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Class Information
Number: 380/27
Name: Cryptography > Electric signal modification > Having mechanical control of signal encryption (e.g., cam) > By perforated record
Description: Subject matter which controls cryptographic signal modification in accordance with a pattern of openings along the length of an elongate web.










Patents under this class:

Patent Number Title Of Patent Date Issued
8627508 Cloud key directory for federating data exchanges Jan. 7, 2014
8532287 Information processing system and information processing method for use therewith, information processing apparatus and information processing method for use therewith, and program Sep. 10, 2013
8516255 Methods and apparatus for peer-to-peer transfer of secure data using near field communications Aug. 20, 2013
8347090 Encryption of identifiers in a communication system Jan. 1, 2013
8275127 Cryptographic processing apparatus, cryptographic processing method, and computer program therefor Sep. 25, 2012
8180048 Method and system for computational transformation May. 15, 2012
8005215 Table shuffle cipher system Aug. 23, 2011
7971785 Method for authenticating micro-processor cards, corresponding micro-processor card, card reader terminal and programs Jul. 5, 2011
7848513 Method for transmitting security context for handover in portable internet system Dec. 7, 2010
7844053 Microprocessor apparatus and method for performing block cipher cryptographic functions Nov. 30, 2010
7239709 Data recording/reproducing method, data recording/reproducing system, recording apparatus Jul. 3, 2007
7043645 Reproducing apparatus, recording apparatus and display apparatus May. 9, 2006
6587948 Recording apparatus, recording medium, playback apparatus, recording method and playback method Jul. 1, 2003
6125186 Encryption communication system using an agent and a storage medium for storing that agent Sep. 26, 2000
6041411 Method for defining and verifying user access rights to a computer information Mar. 21, 2000
4972475 Authenticating pseudo-random code and apparatus Nov. 20, 1990
4591704 Data scrambling system and method May. 27, 1986
4217469 Coding and decoding apparatus for the protection of communication secrecy Aug. 12, 1980
4125744 Communication system Nov. 14, 1978











 
 
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