unbreakable cipher

unbreakable cipher

[¦ən′brāk·ə·bəl ′sī·fər]
(communications)
A cipher for which the message or key cannot be obtained through cryptanalysis, even with an unlimited amount of computational power, data storage, and calendar time.
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References in periodicals archive ?
The new cryptography concept creates absolutely unbreakable ciphers allowing software to be absolutely secure for the Internet, networks, and telephone lines.