Showing papers on "Cryptographic protocol published in 1979"
TL;DR: Key management, network encryption protocols, digital signatures, and the utility of conventional or public-key encryptlon methods are each discussed.
Abstract: There is increasing growth in the number of computer networks in use and in the kinds of distributed computing applications available on these networks This increase, together with concern about privacy, security, and integrity of information exchange, has created considerable interest in the use of encryptlon to protect information in the networks This survey is directed at the reader who ts knowledgeable about varmus network designs and who now wishes to consider incorporating encryption methods into these designs. It is also directed at developers of encryption algorithms who wish to understand the characteristics of such algorithms useful in network applications. Key management, network encryption protocols, digital signatures, and the utility of conventionalor public-key encryptlon methods are each discussed. A case study of how encryption was integrated into an actual network, the Arpanet, illustrates many issues present m the design of a network encryption facdity.
162 citations
Patent•
23 Feb 1979
TL;DR: Signature verification and authentication systems are discussed in this paper, which include documents each of which bears a cryptographic representation of at least one property of a signature of an authorized user thereof modified in accordance with a set of indicia identifying the document with its authorized user.
Abstract: Signature verification and authentication systems are disclosed which include documents each of which bears a cryptographic representation of at least one property of a signature of an authorized user thereof modified in accordance with at least one of a set of indicia identifying the document with its authorized user. Apparatus are disclosed whereby said cryptographic representations can be decrypted and authenticated, using said indicia as a key. Apparatus are disclosed for producing such cryptographic representations on documents, which apparatus include cryptographic means for producing cryptographic representations of signatures and means for modifying the operation of these cryptographic means in accordance with one or more of said indicia. Methods of signature verification and authentication using documents bearing such cryptographic representations are disclosed. Both passive systems (48, figure 2) in which the decrypting of said cryptographic representations is performed by eye with the help of passive optical elements (50. figure 2), and active systems (210, figure 14) in which electronic means are used for the decrypting of said cryptographic representations are disclosed.
35 citations
TL;DR: The nature of cryptographic transformation and its application to the protection of data contained in files use by computer-based information systems are explored and the significance of such transformations for information systems is discussed.
Abstract: This article explores the nature of cryptographic transformation and its application to the protection of data contained in files use by computer-based information systems. It presents some of the basic concepts of cryptography and structures of taxonomy of cryptographic transformations. The implications of computer oriented implementations of cryptographic protection are explored and the significance of such transformations for information systems is discussed.
2 citations