The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2006
Filed:
Jan. 16, 2001
Katsumi Marukawa, Sagamiko, JP;
Katsumi Marukawa, Sagamiko, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method and apparatus for secure data transmission via network. Transmission side transmits processed data (DB), second signed data (SB,) obtained by applying one-way function to merged data of the processed data (DB) and first signed data of an original image and ciphering the output of the one-way function with transmission side secret key, and ciphered signed data (SAE) obtained by ciphering the first signed data with reception side public key. Data reception side enciphers received ciphered signed data (SAE') with reception side secret key to obtain third signed data (SA′), applies one-way function to merged data (DC′) of received processed data (DB′) and the third signed data (SA′), enciphers received second signed data (SB′) with transmission side public key (KDB), compares result obtained by applying the one-way function to the merged data with result obtained by enciphering the second signed data for data valification.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile