On the Security of An Identity Based Broadcast Encryption Scheme
نویسندگان
چکیده
Recently, Ren and Gu proposed a new identity-based broadcast encryption scheme, and claimed that their scheme is secure against chosen-ciphertext attack in the standard model. However, by giving a concrete attack, we indicate that Ren and Gu’s scheme is even not secure against chosen-plaintext attack. Keywordsidentity based broadcast encryption, chosen-ciphertext attack, chosen-plaintext attack, cryptanalysis
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 کاملForward-Secure Identity-based Broadcast Encryption Scheme from Lattice
Motivated by an identity-based broadcast encryption scheme from lattice[1] and a forward-secure identity-based encryption scheme[2], we propose a forward-secure identity-based broadcast encryption scheme from lattice by adding the forward-security mechanism on broadcast encryption scheme. Our scheme satisfies the security requirements of both the broadcast encryption scheme and forward-security...
متن کاملAn efficient secure channel coding scheme based on polar codes
In this paper, we propose a new framework for joint encryption encoding scheme based on polar codes, namely efficient and secure joint secret key encryption channel coding scheme. The issue of using new coding structure, i.e. polar codes in Rao-Nam (RN) like schemes is addressed. Cryptanalysis methods show that the proposed scheme has an acceptable level of security with a relatively smaller ke...
متن کاملEfficient Multi-receiver Identity-Based Encryption and Its Application to Broadcast Encryption
In this paper, we construct an efficient “multi-receiver identity-based encryption scheme”. Our scheme only needs one (or none if precomputed and provided as a public parameter) pairing computation to encrypt a single message for n receivers, in contrast to the simple construction that re-encrypts a message n times using Boneh and Franklin’s identity-based encryption scheme, considered previous...
متن کاملEfficient Identity-based Broadcast Encryption without Random Oracles
We propose a new efficient identity-based broadcast encryption scheme without random oracles and prove that it achieves selective identity, chosen plaintext security. Our scheme is constructed based on bilinear Diffie-Hellman inversion assumption and it is a good efficient hybrid encryption scheme, which achieves O(1)-size ciphertexts, public parameters and constant size private keys. In our sc...
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 2012