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An ultra robust session key based image cryptography
Microsystem Technologies ( IF 1.6 ) Pub Date : 2019-07-01 , DOI: 10.1007/s00542-019-04518-9
Hari Narayan Khan , Ayan Chaudhuri , Abhishek Das , Atal Chaudhuri

Increased use of internet demands substantial protection for secret image file from any adversary, specifically during transmission. In the field of cryptography there are two role models: cryptographer and crypt-analyst/attacker. The cryptographer develops techniques to make sure certain safety and security for transmissions while the crypt-analyst attempts to undo the former’s work by cracking the same. The basic goal of our scheme is to design an image encryption model which is extra challenging against any attack. In our research article, we have introduced session key dependent image encryption technique wherein the session key is the function of an original secret key (known for a pair of sender and receiver one time forever at the beginning) and the present secret image to be encrypted. Additionally the scheme does not require extracting and remembering of session keys to construct the subsequent session keys although the keys change during each transmission. Besides, in our scheme a double encryption technique is required, which once again confirms that the technique we propose is more robust than the conventional image encryption techniques known till date and is capable of resisting cyber-attacks of such kinds.



中文翻译:

基于超健壮会话密钥的图像加密

互联网的日益普及要求对机密图像文件进行充分保护,以防任何对手,特别是在传输过程中。在密码学领域中,有两个角色模型:密码学家和密码分析师/攻击者。密码学家开发了确保传输安全性的技术,而密码分析师试图通过破解来取消前者的工作。我们方案的基本目标是设计一种图像加密模型,该模型在应对任何攻击时都更具挑战性。在我们的研究文章中,我们介绍了依赖于会话密钥的图像加密技术,其中,会话密钥是原始秘密密钥(一开始对一对发送者和接收者来说永远一次知道)和要加密的当前秘密图像的功能。另外,尽管密钥在每次传输期间改变,但是该方案不需要提取和记住会话密钥来构造随后的会话密钥。此外,在我们的方案中,需要双重加密技术,这再次证实了我们提出的技术比迄今为止已知的传统图像加密技术更强大,并且能够抵抗此类网络攻击。

更新日期:2019-07-01
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