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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 More
Text steganography is an approach of hiding secret text message within another text as a covering message or creating a cover message associated to the initial secret message.Text steganography can include anything from transforming the formatting of an existing text, to changing words within a text, to producing random character sequences or utilizing context-free grammars to make readable texts.Text steganography is held to be the trickiest because of deficiency of redundant data which is present in image, audio or a video file. The mechanism of text documents is identical with what it can identify, while in another types of documents ... Read More
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 More
Steganography is an approach that facilitates concealing of a message that is to be kept secret inside other message. This result is the concealment of the secret message itself.Steganography approach can be used to images, a video file or an audio file. Generally, however, steganography is written in characters such as hash marking, but its usage inside images is also common. At any rate, steganography secure from pirating possess materials as well as aiding in unauthorized viewing.One use of steganography such as watermarking which hides copyright data within a watermark by overlaying documents not simply detected by the naked eye. ... Read More
Cryptanalysis is the decryption and inquiry of codes, ciphers or encrypted text. Cryptanalysis need numerical rule to search for algorithm susceptibility and divide into cryptography or information security systems.The main objective of cryptanalysis is to discover weaknesses in or otherwise defeat encryption algorithms. This research can be used by cryptographers to enhance and strengthen or else restore irreparably flawed algorithms.These type of attack exploits the nature of the algorithm to acquire the plaintext or the key being utilized from the encrypted message.Cryptanalysis generally require a direct examination of the cryptosystem in place, frequently an advanced focused mathematical effort at decryption ... Read More
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 More
There are various security services which are as follows −Message Confidentiality − The principle of confidentiality defines that only the sender and the intended recipient should be capable to create the element of the message. It protects the transmitted data from passive attack.Confidentiality can be used at several levels on the basis of content of an information to be transmitted. There are the following types of confidentiality which are as follows −Connection Confidentiality − The protection of all user information on a connection.Connectionless Confidentiality − The security of all user data in an individual data block.Traffic-flow Confidentiality − The protection ... Read More
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 More
A Feistel cipher is a cryptographic approach used in the construction of block cipherbased algorithms and structure. A Feistel network implements a sequence of iterative ciphers on a block of information and is frequently designed for block ciphers that encrypt huge quantities of data.A Feistel network operates by splitting the data block into two same pieces and using encryption in multiple rounds. Each round implements permutation and sequence derived from the primary function or key. The number of rounds change for each cipher that implements a Feistel network.A Feistel cipher is a multi-round cipher that divides the current private state ... Read More
Stream CipherA stream cipher is one that encrypts a digital data flow one bit or one byte at a time. Stream Cipher generally encrypts one byte of the message at that moment rather than using blocks.For example, classical stream ciphers are the auto crucial Vigenère cipher and the Vernam cipher. In the conceptual case, a one-time pad version of the Vernam cipher can be used, in which the key stream is considering the plaintext bit stream.If the cryptographic key stream is arbitrary, therefore this cipher is unbreakable by some different means other than realizing the key stream. However, the key ... Read More