Adaptively Secure Forward-Secure Non-interactive Threshold Cryptosystems -- Cryptanalysis vs. Provable Security -- Boosting Scalability in Anomaly-Based Packed Executable Filtering -- Searching Short Recurrences of Nonlinear Shift Registers via Directed Acyclic Graphs -- Differential and Linear Cryptanalysis Using Mixed-Integer Linear Programming -- Adleman-Manders-Miller Root Extraction Method Revisited -- Multi-pixel Encryption Visual Cryptography -- An Improved Electronic Voting Scheme without a Trusted Random Number Generator -- Fault Attacks against the Miller Algorithm in Hessian Coordinates -- Benchmarking for Steganography by Kernel Fisher Discriminant Criterion -- Improved Tradeoff between Encapsulation and Decapsulation of HK09 -- Non-interactive Deniable Authentication Protocols -- On the Probability Distribution of the Carry Cells of Stream Ciphers F-FCSR-H v2 and F-FCSR-H v3 -- Efficient Self-certified Signatures with Batch Verification -- A Generic Construction from Selective-IBE to Public-Key Encryption with Non-interactive Opening -- Fast Tate Pairing Computation on Twisted Jacobi Intersections Curves -- Weak-Key Class of MISTY1 for Related-Key Differential Attack -- Cryptanalysis of Reduced-Round KLEIN Block Cipher -- An Efficient RSA Implementation without Precomputation -- The Stream Cipher Core of the 3GPP Encryption Standard 128-EEA3: Timing Attacks and Countermeasures -- Batching Multiple Protocols to Improve Efficiency of Multi-Party Computation -- Towards Attack Resilient Social Network Based Threshold Signing -- A Ciphertext Policy Attribute-Based Encryption Scheme without Pairings -- Cryptanalysis of Randomized Arithmetic Codes Based on Markov Model.

This book constitutes the thoroughly refereed post-conference proceedings of the 7th International Conference on Information Security and Cryptology, Inscrypt 2011, held in Beijing, China, in November/December 2011. The 24 revised full papers presented together with 2 invited talks were carefully reviewed and selected from 80 submissions. The papers present research advances in the areas of information security, cryptology, and their applications.