Using Circuitry and Computer Analysis for Modern Cryptology

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Authors
Lavallee, Peter
Advisor
Anthony Szpilka
Philip Rose
Mary Keefe
Editor
Date of Issue
2008-04-01
Subject Keywords
Publisher
Citation
Series/Report No.
item.page.identifier
Title
Using Circuitry and Computer Analysis for Modern Cryptology
Other Titles
Type
thesis
Description
Abstract
Modem cryptology has allowed business to expand at an incredible rate by allowing people to transact business securely online. A common encryption process for encoding and decoding information utilizes a linear feedback shift register (LFSR) to generate a quasi-random string ofbinary digits. This “key stream” is then combined with the digits of the original or “plain text” using the exclusive-or logical operation, to create the encrypted or “cipher text.” Using modem circuit components, a circuit to implement this type of encryption was constructed and evaluated. The circuit’s operation was then simulated by the specialized computer program Cryptographic Analysis Program (CAP). Using CAP allowed for multiple methods of generating quasi-random bit strings: both the LFSR and the method of cellular automata were examined here. After these two key stream generators were analyzed, some observations were made concerning the general security of each.
Sponsors
Degree Awarded
Bachelor's
Semester
Spring
Department
Mathematics, Engineering & Computer Science