Cryptanalysis is the study of methods for obtaining the meaningful message from the encrypted information without access to the secret key information that is essential for decryption. One important task in cryptanalysis when only the cipher text is available is: identification of the encryption method used. The focus of this work is on identification of the encryption method. In this work, support vector machine based methods are explored for identification of encryption method from a given cipher text. This task is considered as a pattern classification task. One approach is proposed to the...

Internet plays an important role in moving the world in such a way that its usage has become inevitable in all aspects. It has revolutionized the computer and communicating the world like nothing before. Internet has shown a strong and positive influence on business, education and administration. People are connected together through various manifestations of internet like mobile communications, net business, banking and social contacts. Email spam in computing term, means something that is unwanted. Normally it is referred as an unwanted email or Usenet messages, and also referred as an...