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1. 发明授权

US6070174A Method and apparatus for real-time secure file deletion 失效
标题翻译：用于实时安全文件删除的方法和装置
公开(公告)号：US6070174A
公开(公告)日：2000-05-30
申请号：US114756
申请日：1998-07-13
申请人： Robert Phillip Starek , George Friedman , David Earl Marshall , Jason Lee Chambers , Michael J. Moorman , Terry S. Newgard
发明人： Robert Phillip Starek , George Friedman , David Earl Marshall , Jason Lee Chambers , Michael J. Moorman , Terry S. Newgard
IPC分类号： G06F17/30
CPC分类号： G06F17/30117 , G06F2221/2143 , Y10S707/99953 , Y10S707/99957
摘要： A method and apparatus are provided that enhance file system calls to a file system structure of an operating system. In particular, file system calls can be enhanced to provide real-time secure file deletion on an ongoing basis. A file system call that is intended to perform a function with respect to data stored on a storage device is intercepted. It is then determined whether the file system call is of a type that should be processed. If not, the original file system call is passed on through the file system. If the file system call should be processed, supplemental processing is performed to enhance the original file system call and the file system call is transparently returned to the calling system application. In embodiment, real-time secure file deletion is implemented using a vendor supplied driver (VSD) executing within the installable file system (IFS) of WINDOWS 95. Further, a method and system are disclosed for real-time secure data deletion in a system having an NTFS file system. Read calls are monitored using a read filter and pointers to NTFS metafiles and page files are recognized and stored. Write calls are monitored using a write filter and real-time secure data deletion of buffers is performed. File creation operations are monitored and real-time secure data deletion of user files is performed when the file is to be overwritten. Further, set information operations are monitored and real-time secure data deletion is performed for truncated, shrunk or deleted user files.
摘要翻译：提供了一种增强对操作系统的文件系统结构的文件系统调用的方法和装置。特别地，可以增强文件系统调用以持续提供实时安全文件删除。用于执行关于存储在存储设备上的数据的功能的文件系统调用被截取。然后确定文件系统调用是否是应该被处理的类型。如果没有，原始文件系统调用将通过文件系统传递。如果要处理文件系统调用，则执行补充处理以增强原始文件系统调用，并且将文件系统调用透明地返回给调用系统应用程序。在实施例中，使用在WINDOWS 95的可安装文件系统（IFS）内执行的供应商提供的驱动程序（VSD）实现实时安全文件删除。此外，公开了一种用于系统中的实时安全数据删除的方法和系统具有NTFS文件系统。使用读取过滤器监视读取调用，并指向NTFS元文件，并识别和存储页面文件。使用写入过滤器监视写入呼叫，并执行缓冲区的实时安全数据删除。监视文件创建操作，并在文件被覆盖时执行用户文件的实时安全数据删除。此外，监视设置信息操作，并对被截断，缩小或删除的用户文件执行实时安全数据删除。

2. 发明授权

US06314437B1 Method and apparatus for real-time secure file deletion 失效
标题翻译：用于实时安全文件删除的方法和装置
公开(公告)号：US06314437B1
公开(公告)日：2001-11-06
申请号：US09576518
申请日：2000-05-23
申请人： Robert Phillip Starek , George Friedman , David Earl Marshall , Jason Lee Chambers , Michael J. Moorman , Terry S. Newgard
发明人： Robert Phillip Starek , George Friedman , David Earl Marshall , Jason Lee Chambers , Michael J. Moorman , Terry S. Newgard
IPC分类号： G06F1730
CPC分类号： G06F17/30117 , G06F2221/2143 , Y10S707/99953 , Y10S707/99957
摘要： A method and apparatus are provided that enhance file system calls to a file system structure of an operating system. In particular, file system calls can be enhanced to provide real-time secure file deletion on an ongoing basis. A file system call that is intended to perform a function with respect to data stored on a storage device is intercepted. It is then determined whether the file system call is of a type that should be processed. If not, the original file system call is passed on through the file system. If the file system call should be processed, supplemental processing is performed to enhance the original file system call and the file system call is transparently returned to the calling system application. In embodiment, real-time secure file deletion is implemented using a vendor supplied driver (VSD) executing within the installable file system (IFS) of WINDOWS 95. Further, a method and system are disclosed for real-time secure data deletion in a system having an NTFS file system. Read calls are monitored using a read filter and pointers to NTFS metafiles and page files are recognized and stored. Write calls are monitored using a write filter and real-time secure data deletion of buffers is performed. File creation operations are monitored and real-time secure data deletion of user files is performed when the file is to be overwritten. Further, set information operations are monitored and real-time secure data deletion is performed for truncated, shrunk or deleted user files.
摘要翻译：提供了一种增强对操作系统的文件系统结构的文件系统调用的方法和装置。特别地，可以增强文件系统调用以持续提供实时安全文件删除。用于执行关于存储在存储设备上的数据的功能的文件系统调用被截取。然后确定文件系统调用是否是应该被处理的类型。如果没有，原始文件系统调用将通过文件系统传递。如果要处理文件系统调用，则执行补充处理以增强原始文件系统调用，并且将文件系统调用透明地返回给调用系统应用程序。在实施例中，使用在WINDOWS 95的可安装文件系统（IFS）内执行的供应商提供的驱动程序（VSD）来实现实时安全文件删除。此外，公开了一种用于系统中的实时安全数据删除的方法和系统具有NTFS文件系统。使用读取过滤器监视读取调用，并指向NTFS元文件，并识别和存储页面文件。使用写入过滤器监视写入呼叫，并执行缓冲区的实时安全数据删除。监视文件创建操作，并在文件被覆盖时执行用户文件的实时安全数据删除。此外，监视设置信息操作，并对被截断，缩小或删除的用户文件执行实时安全数据删除。

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