| 2004 | VMPC One-Way Function and Stream Cipher. | Bartosz Zoltak |
| 2004 | A New Stream Cipher HC-256. | Hongjun Wu |
| 2004 | A MAC Forgery Attack on SOBER-128. | Dai Watanabe, Soichi Furuya |
| 2004 | Towards a Unifying View of Block Cipher Cryptanalysis. | David A. Wagner |
| 2004 | Results on Rotation Symmetric Bent and Correlation Immune Boolean Functions. | Pantelimon Stanica, Subhamoy Maitra, John A. Clark |
| 2004 | ICEBERG : An Involutional Cipher Efficient for Block Encryption in Reconfigurable Hardware. | Franois-Xavier Standaert, Gilles Piret, Gal Rouvroy, Jean-Jacques Quisquater, Jean-Didier Legat |
| 2004 | Improving Immunity of Feistel Ciphers against Differential Cryptanalysis by Using Multiple MDS Matrices. | Taizo Shirai, Kyoji Shibutani |
| 2004 | Cryptographic Hash-Function Basics: Definitions, Implications, and Separations for Preimage Resistance, Second-Preimage Resistance, and Collision Resistance. | Phillip Rogaway, Thomas Shrimpton |
| 2004 | Nonce-Based Symmetric Encryption. | Phillip Rogaway |
| 2004 | A New Weakness in the RC4 Keystream Generator and an Approach to Improve the Security of the Cipher. | Souradyuti Paul, Bart Preneel |
| 2004 | Differential Attacks against the Helix Stream Cipher. | Frdric Muller |
| 2004 | Improved Linear Consistency Attack on Irregular Clocked Keystream Generators. | Hvard Molland |
| 2004 | On Linear Approximation of Modulo Sum. | Alexander Maximov |
| 2004 | Minimum Distance between Bent and 1-Resilient Boolean Functions. | Soumen Maity, Subhamoy Maitra |
| 2004 | Ciphers Secure against Related-Key Attacks. | Stefan Lucks |
| 2004 | On the Additive Differential Probability of Exclusive-Or. | Helger Lipmaa, Johan Walln, Philippe Dumas |
| 2004 | Algebraic Attacks on Summation Generators. | Dong Hoon Lee, Jaeheon Kim, Jin Hong, Jae Woo Han, Dukjae Moon |
| 2004 | CWC: A High-Performance Conventional Authenticated Encryption Mode. | Tadayoshi Kohno, John Viega, Doug Whiting |
| 2004 | Related Key Differential Attacks on 27 Rounds of XTEA and Full-Round GOST. | Youngdai Ko, Seokhie Hong, Wonil Lee, Sangjin Lee, Ju-Sung Kang |
| 2004 | New Cryptographic Primitives Based on Multiword T-Functions. | Alexander Klimov, Adi Shamir |
| 2004 | New Security Proofs for the 3GPP Confidentiality and Integrity Algorithms. | Tetsu Iwata, Tadayoshi Kohno |
| 2004 | Vulnerability of Nonlinear Filter Generators Based on Linear Finite State Machines. | Jin Hong, Dong Hoon Lee, Seongtaek Chee, Palash Sarkar |
| 2004 | A Weakness of the Linear Part of Stream Cipher MUGI. | Jovan Dj. Golic |
| 2004 | Correlation Attacks Using a New Class of Weak Feedback Polynomials. | Hkan Englund, Martin Hell, Thomas Johansson |
| 2004 | Fast Software-Based Attacks on SecurID. | Scott Contini, Yiqun Lisa Yin |