TY - JOUR T1 - XTR-Kurosawa-Desmedt Scheme AU - Ding , Xiuhuan AU - Fu , Zhiguo AU - Zhang , Shugong JO - Communications in Mathematical Research VL - 3 SP - 265 EP - 276 PY - 2021 DA - 2021/07 SN - 25 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/cmr/19333.html KW - XTR, Kurosawa-Desmedt scheme, adaptive chosen-ciphertext security, XTR-DDH assumption. AB -

This paper proposes an XTR version of the Kurosawa-Desmedt scheme. Our scheme is secure against adaptive chosen-ciphertext attack under the XTR version of the Decisional Diffie-Hellman assumption in the standard model. Comparing efficiency between the Kurosawa-Desmedt scheme and the proposed XTR-Kurosawa-Desmedt scheme, we find that the proposed scheme is more efficient than the Kurosawa-Desmedt scheme both in communication and computation without compromising security.