such as credentials, personal notes, or private keysβ€”over insecure channels like email or chat apps. By encrypting the text here first, you can safely send the Base64 string to a recipient who can then use the same password and this tool to read the message. It is a perfect lightweight solution for ad-hoc encryption needs where you don't want to install complex software.

Frequently Asked Questions

What is AES-GCM?

AES-GCM (Galois/Counter Mode) is a modern encryption mode that provides both confidentiality and data authenticity, ensuring the data wasn't tampered with while encrypted.

Is my password sent to your servers?

No. The encryption process happens entirely on your device using JavaScript. Your plaintext and password never leave your browser.

Why does the encrypted text change every time?

The tool uses a random "IV" for every encryption. This is a security best practice that makes the encryption much harder to crack through statistical analysis.

Can I encrypt large files here?

This tool is optimized for text. While it can handle large amounts of text, it is not designed for binary file encryption like images or videos.

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