See thermodynamic temperature.

A spurious pattern or other distortion in a facsimile record copy caused by unwanted modulation products arising from the transmission of a carrier signal, and appearing in the form of a rectified baseband that interferes with the lower sideband of the carrier.
Note: The Kendall effect occurs principally when the single-sideband width is greater than half of the facsimile carrier… (Read More →)

Synonym E region.

An early generation protocol [a file-transfer and terminal-emulation program] developed for transfer of asynchronous data files, designed to help minimize the effects of interference and noise on analog telephone circuits.

A module of a program that forms a logical entity or performs a unit function.
Note: The most vulnerable portion of code in a secure operating system is a special case of a kernel.

The creation of birefringence in a liquid that is not otherwise birefringent, by subjecting the liquid to an electric field.
Note 1: The degree of birefringence, which is manifested as a difference in refractive indices for light of orthogonal linear polarizations, one of which is parallel to the induced optical axis, is directly proportional to the square of the applied… (Read More →)

1. Information (usually a sequence of random or pseudorandom binary digits) used initially to set up and periodically change the operations performed in crypto-equipment for the purpose of encrypting or decrypting electronic data, for determining electronic counter-countermeasures patterns (e.g., frequency hopping or spread spectrum ), or for producing other key.
Note: "Key" has replaced the terms "variable," "key(ing) variable," and… (Read More →)

1. A key establishment protocol whose secret key is a function of information contributed by two or more participants, so that no party can predetermine the value of the key. [After X9.42]
2. A method for negotiating a key value on-line without transferring the key, even in an encrypted form, e.g., the Diffie-Hellman technique. [After X.509]

The assurance of the legitimate participants in a key agreement that no other entity possesses the shared-secret key. [After X9.42]

An assemblage of two keys that are considered logically to be one key, in that one key alone cannot be manipulated. [After X9.65]