Computer Science ›› 2017, Vol. 44 ›› Issue (8): 146-150.doi: 10.11896/j.issn.1002-137X.2017.08.026

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Design and Characteristic Study on Fast Stream Cipher Algorithm Based on Camellia

DING Jie, SHI Hui, GONG Jing and DENG Yuan-qing   

  • Online:2018-11-13 Published:2018-11-13

Abstract: As the encryption standard of the block cipher of NESSIE,Camellia algorithm has the same security and applicability as AES algorithm.In this paper,a novel fast stream cipher algorithm was proposed based on Camellia algorithm.The idea is to extract parts of the internal state at certain round function F and give them as the output keystream.We analyzed the relative characteristics of the new algorithm.The result shows that the new algorithm achieves almost the same performance as the optimal performance obtained in LEX,in terms of keystream generation speed and randomness.Besides,it can resist slide attack,with both input and key changing in each Camellia module.

Key words: Stream cipher,Camellia,Randomness,Security,Fast

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