Inventor
MIYAZAKI KUNIHIKO
JP24 patents
⚠️ This page may combine multiple inventors who share the name “MIYAZAKI KUNIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
21 patentsUS6873706B1Mar 29, 2005
Processing apparatus, program, or system of secret information
HITACHI LTD102 citations98
US7110545B2Sep 19, 2006
Method and apparatus for symmetric-key encryption
HITACHI LTD62 citations95
US7941667B2May 10, 2011
Electronic document authenticity guarantee method, and electronic document disclosure system
HITACHI LTD26 citations92
US7526645B2Apr 28, 2009
Electronic document authenticity assurance method and electronic document disclosure system
HITACHI LTD31 citations92
US7210043B2Apr 24, 2007
Trusted computer system
HITACHI LTD21 citations92
US7200682B2Apr 3, 2007
Time stamp generating system
HITACHI LTD21 citations92
US7134021B2Nov 7, 2006
Method and system for recovering the validity of cryptographically signed digital data
HITACHI LTD16 citations92
US7047407B2May 16, 2006
Network system enabling transmission control
HITACHI LTD35 citations92
US7305558B1Dec 4, 2007
Digital signing method
HITACHI LTD38 citations91
US6816969B2Nov 9, 2004
Digital signature generating method and digital signature verifying method
HITACHI LTD41 citations91
US7840487B2Nov 23, 2010
Digital content encryption and decryption method and workflow system using digital content
HITACHI LTD16 citations83
US7478432B2Jan 13, 2009
Method and system for contents control
HITACHI LTD16 citations83
US7441115B2Oct 21, 2008
Method for verifying a digital signature
HITACHI LTD12 citations82
US7206939B2Apr 17, 2007
File storage system and a NAS server
HITACHI LTD12 citations81
US7574605B2Aug 11, 2009
Method of managing digital signature, apparatus for processing digital signature, and a computer readable medium for recording program of managing digital signature
HITACHI LTD14 citations80
US7401225B2Jul 15, 2008
Method and apparatus for publishing signature log entry
HITACHI LTD16 citations79
US7694126B2Apr 6, 2010
Method and system for recovering the validity of cryptographically signed digital data
HITACHI LTD7 citations73
US7200232B2Apr 3, 2007
Method and apparatus for symmetric-key decryption
HITACHI LTD5 citations73
US7770009B2Aug 3, 2010
Digital signing method
HITACHI LTD6 citations72
US7359515B2Apr 15, 2008
Method and apparatus for symmetric-key decryption
HITACHI LTD2 citations62
US9419804B2Aug 16, 2016
Data authenticity assurance method, management computer, and storage medium
HITACHI LTD0 citations38