Algorithms and Theory.- Fast Computation of Discrete Logarithms in GF (q).- Some Remarks on the Herlestam-Johannesson Algorithm for Computing Logarithms over GF(2p).- A Public-Key Cryptosystem Based on the Matrix Cover NP-Complete Problem.- Infinite Structures in Information Theory.- A Fast Modular Multiplication Algorithm with Application to Two Key Cryptography.- Comparison of Two Pseudo-Random Number Generators.- On Computationally Secure Authentication Tags Requiring Short Secret Shared Keys.- Modes of Operation.- Some Regular Properties of the ‘Data Encryption Standard’ Algorithm.- The Average Cycle Size of the Key Stream in Output Feedback Encipherment.- Analysis of Certain Aspects of Output Feedback Mode.- Drainage and the DES Summary.- Security of a Keystream Cipher with Secret Initial Value.- Using Data Uncertainty to Increase the Crypto-Complexity of Simple Private Key Enciphering Schemes.- Randomized Encryption Techniques.- Protocols and Transaction Security.- On the Security of Multi-Party Protocols in Distributed Systems.- On the Security of Ping-Pong Protocols.- The Use of Public-Key Cryptography for Signing Checks.- Blind Signatures for Untraceable Payments.- A Randomized Protocol for Signing Contracts.- On Signatures and Authentication.- Applications.- Cryptographic Protection of Personal Data Cards.- Non-Public Key Distribution.- Cryptographic Solution to a Multilevel Security Problem.- Local Network Cryptosystem Architecture: Access Control.- Implementing an Electronic Notary Public.- Quantum Cryptography, or Unforgeable Subway Tokens.- Special Session on Cryptanalysis.- A Polynomial Time Algorithm for Breaking the Basic Merkle-Hellman Cryptosystem.- A Preliminary Report on the Cryptanalysis of Merkle-Hellman Knapsack Cryptosystems.- On Breaking the Iterated Merkle-Hellman Public-Key Cryptosystem.- Rump Session: Impromptu Talks by Conference Attendees.- Long Key Variants of DES.- On the Security of Multi-Party Ping-Pong Protocols.- Inferring a Sequence Generated by a Linear Congruence.- Key Reconstruction.- Nondeterministic Cryptography.- A Short Report on the RSA Chip.