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A key-escrow free identity-based signature scheme without requirement of a secure channel in the private key issuance phase

Author

Listed:
  • Subhas Chandra Sahana
  • Sangeeta Mashahary
  • Bubu Bhuyan
  • Somen Debnath

Abstract

Identity-based cryptosystem (IBC) provides us the simplest key management procedures over traditional public key cryptosystem (PKC) as it eliminates the need for certificates of PKC. Hence, no certificate management activities are involved in IBC. However, there are two major drawbacks with the identity-based cryptosystem. One is the key-escrow problem and the other one is the necessity of a channel which is secure for the transmission of the private key, generated by a trusted centre called key generation centre (KGC). In this work, we propose an identity-based signature scheme, fitted in an existing established variant IBC model. The proposed scheme avoids the necessity of the secure channel as well as it is key-escrow free. The proposed scheme is constructed using bilinear pairings and based on the blinding-binding technique.

Suggested Citation

  • Subhas Chandra Sahana & Sangeeta Mashahary & Bubu Bhuyan & Somen Debnath, 2021. "A key-escrow free identity-based signature scheme without requirement of a secure channel in the private key issuance phase," International Journal of Intelligent Enterprise, Inderscience Enterprises Ltd, vol. 8(2/3), pages 296-305.
    • Handle: RePEc:ids:ijient:v:8:y:2021:i:2/3:p:296-305
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