Method and system for rapidly scanning files

摘要

The present embodiments provide a method and system for rapidly scanning a file, wherein the method includes 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. By using the data packet, when a new user performs a first scanning, a file with identical characteristic information as that in the data packet can be skipped, which can reduce the time for the first scanning.

主权项

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.