| 摘要 |
A method and system are disclosed for generating and using a virus-free file certificate. The method, for use in a virus-free certificate authority ( 102 ), includes the steps of: receiving ( 300 ) a virus-free certificate request for a file from a server ( 101 ) or a client ( 100 ) system; determining ( 301 ) whether the file is virus-free or not; if the file is declared virus-free by the virus-free certificate authority ( 102 ): generating ( 303, 304 ) a virus-free certificate ( 200 ) including a file signature ( 207 ) for certifying that said file is declared virus-free by the virus-free certificate authority ( 102 ); sending ( 306 ) back in response to the virus-free certificate request the virus-free certificate ( 200 ). The method, for use in a server ( 101 ) or client ( 100 ) system, includes the steps of: determining ( 400 ) whether a virus-free certificate ( 200 ) is associated with a file; if a virus-free certificate is associated with the file: authenticating ( 404 ) the virus-free certificate ( 200 ), said virus-free certificate including a certificate signature ( 206 ); authenticating ( 407 ) the file, said virus-free certificate ( 200 ) including a file signature ( 207 ), said file signature certifying that said file has been declared virus-free by a virus-free certificate authority ( 102 ).
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