期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2013
卷号：3
期号：2
页码：287-293
出版社：International Journal of Soft Computing & Engineering
摘要：This paper mainly focuses on various types of attacks on symmetric cipher & asymmetric cipher .In this paper we tried to describe the existing cryptanalytic attacks on various ciphers and countermeasures to these attacks have been suggested on the basis of information available to attacker ,computational time requirements and memory requirements etc . In order to develop a new secure cipher, it is very necessary that these attacks should be taken into consideration during development and countermeasures of these attacks should be applied in the design, so that the new design is not vulnerable to these attacks. It will also facilitate the security analysis of the existing ciphers and provide an opportunity to understand the requirements for developing a secure and efficient cipher design. This paper surveys about various cryptanalysis techniques for image encryption schemes ,public key cryptosystems ,various encryption standards such as AES ,DES,RSA etc and then tries to suggest some points to improve the level of security .
