Certificateless signcryption

  • Authors:
  • M. Barbosa;P. Farshim

  • Affiliations:
  • Universidade do Minho, Braga, Portugal;University of Bristol, Bristol, United Kingdom

  • Venue:
  • Proceedings of the 2008 ACM symposium on Information, computer and communications security
  • Year:
  • 2008

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Abstract

Certificateless cryptography inherits a solution to the certificate management problem in public-key encryption from identity-based techniques, whilst removing the secret key escrow functionality inherent to the identity-based setting. Signcryption schemes achieve confidentiality and authentication simultaneously by combining public-key encryption and digital signatures, offering better overall performance and security. In this paper, we introduce the notion of certificateless signcryption and present an efficient construction which guarantees security under insider attacks, and therefore provides forward secrecy and non-repudiation.