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Class 380 :: CRYPTOGRAPHY

Definition

SUBJECT MATTER UNDER THIS CLASS:This class includes equipment and processes which

(a) conceal or obscure intelligible information by transforming such information so as to make the information unintelligible to a casual or unauthorized recipient, or

(b) extract intelligible information from such a concealed representation, including breaking of unknown codes and messages.

(1) Note. Cryptographic processing may include, e.g., scrambling or masking or their complementary transformations.

(2) Note. All electrical communications equipment which processes an information signal for purposes of concealment are classified in this class.

(3) Note. Processing or converting of a signal for purposes of handling or transmission which may incidentally render a signal unintelligible are not classified in this class.

(4) Note. Mere blocking of access to the information is not considered a cryptographic transformation of the signal or information.

(5) Note. A cryptogram or a cryptographic record absent a separate encrypting or decrypting device is classified elsewhere. See References to Other Classes, below.

(6) Note. Excluded herein is nominal cryptography in combination with subject matter of another class. Such subject matter is classified with the other class. See search notes below.

(7) Note. Excluded herein is subject matter of this class in combination with the specific environments of a) business data processing or b) electrical computer or digital processing system support. Such subject matter is classified elsewhere in the classes providing for the specific environment. See search notes below.

(8) Note. During the latest reclassification project, a group of existing subclasses were repositioned as is pending additional reclassification of this class. However, screening was not done within this group of subclasses or between this group and the other subclasses not part of the latest project. This should be taken into consideration when determining an appropriate field of search.

Subclasses List