Symmetric Encrypt & Decrypt
Algorithm
Key
Symmetric encryption is a type of encryption where the same key is used to both encrypt and decrypt information. It is also called single key encryption or secret key encryption. Symmetric encryption is fast and efficient, but it requires a secure way to share the key between the sender and the receiver. Some examples of symmetric encryption algorithms are AES, DES, RC4. Symmetric encryption is widely used for data protection, authentication and digital signatures.
Related Tools
SM4 Cipher
SM4 is a 128-bit block cipher, currently established as a national standard (GB/T 32907-2016) of China. Multiple block cipher modes are supported. It complete implementation of SM4 cipher encryption/decryption with ECB, CBC, CFB, OFB, CTR block modes.
Random Password Generator
Random Password Generator can create random passwords of a specified length online. By setting whether the password includes lowercase letters (a-z), uppercase letters (A-Z), digits (0-9), and special characters, it can randomly generate passwords between 4 and 32 characters in length.
Zero-Width Characters Cipher
Encode & decode secret messages using invisible Unicode characters (ZWSP, ZWNJ, ZWJ). Perfect for CTF, steganography, or covert communication. No install, copy-paste ready.