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Polygraphia (book)
''Polygraphia'' is a cryptography, cryptographic work written by Johannes Trithemius published in 1518 dedicated to the art of steganography. The full title is [Six books of polygraphy, by Johannes Trithemius, abbot at Würzburg, formerly at Spanheim, for the Emperor Maximilian I, Holy Roman Emperor, Maximilian ]. It is the oldest known source of the popular Theban alphabet, Witches' Alphabet, used at large by Wicca, modern traditions of witchcraft.Heinrich Cornelius Agrippa (1531). ''Three Books of Occult Philosophy''. Review It is composed of six books and a Key (cryptography), decrypytion key * Book I contains no fewer than 384 alphabets (called "minutiae" by the author) of 24 letters (or "degrees"): each letter corresponds to a Latin word (noun, verb, adjective, etc.) in reference to Christian prayers and religious texts, being in total 9,216 different words. This is nowadays known as the cipher, which mostly uses only a few of the first alphabets. * Book II contains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theban Alphabet
The Theban alphabet, also known as the witches' alphabet, is a writing system, specifically a substitution cipher of the Latin script, that was used by early modern occultists and is popular in the Wicca movement. Publication history It was first published in Johannes Trithemius's Polygraphia_(book), ''Polygraphia'' (1518) in which it was attributed to Honorius of Thebes "as Pietro d'Abano testifies in his greater fourth book". However, it is not known to be extant in any of the known writings attributed to D'Abano (1250–1316). Trithemius' student Heinrich Cornelius Agrippa (1486–1535) included it in his ''Three Books of Occult Philosophy, De Occulta Philosophia'' (Book III, chap. 29, 1533). It is also not known to be found in any manuscripts of the writings of Honorius of Thebes (e.g. ''Liber Iuratus Honorii'', translated as ''The Sworn Book of Honorius''), with the exception of the composite manuscript found in London, British Library Manuscript Sloane 3853, which however ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Trithemius
Johannes Trithemius (; 1 February 1462 – 13 December 1516), born Johann Heidenberg, was a German Benedictine abbot and a polymath who was active in the German Renaissance as a Lexicography, lexicographer, chronicler, Cryptography, cryptographer, and occultist. He is considered the founder of modern cryptography (a claim shared with Leon Battista Alberti) and steganography, as well as the founder of bibliography and literary studies as branches of knowledge. He had considerable influence on the development of Early modern period, early modern and modern occultism. His students included Heinrich Cornelius Agrippa and Paracelsus. Early life The Epithet, byname ''Trithemius'' refers to his native town of Trittenheim on the Moselle (river), Moselle River, at the time part of the Electorate of Trier. When Johannes was still an infant his father, Johann von Heidenburg, died. His stepfather, whom his mother Elisabeth married seven years later, was hostile to education and thus Johann ... [...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] |
1518 Books
__NOTOC__ Year 1518 ( MDXVIII) was a common year starting on Friday of the Julian calendar. Within much of Christian Europe, New Year's Day was celebrated on January 1, the rule in the Roman Empire since 45 BC, and in 1518, the year ran from January 1, 1518 to December 31, 1518. In England (until 1752) and Scandinavia, the year ran from the Feast of the Annunciation (March 25, 1518) to March 24, 1519; and in France (funtil 1565) from Easter Sunday (April 4, 1518) to April 23, 1519. For instance, the will of Leonardo da Vinci, drafted in Amboise on 23 April 1519, shows the legend "Given on the 23rd of April 1518, before Easter".* See Wikisource " 1911 Encyclopædia Britannica/Easter". Events January–March * January 25 – Piri Mehmed Pasha is appointed as the new Grand Vizier of the Ottoman Empire by the Sultan Selim I, replacing Yunus Pasha, who was executed four months earlier on September 13. * January 27 – Sir John Ernley is selected as the new Chief ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Edition
The bibliographical definition of an edition is all copies of a book printed from substantially the same setting of type, including all minor typographical variants. First edition According to the definition of ''edition'' above, a book printed today, by the same publisher, and from the same type as when it was first published, is still the ''first edition'' of that book to a bibliographer. However, book collectors generally use the term ''first edition'' to mean specifically the first print run of the first edition (aka "first edition, first impression"). Since World War II, books often include a number line ( printer's key) that indicates the print run. A "first edition" per se is not a valuable collectible book. A popular work may be published and reprinted over time by many publishers, and in a variety of formats. There will be a first edition of each, which the publisher may cite on the copyright page, such as: "First mass market paperback edition". The first edition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Library Of Congress
The Library of Congress (LOC) is a research library in Washington, D.C., serving as the library and research service for the United States Congress and the ''de facto'' national library of the United States. It also administers Copyright law of the United States, copyright law through the United States Copyright Office, and it houses the Congressional Research Service. Founded in 1800, the Library of Congress is the oldest Cultural policy of the United States, federal cultural institution in the United States. It is housed in three buildings on Capitol Hill, adjacent to the United States Capitol, along with the National Audio-Visual Conservation Center in Culpeper, Virginia, and additional storage facilities at Fort Meade, Fort George G. Meade and Cabin Branch in Hyattsville, Maryland. The library's functions are overseen by the librarian of Congress, and its buildings are maintained by the architect of the Capitol. The LOC is one of the List of largest libraries, largest libra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygraphia Nova
