Patent ID: 9355250
Filing Date: 2016-05-31
CPC Classification: G06F,H04L

Claim Text:
1. A method for rapidly scanning a file comprising: obtaining a data packet, the data packet comprising secure file characteristic information for determining whether a file in a system is a secure file; and scanning file characteristic information of files in the system one by one, if the currently scanned file characteristic information matches secure file characteristic information in the data packet identifying a file as a secure file, skipping an anti-virus scanning for the current file, and continuing to scan a next file; wherein, the secure file characteristic information is obtained by collecting statistics of characteristic information of secure files sent to a processing center server by individual clients, which comprises: fully scanning a file, when the scanned file is secure, obtaining the characteristic information of the file, which characteristic information comprises the file name, file size, file modification time and file content description information; performing a cyclical redundancy check computation on the file name to get a file name CRC value; performing a message digest algorithm computation on the file content description information to get content matching information; obtaining the characteristic information of the secure file comprising the file size, file modification time, file name CRC value and content matching information: for identical characteristic information, counting a number of repetitions; and extracting characteristic information with the number of repetitions greater than or no less than a number threshold.