کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
428823 686938 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cryptanalysis of a CP-ABE scheme with policy in normal forms
ترجمه فارسی عنوان
رمز گشایی از یک طرح CP-ABE با سیاست در فرم های طبیعی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
چکیده انگلیسی


• We cryptanalyzed Rao and Dutta's CP-ABE scheme by mounting a CPA.
• A registered node in VANET can decrypt a ciphertext with unsatisfied DNF policy.
• Root cause of the attack exists in all CP-ABE schemes with normal forms policy.
• We propose a solution to serve as remarks in designing a secure CP-ABE scheme.

In 2013, Rao and Dutta constructed an efficient attribute based access control mechanism for vehicular ad hoc network (VANET) based on a newly proposed ciphertext-policy attribute-based encryption (CP-ABE) scheme. As the CP-ABE scheme views access policy in normal forms, the length of ciphertext is independent against the number of attributes in the policy besides having constant number of pairing operations for both encryption and decryption functions. In this paper, we cryptanalyze Rao and Dutta's CP-ABE scheme by mounting a chosen plaintext attack to demonstrate that a registered node in VANET can (eavesdrop the conversation to) decrypt a ciphertext with unsatisfied disjunctive normal form policy. Since the security of Rao and Dutta's proposed attribute based access control mechanism for VANET relies on the proposed CP-ABE scheme, our attack indicates that the proposed access control mechanism is insecure. Subsequently, the root cause of the attack and possible solutions are presented to serve as important remarks in designing a secure CP-ABE scheme.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Information Processing Letters - Volume 116, Issue 7, July 2016, Pages 492–495
نویسندگان
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