History of cryptography
The results of the simulation serial hybrid vehicle analysis overpacks with materials and radioactive waste from the decommissioning of the West in terms of traffic load batch electrical and thermal analysis based varistors metal oxide Line Follower - line following robot Mechanical vibration - Chapter 1: Introduction
Cryptology and its history are an important area of human cognition in terms of security, confidentiality and secrecy. The aim from the beginning to protect confidential data from unauthorized access. Today, cryptology is part of everyday life.
In my work, I will discuss the history of cryptology, cryptography from an early age (Egypt, Mesopotamia), through ancient Greece. The first part defines the basic concepts, then around major methods in the history of cryptography, which were historic breakthrough in cryptology, explain the origins princípu substitution, transposition, polyalphabetic ciphers, the first mechanical and electronic encryption machines until after the beginning of the era of computers.
Cryptology The word comes from the Greek words [kryptós], which means to hide and [graph], which means to write. Today, cryptology is considered part of mathematics and computer columbus nebraska obituaries science, and it is associated to computer science, computer security, columbus nebraska obituaries and computer engineering.
It is indispensable in the fields of life where it is necessary to somehow conceal the communication from a third party. In the past, cryptology was associated particularly with the war period, but it is now associated with everyday life (ATM security, computer password, communication on the Internet, etc.). Cryptology is divided into cryptography, cryptanalysis and steganography. [6]
The nature of substitution ciphers is that each character of the original columbus nebraska obituaries unencrypted message is replaced by some other character. This article will set out some important representatives of substitution cipher in terms of history.
While substitution encryption method is based on replacing characters with other characters, transposition is flipping columbus nebraska obituaries characters columbus nebraska obituaries of text. Each character retains its form, but changed its position. As a given transposition takes place depends on the encryption algorithm. There are a number of simple transposition ciphers, but there are also resistant to commonly used ciphers today. This article will set out some important representatives of the transposition cipher in terms of history.
There are many ciphers which imply characteristics of substitution and transposition. Such hybrid ciphers are designed to combine the advantages of both methods and thus increase the security of the algorithm. Examples of such ciphers. ADFGVX cipher, DES and AES [4].
Table of Mesopotamia around r. 1500 BC contained an encrypted formula for the production of glazing ceramics. Used substitution cipher used letters for letters that have the same sound value in different words.
Hebrews circa 600-500 BC used a simple substitution cipher atbaš reverse. This encryption method is first replaced with the last letter of the alphabet, the second penultimate etc. and vice versa. Atbaš name is derived from the fact that the first letter of the Hebrew alphabet columbus nebraska obituaries "Aleph" is replaced with the last letter "tav" columbus nebraska obituaries second "bet" columbus nebraska obituaries is replaced by the penultimate "sin." Manifestations columbus nebraska obituaries of this encryption can also be found in the Old Testament. In Hebrew literature, known like the other two substitutions: albam and atbah.
In Sparta in ancient Greece around the year. 500 BC used the first known mechanical device to encrypt - rendered. The encryptor has shaped wooden cylinder, to which the stripe columbus nebraska obituaries for stripe next to each wound strip of papyrus, parchment or leather. The report is printed by direction from one end of the cylinder to the other, until it fills the entire papyrus. Then strip unwound. The report made no sense to him, unless the recipient nenamotala the same rough cylinder, because the letters were messed up (transposed) [7].
The Caesar columbus nebraska obituaries cipher each letter columbus nebraska obituaries is replaced by the letter that lies in alphabetical order, followed by three letters. At that time it was practically indecipherable cipher, simple and effective until it is not disclosed columbus nebraska obituaries Cicero, who went to the camp of Caesar's opponents.
Leon Battista Alberti - also referred to as the father of Western Cryptology. Was broadly educated person, is known as the author of the first textbook columbus nebraska obituaries cryptanalysis. Alberti's 25-page paper is the first work written in Western Europe dedicated to cryptanalysis. The work includes interpretation lúštiteľských procedures based on language skills, sorting systems, encryption of substitution and transposition, polyalphabetic columbus nebraska obituaries substitution discovery and encryption codes.
Alberti disk was originally a mechanical device to implement Caesar columbus nebraska obituaries ciphers. It consisted of two rotating discs representing open and encrypted characters with their rotation simulated polyalphabetic substitution [1, 109].
