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Introduction to Protocol Building Blocks In Cryptography

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  • Maher Ali Rusho

Abstract

The Whole point of cryptography is to solve problems. It solves problems that involve secrecy, authentication ,integrity and dishonest people .A protocol Is a series of steps ,involving two or more parties designed to accomplish a task. A series of steps means that the protocol has a sequence, from start to finish. Analyzing stream ciphers is often easier than analyzing block ciphers. For example, one important metric used to analyze LFSR-based generators is linear complexity, or linear span. This is defined as the length, n, of the shortest LFSR that can mimic the generator output. Any sequence generated by a finite-state machine over a finite field has a finite linear complexity [1006]. Linear complexity is important because a simple algorithm, called the Berlekamp-Massey algorithm, can generate this LFSR after examining only 2n bits of the keystream [1005]. Once you’ve generated this LFSR, you’ve broken the stream cipher.

Suggested Citation

  • Maher Ali Rusho, 2022. "Introduction to Protocol Building Blocks In Cryptography," International Journal of Sciences, Office ijSciences, vol. 11(09), pages 1-3, September.
    • Handle: RePEc:adm:journl:v:11:y:2022:i:9:p:1-3
    DOI: 10.18483/ijSci.2612
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