Inventor
KURUMATANI HIROYUKI
JP10 patents
Patents
10 patentsUS6876745B1Apr 5, 2005
Method and apparatus for elliptic curve cryptography and recording medium therefore
HITACHI LTD105 citations97
US6341349B1Jan 22, 2002
Digital signature generating/verifying method and system using public key encryption
HITACHI LTD102 citations97
US6370247B1Apr 9, 2002
Hash value generating method and device, data encryption method and device, data decryption method and device
HITACHI LTD60 citations96
US6141421AOct 31, 2000
Method and apparatus for generating hash value
HITACHI LTD77 citations96
US6122375ASep 19, 2000
Hash value generating method and device, data encryption method and device, data decryption method and device
HITACHI LTD49 citations96
US7110545B2Sep 19, 2006
Method and apparatus for symmetric-key encryption
HITACHI LTD62 citations95
US6480606B1Nov 12, 2002
Elliptic curve encryption method and system
HITACHI LTD27 citations92
US6236729B1May 22, 2001
Key recovery method and system
HITACHI LTD28 citations92
US7200232B2Apr 3, 2007
Method and apparatus for symmetric-key decryption
HITACHI LTD5 citations73
US7359515B2Apr 15, 2008
Method and apparatus for symmetric-key decryption
HITACHI LTD2 citations62