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Kryptos
''Kryptos'' is a sculpture by the United States, American artist Jim Sanborn located on the grounds of the Central Intelligence Agency (CIA) headquarters, the George Bush Center for Intelligence in Langley, Virginia. Since its dedication on November 3, 1990, there has been much speculation about the meaning of the four cryptography, encrypted messages it bears. Of these four messages, the first three have been solved, while the fourth message remains one of the most famous unsolved codes in the world. It is said that a fifth message will reveal itself after the first four are solved. The sculpture continues to be of interest to cryptanalysts, both amateur and professional, who are attempting to decode the fourth passage. The artist has so far given four clues to this passage. Description The sculpture comprises four large copper plates with other elements consisting of water, wood, plants, red and green granite, white quartz, and petrified wood. The most prominent feature of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jim Sanborn
Herbert James Sanborn, Jr. (born November 14, 1945) is an American List of sculptors, sculptor. He is best known for creating the encrypted ''Kryptos'' sculpture at Central Intelligence Agency, CIA headquarters in Langley, Virginia. Biography Sanborn was born in Washington, D.C.. His father was the head of exhibitions at the Library of Congress, and his mother was a concert pianist and photo researcher. He grew up in Alexandria, Virginia, Alexandria and Arlington, Virginia, attending Burgundy Farm Country Day School, followed by JEB Stuart High School—both in Fairfax County, Virginia, Fairfax County—and then attended Randolph-Macon College, receiving a degree in paleontology, fine arts, and social anthropology in 1968, followed by a Master of Fine Arts degree in sculpture from the Pratt Institute in 1971. He taught at Montgomery College in Rockville, Maryland, and then for nine years was the artist-in-residence at Glen Echo Park, Maryland, Glen Echo Park. Art Sanborn's artwo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Scheidt
Edward Michael Scheidt is a retired Chairman of the Central Intelligence Agency (CIA) Cryptographic Center and the designer of the cryptographic systems used in the ''Kryptos'' sculpture at CIA Headquarters in Langley, Virginia. Early life Scheidt was born July 20, 1939, in San Bernardino County. He graduated in 1957 from Cor Jesu High School in New Orleans and then joined the Army, where he worked in Signals Intelligence. CIA In 1963, he was hired as a communications officer for the CIA, in the Office of Communications, which began a 26-year career, after which he retired in December 1989. Scheidt spent 12 years posted overseas, including serving in Vientiane from 1963, Damascus and Tel Aviv from 1966 to 1968, Manila from 1971 to 1973, and Athens from 1978 to 1980. Most often he used one-time pad paper systems of encryption. Scheidt received a B.A. in business administration from the University of Maryland in 1970 and an M.S. in telecommunications from George Washington U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jim Gillogly
James J. Gillogly (born 5 March 1946) is an American computer scientist and cryptographer. Biography Early life His interest in cryptography stems from his boyhood, as did his interest in mathematics. By junior high he was inventing his own ciphers and challenging his father, entomologist Lorin Gillogly, to solve them. Gillogly wrote a chess-playing program in the Fortran programming language in 1970, and in 1977 he ported the code for " Colossal Cave" from Fortran to C. Education He graduated from Carnegie Mellon University in 1978, receiving a Ph.D. in computer science. He was advised by Allen Newell, with his dissertation titled "Performance Analysis of the Technology Chess Program". Career Gillogly worked as a computer scientist at RAND, specializing in system design and development, and computer security. He has written several articles about technology and cryptography, is currently the editor of the "Cipher Exchange" column for '' The Cryptogram'', and was president ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Bush Center For Intelligence
The George Bush Center for Intelligence is the headquarters of the Central Intelligence Agency (CIA), located in the unincorporated community of Langley in Fairfax County, Virginia, United States, near Washington, D.C. The headquarters is a conglomeration of the Original Headquarters Building (OHB) and the New Headquarters Building (NHB) and sits on a total of of land. It was the world's largest intelligence headquarters from 1959 until 2019, when it was surpassed by Germany's BND headquarters. Name Before its current name, the CIA headquarters was formally unnamed. On April 26, 1999, the complex was officially named in the Intelligence Authorization Act for Fiscal Year 1999 for George H. W. Bush, who had served as the Director of Central Intelligence for 357 days (between January 30, 1976, and January 20, 1977) and later as the 41st president of the United States. Colloquially, it is known by the metonym Langley. "The Farm" is not a reference to the center despite its add ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Intelligence Agency
The Central Intelligence Agency (CIA; ) is a civilian foreign intelligence service of the federal government of the United States tasked with advancing national security through collecting and analyzing intelligence from around the world and conducting covert operations. The agency is headquartered in the George Bush Center for Intelligence in Langley, Virginia, and is sometimes metonymously called "Langley". A major member of the United States Intelligence Community (IC), the CIA has reported to the director of national intelligence since 2004, and is focused on providing intelligence for the president and the Cabinet. The CIA is headed by a director and is divided into various directorates, including a Directorate of Analysis and Directorate of Operations. Unlike the Federal Bureau of Investigation (FBI), the CIA has no law enforcement function and focuses on intelligence gathering overseas, with only limited domestic intelligence collection. The CIA is responsibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Scientist
