Key Management and Key Exchange -- Generic One Round Group Key Exchange in the Standard Model -- Modeling Leakage of Ephemeral Secrets in Tripartite/Group Key Exchange -- Efficient Certificateless KEM in the Standard Model -- Public Key Cryptography -- Accelerating Twisted Ate Pairing with Frobenius Map, Small Scalar Multiplication, and Multi-pairing -- Factoring Unbalanced Moduli with Known Bits -- Algebraic Cryptanalysis and Stream Cipher -- Algebraic Cryptanalysis of SMS4: Gröbner Basis Attack and SAT Attack Compared -- MXL3: An Efficient Algorithm for Computing Gröbner Bases of Zero-Dimensional Ideals -- Improved Linear Cryptanalysis of SOSEMANUK -- Security Management and Efficient Implementation -- Serial Model for Attack Tree Computations -- Lightweight Cryptography and RFID: Tackling the Hidden Overheads -- Side Channel Attack -- Power Analysis of Single-Rail Storage Elements as Used in MDPL -- A Timing Attack against Patterson Algorithm in the McEliece PKC -- Side-Channel Analysis of Cryptographic Software via Early-Terminating Multiplications -- Privacy Enhanced Technology -- First CPIR Protocol with Data-Dependent Computation -- Efficient Fuzzy Matching and Intersection on Private Datasets -- Efficient Privacy-Preserving Face Recognition -- Cryptographic Protocol -- Linear, Constant-Rounds Bit-Decomposition -- Attacking and Repairing the Improved ModOnions Protocol -- Secret Handshakes with Revocation Support -- Cryptanalysis of Hash Function -- Practical Rebound Attack on 12-Round Cheetah-256 -- Preimage Attacks on Reduced Steps of ARIRANG and PKC98-Hash -- Improved Preimage Attack for 68-Step HAS-160 -- Distinguishing Attack on Secret Prefix MAC Instantiated with Reduced SHA-1 -- Network Security -- Cryptanalysis of a Message Recognition Protocol by Mashatan and Stinson -- Analysis of the Propagation Pattern of a Worm with Random Scanning Strategy Based on Usage Rate of Network Bandwidth.

This book constitutes the proceedings of the 12th International Conference on Information Security and Cryptology, held in Seoul, Korea, in December 2009.