PEO Revised

PEO Revised

Tuesday, September 1, 1998
Emiliano Kargieman and Ariel Futoransky
DISC 98 (Día Internacional de la Seguridad en Cómputo). DF, Mexico.

This paper focus on the security analysis of the cryptographic protocols PEO and VCR rst introduced in [1] and with important applications in information security and auditing1. The analysis is oriented to prove the security of the protocols based only on general properties of cryptographic hash functions and independently of the functions used for the implementation. Towards this goal a modification to the original protocols is proposed that would strengthen the security.

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