EUROCODE '90

Concatenated spherical codes codes sphériques concaténés.- A note on automorphism groups of codes and symbol error probability computation.- A direct proof for the automorphism group of reed solomon codes.- A family of binary codes with asymptotically good distance distribution.- A transformation on boolean functions, its consequences on some problems related to reed-muller codes.- Covering radius of RM(1,9) in RM(3,9).- The weights of the duals of binary bch codes of designed distance ?=9.- The minimum distance of some binary codes via the newton's identities.- Minimum-change binary block-codes which are well balanced.- Construction of unequal error protection codes.- Unidirectional error detecting codes.- Coherent partitions and codes.- $$frac{1}{lambda }$$ -regular and $$frac{1}{lambda }$$ -homogeneous tournaments.- Decoding of codes on hyperelliptic curves.- Decoding of codes on the klein quartic.- Asymptotically good families of geometric goppa codes and the gilbert-varshamov bound.- Multiplicative character sums and non linear geometric codes.- A survey of identification schemes.- A correlation cryptographic scheme.- Pseudorandom permutations based on the D.E.S. scheme.- Linear complexity of transformed sequences.- Some remarks on a LFSR "disturbed" by other sequences.- Parameters for complex FFTs in finite residue class rings.- A cryptographic tool for programs protection.- Decoding techniques for convolutional codes.- A weighted-output variant of the viterbi algorithm for concatenated schemes using a convolutional inner code / Une Variante À Sortie Pondérée De L'Algorithme De Viterbi Pour Des Schémas Concaténés À Code Intérieur Convolutif.- Coded modulation with convolutional codes over rings.- A shannon-theoretic coding theorem in authentication theory.- Joint fractional entropy.- On the adaptive source coding / Sur Le Codage De Source Adaptatif.- Minimum codeword length and redundancy of Huffman codes.- Binary covering codes and high speed data