Salsa20 and ChaCha20
Salsa20 (formerly known as Snuffle 2005) and the closely related ChaCha are stream ciphers developed by Daniel J. Bernstein. Salsa20, the original cipher, was designed in 2005, then later submitted to the eSTREAM European Union cryptographic validation process by Bernstein. ChaCha is a modification of Salsa20 published in 2008. It uses a new round function that increases diffusion and increases performance on some architectures.
Key facts
- Encryption method.name
- ChaCha
- Encryption method.image
- 250px
- Encryption method.caption
- The ChaCha quarter-round function. Four parallel copies make a round.
- Encryption method.designers
- Daniel J. Bernstein
- Encryption method.publish date
- 2008
- Encryption method.derived from
- Salsa20
- Encryption method.derived to
- ChaCha
- Encryption method.related to
- Rumba20
- Encryption method.certification
- eSTREAM portfolio
- Encryption method.key size
- 128 or 256 bits
- Encryption method.state size
- 512 bits
- Encryption method.structure
- ARX