cipher

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CIPHER. An arithmetical character, used for numerical notation. Vide Figures, and 13 Vin. Ab. 210; 18 Eng. C. L. R. 95; 1 Ch. Cr. Law, 176.
     2. By cipher is also understood a mode of secret writing. Public ministers and other public agents frequently use ciphers in their correspondence, and it is sometimes very useful so to correspond in times of war. A key is given to each minister before his departure, namely, the cipher for writing ciphers, (chiffre chiffrant,) and the cipher for deciphering (chiffre dechiffrant.) Besides these, it is usual to give him a common cipher, (chiffre banal,) which is known to all the ministers of the same power, who occasionally use it in their correspondence with each other.
     3. When it is suspected that, a cipher becomes known to the cabinet where the minister is residing, recourse is had to a preconcerted sign in order to annul, entirely or in part, what has been written in cipher, or rather to indicate that the contents are to be understood in an inverted or contrary sense. A cipher of reserve is also employed in extraordinary cases.

References in classic literature ?
"There is a certain fate hanging over Milly," said Kraft, "and if it overtakes her she is lost to Cypher's and to us."
"One day," concluded Kraft, solemnly, "there will come to Cypher's for a plate of beans a millionaire lumberman from Wisconsin, and he will marry Milly."
In Cypher's she belonged--in the bacon smoke, the cabbage perfume, the grand, Wagnerian chorus of hurled ironstone china and rattling casters.
And back to Cypher's went we three, and, finding customers scarce, we joined hands and did an Indian dance with Milly in the centre.
And about that time a little luck descended upon us three, and we were enabled to buy costlier and less wholesome food than Cypher's.
John Walker, Cyphers CEO and co-founder said, At Cypher, we have spent the past three years perfecting a new method for achieving breakthrough voice isolation performance in noisy environments.
Nothing about Josh Cyphers fits the profile of a typical college football recruit.