ChaCha, a variant of Salsa20. ChaCha8 is a 256-bit stream cipher based on the 8-round cipher Salsa20/8. The changes from Salsa20/8 to ChaCha8 are designed to improve diffusion per round, conjecturally increasing resistance to cryptanalysis, while preserving—and often improving—time per round. ChaCha12 and ChaCha20 are analogous modifications of the 12-round and 20-round ciphers Salsa20/12 and Salsa20/20. This paper presents the ChaCha family and explains the differences between Salsa20 and ChaCha

References in zbMATH (referenced in 14 articles , 1 standard article )

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  1. Alekseychuk, A.N.; Konyushok, S.N.: On the efficiency of the probabilistic neutral bits method in statistical cryptanalysis of synchronous stream ciphers (2016)
  2. Maitra, Subhamoy: Chosen IV cryptanalysis on reduced round ChaCha and Salsa (2016)
  3. Schneider, Tobias; Moradi, Amir; Güneysu, Tim: Arithmetic addition over Boolean masking. Towards first- and second-order resistance in hardware (2015)
  4. Aumasson, Jean-Philippe; Meier, Willi; Phan, Raphael C.-W.; Henzen, Luca: The hash function BLAKE (2014)
  5. Halevi, Shai; Shoup, Victor: Algorithms in HElib (2014)
  6. Khalid, Ayesha; Paul, Goutam; Chattopadhyay, Anupam: New speed records for Salsa20 stream cipher using an autotuning framework on GPUs (2013)
  7. Aumasson, Jean-Philippe; Guo, Jian; Knellwolf, Simon; Matusiewicz, Krystian; Meier, Willi: Differential and invertibility properties of BLAKE (2010)
  8. Vidali, Janoš; Nose, Peter; Pašalić, Enes: Collisions for variants of the BLAKE hash function (2010)
  9. Wang, Houzhen; Zhang, Huanguo: A fast pseudorandom number generator with BLAKE hash function (2010)
  10. Brier, Eric; Khazaei, Shahram; Meier, Willi; Peyrin, Thomas: Linearization framework for collision attacks: application to CubeHash and MD6 (2009)
  11. Aumasson, Jean-Philippe; Fischer, Simon; Khazaei, Shahram; Meier, Willi; Rechberger, Christian: New features of Latin dances: analysis of Salsa, ChaCha, and Rumba (2008)
  12. Fischer, Simon; Khazaei, Shahram; Meier, Willi: Chosen IV statistical analysis for key recovery attacks on stream ciphers (2008)
  13. Khazaei, Shahram; Meier, Willi: New directions in cryptanalysis of self-synchronizing stream ciphers (2008)
  14. Roy Chowdhury, Dipanwita (ed.); Rijmen, Vincent (ed.); Das, Abhijit (ed.): Progress in cryptology -- INDOCRYPT 2008. 9th international conference on cryptology in India, Kharagpur, India, December 14--17, 2008. Proceedings (2008)