Identity based signcryption schemes without random oracles

Prashant Kushwah; Sunder Lal

Paper 2011/372

Identity based signcryption schemes without random oracles

Prashant Kushwah and Sunder Lal

Abstract

Signcryption is a cryptographic primitive which performs encryption and signature in a single logical step with the cost lower than signature-then-encryption approach.. In this paper we gave attacks on confidentiality and unforgeability of two identity based signcryption schemes without random oracles. Further we proposed an improved identity based signcryption scheme without random oracles. We also proposed an identity based public verifiable signcryption scheme with third party verification without random oracles.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: Signcryption public verifiable signcryption identity based cryptography provable security standard model.
Contact author(s): pra ibs @ gmail com
sunder_lal2 @ rediffmail com
History: 2011-07-10: received
Short URL: https://ia.cr/2011/372
License: CC BY

BibTeX

@misc{cryptoeprint:2011/372,
      author = {Prashant Kushwah and Sunder Lal},
      title = {Identity based signcryption schemes without random oracles},
      howpublished = {Cryptology {ePrint} Archive, Paper 2011/372},
      year = {2011},
      url = {https://eprint.iacr.org/2011/372}
}