A Simple Related-Key Attack on the Full SHACAL-1

  title={A Simple Related-Key Attack on the Full SHACAL-1},
  author={Eli Biham and Orr Dunkelman and Nathan Keller},
SHACAL-1 is a 160-bit block cipher with variable key length of up to 512-bit key based on the hash function SHA-1. It was submitted to the NESSIE project and was accepted as a finalist for the 2nd phase of evaluation. Since its introduction, SHACAL-1 withstood extensive cryptanalytic efforts. The best known key recovery attack on the full cipher up to this paper has a time complexity of about 2 encryptions. In this paper we use an observation due to Saarinen to present an elegant related-key… CONTINUE READING


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