# Definitions for ciphersci·phers

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1. ciphers

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. Codes generally substitute different length strings of characters in the output, while ciphers generally substitute the same number of characters as are input. There are exceptions and some cipher systems may use slightly more, or fewer, characters when output versus the number that were input. Codes operated by substituting according to a large codebook which linked a random string of characters or numbers to a word or phrase. For example, "UQJHSE" could be the code for "Proceed to the following coordinates." When using a cipher the original information is known as plaintext, and the encrypted form as ciphertext. The ciphertext message contains all the information of the plaintext message, but is not in a format readable by a human or computer without the proper mechanism to decrypt it. The operation of a cipher usually depends on a piece of auxiliary information, called a key (or, in traditional NSA parlance, a cryptovariable). The encrypting procedure is varied depending on the key, which changes the detailed operation of the algorithm. A key must be selected before using a cipher to encrypt a message. Without knowledge of the key, it should be extremely difficult, if not impossible, to decrypt the resulting ciphertext into readable plaintext. Most modern ciphers can be categorized in several ways By whether they work on blocks of symbols usually of a fixed size (block ciphers), or on a continuous stream of symbols (stream ciphers). By whether the same key is used for both encryption and decryption (symmetric key algorithms), or if a different key is used for each (asymmetric key algorithms). If the algorithm is symmetric, the key must be known to the recipient and sender and to no one else. If the algorithm is an asymmetric one, the enciphering key is different from, but closely related to, the deciphering key. If one key cannot be deduced from the other, the asymmetric key algorithm has the public/private key property and one of the keys may be made public without loss of confidentiality.

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1. Ciphers

Ciphers is an ambient music album by SETI which was released in 1996. It is Ysatis and Deupree's last release under the SETI moniker. This album also features trip-hop and jazz influences, as found in their contemporary Futique releases.

1. spheric

### Numerology

1. Chaldean Numerology

The numerical value of ciphers in Chaldean Numerology is: 9

2. Pythagorean Numerology

The numerical value of ciphers in Pythagorean Numerology is: 6

### Examples of ciphers in a Sentence

1. History is a living horse laughing at a wooden horse. History is a wind blowing where it listeth. History is no sure thing to bet on. History is a box of tricks with a lost key. History is a labyrinth of doors with sliding panels, a book of ciphers with the code in a cave of the Saragossa sea. History says, if it pleases, Excuse me, I beg your pardon, it will never happen again if I can help it.

### Popularity rank by frequency of use

ciphers#10000#52829#100000

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