Analysis and Improvements of the Full Spritz Stream Cipher

• Main Authors: Banik, Subhadeep, Isobe, Takanori, Morii, Masakatu
• Other Authors: Temasek Laboratories
• Format: Article
• Language: English
• Published: 2017
• Subjects: RC4; Spritz
• Online Access: https://hdl.handle.net/10356/81487; http://hdl.handle.net/10220/43486
• Institution: Nanyang Technological University

Spritz is a stream cipher proposed by Rivest and Schuldt at the rump session of CRYPTO 2014. It is intended to be a replacement of the popular RC4 stream cipher. In this paper we propose distinguishing attacks on the full Spritz, based on a short-term bias in the first two bytes of a keystream and a...