Convertible Authenticated Encryption Scheme Without Using Conventional One-Way Function

نویسنده

  • Hung-Yu Chien
چکیده

An authenticated encryption allows the designated recipient to verify the authenticity while recovering the message. To protect the recipient’s benefit in case of a later dispute, a convertible authenticated encryption scheme allows the recipient to convert the authenticated encryption into an ordinary signature so that it becomes a publicly verifiable. This paper shows a universal forgery attack on Araki et al.’s convertible authenticated encryption scheme, and proposes a new convertible authenticated encryption scheme. Without using any conventional one-way function, the proposed scheme simplifies its security assumption on only a public hard problem – the discrete logarithm problem.

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عنوان ژورنال:
  • Informatica, Lith. Acad. Sci.

دوره 14  شماره 

صفحات  -

تاریخ انتشار 2003