## Entity Authentication and Key Distribution (1993)

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Citations: | 498 - 12 self |

### BibTeX

@MISC{Bellare93entityauthentication,

author = {Mihir Bellare and Phillip Rogaway},

title = { Entity Authentication and Key Distribution},

year = {1993}

}

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### Abstract

Entity authentication and key distribution are central cryptographic problems in distributed computing -- but up until now, they have lacked even a meaningful definition. One consequence is that incorrect and inefficient protocols have proliferated. This paper provides the first treatment of these problems in the complexity-theoretic framework of modern cryptography. Addressed in detail are two problems of the symmetric, two-party setting: mutual authentication and authenticated key exchange. For each we present a definition, protocol, and proof that the protocol meets its goal, assuming the (minimal) assumption of pseudorandom function. When this assumption is appropriately instantiated, the protocols given are practical and efficient.