| 摘要 |
A Digital Signature Extension provides a secure environment where digital signatures associated with the electronic documents can be verified. The Digital Signature Extension comprises: (1) cryptographic services for performing cryptographic operations on the digital signatures associated with the electronic documents, (2) one or more file-specific components for authenticating the digital signatures associated with the electronic documents, wherein the electronic documents are stored in a particular file format, and for interfacing to the cryptographic services, so that the cryptographic operations can be performed on the digital signatures, and (3) one or more applications for implementing logic for accessing the documents and for interfacing to the file-specific components, so that the file-specific components can authenticate the digital signatures.
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