Later, this system is improved so that the encryption of messages used by a number of such shifts. Any change to improved initial capital letter. A much stronger version of the m
The results of the simulation serial hybrid vehicle analysis overpacks with materials and radioactive waste from the decommissioning of the West in terms of traffic load batch electrical and thermal analysis based varistors metal oxide Line Follower - line following robot Mechanical vibration - Chapter 1: Introduction
Cryptology and its history are an important area of human cognition in terms of security, confidentiality and secrecy. The aim from the beginning to protect confidential data from unauthorized access. Today, cryptology is part of everyday life.
In my work, I will discuss the history of cryptology, cryptography from an early age (Egypt, Mesopotamia), through ancient Greece. The first part defines the basic concepts, then around major methods in the history of cryptography, which were historic breakthrough in cryptology, explain the origins princípu substitution, transposition, polyalphabetic ciphers, the first mechanical and electronic encryption machines until after the beginning of the era of computers.
Cryptology The word comes from the Greek words [kryptós], which means to hide and [graph], which means to write. Today, cryptology is considered part of mathematics and computer columbus nebraska obituaries science, and it is associated to computer science, computer security, columbus nebraska obituaries and computer engineering.
It is indispensable in the fields of life where it is necessary to somehow conceal the communication from a third party. In the past, cryptology was associated particularly with the war period, but it is now associated with everyday life (ATM security, computer password, communication on the Internet, etc.). Cryptology is divided into cryptography, cryptanalysis and steganography. [6]
The nature of substitution ciphers is that each character of the original columbus nebraska obituaries unencrypted message is replaced by some other character. This article will set out some important representatives of substitution cipher in terms of history.
While substitution encryption method is based on replacing characters with other characters, transposition is flipping columbus nebraska obituaries characters columbus nebraska obituaries of text. Each character retains its form, but changed its position. As a given transposition takes place depends on the encryption algorithm. There are a number of simple transposition ciphers, but there are also resistant to commonly used ciphers today. This article will set out some important representatives of the transposition cipher in terms of history.
There are many ciphers which imply characteristics of substitution and transposition. Such hybrid ciphers are designed to combine the advantages of both methods and thus increase the security of the algorithm. Examples of such ciphers. ADFGVX cipher, DES and AES [4].
Table of Mesopotamia around r. 1500 BC contained an encrypted formula for the production of glazing ceramics. Used substitution cipher used letters for letters that have the same sound value in different words.
Hebrews circa 600-500 BC used a simple substitution cipher atbaš reverse. This encryption method is first replaced with the last letter of the alphabet, the second penultimate etc. and vice versa. Atbaš name is derived from the fact that the first letter of the Hebrew alphabet columbus nebraska obituaries "Aleph" is replaced with the last letter "tav" columbus nebraska obituaries second "bet" columbus nebraska obituaries is replaced by the penultimate "sin." Manifestations columbus nebraska obituaries of this encryption can also be found in the Old Testament. In Hebrew literature, known like the other two substitutions: albam and atbah.
In Sparta in ancient Greece around the year. 500 BC used the first known mechanical device to encrypt - rendered. The encryptor has shaped wooden cylinder, to which the stripe columbus nebraska obituaries for stripe next to each wound strip of papyrus, parchment or leather. The report is printed by direction from one end of the cylinder to the other, until it fills the entire papyrus. Then strip unwound. The report made no sense to him, unless the recipient nenamotala the same rough cylinder, because the letters were messed up (transposed) [7].
The Caesar columbus nebraska obituaries cipher each letter columbus nebraska obituaries is replaced by the letter that lies in alphabetical order, followed by three letters. At that time it was practically indecipherable cipher, simple and effective until it is not disclosed columbus nebraska obituaries Cicero, who went to the camp of Caesar's opponents.
Leon Battista Alberti - also referred to as the father of Western Cryptology. Was broadly educated person, is known as the author of the first textbook columbus nebraska obituaries cryptanalysis. Alberti's 25-page paper is the first work written in Western Europe dedicated to cryptanalysis. The work includes interpretation lúštiteľských procedures based on language skills, sorting systems, encryption of substitution and transposition, polyalphabetic columbus nebraska obituaries substitution discovery and encryption codes.
Alberti disk was originally a mechanical device to implement Caesar columbus nebraska obituaries ciphers. It consisted of two rotating discs representing open and encrypted characters with their rotation simulated polyalphabetic substitution [1, 109].
Later, this system is improved so that the encryption of messages used by a number of such shifts. Any change to improved initial capital letter. A much stronger version of the m
No comments:
Post a Comment