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Kryptos Tholoides
''Kryptos'' is a sculpture by the American artist Jim Sanborn located on the grounds of the Central Intelligence Agency (CIA) in Langley, Virginia. Since its dedication on November 3, 1990, there has been much speculation about the meaning of the four 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. The sculpture continues to be of interest to cryptanalysts, both amateur and professional, who are attempting to decipher the fourth passage. The artist has so far given four clues to this passage. Description The main part of the sculpture is located in the northwest corner of the New Headquarters Building courtyard, outside of the Agency's cafeteria. 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 is a large vertical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jim Sanborn
Jim or JIM may refer to: * Jim (given name), a given name * Jim, a diminutive form of the given name James * Jim, a short form of the given name Jimmy * OPCW-UN Joint Investigative Mechanism * ''Jim'' (comics), a series by Jim Woodring * ''Jim'' (album), by soul artist Jamie Lidell * Jim (''Huckleberry Finn''), a character in Mark Twain's novel * Jim (TV channel), in Finland * JIM (Flemish TV channel) * JIM suit, for atmospheric diving * Jim River, in North and South Dakota, United States * Jim, the nickname of Yelkanum Seclamatan Yelkanum Seclamatan ( ; Nooksack: ''Y'elʔqáy'nem Selh'émeten'' ; died April 1911), also known as Chief Jim, Indian Jim, Lynden Jim, or Squahalish Jim, was chief of the Nooksack Indians in the late 19th century. His first name has variously b ... (died April 1911), Native American chief * ''Journal of Internal Medicine'' * Juan Ignacio Martínez (born 1964), Spanish footballer, commonly known as JIM * Jim (horse), milk wagon horse used to produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reflecting Pool
A reflecting pool, also called a reflection pool, is a water feature found in gardens, parks, and memorial sites. It usually consists of a shallow pool of water, undisturbed by fountain jets, for a reflective surface. Design Reflecting pools are often designed with the outer basin floor at the rim slightly deeper than the central area to suppress wave formation. They can be as small as a bird bath to as large as a major civic element. Their origins are from ancient Persian gardens. List of notable pools * The Miroir d'eau (Water mirror) on Place de la Bourse in Bordeaux, France, is the world's largest reflecting pool. * The Mughal garden reflecting pools at the Taj Mahal in Agra, India * Chehel Sotoun in Iran * The Lincoln Memorial Reflecting Pool and Capitol Reflecting Pool, in Washington, D.C. * Mary Gibbs and Jesse H. Jones Reflection Pool, Hermann Park, Houston, Texas, U.S. * The modernist Palácio do Planalto and Palácio da Alvorada in Brasília, Brazil * Martin Luther Kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Baltimore Sun
''The Baltimore Sun'' is the largest general-circulation daily newspaper based in the U.S. state of Maryland and provides coverage of local and regional news, events, issues, people, and industries. Founded in 1837, it is currently owned by Tribune Publishing. The ''Baltimore Sun's'' parent company, '' Tribune Publishing'', was acquired by Alden Global Capital, which operates its media properties through Digital First Media, in May 2021. History ''The Sun'' was founded on May 17, 1837, by printer/editor/publisher/owner Arunah Shepherdson Abell (often listed as "A. S. Abell") and two associates, William Moseley Swain, and Azariah H. Simmons, recently from Philadelphia, where they had started and published the '' Public Ledger'' the year before. Abell was born in Rhode Island, became a journalist with the ''Providence Patriot'' and later worked with newspapers in New York City and Boston.Van Doren, Charles and Robert McKendry, ed., ''Webster's American Biographies''. (Springfiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Security Agency
The National Security Agency (NSA) is a national-level intelligence agency of the United States Department of Defense, under the authority of the Director of National Intelligence (DNI). The NSA is responsible for global monitoring, collection, and processing of information and data for foreign and domestic intelligence and counterintelligence purposes, specializing in a discipline known as signals intelligence (SIGINT). The NSA is also tasked with the protection of U.S. communications networks and information systems. The NSA relies on a variety of measures to accomplish its mission, the majority of which are clandestine. The existence of the NSA was not revealed until 1975. The NSA has roughly 32,000 employees. Originating as a unit to decipher coded communications in World War II, it was officially formed as the NSA by President Harry S. Truman in 1952. Between then and the end of the Cold War, it became the largest of the U.S. intelligence organizations in terms of pers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Studies In Intelligence
''Studies in Intelligence'' is a quarterly peer-reviewed academic journal on intelligence that is published by the Center for the Study of Intelligence, a group within the United States Central Intelligence Agency. It contains both classified and unclassified articles on the methodology and history of the field of intelligence gathering. The journal was established by Sherman Kent in 1955. According to Kent, intelligence "has developed a recognized methodology; it has developed a vocabulary; it has developed a body of theory and doctrine; it has elaborate and refined techniques. It now has a large professional following. What it lacks is a literature.... The most important service that such a literature performs is the permanent recording of our new ideas and experiences." Copies of unclassified and declassified articles from ''Studies in Intelligence'' are held at the National Archives' College Park, Maryland College Park is a city in Prince George's County, Maryland, United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital media, digital subscribers. It also is a producer of popular podcasts such as ''The Daily (podcast), The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones (publisher), George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won List of Pulitzer Prizes awarded to The New York Times, 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national "newspaper of record". For print it is ranked List of newspapers by circulation, 18th in the world by circulation and List of newspapers in the United States, 3rd in the U.S. The paper is owned by the New York Times Company, which is Public company, publicly traded. It has been governed by the Sulzberger family since 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Scientist
A computer scientist is a person who is trained in the academic study of computer science. Computer scientists typically work on the theoretical side of computation, as opposed to the hardware side on which computer engineers mainly focus (although there is overlap). 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, computational complexity theory, numerical analysis, programming language theory, computer graphics, and computer vision), 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 (processors, programs, computers interacting with people, computers interacting with other computers, etc.) with an overall objective of discovering des ... [...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 of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William H
William is a male given name of Germanic origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conquest of England 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, Wills, Willy, Willie, Bill, and Billy. A common Irish form is Liam. Scottish diminutives include Wull, Willie or Wullie (as in Oor Wullie or the play ''Douglas''). Female forms are Willa, Willemina, Wilma and Wilhelmina. Etymology William is related to the given name ''Wilhelm'' (cf. Proto-Germanic ᚹᛁᛚᛃᚨᚺᛖᛚᛗᚨᛉ, ''*Wiljahelmaz'' > German ''Wilhelm'' and Old Norse ᚢᛁᛚᛋᛅᚼᛅᛚᛘᛅᛋ, ''Vilhjálmr''). By regular sound changes, the native, inherited English form of the name shoul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ed 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 Santa Monica, California United States. 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, retiring in December 1989. Scheidt spent 12 years posted overseas, including serving in Laos in the early 1960s, Lebanon in the late 1960s, and a tour in Southeast Asia. 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 a degree in telecommunications from George Washington University in 1975. Scheidt is best know ... [...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 letters; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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