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Cryptography Essay Topics & Paper Examples

Introduction to Cryptography

Q1. Which tool or technique from the above list would be most effective for a cryptanalyst to use to decipher a text encrypted with the Caesar cipher, and why? The Caesar cipher is a substitution cipher that substitutes one character for another and shifting the alphabet by a determined number of spaces. This type of cipher is vulnerable to statistical analysis. (Kendall, 2008). Therefore, a Histogram would be the most effective tool to use. The Histogram can be used to show “the relative frequency of each of the characters in the document”. (CSEC 630 Lab Assignment 1 – Introduction to Cryptography, n.d.). Since there are only 25 possible encryptions keys…”if we know how one letter should be deciphered, then we…

Network VPN and Web Security Cryptography

Securing Internet commercial transactions and sensitive banking data is increasingly becoming critical as threats to computer networks continue to cause significant financial losses resulting from data damage, loss or corruption by spy ware, viruses and other data corrupting hostile codes (Mogollon, 2007). The consequences of having weak security system administration become enormous and companies should step up their security measures to protect sensitive data by cryptographic methods. In online transactions, the secure Web server communicates with the client’s computer by authenticating each other. They do this by enciphering the data which is transmitted by means specific protocols such as transport layer security (TLS), Internet protocol security (IPsec) and secure socket layer (SSL). All Web browsers such as Internet Explorer and…

Public Infrastructure Key

The PKI is a set of hardware, software, procedures and people for the creation, distribution, storing and management of digital certificates. It also maintains the networking environment of an organization by providing management service which could enable digital signature capabilities. It also enabled the users of unsecure public network for exchanging and private cryptographic key pair in order to obtain and share a trusted authority between the management of an organization. For improving an organization, PKI includes use of digital signatures, certificate validation, and permission management service in order to implement a wide variety of enterprise solution within an organization. The implementation of certification authority is primary way of PKI in which it could benefit an organization and Information security…

Computer College – Fairview Campus

1.0 Proposed Thesis Title: “Easy Login System for Computers in AMA Fairview using ID Barcode Scanner” 2.0 Area of Investigation: This study focuses on having a good monitoring system for easy login on the computers in the AMA Fairview computer laboratories in terms of students or professors using computers as well as monitoring the time and problems about each specific computer. 3.0 Reason for choosing this Topic: To secure the laboratory equipments, the professors must ensure that students will handle them properly. The proponents chose this study to give ease on monitoring of student’s usage in each individual computer and also monitor the student’s attendance. 4.0 Importance of the Study: The study will help to improve the services of the…

Vulnerability of a Cryptosystem

The vulnerability that has been discovered has a primary affect to a cryptosystem and a secondary affect to a cryptosystem. The vulnerability in question is a weakness in the MD5 algorithm that would allow for collisions in output. As a result, attackers can generate cryptographic tokens or other data that illegitimately appear to be authentic. Now the secondary affect is that the MD5 hashes may allow for certificate spoofing on a Cisco ASA system. If an attacker was able to exploit this weakness on the University’s cryptosystem, the said attacker could construct forged data in a variety of forms that will cause software using the MD5 algorithm to incorrectly identify it as trustworthy. Since the underlying vulnerability occurs in a…