Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Safe & Security Articles
Page 49 of 88
What are the types of Encryption in Information Security?
Encryption is a procedure of coding data which can be a file or mail message into cipher text a form unreadable without a decoding key in order to avoid anyone except the pre-determined receiver from reading that information.Decryption is the reverse procedure of transforming encrypted data to its original unencoded form, plaintext. A key in cryptography is a large order of bits used by encryption/ decryption algorithms.In encryption, it is based on the type of encryption, information can be displayed as several numbers, letters, or symbols. Those who work in cryptography fields create it their job, to encrypt data or ...
Read MoreWhat are the advantage and disadvantage of DES?
Data Encryption Standard (DES) is the block cipher which creates a fixed-length string of plaintext bits and change it through a sequence of complicated operations into another cipher text bit string of the similar length. It is a symmetric encryption technique which defines both sender and receiver need a shared key to encrypt and decrypt the information.The problem of this approach is that if the key is known to others the complete conversation is negotiated. The 3DES block size is 64 bits and also need a key to customize the conversion, so that decryption can only be implemented by those ...
Read MoreWhat is suspicious email detection in Information Security?
Suspicious email detection is a type of mailing system where suspicious users are recognized by deciding the keywords used by him. The suspicious keywords are discovered in the mails which are sent by the user. All the blocked mails are tested by the management and recognize the users who have sent such mails.Suspicious mail detection is a type of system by which suspected users are identified by recognizing the types of words. Words can be as hijacking, explosion which can be discovered in their mails which they send to others. These type of mails are tested by the admin and ...
Read MoreWhat are the modules of Triple DES Algorithm?
Triple DES Algorithm used by admin to encode the messages sent to the users or sent some warnings about the different user’s suspicious event. In this research, suspicious words dictionary can be used to find the suspicious words which are not generally used in the normal messaging or communication.There are some modules of Triple DES which are as follows −Admin Login − In this project, admin can get in the username and password to validate himself to access the account panel modules.User Login − In this module, users can get in their username and password to authenticate themselves to access ...
Read MoreWhat is Triple DES?
Triple DES is also called a TDES. It is a symmetric key block cipher, defining that the same key can be used to encrypt and decrypt information in fixed-length set of bits known as blocks. It is known as "Triple DES" because it uses the DES cipher three times when encrypting data.When DES was originally invented in 1976, it need a key size of 56 bits, which was an adequate level of security to oppose brute-force attacks. Because then, computers have become economical and more strong, allowing the 3DES algorithm to use DES three times successively, essentially stopping brute-force on ...
Read MoreHow does the meet in middle attack work on Double DES?
The Double DES uses two example of DES cipher for encryption and two units of reverse DES cipher for decryption. Each unit of DES cipher needs multiple key for encryption which enhance the size of the key (112 bit) creating it more secure. But in the double DES can be destroyed by known plaintext attack known as meet-in-themiddle attack.Given a plaintext P and two encryption keys K1 and K2, ciphertext C is produced as C = Ek2(Ek1, (m)) decryption needed that the keys be used in reverse order −P = Dk1(Dk2, (C))A Meet-in-the-Middle (MitM) Attack is a type of cryptanalytic ...
Read MoreWhat are the design issues of DES?
Data Encryption Standard (DES) is a block cipher algorithm that takes plain text in blocks of 64 bits and transform them to ciphertext utilizing keys of 48 bits. It is a symmetric key algorithm. It can define that the same key can be used for encrypting and decrypting data.The design of DES was invented by IBM in 1994. There are some tests on DES have proved that it satisfies some of the required element as claimed. There are some design issued which are as follows −S-Boxes − S-Boxes is a procedure that accepts the 48-bit input from the XOR operation ...
Read MoreWhat are the Properties of Data Encryption Standard?
DES is a block cipher. The encryption procedure is create of two permutations (Pboxes) that it can be defined initial and final permutations, and 16 Feistel rounds. Each round need a different 48-bit round key created from the cipher key according to a pre-represented algorithm. The DES function uses a 48-bit key to the rightmost 32 bits (RI−1) to create a 32-bit output.There are two properties of DES which are as follows −Avalanche EffectAvalanche effect defines a small change in the plaintext (or key) should make an important change in the ciphertext. It can change in one bit of plaintext ...
Read MoreWhat are the Variations of DES?
There are two main variations of Data Encryption Standard are as follows −Double DES − Double DES is an encryption approach which need two instance of DES on same plain text. In both instances it uses multiple keys to encrypt the plain text. Both keys are needed at the time of decryption.The 64 bit plain text goes into first DES instance which than transformed into a 64 bit middle text utilizing the first key and thus it goes to second DES instance which provides 64 bit cipher text by utilizing second key.Double DES is easy as it does that normal ...
Read MoreWhat are the elements of DES?
There are various elements of DES which are as follows −Use of S-Boxes − The tables used for substitution i.e., the S-boxes, in DES are kept hidden by IBM. IBM supports that it took them over 17 person years to appear up with the internal design of the S-boxes.Key Length − Cryptographic system has two important elements including the cryptographic algorithm and the key. The inner operating of the DES algorithm are completely popular to the general public. Hence, the strength of the DES lies only in the other element including its key, which should be secret.Differential Cryptanalysis − Differential ...
Read More