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:
Nov. 11, 2003
Filed:
Apr. 24, 1998
Akikazu Takeuchi, Tokyo, JP;
Shinji Nanba, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In an information processing apparatus and method, an application program that was encrypted using secret key-A is supplied to a decoding section , and publicized key-B and an encrypted publicized key-A (corresponding to secret key-A) that was encrypted by using secret key-B corresponding to publicized key-B are supplied to a decoding section . The decoding section decodes the encrypted publicized key-A by using publicized key-B and supplies a resulting publicized key-A to the decoding section . The decoding section decodes the encrypted application program by using publicized key that is supplied from the decoding section and supplies Java byte codes as a decoding result to a Java virtual machine . The Java virtual machine interprets and executes the Java byte codes that are supplied from the decoding section . As a result, it becomes possible to allow only programs developed by a legitimate software developer to be executed in certain program execution environments.