Cryptology ePrint Archive: Report 2005/375

Truncated differential cryptanalysis of five rounds of Salsa20

Paul Crowley

Abstract: We present an attack on Salsa20 reduced to five of its twenty rounds. This attack uses many clusters of truncated differentials and requires 2^{165} work and 2^{6} plaintexts.

Category / Keywords: secret-key cryptography / cryptanalysis, truncated differential cryptanalysis, salsa20

Date: received 18 Oct 2005

Contact author: paul at ciphergoth org

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Version: 20051023:204644 (All versions of this report)

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