2-Subset Difference Scheme for Broadcast Encryption
نویسندگان
چکیده
Abstract. Broadcast Encryption allows a center to broadcast encrypted messages to a set of users so that only privileged users can decrypt them. In this paper, we propose an efficient broadcast encryption scheme based on the “Subset Difference” (SD) scheme. It reduces the transmission overhead by 50 percent while the storage overhead remains the same but the computational overhead somewhat increases.
منابع مشابه
Design and formal verification of DZMBE+
In this paper, a new broadcast encryption scheme is presented based on threshold secret sharing and secure multiparty computation. This scheme is maintained to be dynamic in that a broadcaster can broadcast a message to any of the dynamic groups of users in the system and it is also fair in the sense that no cheater is able to gain an unfair advantage over other users. Another important feature...
متن کاملCombinatorial Subset Difference Public Key Broadcast Encryption Scheme for Secure Multicast
Public key broadcast encryption is a cryptographic method to securely transmit a message from anyone to a group of receivers such that only privileged users can decrypt it. A secure multicast system allows a user to send a message to a dynamically changing group of users. The secure multicast can be realized by the broadcast encryption. In this paper, we propose a novel combinatorial subset dif...
متن کاملEfficient Broadcast Encryption Using Multiple Interpolation Methods
We propose a new broadcast encryption scheme based on polynomial interpolations. Our scheme, obtained from the Naor-Pinkas scheme by partitioning the user set and interpolating multiple polynomials, turns out to be better in efficiency than the best known broadcast schemes like the Subset Difference and the Layered Subset Difference methods, which are tree based schemes. More precisely, when r ...
متن کاملEnhanced Outsider-anonymous Broadcast Encryption with Subset Difference Revocation
This paper puts forward an efficient broadcast encryption in public key setting employing ternary tree subset difference method for revocation. It provides outsider anonymity disabling the revoked users from getting any information of message and concealing the set of subscribed users from the revoked users. Our approach utilizes composite order bilinear group setting and exhibits significant i...
متن کاملSecure and Insecure Modifications of the Subset Difference Broadcast Encryption Scheme
In ACISP 2003, Hwang et al. proposed a broadcast encryption scheme, which is a modification of the Subset Difference (SD) method. In this paper we present how their scheme can be broached in a way a collusion of two receivers can obtain other receivers’ keys which are not given to any of the colluding receivers. We also propose a new method using trapdoor one-way permutations to reduce the stor...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007