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Logical Security, Network Security: Internet Security By Shon Harris
The Web is not the Internet. The Web runs on top of the Internet, in a sense. The Web is the collection of HTTP servers that hold and process web sites we see. The Internet is the collection ofLogical Security, Network Security: Internet Security Protocol By Shon Harris
The Internet Protocol Security (IPSec) protocol suite provides a method of setting up a secure channel for protected data exchange between two devices. The devices that share this secure channel canWhat Is A Data Recovery Service And When To Use It | Online Data Recovery Guide
What Is A Data Recovery Service And When To Use It | Online Data Recovery GuideLogical Security, Network Security: Secure Electronic Transaction By Shon Harris
Secure Electronic Transaction (SET) is a security technology proposed by Visa and MasterCard to allow for more secure credit card transaction possibilities than what is currently available. SET hasDifferential Cryptanalysis By Shon Harris
This type of attack also has the goal of uncovering the key that was used for encryption purposes. It was invented in 1990 as an attack against DES, and it turned out to be an effective andLogical Security, Network Security: Summary By Shon Harris
Cryptography has been used in one form or another for over 4000 years, and the attacks on cryptography have probably been in place for 3999 years and 364 days. As one group of people works to findLogical Security, Network Security: Key Management Principles
Keys should not be in cleartext outside the cryptography device. As stated previously, many cryptography algorithms are known publicly, which puts more stress on protecting the secrecyAnswers By Shon Harris
1. A. Cryptanalysis is the process of trying to reverse-engineer a cryptosystem with the possible goal of uncovering the key used. Once this key is uncovered, all other messages encrypted with thisLogical Security, Network Security: Key Management By Shon Harris
Cryptography can be used as a security mechanism to provide confidentiality, integrity, and authentication, but not if the keys are compromised in any way. The keys can be captured, modifiedLogical Security, Network Security: How Would a Birthday Attack Take Place?
Sue and Joe are going to get married, but before they do, they have a prenuptial contract drawn up that states if they get divorced, then Sue takes her original belongings and Joe takes his originalLogical Security, Network Security: Link Encryption vs. End-to-End Encryption By Shon Harris
Encryption can be performed at different communication levels, each with different types of protection and implications. Two general modes of encryption implementation are link encryption andCareer Path By Shon Harris
Today any field that pertains to technology has been affected by the growing demands of security, whether it is a network administrator or engineer, programmer, implementer, or consultant. IncreaseLogical Security, Network Security: Pretty Good Privacy By Shon Harris
Pretty Good Privacy (PGP) was designed by Phil Zimmerman as a freeware e-mail security program and was released in 1991. It was the first widespread public key encryption program.Logical Security, Network Security: Multipurpose Internet Mail Extension By Shon Harris
Multipurpose Internet Mail Extension (MIME) is a technical specification indicating how multimedia data and e-mail attachments are to be transferred. The Internet has mail standards thatLogical Security, Network Security: Elliptic Curve Cryptosystems
Elliptic curves are rich mathematical structures that have shown usefulness in many different types of applications. An elliptic curve cryptosystem (ECC) provides much of the samePCI DSS Requirement 1.1.4 | Description of Groups, Roles, and Responsibilities
Description of groups, roles, and responsibilities for logical management of network components for Payment Card Industry Data Security Standards.Logical Security, Network Security: The One-Way Hash by Shon Harris
A one-way hash is a function that takes a variable-length string and a message and produces a fixed-length value called a hash value. For example, if Kevin wants to send a message to Maureen andLogical Security, Network Security: Types of Ciphers
Symmetric encryption ciphers come in two basic types: substitution and transposition (permutation). The substitution cipher replaces bits, characters, or blocks of characters withLogical Security, Network Security: Message Integrity
Parity bits and cyclic redundancy check (CRC) functions have been used in protocols to detect modifications in streams of bits as they are passed from one computer to another, but they canOne-Time Pad - Cryptography By Shon Harris
A one-time pad is a perfect encryption scheme because it is considered unbreakable if implemented properly. It was invented by Gilbert Vernam in 1917, so sometimes it is referred to as theLogical Security, Network Security: Digital Signature Standard By Shon Harris
Because digital signatures are so important in proving who sent which messages, the U.S. government decided to establish standards pertaining to their functions and acceptable use. In 1991, NISTLogical Security, Network Security: Types of Symmetric Systems
Block ciphers have several modes of operation. Each mode specifies how a block cipher will operate. One mode may work better in one type of environment for specific functionality,Logical Security, Network Security: Methods of Encryption By Shon Harris
Although there can be several pieces to an encryption process, the two main pieces are the algorithms and the keys. As stated earlier, algorithms usedLogical Security, Network Security: International Data Encryption Algorithm
International Data Encryption Algorithm (IDEA) is a block cipher and operates on 64- bit blocks of data. The 64-bit data block is divided into
