Text Encryption & Decryption
Encrypt and decrypt text data using various algorithms
Encryption Settings
Input Text
Output Result
About Encryption & Decryption Tool
Encryption Algorithms Explained
Encryption is a key technology for data security, converting plaintext into unreadable ciphertext through specific algorithms.
This tool supports multiple encryption algorithms, each with specific use cases:
- AES (Advanced Encryption Standard) - The most commonly used symmetric encryption algorithm, secure and efficient
- DES/3DES - Classic encryption algorithms, with 3DES providing higher security
- Rabbit - High-speed stream cipher algorithm suitable for scenarios requiring fast processing
- RC4 - Simple stream cipher algorithm, easy to implement but with known security issues
Frequently Asked Questions
What's the difference between AES-CBC and AES-CFB?
AES-CBC (Cipher Block Chaining) and AES-CFB (Cipher Feedback) are two operation modes of the AES algorithm. CBC is more commonly used, while CFB allows block ciphers to be converted into stream ciphers. Both require an initialization vector (IV), but have different error propagation characteristics.
Why do some algorithms require an IV (Initialization Vector)?
An initialization vector (IV) is used to increase the randomness of ciphertext, ensuring that even when encrypting the same plaintext with the same key, the generated ciphertext will be different each time. This greatly improves encryption security by preventing pattern recognition attacks.
How do I choose the right encryption algorithm?
When choosing an encryption algorithm, consider security requirements, performance needs, and compatibility. Generally, AES is the best choice as it provides a good balance of security and performance. For specific needs, other algorithms may be considered.
Can encrypted data be 100% guaranteed secure?
No encryption system is 100% secure. The security of encryption depends on algorithm strength, key management, implementation quality, and overall system security. Keeping your keys secure is the most important aspect.
Usage Tips
For the best encryption and decryption results, consider the following suggestions:
- Use Strong Keys - Choose keys with sufficient length and complexity, avoiding easily guessable information
- Algorithm Selection - Use more secure encryption methods like AES-CBC or AES-CFB for sensitive data
- Save Parameters - Securely record your keys and IVs, as encrypted data cannot be recovered once they're lost
- Regular Rotation - Regularly change encryption keys to improve long-term system security