The book consists of seven chapters out of which aspects of cryptosystems, synopsis of neural cryptosystem and security issues discussed in chapters are defined at the begining. Different factors in evaluating various techniques along with structure of keys are also prescribed. Second chapter of the book deals with Artificial Neural Network and its various models, training of ANN along its various principles in security aspects are prescribed. Neural network guided secret key based cryptographic technique through chaining mechanism has been presented in chapter three. S-box operation based...