{"product_id":"symmetric-cryptography-in-computer-communications-von-vasilios-katos","title":"Symmetric cryptography in computer communications","description":"\u003cp\u003eA method is proposed to offer privacy in computer  communications, using symmetric product block  ciphers. The security protocol involves a cipher  negotiation stage in which two communicating parties  select privately a cipher from a public cipher space.  The cipher negotiation process includes an on-line  cipher evaluation stage in which  the cryptographic strength of the proposed cipher is  estimated. Cryptographic strength is measured by  confusion and diffusion.  A method is proposed to describe quantitatively these  two properties. A number of parameters are defined,  such as the confusion and diffusion matrices and the  marginal diffusion. These parameters involve  computationally intensive calculations that are  performed off-line, before any communication takes  place. Once they are calculated, they are used to  obtain estimation equations, which are used for  on-line, fast evaluation of the confusion and  diffusion of the negotiated cipher. A technique  proposed in this thesis describes how to calculate  the parameters and how to use the results for fast  estimation of confusion and diffusion for any cipher  instance within the defined cipher space.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783844386271\"\u003e\u003ch3\u003eProduct cipher negotiation with on-line evaluation for private communication over computer networks\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783844386271","offer_id":39471358902365,"sku":"9783844386271","price":79.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/7ab34728-6f6d-4f5a-8ce2-e8c5b21fc6c6.jpg?v=1755666444","url":"https:\/\/shop.autorenwelt.de\/products\/symmetric-cryptography-in-computer-communications-von-vasilios-katos","provider":"Autorenwelt Shop","version":"1.0","type":"link"}