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- •Standard, 48 States
- •Standard (AK, HI)
Ships from: South Bend, IN
Usually ships in 1-2 business days
- •Canadian
- •International
- •Standard, 48 States
- •Standard (AK, HI)
Overview
A 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