Method and apparatus for real-time secure file deletion
July 13, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethods and apparatus for decontaminating hash tables Secure file erasure Method for automatic memory reclamation for object-oriented systems with real-time constraints System and method for providing compatibility between distributed file system namespaces and operating system pathname syntax Method and system of converting data from a source file system to a target file system Coherent film system access during defragmentation operations on a storage medium Method and computer program product to reuse directory search handles Method for eliminating file fragmentation and reducing average seek times in a magnetic disk media environment File allocation tables with holes Method and apparatus using slack area of file storage structures for file reconstruction Inventors
AssigneeApplicationNo. 114756 filed on 07/13/1998US Classes:707/206, Garbage collection707/200, FILE OR DATABASE MAINTENANCE707/205File allocationExaminersPrimary: Fetting, Anton W.Assistant: Robinson, Greta Attorney, Agent or FirmInternational ClassG06F 017/30AbstractA 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.Other References
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