Collection of classic symmetric encryption algorithms like AES, DES, ChaCha20, SM4. Uses the same key for encryption/decryption, fast and suitable for large data.

Who is this collection for?

• Use this page when you want to compare several related tools in one place.
• It helps you move between closely related tasks without searching again.
• This collection currently includes 19 practical tools.

What can you find here?

• Common entry points include AES Online Encryptor/Decryptor, Rijndael Online Encryption/Decryption, DES/3DES Encryption/Decryption, Blowfish Encryption/Decryption, Camellia Encryption/Decryption, and 14 more tools.
• You can quickly switch between checking, conversion, generation, formatting, or supporting workflows.

Recommended entry points

• AES Online Encryptor/Decryptor - AES Online Encryption/Decryption tool, supports CBC/ECB/CTR/CFB/OFB modes, 128/192/256-bit keys
• Rijndael Online Encryption/Decryption - Original AES algorithm supporting variable block sizes and key lengths of 128/192/256 bits, providing more flexible encryption options
• DES/3DES Encryption/Decryption - Classic symmetric encryption tool supporting text and file processing
• Blowfish Encryption/Decryption - Online Blowfish encryption/decryption tool supporting variable key lengths (32-448 bits) and CBC/ECB/CFB/OFB modes.
• Camellia Encryption/Decryption - Internationally recognized secure encryption algorithm supporting 128/192/256-bit keys
• SEED Encryption/Decryption - Online SEED encryption/decryption tool, Korean standard 128-bit block cipher, supporting CBC, ECB, CFB, OFB modes.
• Twofish Encryption/Decryption - AES finalist algorithm, high-security symmetric encryption tool designed by Bruce Schneier
• CAST5 (CAST-128) Encryption/Decryption - Secure encryption tool based on CAST5 (CAST-128) algorithm. Supports CBC, ECB, CFB, OFB modes for fast and secure data protection.
• IDEA Encryption/Decryption - Online IDEA (International Data Encryption Algorithm) encryption/decryption tool with 128-bit fixed key, supporting CBC, ECB, CFB, OFB, RAW modes.
• TEA/XTEA/XXTEA Online Encryption/Decryption - Online TEA/XTEA/XXTEA encryption/decryption tool, supporting CBC/ECB/CFB/OFB modes, widely used in embedded systems and game development
• Serpent Online Encryption/Decryption - AES finalist algorithm - Ultra-secure block cipher supporting 128/192/256-bit keys
• LOKI97 Online Encryption/Decryption - Australian Block Cipher - 128-bit block, variable key length AES candidate algorithm
• RC Series (RC2/RC4/RC5/RC6) Online Encryption/Decryption - RC series symmetric encryption algorithms designed by Ron Rivest, supporting RC2, RC4, RC4-Drop, RC5 and RC6
• GOST Online Encryption/Decryption - GOST 28147-89 and Magma (GOST R 34.12-2015) encryption/decryption tool supporting multiple modes and S-Box options
• Salsa20 Online Encryption/Decryption - High-speed stream cipher encryption/decryption tool supporting Salsa20, Salsa20/12, Salsa20/8 and XSalsa20 variants
• ChaCha20 Online Encryption/Decryption - ChaCha20, ChaCha20-Poly1305 and XChaCha20 encryption/decryption tool. Supports AEAD authenticated encryption, multiple input/output formats. Secure and fast, runs entirely in browser.
• SM4 Block Cipher Algorithm - Chinese commercial cryptography standard SM4 algorithm, 128-bit block symmetric encryption, supporting CBC/ECB/CTR modes with automatic key and IV generation
• Caesar Cipher Encrypt/Decrypt - Classic Caesar cipher (shift) encrypt/decrypt tool with custom shift and one-click copy
• ROT13 Encrypt/Decrypt - Online ROT13 encryption/decryption tool supporting ROT13, ROT5, ROT18, ROT47 variants with one-click conversion

How to use this page

1. Read the short introduction and identify the tool closest to your current goal.
2. Open the selected tool and process your data directly in the browser.
3. Return to this collection when the workflow needs another related tool.

FAQ

Do I need to use every tool in this collection?

No. Pick the tool that matches your current task.

Why are these tools grouped together?

Because they are often used in the same workflow or solve closely related problems.