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Data Structure Articles
Page 95 of 164
What are the types of Steganography?
Steganography is not only the art of hiding information but also hiding the element of transmission of secret information. Steganography hides the secret information in another file in such a method that only the recipient understand the existence of message.In ancient time, the data was secured by hiding it on the back of wax, scripting tables, and stomach of rabbits or on the scalp of the slaves. But today’s there are some people transmit the information in the form of text, images, video, and audio over the medium.It can be securely transmission of confidential information, the multimedia objects such as ...
Read MoreWhat are the methods of Image Steganography in Information Security?
Image steganography has truly state-of-the-art with the invention of quick, dynamic computers. Software is simply accessible for processing and hiding of data images. Images can also be recovered very simply.There are three main methods of information hiding in images which are as follows −Least Significant Bit Insertion − This is the most famous image steganography technique. It is simple, easy to make and also simply to use. Unfortunately, it is intensely vulnerable to attack. A simple conversion of structure can damage all hidden data.The best approach of image document to hide data inside is a 24 Bit BMP (Bitmap) image. ...
Read MoreWhat are the techniques of Text Steganography in Information Security?
Steganography is the art and science of concealing a message within another message without drawing some suspicion to others so that the message can only be identified by its intended recipient.There are various techniques of text steganography which are as follows −Line-shift coding − Features are marked into the text by changing the lines, so as to create recognition harder. Text lines are vertically changed for encoding. This can be used to either a format file or to the bitmap of a page.By transforming each second line of the document 1/300th of an inch up or down, line-shift encrypting provide ...
Read MoreHow does Steganography works in Information Security?
Steganography is the art and science of connecting which hides the presence of the communication. The purpose of steganography is to convey a message to a receiver in such a method that the very presence of the message is indistinguishable by a third party.In the computer world, steganography means hiding secret messages in graphics, pictures, movie, or sound. At any cost, steganography secure from pirating copyrighted materials as well as aiding in unauthorized viewing.The advantage of steganography is to connect fast in an absolutely imperceptible aspect and to prevent drawing suspicion to the communication of a hidden record.Steganography hide the ...
Read MoreWhat are the types of security mechanism in information security?
There are various types of security mechanism which are as follows −Physical Security − Physical security define limiting access to key network resources by maintaining the resources behind a locked door and secured from natural and human-made disasters.Physical security can secure a network from unintended exploitation of network equipment by untrained faculty and contractors. It can also secure the network from hackers, competitors, and terrorists walking in off the street and changing equipment configurations.It is based on the level of protection, physical security can secure a network from terrorist and biohazard events, such as bombs, radioactive spills, etc. Physical security ...
Read MoreWhat are True Random Number Generation?
A true random number generator (TRNG) uses a nondeterministic source to make randomness. Most function by measuring unpredictable natural processes, including pulse detectors of ionizing radiation activities, gas discharge tubes, and leaky capacitors.Intel has developed a commercially accessible chip that samples thermal noise by developing the voltage measured across undriven resistors. TRNG generates a true random number and is produced generally by hardware method.Because the random number produced by TRNG is complex to predict because TRNG is generated based on a physical source that is complex to forecast a random value. Hence, the random number produced from TRNG is a ...
Read MoreWhat are the principle of Symmetric Cipher in Information Security?
A symmetric cipher is one that uses the similar key for encryption and decryption. The use of a symmetric cipher presents the well-known challenge of how to share the secret key between the parties fast, as an unauthorized party to the communication can prevent it and eavesdrop on future communication.There are various principles of Symmetric Cipher which are as follows −Plaintext − This is the authentic intelligible message or information that is full into the algorithm as input.Encryption algorithm − The encryption algorithm implements several substitutions and conversion on the plaintext.Secret key − The secret key is also input to ...
Read MoreWhat is the comparison between Authentication and Authorization in Information Security?
AuthenticationAuthentication is the procedure of providing that an individual is the person that they claim to be. This contains matching a person’s claimed identity asserted through a credential (such as an ID card or unique ID number) against one or more authentication factors that are destined to that credential.Authentication is about validating the credentials such as User Name/User ID and password to verify the identity. The system decides whether it can what it can say and it is using the credentials.In public and private networks, the system authenticates the user identity through login passwords. Authentication is usually completed by a ...
Read MoreWhat is Authorization in Information Security?
Authorization is the procedure of permitting someone to do something. It defines it an approach to check if the user has permission to need a resource or not. It can represent that what data and information one user can access.It is also called as AuthZ. The authorization generally works with authentication so that the system can understand who is accessing the information. Authorization is a security structure used to decide user/client privileges or access levels associated with system resources, such as computer programs, files, services, data and application features.Authorization is generally preceded by authentication for customer identity verification. System administrators ...
Read MoreWhat are the types of Cryptosystems in information security?
There are various types of cryptosystem which are as follows −Private Key cryptosystems − Symmetric encryption is also known as private-key encryption or secret-key encryption. It contains using the similar key for encryption and decryption. Encryption contains using an operation (an algorithm) to the data to be encrypted using the private key to create them meaningless.The main disadvantage of a secret-key cryptosystem is associated to the exchange of keys. Symmetric encryption depends on the swap of a secret (keys).Public-key cryptosystems − Public-key cryptosystems is also known as asymmetric cryptography. It is a type of cryptographic algorithms which needed two separate ...
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