cipher it definition
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- The definition of a cipher is the symbol 0 meaning zero, or a secret code, something written in code, or a key used to figure out the meaning of something written in code. 1  The symbol 0 entered on a form to show a zero quantity is an example of a cipher.
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Caesar cipher In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.
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language — cryptographer, cryptographist, n. — cryptographic, adj. 1. the study of, or the use of, methods and procedures for translating and interpreting codes and ciphers; cryptanalysis. 2. cryptography.
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- A stream cipher is a symmetric encryption algorithm. Stream ciphers can be designed to be exceptionally fast, much faster in fact than any block cipher (see Question 54). While block ciphers operate on large blocks of data, stream ciphers typically operate on smaller units of plaintext, usually bits.
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- 1 Align the back cover onto the top part of Droid Incredible 4G LTE by HTC. 2  Press the sides and the bottom part of the back cover down to lock the cover into place. Align the back cover onto the top part of Droid Incredible 4G LTE by HTC. 2  Press the sides and the bottom part of the back cover down to lock the cover into place.
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DEFINITION of 'Encryption' DEFINITION of 'Encryption'. Encryption is a means of securing data using a password (key). The encryption process is simple – data is secured by translating information using an algorithm and a binary key. When the data needs to be read back, the code is decrypted using either the same key or a different key depending on the type of encryption used.
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Encrypt Encrypt. The process of making data unreadable by other humans or computers for the purpose of preventing others from gaining access to its contents. Encrypted data is generated using an encryption program such as PGP, encryption machine, or a simple encryption key and appears as garbage until it is decrypted.To read or use the data, it must be decrypted, and only those who have the correct password or decryption key can make the data readable again.ncrypt. The process of making data unreadable by other humans or computers for the purpose of preventing others from gaining access to its contents. Encrypted data is generated using an encryption program such as PGP, encryption machine, or a simple encryption key and appears as garbage until it is decrypted.
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cipher cipher. n. 1. a method of secret writing using substitution or transposition of letters according to a key. 2. a secret message. 3. the key to a secret message. 4. (Mathematics) an obsolete name for zero 1. 5.
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- key·word. n. 1. A word that serves as a key to a code or cipher. 2. A significant or descriptive word. 3. A word used as a reference point for finding other words or information.ey·word. n. 1. A word that serves as a key to a code or cipher. 2. A significant or descriptive word. 3. A word used as a reference point for finding other words or information.
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Cipher Also includes runically unrelated blackletter writing style and pigpen cipher. In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code. In common parlance, 'cipher' is synonymous with 'code', as they are both a set of steps that encrypt a message; however, the concepts are distinct in cryptography, especially classical cryptography.
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- Encryption is the conversion of electronic data into another form, called ciphertext, which cannot be easily understood by anyone except authorized parties. Download “Taming the beast: Data protection in the digital age & beyond”.
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Symantec Endpoint Encryption Bottom Line CipherShed is a free, open-source program intended to be used to create encrypted files or to encrypt entire drives. This includes being able to encrypt thumb/flash drives and external removable (and back-up) hard disk drives (HDDs).
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cryptography (krip-tog′ră-fē) [ crypt- + -graphy] The science and techniques of concealing or disguising information through encoding and decoding. In the health professions cryptography is used to ensure the confidentiality of medical records.
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Cryptography Basics A cryptographic algorithm (also known as a cipher) is a step by step sequence of mathematical calculations used to encrypt and decrypt information. There are currently three different types of cryptographic algorithms; hashing algorithms, symmetric-key algorithms and asymmetric key algorithms.
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encryption encryption. The reversible transformation of data from the original (the plaintext) to a difficult-to-interpret format (the ciphertext) as a mechanism for protecting its confidentiality, integrity and sometimes its authenticity. Encryption uses an encryption algorithm and one or more encryption keys.
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ciphertext Definition. Encrypted text or message in its coded human unreadable form. Cypher text is the output of an encryption process, and the input of a decryption process. Its opposite is clear text.Written also as cyphertext.ncrypted text or message in its coded human unreadable form. Cypher text is the output of an encryption process, and the input of a decryption process. Its opposite is clear text.
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Pigpen cipher The pigpen cipher uses graphical symbols assigned according to a key similar to the above diagram. The pigpen cipher (alternately referred to as the masonic cipher, Freemason's cipher, Napoleon cipher, and tic-tac-toe cipher) is a geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid. The example key shows one way the letters can be assigned to the grid. 1 Security.
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- Email encryption is the process of converting plain text (the original message and attachments) to cipher text, and serves two functions: (1) maintain confidentiality (2) establish non-reputability – that is, the sender cannot disclaim the contents of the message.
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encryption Related Terms. Scrambling sensitive information so that it becomes unreadable to everyone except the intended recipient. Encryption is performed by hardware/software devices which use a series of mathematical operations (encryption algorithm) to generate encrypted data called cypher text. The recipient, who must have an 'electronic key' to decrypt the data, uses a similar device to convert cypher text back to its original (readable) form called clear text.
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Cryptography Symmetric-key cryptography refers to encryption methods in which both the sender and receiver share the same key (or, less commonly, in which their keys are different, but related in an easily computable way). This was the only kind of encryption publicly known until June 1976.
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- Enigma. The Enigma machine is a piece of spook hardware invented by a German and used by Britain's codebreakers as a way of deciphering German signals traffic during World War Two.hoto: A four-rotor German Enigma cipher machine made during WW2. This rare machine is thought to have been used in the post-war years for coding Swiss diplomatic traffic. (SSPL/Getty Images).
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encryption How encryption works. Data, often referred to as plaintext, is encrypted using an encryption algorithm and an encryption key. This process generates ciphertext that can only be viewed in its original form if decrypted with the correct key. Decryption is simply the inverse of encryption, following the same steps but reversing the order in which the keys are applied.
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Cryptography Cryptography or cryptology (from Greek κρυπτός kryptós, hidden, secret; and γράφειν graphein, to write, or -λογία-logia, study, respectively) is the practice and study of techniques for secure communication in the presence of third parties called adversaries.
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Data Encryption and Decryption Encryption is the process of translating plain text data (plaintext) into something that appears to be random and meaningless (ciphertext). Decryption is the process of converting ciphertext back to plaintext. To encrypt more than a small amount of data, symmetric encryption is used.
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Information Security The Enigma machine, a cryptographic toll introduced in 1944 & used in WW2, encrypted messages by replacing characters for plain text. Which type of cipher does the Enigma machine use? Substitution
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- Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content. Link to this page: <a href=http://medical-dictionary.thefreedictionary.com/cipher>cryptography</a>.