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Using encryption for authentication in large networks of computers

By Roger M. Needham, Michael D. Schroeder
Communications of the ACM, December 1978, Vol. 21 No. 12, Pages 993-999
10.1145/359657.359659
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Use of encryption to achieve authenticated communication in computer networks is discussed. Example protocols are presented for the establishment of authenticated connections, for the management of authenticated mail, and for signature verification and document integrity guarantee. Both conventional and public-key encryption algorithms are considered as the basis for protocols.

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