| 1991 | Optima Perfect Randomizers. | Josef Pieprzyk, Babak Sadeghiyan |
| 1991 | An Extensin of Zero-Knowledge Proofs and Its Applications. | Tatsuaki Okamoto |
| 1991 | A Digital Multisignature Scheme Based on the Fiat-Shamir Scheme. | Kazuo Ohta, Tatsuaki Okamoto |
| 1991 | On Claw Free Families. | Wakaha Ogata, Kaoru Kurosawa |
| 1991 | Results of Switching-Closure-Test on FEAL (Extended Abstract). | Hikaru Morita, Kazuo Ohta, Shoji Miyaguchi |
| 1991 | Privacy, Cryptographic Pseudonyms, and The State of Health. | Stig Fr. Mjlsnes |
| 1991 | IC-Cards and Telecommunication Services. | Jun-ichi Mizusawa |
| 1991 | A Method to Estimate the Number of Ciphertext Pairs for Differential Cryptanalysis. | Hiroshi Miyano |
| 1991 | On Ordinary Elliptic Curve Cryptosystems. | Atsuko Miyaji |
| 1991 | Extended Majority Voting and Private-Key Algebraic-Code Encryptions. | Joost Meijers, Johan van Tilburg |
| 1991 | A Generalized Secret Sharing Scheme With Cheater Detection. | Hung-Yu Lin, Lein Harn |
| 1991 | Two Efficient Server-Aided Secret Computation Protocols Based on the Addition Sequence. | Chi-Sung Laih, Sung-Ming Yen, Lein Harn |
| 1991 | Generalized Threshold Cryptosystems. | Chi-Sung Laih, Lein Harn |
| 1991 | A General Purpose Technique for Locating Key Scheduling Weakness in DES-like Cryptosystems (Extended Abstract). | Matthew Kwan, Josef Pieprzyk |
| 1991 | Simultaneous Attacks in Differential Cryptanalysis (Getting More Pairs Per Encryption). | Matthew Kwan |
| 1991 | Cryptanalysis of LOKI. | Lars R. Knudsen |
| 1991 | Revealing Information with Partial Period Correlations (Extended Abstract). | Andrew Klapper, Mark Goresky |
| 1991 | Construction of DES-like S-boxes Based on Boolean Functions Satisfyieng the SAC. | Kwangjo Kim |
| 1991 | A Known-Plaintext Attack of FEAL-4 Based on the System of Linear Equations on Difference. | Toshinobu Kaneko |
| 1991 | Cryptanalysis of Another Knapsack Cryptosystem. | Antoine Joux, Jacques Stern |
| 1991 | Any Language in IP Has a Divertable ZKIP. | Toshiya Itoh, Kouichi Sakurai, Hiroki Shizuya |
| 1991 | On the Complexity of Constant Round ZKIP of Possession of Knowledge. | Toshiya Itoh, Kouichi Sakurai |
| 1991 | On Oblivious Transfer Protocol and Its Application for the Exchange of Secrets. | Lein Harn, Hung-Yu Lin |
| 1991 | A Secure Analog Speech Scrambler Using the Discrete Cosine Transform. | Bruce Goldburg, Ed Dawson, S. Sridharan |
| 1991 | On the Power of Two-Local Random Reductions. | Lance Fortnow, Mario Szegedy |