Identity Based Multisignatures

Authors:
Raju Gangishetti;M. Choudary Gorantla;Manik Lal Das;Ashutosh Saxena
Affiliations:
Institute for Development and Research in Banking Technology, Castle Hills, Road No.1, Masab Tank, Hyderabad, India, e-mail: {graju, gmchoudary}@mtech.idrbt.ac.in, {mldas,asaxena}@idrbt.ac.in;Institute for Development and Research in Banking Technology, Castle Hills, Road No.1, Masab Tank, Hyderabad, India, e-mail: {graju, gmchoudary}@mtech.idrbt.ac.in, {mldas,asaxena}@idrbt.ac.in;Institute for Development and Research in Banking Technology, Castle Hills, Road No.1, Masab Tank, Hyderabad, India, e-mail: {graju, gmchoudary}@mtech.idrbt.ac.in, {mldas,asaxena}@idrbt.ac.in;Institute for Development and Research in Banking Technology, Castle Hills, Road No.1, Masab Tank, Hyderabad, India, e-mail: {graju, gmchoudary}@mtech.idrbt.ac.in, {mldas,asaxena}@idrbt.ac.in
Venue:
Informatica
Year:
2006

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Abstract

This paper presents identity based serial and parallel multisignature schemes using bilinear pairings. Our serial multisignature scheme requires a forced verification at every level to avoid the overlooking of the predecessors' signatures. However, in parallel multisignature scheme the verification of individual signatures is performed by a designated clerk. We show that our schemes are secure against existential forgery under adaptive chosen message attack in the random oracle model.