Public-key cryptography

1) Eavesdropping: It can be defined as secretly listening to the private conversation of others without their consent. Here an attacker can choose to passively eavesdrop on the network communication and steal the data. Through passive eavesdropping attackers apparently eliminate their presence in the network and make such attacks difficult to detect. The goal of such an attack is to violate the confidentiality of the communications by intercepting the network and sniffing or listening to…

Codenamed Ultra by the British military intelligence because of its highest security classification. Many people that signed on to be apart of Ultra had to sign the Official Secret Acts and were told that they were going to be breaking German encrypted messages. The job of the people involved were to break high-level encrypted messages sent through the German military, using the Enigma as a form of communication during World War II. In order to accomplish the utmost important task of cracking…

Cryptography is the study and practice of secret writing and communication. It could also be said to be art and as such provide the keys and locks of the Information Age. Secret writing developed into two different branches. One of them is steganography, derived from Greek words meaning “covered” and “to write”. Cryptography was created in parallel to this. It originates from the Greek word of kryptos meaning “hidden”. Whereas in steganography the purpose is to hide a message, so that it cannot…

No one has direct control And no one can deny or froze funds. the blockchain is a public ledger of all transactions that have ever occurred in the protocol since its creation. this works by bundling new transactions into blocks and attaching them to older blocks and…

Renowned computer scientists and historians alike have hailed Alan Turing as the “father of the modern computer.” This is no small claim if one considers the tremendous impact computers have on humanity. Innovations like the internet and email have massive effects on everyday life in the modern world, from every call made from a cell phone, to every pixel of data seen on a high-definition television screen, computation of one kind or another is involved in some way. There are countless worthy…

I felt a little awkward playing this gig. There I was, a white teenager, playing bass with a band of professional black jazz musicians. Needless to say, I stood out a bit. Afterward, the drummer approached me, curious to know who my teacher was because he was impressed with my ability. The compliment surprised me, but I shocked him more so by informing him that I was completely self-taught! Throughout my life, self-learning has played an important role in a variety of areas. I was nine when…

might be easier to modify and misuse the significant data by hacking. There are many approaches to transfer the data securely to the destination without any modifications like cryptography and steganography. The project report is focused on image steganography, also the various security problems; overall overview of cryptography, steganography and digital watermarking approaches. Furthermore, the project includes in-depth debate of various steganography algorithms such as Least…

Another high level of security must be banking employees’ information (this includes: customer name, date of birth, social security number, etc.). In order to keep the data secure, we must secure the database. To properly secure that database, there are key areas that should be considered: Users and roles, Default account, Patching, Password Management, Parameter settings, Privileges and permissions, Profiles and…

the rotor order, starting position, and plugboard settings. This would take an extremely long amount of time (especially since German changed the code daily), and the men at Bletchley Park discovered two German weaknesses to narrow down the possible key settings and find the correct one faster. The first was that the internal wirings of the enigma…

Password strength Password complexity policies are designed to deter brute force attacks by increasing the number of possible passwords. When password complexity policy is enforced, new passwords must meet the following guidelines: • The password does not contain a dictionary word or the account name of the user or company. • The password is at least eight (8) characters long and can be up to 128 characters long. • The password contains characters from three of the following four categories: o…