کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
457519 695942 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New identity-based key-insulated convertible multi-authenticated encryption scheme
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
New identity-based key-insulated convertible multi-authenticated encryption scheme
چکیده انگلیسی

Elaborating on the merits of convertible multi-authenticated encryption (CMAE) schemes and key-insulated systems, we propose a novel identity-based key-insulated convertible multi-authenticated encryption scheme (IB-KI-CMAE), which can effectively reduce the impact caused by the key exposure. Our scheme allows each user to periodically update his private key while the corresponding public one remains unchanged. Additionally, a group of signers can cooperatively generate an authenticated ciphertext such that only the designated recipient has the ability to decrypt the ciphertext and verify their signature. In case of a later dispute over repudiation, the designated recipient can easily reveal the converted multi-signature for public arbitration. Our scheme can bring crucial benefits to the applications such as joint account and business contract signing. Moreover, in the random oracle model, we also formally prove that the proposed scheme achieves the security requirement of confidentiality against indistinguishability under adaptive chosen-ciphertext attacks (IND-CCA2) and that of unforgeability against existential forgery under adaptive chosen-message attacks (EF-CMA).


► We propose an identity-based key-insulated convertible multi-authenticated encryption scheme.
► The proposed scheme can effectively reduce the impact caused by key exposure.
► We also proved that our scheme achieves the IND-CCA2 and the EF-CMA security in random oracle models.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Network and Computer Applications - Volume 34, Issue 5, September 2011, Pages 1724–1731
نویسندگان
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