Advances in Cryptology – EUROCRYPT '98

Securing threshold cryptosystems against chosen ciphertext attack.- Auto-recoverable auto-certifiable cryptosystems.- A practical and provably secure scheme for publicly verifiable secret sharing and its applications.- Equivalence of counting the number of points on elliptic curve over the ring Zn and factoring n.- Breaking RSA may not be equivalent to factoring.- Lower bounds on generic algorithms in groups.- Improved cryptanalysis of RC5.- Cryptanalysis of the ANSI X9.52 CBCM mode.- Differential-linear weak key classes of IDEA.- Divertible protocols and atomic proxy cryptography.- Optimum traitor tracing and asymmetric schemes.- On finding small solutions of modular multivariate polynomial equations.- Computing discrete logarithms with quadratic number rings.- Improved algorithms for isomorphisms of polynomials.- Visual cryptanalysis.- How to improve an exponentiation black-box.- Speeding up discrete log and factoring based schemes via precomputations.- Fast batch verification for modular exponentiation and digital signatures.- A formal treatment of remotely keyed encryption.- Luby-Rackoff backwards: Increasing security by making block ciphers non-invertible.- The chain & sum primitive and its applications to MACs and stream ciphers.- A cryptosystem based on non-maximal imaginary quadratic orders with fast decryption.- A new public-key cryptosystem as secure as factoring.- Towards a better understanding of one-wayness: Facing linear permutations.- Finding collisions on a one-way street: Can secure hash functions be based on general assumptions?.- Secure communication in minimal connectivity models.- On the foundations of oblivious transfer.- Quorum-based secure multi-party computation.- Strengthened security for blind signatures.- Generic constructions for secure and efficient confirmer signature schemes.- Security analysis of a practical “on the fly” authentication and signature generation.- Universally verifiable mix-net with verification work independent of the number of mix-servers.- A practical mix.- On the propagation criterion of degree l and order k.- Highly nonlinear balanced Boolean functions with a good correlation-immunity.- Heuristic design of cryptographically strong balanced Boolean functions.- Secret sharing schemes with bipartite access structure.- Combinatorial bounds for broadcast encryption.- New results on multi-receiver authentication codes.- Specialized integer factorization.- Security of an identity-based cryptosystem and the related reductions.- Easy come — Easy go divisible cash.- Secure and efficient metering.- Optimistic fair exchange of digital signatures.