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Information Security Articles
Page 24 of 30
What is Firewalls in information security?
A firewall can be represented as a specific type of network security device or a software program that monitors and filters incoming and outgoing network traffic based on a represented group of security rules. It facilitates as a barrier between inside private networks and outside sources (such as the public Internet).The objective of a firewall is to enable non-threatening traffic and avoid malicious or unwanted data traffic for securing the computer from viruses and attacks. A firewall is a cybersecurity tool that filters network traffic and supports users block malicious software from accessing the web in infected computers.Firewalls can be ...
Read MoreWhat is Kerberos in information security?
Kerberos is a network authentication protocol designed to support powerful authentication for client/server applications using secret-key cryptography. Kerberos provides the largest level of security to network resources.Kerberos was produced by MIT as a solution to these network security issues. The Kerberos protocol uses powerful cryptography so that a user can prove its identity to a server (and vice versa) across an insecure network connection. After a client and server has used Kerberos to determine their identity, they can also encrypt all of their communications to provide privacy and data integrity as they go about their business.Kerberos is openly accessible from ...
Read MoreWhat are the keys used by PGP in information security?
PGP creates use of four types of keys including one-time session symmetric keys, Public keys, Private keys, and Passphrase based symmetric keys.Session key generation − Each session key is related to a single message and is used only for the goals of encryption and decrypting that message. Remind that message encryption/decryption is completed with a symmetric encryption algorithm. Considering that it is a 128 bit key that is needed, the random 128 bit numbers are created using CAST-128.The input to the random number generator include as 128-bit key (this is a random number using the keystroke input from the user) ...
Read MoreWhat are the services of PGP?
PGP includes the following services which are as follows −Authentication − The hash function used is SHA-1 which makes a 160 bit message digest. EP (DP) defines public encryption (decryption) and the algorithm used can be RSA or DSS.The set of SHA-1 and RSA supports an effective digital signature scheme. Because of the strength of RSA the recipient is guaranteed that only the possessor of the connecting private key can make the signature. Because of the strength of SHA-1 the recipient is guaranteed that no one else can create a new message that connects the hash code and therefore the ...
Read MoreWhat is Hashing in information security?
Hashing is the procedure of translating a given key into a code. A hash function can be used to substitute the data with a newly generated hash code. Hash algorithms are generally used to offer a digital fingerprint of a file’s contents often used to provide that the file has not been changed by an intruder or virus. Hash functions are also employed by some operating systems to encrypt passwords. Hash functions support a measure of the integrity of a file.Hashing creates use of algorithms that convert blocks of information from a file in a much shorter value or key ...
Read MoreWhat is the use of stream ciphers in information security?
A stream cipher is an approaches of encryption where a pseudorandom cipher digit stream is mixed with plain text digits. This pseudorandom cipher digit stream is used to each binary digit, one bit at a time. This approach of encryption uses an infinite number of pseudorandom cipher digits per key.A Stream Cipher can be used for symmetric key cryptography, or when the similar key is used to encrypt and decrypt data. A stream cipher encrypts an arbitrary length of plain text, one bit at a time, with an algorithm that needs a key.For this type of encryption to remain secure, ...
Read MoreHow to verify the digital signatures in information security?
A Digital Certificate is an electronic "password" that enables a person, organization to transfer data securely over the web using the public key infrastructure (PKI). Digital Certificate is also referred to as public key certificate or identity certificate.Digital certificates play an essential role in maintaining online commerce safe. If the browser alerts a problem with a digital certificate, it is well-advised not to click through. Rather than call the business using a telephone number from the statements or phone book, and inquire as to the problem.Public key encryption need SSL (Secure Sockets Layer) to encrypt some data between the customer’s ...
Read MoreWhat are the technologies that provide imperative levels of protection against unknown attacks?
There are three technologies that supports imperative levels of protection against unknown attacks such as software fault isolation, intrusion detection through program analysis, and fine-grained mandated access controls.These technologies distribute an imperative feature: they do not based on the efficient operation of the programs; rather than, they provide a secondary layer of protection should a program be intrude and corrupted. It is applicable that these systems can also enclose flaws; but in order for a victorious apply to take place, both the application and the secondary protection need to be undermined simultaneously. As error will carry on to be patched, ...
Read MoreWhat are Digital Certificates in information security?
A digital certificate is an electronic "password" that enables a person, organization to exchange data securely over the web using the public key infrastructure (PKI). Digital Certificate is also called a public key certificate or identity certificate.A digital signature is a numerically generated code that validates the authenticity of a software, message, or digital document. It needs encryption techniques that are secure to be treated legal and binding in some countries. It guarantees that the file has not been changed during transmission, supporting a layer of security against cyber threats and attacks.When a person makes a digital signature, two more ...
Read MoreWhat are Unknown Attacks in information security?
Unknown attack category defines a completely new class label that the classifier has not undergone before in the training set. For example, if the classifier was not trained on DoS attacks and undergone DoS attacks in the testing set.There are the technologies that supports imperative levels of protection against unknown attacks including software fault isolation, intrusion detection through program analysis.These technologies distribute an imperative property: they do not based on the efficient operation of the programs. Rather than, they provide a secondary layer of protection should a program be breached and corrupted. It is available that these systems can also ...
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