A Non-delegatable Identity-based Designated Verifier Signature Scheme without Bilinear Pairings

Maryam Rajabzadeh Asaar; Mahmoud Salmasizadeh

Paper 2012/332

A Non-delegatable Identity-based Designated Verifier Signature Scheme without Bilinear Pairings

Maryam Rajabzadeh Asaar and Mahmoud Salmasizadeh

Abstract

Up to now, several non-delegatable identity-based (strong) designated verifier signature schemes using bilinear pairings are proposed. In these identity-based (strong) designated verifier signature schemes, bilinear pairings are employed either in signing and verifying steps or only in the verifying step. However, the computation cost of pairings at a security level equivalent to a 128-bit symmetric key of AES is approximately 20 times higher than that of exponentiation over an elliptic curve group. Hence, presenting a (strong) designated verifier signature scheme which is identity-based without pairings and supports non-delegatability as well is vital. In this study, a non-delegatable identity-based designated verifier signature scheme without bilinear pairings using two concatenated Schnorr signatures is proposed. Our construction not only is approximately 40 times more efficient compared to the existing non-delegatable identity-based (strong) designated verifier signature schemes due to the avoiding bilinear pairings but also it is provable secure in the random oracle.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): asaar @ ee sharif edu
History: 2012-06-22: received
Short URL: https://ia.cr/2012/332
License: CC BY

BibTeX

@misc{cryptoeprint:2012/332,
      author = {Maryam Rajabzadeh Asaar and Mahmoud Salmasizadeh},
      title = {A Non-delegatable Identity-based Designated Verifier Signature Scheme without Bilinear Pairings},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/332},
      year = {2012},
      url = {https://eprint.iacr.org/2012/332}
}