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arXiv 1310.5902cs.CR
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关于隐写系统完全安全性的极限

On The Limits Of Perfect Security For Steganographic System

Khan Farhan Rafat, M. Sher

摘要:

到目前为止,关于隐写系统的完美安全性的讨论仍然局限于数学家和信息论专家的领域,他们对自己的哲学、假设和推理的简洁和符号化的表达使天真的学者很难理解这些概念。本文不仅是一个努力,这样的先驱理解之一的局限性进行评价,但也说明了一个陷阱,在另一个计划,声称有完美的安全性,而不使用公共或秘密密钥。目标设定是通过对比隐写方案的测试结果来实现的,该方案利用带有相应首字母缩略词的英语单词来隐藏聊天中的秘密信息-这是当今交换信息的首选方式。分别通过发起基本的选择消息攻击和选择覆盖攻击,以及通过提出目标方案的增强,揭示了比特嵌入过程中对隐写密钥的完全安全性和隐蔽性的误解。

英文摘要:

Until now the discussion on perfect security for steganographic systems has remained confined within the realm of mathematicians and information theory experts whose concise and symbolic representation of their philosophies, postulates, and inference thereafter has made it hard for the naïve academics to have an insight of the concepts. This paper is an endeavor not only to appraise on the limitations of one of such pioneer comprehensions but also to illustrate a pitfall in another scheme that asserts on having perfect security without the use of public or secret key. Goals set are accomplished through contrasting test results of a steganographic scheme that exploits English words with corresponding acronyms for hiding bits of secret information in chat - a preferred way to exchange messages these days. The misapprehension about perfect security and reign in characteristic of stego key in bit embedding process are unfolded respectively by launching elementary chosen-message and chosen-cover attack, and through proposed enhancement of target scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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