Invention Grant
- Patent Title: Using digital certificates in document distribution
- Patent Title (中): 在文件分发中使用数字证书
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Application No.: US13229463Application Date: 2011-09-09
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Publication No.: US08688997B2Publication Date: 2014-04-01
- Inventor: Sujata Das , Sunil C. Agrawal , Charles R. Myers, IV
- Applicant: Sujata Das , Sunil C. Agrawal , Charles R. Myers, IV
- Applicant Address: US CA San Jose
- Assignee: Adobe Systems Incorporated
- Current Assignee: Adobe Systems Incorporated
- Current Assignee Address: US CA San Jose
- Agency: Wolfe-SBMC
- Main IPC: H04L9/32
- IPC: H04L9/32

Abstract:
One embodiment of the present invention provides a system that uses digital certificates to facilitate enforcing licensing terms for applications that manipulate documents. During operation, the system obtains a credential, wherein the credential includes a private key and a digital certificate containing a corresponding public key. This digital certificate also contains a profile specifying allowed operations which can be performed on documents signed with the credential. Next, the system digitally signs a document using the credential, so that the resulting signed document is signed with the private key and includes a copy of the digital certificate with the profile specifying the allowed operations. The certificate issuer can subsequently revoke the digital certificate (which effectively revokes the license) if teens of a license agreement associated with the digital certificate are violated.
Public/Granted literature
- US20130124869A1 Using Digital Certificates in Document Distribution Public/Granted day:2013-05-16
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