مجله بین المللی امنیت اطلاعات
سال:1391 | دوره:4 | شماره:1 |تعداد مقالات:8

Welcome to the first issue of the fourth volume of ISeCure. Based on the Editorial Board decision, this issue is devoted to the extended/revised versions of some of ISCISC' 11 selected papers, which passed an additional review process by our referees. ISCISC is an international conference on security and cryptology, initiated and being organized annually by the Iranian Society of Cryptography (ISC). The eighth series of this conference (ISCISC’11) was held at the Ferdowsi University of Mashhad in September 2011. In this issue, we publish seven papers of this category. The title of the papers are similar to or the same as the corresponding papers in the conference, but the content was extended, and revised based on the comments received in the second (and possibly third) round of the review. In some cases, where the conference paper had been written in Persian, the article appearing here was rewritten in English.

The intriguing characteristics of chaotic maps have prompted researchers to use these sequences in watermarking systems to good effect. In this paper we aim to use a tent map to encrypt the binary logo to achieve a like-noise signal.This approach makes extraction of the watermark signal by potential attacker very hard. Embedding locations are selected based on certain principles.Experimental results demonstrate that our proposed watermarking method is highly superior to other techniques reported in literature and readily achieves the desired robustness and security level.