Cryptographic hash function

186). This method of changing the original text into a secret message is called encryption and retrieving back to the original form is called decryption. The clear plaintext is given as input to the cryptographic algorithm. According to Stallings cryptographic algorithms consists of mathematical functions which are used to encrypt and decrypt the data (44). A key is a mathematical value which

Running Head: Cryptography 1 Cryptography 12 Applied Cryptography Rough Draft ISSC 431 Professor Christopher Weppler October 6, 2015 Introduction Over the years, cryptography has been used to protect secrets, in a military capacity to make sure that either hackers, enemies of the countries, do not intercept sensitive formation. Ciphers, and encryption blocks are becoming so hard to break even the best super computers cannot break the codes in a timely fashion. Encryption

With the emergence of rapid growth in technology in our society today, there is an enormous amount of data that is being stored. However, an important question to ask is how is sensitive or important data being protected. One popular method that is currently used for protecting data is through encryption, which is “the process of converting data to an unrecognizable or ‘encrypted’ form.” 1 This process ensures that only authorized individuals have access to the confidential encrypted message. Encryption

free on arrival, a non-cryptographic checksum algorithm is typically used [1]. These algorithms are generally effective at detecting noise but cannot reliably detect changes by malicious parties. An example of non-cryptographic checksum

Introduction I thought of writing a paper on Bitcoin because this is a very interesting topic and everyone tries to get into it, I will try to make this topic understandable by writing it in laymen’s language. Thanks to Professor Dr. Burnham who has given me this opportunity to write a paper on Bitcoin. According to the name of Bitcoin when we first hear this word “Bitcoin” we create image in our mind that there would be some coin kind of thing but there is no coin it is only a digital currency.

Simple Symmetric Protocol Alice may choose to use the simple symmetric protocol. It requires that Alice and Bob establish a secret key with which the location can be encrypted. The two need to somehow agree upon the secret key in a secure manner- like in a private conversation, for example. The steps to accommodate a secure exchange using a simple symmetric system would be: 1. Alice would type the witness ' location into a simple text file using an editor. 2. Alice would use the Rijndael cipher from

The initial one time password can be generated using an algorithm called OCRA (OATH challenge-response algorithm). OCRA is a challenge-response algorithm developed by Open Authentication (OATH) which generates a value, i.e. password with variable data input and not just incremented counter values. The variable input is a random number from the server. It is generalization of HOTP (HMAC one time password) algorithm. OCRA can be defined as: OCRA = CryptoFunction(K, DataInput) Where, K is the key shared

Bitcoin is a new form of currency that is entirely digital with no central authority. It can be traded anywhere; it is accepted for all sorts of goods and services. There are online market places and exchanges to allow you to exchange Bitcoin for USD or other currencies. But with an entirely digital nature comes the potential for a very risky business. The currency, sites, and transactions all have the possibility of being hacked. Theft is still likely to occur with digital currencies. The way transactions

There are many popular authentication protocol schemes and some of them are as follows. Lightweight Dynamic User Authentication Scheme – In Wireless Sensor Networks the authorized users can access and communicate with the sensor nodes. This scheme comprises of registration, login and authentication phases. Based on the predefined period the user registers and gets access to secure data and restarts if period expires. It states it is secure only against replay and forgery attacks. And provides many

surplus assets.Net banking refers to the system that enables bank customers to access accounts and general information on bank products and services through personal computer(PC) or other intelligent devices and it also performs virtual banking functions. Bank’s first aim is to achieve the trust of customers then customers report their personal details ,Security of the customers is the prime concern of the banks and it has its own measures to secure client details and transactions i.e; both online