Encrypt sensitive text or decrypt encrypted messages using AES, DES, TripleDES, and other algorithms. Useful for testing encryption, securing API communications, or learning how encryption works. All encryption happens locally in your browser - your data never leaves your computer.
It's straightforward:
Encryption is like putting your message in a safe - you scramble your text using a secret key, and only someone with that same key can unscramble it back to readable text. It's the foundation of modern internet security, protecting everything from your WhatsApp messages to your online banking. This tool lets you experiment with different encryption algorithms to see how they work, test your own encryption implementations, or encrypt sensitive data before storing it.
Encryption is reversible - you encrypt something and can decrypt it back to the original with the right key. Hashing is one-way - you can create a hash from data, but you can't get the original data back from the hash. Use encryption when you need to retrieve the original data later. Use hashing when you just need to verify data integrity or store passwords securely.
For most purposes, go with AES. It's the industry standard, battle-tested, and used everywhere from your WiFi router to cloud storage services. DES and RC4 are outdated and have known vulnerabilities - only use them if you're working with legacy systems that require them.
Yes - everything happens right in your browser. Your text never gets sent to any server, so even we can't see what you're encrypting. It's completely private and secure. That said, remember that encryption is only as secure as your key - use a strong, random key and keep it secret.
This tool is great for testing, learning, and development work. For production applications handling real sensitive data, you should use well-tested cryptographic libraries in your programming language of choice, follow security best practices, and consider getting a security audit. This tool helps you understand how encryption works, but production systems need more robust implementations.
ECB (Electronic Codebook) encrypts each block independently, which can leak patterns in your data. CBC (Cipher Block Chaining) uses the previous block's ciphertext to encrypt the next block, making it more secure. For most purposes, choose CBC - it's more secure and widely used. ECB is mainly useful for specific use cases or compatibility with older systems.