Cryptography

Cryptography claims its roots from the latin root of kryptos, which means hidden secret, and graphein, which means writing. According to Dictionary.com, "Cryptography is the science or study of techniques of secret writing and message hiding." In today 's fast paced and tech savvy world, it isn 't strange to have at least a fleeting knowledge of cryptology and encryption specifically but this relatively young science and field of engineering has very deep roots. The generally agreed upon first example of cryptography at work occurred nearly four thousand years ago and is found in the ancient tomb of the Egyptian pharaoh Khnumhotep, where "...[the scribe] uses some unusual hieroglyphic symbols here and there in place of more ordinary ones." (Kahn 71) While it 's believed that the anonymous scribe responsible for the hieroglyphics wasn 't doing so to deliberately obfuscate his message as there was "no fully developed code of hieroglyphic substitution" according to Kahn. However, his actions, perhaps intended to add dignity to the carvings, had another effect - an essential ingredient of cryptography, the deliberate transformation of a message.…

The word cryptography can be split into pieces in order to better understand the word. The first part of the word cryptography, Crypto-, means “concealed, secret, hidden.” Graphy-, derived from the Greek word graphikos, means “of or for writing, belonging to drawing, picturesque.” (Online Etymology Dictionary) Put together, the word cryptography means “the process of writing or reading secret messages or codes” (Merriam-Webster Dictionary, ). In contrast, encryption simply means to perform any…

could first communicate. Cryptography is the way we can transmit secret messages so that only the person it is meant for can understand it. The art of coding and decoding messages has progressed immensely through time, and has become increasingly difficult to break with the use of technology. Cryptography’s evolution has transformed the computing world into what it is today, and this comes with positive and negative effects. As long as people have secrets and want to transmit them, cryptography…

Cryptography is a science or art that protects data and information from unwanted intruders through transforming the information to a format that is unreadable. The people with the required authentication are the only ones can read or return the data to original form. It is a system dependant mainly on the usage of a key and the main basic principle of network security. Cryptography involves plain text, which is the text that someone will type in a form that is understandable to the human. This…

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…

Since the dawn of sending and receiving messages, people have had a need for keeping the information they send out to remain private and out of the hands of others. This need for security is the reason the field of cryptography was developed, from its early stages of moving letters around in words to the present use of computer programming to keep certain data safe. Cryptography is the reason we can securely use many day to day applications, but with all these developments come issues of…

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…

Symmetric Cryptography In every work station, there is a key which encrypts the data whenever shared it over the internet to another work station. Sender encrypts the data and sends it to another computer. Receiver decrypts the code with the same key. The main problem here is not with the data, but with the distribution of key. There are some problems with key sharing. In case you 're ready to give that key safely, Will the key can keep the full data safely? Each individual whom need to have…

1.1 Overview Cryptography is the science/practice of “writing in secret” (“crypto”= “secret, “graphy” = “writing”). Cryptographic functions are generally defined as algorithms or protocols, rules that govern how data is processed to turn plaintext (unencrypted data) into cipher text (encrypted data) [1]. Cryptography is a method of storing and transmitting data in a form that only those it is intended for can read and process. It is considered a science of protecting information by…

What is Cryptography? When a message is encoded so it becomes unreadable while making sure only the intended receiver is capable of decoding it back into its original form is what we commonly known as Cryptography. It is done by means of an encryption and decryption algorithm (often the same implemented in reverse order) and very often using a secret key. Some of the early cryptographic systems kept the algorithm itself secret and did not use a key (Stallings, 2014). Only when using a secret key…