''Polygraphia nova et universalis ex combinatoria arte directa'' is a 1663 work by the Jesuit scholar Athanasius Kircher. It was one of Kircher's most highly regarded works and his only complete work on the subject of cryptography, although he made passing references to the topic elsewhere. The book was distributed as a private gift to selected European rulers, some of who also received an ''arca steganographica'', a presentation chest containing wooden tallies used to encrypt and decrypt codes. Background Kircher reported that the origin of the work was a request from Holy Roman Emperor Ferdinand III to develop "a kind of lingua universalis" which would allow written communication between all peoples. The Emperor knew of the earlier secret communication system developed by Johannes Trithemius in his 1518 work '' Polygraphia'', dedicated to the art of steganography, and wanted to know if such a system could be used to bridge different languages. Systems of cryptography had been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Cryptography
Cryptography, the use of codes and ciphers, began thousands of years ago. Until recent decades, it has been the story of what might be called classical cryptography — that is, of methods of encryption that use pen and paper, or perhaps simple mechanical aids. In the early 20th century, the invention of complex mechanical and electromechanical machines, such as the Enigma rotor machine, provided more sophisticated and efficient means of encryption; and the subsequent introduction of electronics and computing has allowed elaborate schemes of still greater complexity, most of which are entirely unsuited to pen and paper. The development of cryptography has been paralleled by the development of cryptanalysis — the "breaking" of codes and ciphers. The discovery and application, early on, of frequency analysis to the reading of encrypted communications has, on occasion, altered the course of history. Thus the Zimmermann Telegram triggered the United States' entry into World War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steganographia
''Steganographia'' is a book on steganography, written in c. 1499 by the German Benedictine abbot and polymath Johannes Trithemius. General Trithemius' most famous work, ''Steganographia'' (written c.1499; published Frankfurt, 1606), was placed on the ''Index Librorum Prohibitorum'' in 1609 and removed in 1900. This book is in three volumes, and appears to be about magic—specifically, about using spirits to communicate over long distances. However, since the publication of a decryption key to the first two volumes in 1606, they were discovered to be actually concerned with cryptography and steganography. Until 1996, the third volume was widely believed to be solely about magic, but the "magical" formulas have now been shown to be covertexts for yet more material on cryptography. Reception References within the third book to magical works by such figures as Agrippa and John Dee still lend credence to the idea of a mystic-magical foundation of the third volume. Additionally, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hash Table
In computer science, a hash table is a data structure that implements an associative array, also called a dictionary or simply map; an associative array is an abstract data type that maps Unique key, keys to Value (computer science), values. A hash table uses a hash function to compute an ''index'', also called a ''hash code'', into an array of ''buckets'' or ''slots'', from which the desired value can be found. During lookup, the key is hashed and the resulting hash indicates where the corresponding value is stored. A map implemented by a hash table is called a hash map. Most hash table designs employ an Perfect hash function, imperfect hash function. Hash collision, Hash collisions, where the hash function generates the same index for more than one key, therefore typically must be accommodated in some way. In a well-dimensioned hash table, the average time complexity for each lookup is independent of the number of elements stored in the table. Many hash table designs also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three Books Of Occult Philosophy
''Three Books of Occult Philosophy'' (''De Occulta Philosophia libri III'') is Heinrich Cornelius Agrippa's study of occult philosophy, acknowledged as a significant contribution to the Renaissance philosophical discussion concerning the powers of magic, and its relationship with religion. The first book was printed in 1531 in Paris, Cologne, and Antwerp, while the full three volumes first appeared in Cologne in 1533. The three books deal with elemental, celestial and intellectual magic. The books outline the four elements, astrology, Kabbalah, numerology, angels, names of God, the virtues and relationships with each other as well as methods of utilizing these relationships and laws in medicine, scrying, alchemy, ceremonial magic, origins of what are from the Hebrew, Greek and Chaldean context. These arguments were common amongst other hermetic philosophers at the time and before. In fact, Agrippa's interpretation of magic is similar to the authors Marsilio Ficino Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theban Alphabet Trithemius 1518 .
{{Disambig ...
Theban can refer to: * A thing or person of or from the city of Thebes, Greece. * A thing or person of or from the city of Thebes, Egypt. * A player from the Caledonian Thebans RFC. * The occult Theban alphabet The Theban alphabet, also known as the witches' alphabet, is a writing system, specifically a substitution cipher of the Latin script, that was used by early modern occultists and is popular in the Wicca movement. Publication history It was f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
