This book constitutes the refereed proceedings of the 8th International Conference on Cryptology in India, INDOCRYPT 2007, held in Chennai, India, in December 2007.

The 22 revised full papers and 11 revised short papers presented together with 3 invited lectures were carefully reviewed and selected from 104 submissions. The papers are organized in topical sections on hashing, elliptic curve, cryptoanalysis, information theoretic security, elliptic curve cryptography, signature, side channel attack, symmetric cryptosystem, asymmetric cryptosystem, and short papers.

This book constitutes the refereed proceedings of the Second International Conference in Cryptology in India, INDOCRYPT 2001, held in Chennai, India in December 2001. The 31 revised full papers presented together with an invited survey were carefully reviewed and selected from 77 submissions. The papers are organized in topical sections on hashing, algebraic schemes, elliptic curves, coding theory, applications, cryptanalysis, distributed cryptography, Boolean functions, digitial signatures, and shift registers.

th This volume contains the proceedings of the 10 ISAAC conference (Tenth - nual International Symposium on Algorithms And Computation) held in Ch- nai, India. This year's conference attracted 71 submissions from as many as 17 di erent countries. Each submission was reviewed by at least three independent referees. After a week-long e-mail discussion, the program committee agreed to include 40 papers in the conference program. The high acceptance rate is clearly an indication of the quality of the papers received. We thank the program c- mittee members and the reviewers for their sincere e orts. We were fortunate to have three invited speakers this year, providing for a very attractive program: Kurt Mehlhorn (MPI, Saarbruck .. en, Germany), Eva T- dos (Cornell University, U.S.A.), and Kokichi Sugihara (Univ. of Tokyo, Japan). Moreover, the conference was preceded by a tutorial on a cutting-edge area, Web Algorithmics by Monika Henzinger (Compaq Systems Research Center, Palo Alto, U.S.A.) as a joint event with FST&TCS 99 (Foundations of Software Te- nology and Theoretical Computer Science, December 13-15, 1999, Chennai).Asa post conference event, a two-day workshop on Approximate Algorithms by R. Ravi (CMU, U.S.A.) and Naveen Garg (IIT, Delhi) was organized. We thank all the in- ted speakers and special event speakers for agreeing to participate in ISAAC'99.

th This volume contains the proceedings of the 19 FST&TCS conference (Foundations of Software Technology and Theoretical Computer Science), - ganized under the auspices of the Indian Association for Research in Computing Science (http: //www. imsc. ernet. in/ iarcs). This year s conference attracted 84 submissions from as many as 25 dieren t countries. Each submission was reviewed by at least three independent referees. th After a week-long e-mail discussion, the program committee met on the 7 th and 8 of August, 1999, in Chennai and selected 30 papers for inclusion in the conference program. We thank the program committee members and the reviewers for their sincere eorts. We are fortunate to have ve invited speakers this year, providing for a very attractive program: Mart n Abadi (Bell Labs - Lucent Technologies, Palo Alto, USA), Lila Kari (Univ. Western Ontario, Canada), Jean-Jacques L evy (INRIA, Paris, France), Micha Sharir, (Univ. TelAviv, Israel), andSeinosuke Toda (IEC, Tokyo, Japan). Moreover, theconferenceisprecededbyatwo-dayworkshop(- cember 11{12, 1999) on Data Structures and succeeded by a two-day workshop (December 16-17, 1999) on Foundations of Mobile Computation. The conference also features two joint sessions with the International Symposium on - tomata, Algorithms and Computation (December 16{18, 1999, Chennai): Monika Henzinger (Compaq Systems Research, Palo Alto, USA) is presenting a tutorial on Web algorithmics as the last event of FST&TCS and Kurt Mehlhorn (Max-Planck-Institut, Saarbru ]cken, Germany) is giving a talk on algorithm - gineering as the rst event of ISAAC."