ChaCha20 Encryption Tool

Encrypt your data using the ChaCha20 stream cipher with password-based key derivation (PBKDF2-SHA256).

Need to decrypt data?

Encryption Settings

Encrypted Output

Encrypted output will appear here

Note about Password Security:

  • The password is not included in the output for security reasons
  • Keep your password safe and separate from the encrypted data
  • You'll need the same password to decrypt this data later
  • If you lose the password, the data cannot be recovered

About Encryption Name:

  • The encryption name is optional and only used for identification
  • It does not affect the encryption or decryption process
  • If no name is provided, it will be saved as "Unnamed Encryption"
  • You can use it to organize and identify different encrypted files

About ChaCha20 Encryption

What is ChaCha20?

ChaCha20 is a modern, high-speed stream cipher designed by Daniel J. Bernstein. It is widely used in secure communications, including TLS, SSH, and VPNs.

Technical Specifications:

  • Type: Stream cipher
  • Key size: 256 bits
  • Nonce size: 96 bits (12 bytes)
  • Block size: 64 bytes (512 bits)
  • Designed by: Daniel J. Bernstein

Why Use ChaCha20?

ChaCha20 is designed to be secure, fast, and simple. It is immune to timing attacks, highly efficient on all platforms, and recommended by many security experts as an alternative to AES.

Key Benefits:

  • High performance on all hardware
  • Resistant to timing attacks
  • Simple and robust design
  • Widely adopted in modern protocols

Security Considerations

⚠️ Security Notes:

Always use a unique nonce for each encryption with the same key. Never reuse a nonce/key pair.

  • Never reuse a nonce with the same key
  • Use a secure password and random salt
  • Store all parameters needed for decryption

This tool is provided for secure, modern encryption and for educational purposes.

How ChaCha20 Works

ChaCha20 generates a keystream from a secret key and nonce, which is XORed with the plaintext to produce ciphertext. Decryption is the same operation.

Encryption Process:

  • Derive a 256-bit key from password using PBKDF2-SHA256
  • Generate a random 96-bit nonce
  • Encrypt plaintext using ChaCha20(key, nonce, plaintext)
  • Output ciphertext, salt, nonce, and parameters as JSON