公开(公告)号：US20140310322A1

公开(公告)日：2014-10-16

申请号：US14314711

申请日：2014-06-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Linghong Ruan ,  Wu Jiang ,  Shiguang Li ,  Zhenhui Wang

IPC: G06F17/30

CPC classification number: G06F17/30115 ,  G06F17/3012

Abstract: A method and a system for identifying a file type. A modification interface may be provided so that a user inputs a file feature parameter, and the file feature parameter input by the user is added to a file type configuration file, then the file type configuration file is loaded to a state machine to perform file type identification. Therefore, the user can modify a file feature parameter in the original file type configuration file, and when a file feature parameter of a file of a certain type is changed or a file of a new type appears, the user can update a file feature parameter in the state machine in time to identify the changed file or the file of the new type. In this way, the user does not need to search for an identification tool on the Internet.

Abstract translation: 用于识别文件类型的方法和系统。 可以提供修改界面，使得用户输入文件特征参数，并且将由用户输入的文件特征参数添加到文件类型配置文件中，然后将文件类型配置文件加载到状态机以执行文件类型 识别。 因此，用户可以修改原始文件类型配置文件中的文件特征参数，并且当特定类型的文件的文件特征参数改变或新类型的文件出现时，用户可以更新文件特征参数 在状态机中及时识别已更改的文件或新文件的类型。 以这种方式，用户不需要在因特网上搜索识别工具。

公开(公告)号：US09405758B2

公开(公告)日：2016-08-02

申请号：US14314711

申请日：2014-06-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Linghong Ruan ,  Wu Jiang ,  Shiguang Li ,  Zhenhui Wang

IPC: G06F17/30

CPC classification number: G06F17/30115 ,  G06F17/3012

Abstract: A method and a system for identifying a file type. A modification interface may be provided so that a user inputs a file feature parameter, and the file feature parameter input by the user is added to a file type configuration file, then the file type configuration file is loaded to a state machine to perform file type identification. Therefore, the user can modify a file feature parameter in the original file type configuration file, and when a file feature parameter of a file of a certain type is changed or a file of a new type appears, the user can update a file feature parameter in the state machine in time to identify the changed file or the file of the new type. In this way, the user does not need to search for an identification tool on the Internet.

Abstract translation: 用于识别文件类型的方法和系统。 可以提供修改界面，使得用户输入文件特征参数，并且将由用户输入的文件特征参数添加到文件类型配置文件中，然后将文件类型配置文件加载到状态机以执行文件类型 识别。 因此，用户可以修改原始文件类型配置文件中的文件特征参数，并且当特定类型的文件的文件特征参数改变或新类型的文件出现时，用户可以更新文件特征参数 在状态机中及时识别已更改的文件或新文件的类型。 以这种方式，用户不需要在因特网上搜索识别工具。

公开(公告)号：US20140189879A1

公开(公告)日：2014-07-03

申请号：US14198326

申请日：2014-03-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Linghong Ruan ,  Wu Jiang ,  Shiguang Li ,  Zhenhui Wang

IPC: G06F21/60

CPC classification number: G06F21/60 ,  G06F21/64 ,  H04L63/0245 ,  H04L63/145 ,  H04L67/06

Abstract: A method for identifying a file type and an apparatus for identifying a file type, so as to solve a problem in the prior art that a file type cannot be effectively identified when a sender tampers with a file being transmitted. The method includes: acquiring, from a transmitted data packet, a file header of a file to be identified, and determining whether a magic number can be obtained from the file header; if the magic number can be obtained, searching for the file type that corresponds to the magic number; determining whether data of the file to be identified complies with a data structure feature of the file type; if yes, determining that a file type of the file to be identified is the file type that corresponds to the magic number; and if not, determining that a file type of the file is an abnormal type.

Abstract translation: 用于识别文件类型的方法和用于识别文件类型的装置，以便解决现有技术中当发送者篡改正在发送的文件时文件类型不能被有效识别的问题。 该方法包括：从发送的数据分组中获取要识别的文件的文件头，并且确定是否可以从文件头获取幻数; 如果可以获得魔法数，则搜索对应于魔数的文件类型; 确定要识别的文件的数据是否符合文件类型的数据结构特征; 如果是，确定要识别的文件的文件类型是对应于魔术数字的文件类型; 如果不是，则确定文件的文件类型是异常类型。