A computer scientist is a scientist who specializes in the academic study of computer science. Computer scientists typically work on the theoretical side of computation. Although computer scientists can also focus their work and research on specific areas (such as algorithm and data structure development and design, software engineering, information theory, database theory, theoretical computer science, numerical analysis, programming language theory, compiler, computer graphics, computer vision, robotics, computer architecture, operating system), their foundation is the theoretical study of computing from which these other fields derive. A primary goal of computer scientists is to develop or validate models, often mathematical, to describe the properties of computational systems (Processor (computing), processors, programs, computers interacting with people, computers interacting with other computers, etc.) with an overall objective of discovering designs that yield useful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William H
William is a masculine given name of Germanic origin. It became popular in England after the Norman conquest in 1066,All Things William"Meaning & Origin of the Name"/ref> and remained so throughout the Middle Ages and into the modern era. It is sometimes abbreviated "Wm." Shortened familiar versions in English include Will or Wil, Wills, Willy, Willie, Bill, Billie, and Billy. A common Irish form is Liam. Scottish diminutives include Wull, Willie or Wullie (as in Oor Wullie). Female forms include Willa, Willemina, Wilma and Wilhelmina. Etymology William is related to the German given name ''Wilhelm''. Both ultimately descend from Proto-Germanic ''*Wiljahelmaz'', with a direct cognate also in the Old Norse name ''Vilhjalmr'' and a West Germanic borrowing into Medieval Latin ''Willelmus''. The Proto-Germanic name is a compound of *''wiljô'' "will, wish, desire" and *''helmaz'' "helm, helmet".Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hill Cipher
In classical cryptography, the Hill cipher is a polygraphic substitution cipher based on linear algebra. Invented by Lester S. Hill in 1929, it was the first polygraphic cipher in which it was practical (though barely) to operate on more than three symbols at once. The following discussion assumes an elementary knowledge of matrices. Encryption Each letter is represented by a number modulo 26. Though this is not an essential feature of the cipher, this simple scheme is often used: To encrypt a message, each block of ''n'' letters (considered as an ''n''-component vector) is multiplied by an invertible ''n'' × ''n'' matrix, against modulus 26. To decrypt the message, each block is multiplied by the inverse of the matrix used for encryption. The matrix used for encryption is the cipher key, and it should be chosen randomly from the set of invertible ''n'' × ''n'' matrices (modulo 26). The cipher can, of course, be adapted to an alphabet with any number of lette ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vigenère Cipher
The Vigenère cipher () is a method of encryption, encrypting alphabetic text where each letter of the plaintext is encoded with a different Caesar cipher, whose increment is determined by the corresponding letter of another text, the key (cryptography), key. For example, if the plaintext is attacking tonight and the key is oculorhinolaryngology, then *the first letter of the plaintext, a, is shifted by 14 positions in the alphabet (because the first letter of the key, o, is the 14th letter of the alphabet, counting from zero), yielding o; *the second letter, t, is shifted by 2 (because the second letter of the key, c, is the 2nd letter of the alphabet, counting from zero) yielding v; *the third letter, t, is shifted by 20 (u), yielding n, with wrap-around; and so on. It is important to note that traditionally spaces and punctuation are removed prior to encryption and reintroduced afterwards. * In this example the tenth letter of the plaintext t is shifted by 14 position ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Key (cryptography)
A key in cryptography is a piece of information, usually a string of numbers or letters that are stored in a file, which, when processed through a cryptographic algorithm, can encode or decode cryptographic data. Based on the used method, the key can be different sizes and varieties, but in all cases, the strength of the encryption relies on the security of the key being maintained. A key's security strength is dependent on its algorithm, the size of the key, the generation of the key, and the process of key exchange. Scope The key is what is used to encrypt data from plaintext to ciphertext. There are different methods for utilizing keys and encryption. Symmetric cryptography Symmetric cryptography refers to the practice of the same key being used for both encryption and decryption. Asymmetric cryptography Asymmetric cryptography has separate keys for encrypting and decrypting. These keys are known as the public and private keys, respectively. Purpose Since the key ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subscript And Superscript
A subscript or superscript is a character (such as a number or letter) that is set slightly below or above the normal line of type, respectively. It is usually smaller than the rest of the text. Subscripts appear at or below the baseline, while superscripts are above. Subscripts and superscripts are perhaps most often used in formulas, mathematical expressions, and specifications of chemical compounds and isotopes, but have many other uses as well. In professional typography, subscript and superscript characters are not simply ordinary characters reduced in size; to keep them visually consistent with the rest of the font, typeface designers make them slightly heavier (i.e. medium or bold typography) than a reduced-size character would be. The vertical distance that sub- or superscripted text is moved from the original baseline varies by typeface and by use. In typesetting, such types are traditionally called " superior" and "inferior" letters, figures, etc., or just "superi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Greek
Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek Dark Ages, Dark Ages (), the Archaic Greece, Archaic or Homeric Greek, Homeric period (), and the Classical Greece, Classical period (). Ancient Greek was the language of Homer and of fifth-century Athens, fifth-century Athenian historians, playwrights, and Ancient Greek philosophy, philosophers. It has contributed many words to English vocabulary and has been a standard subject of study in educational institutions of the Western world since the Renaissance. This article primarily contains information about the Homeric Greek, Epic and Classical periods of the language, which are the best-attested periods and considered most typical of Ancient Greek. From the Hellenistic period (), Ancient Greek was followed by Koine Greek, which is regar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
