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Overview
TurboSFV provides shell extension handlers, which extend the Shell with additional functions. The extensions are integrated into the shell in a way, that they can be directly called from within the Windows Explorer. Along with the 32-bit version, there is a 64-bit variant which supports the Shell under Windows 64-bit.
Context menu
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The context menu handler provides menu entries, if a shell object is right-clicked. It allows the user to validate a hash file or to calculate checksums for a file, a folder or a drive from within the Shell.
Snapshot
The calculated checksums are saved in hash files with the following file extensions:
blk BLAKE2S-256, BLAKE2B-256, BLAKE2B-384 and BLAKE2B-512.
md5 MD5
sfv CRC-32
sh1 SHA-1
sh2 SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224 and SHA-512/256.
sh3 SHA3-224, SHA3-256, SHA3-384 and SHA3-512.
xxh XXH32, XXH64.
These hash files can be later on used for validating hash values:
Snapshot
Infotip for a hash file
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The infotip handler provides information for a hash file. A text box appears, when the user selects or moves the mouse pointer over a hash file.
Snapshot
The displayed information varies, depending on the used version of TurboSFV and on how much information is available or could be examined within a reasonable time. The infotip provides a quick overview about the content of a hash file.
Hash file property sheet
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This property sheet handler displays detailed information about one or more hash files. The sheet is integrated as a page in the file properties, which can be selected in the context menu of a hash file.
Snapshot
With the start button, the analysis can be started. The stop button cancels a running analysis. The results for previously analyzed hash files are saved until a new analysis is started. The results can be copied to the clipboard.
Options:
Availability Examines, how many files listed in the hash file, actually do exist.
New files Searches for new files, which arrived after the creation of the hash file.
Use filter The file filter will be applied while searching for new files.
Search recursive Include sub folders, while searching for new files.
Smaller hash files on fixed drives are analyzed automatically. The group view can be en- or disabled. Another option allows to show or hide the column headers in the list control.
File property sheet for the calculation of hash values on the fly
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This property sheet handler allows the creation of hash values for one or more files on the fly, without the need to create a hash file. One or more hash types can be selected and the results can be copied to the clipboard.
Similar to the context menu, all supported hash functions are available on this sheet: CRC-32, MD5, SHA-1, XXH32, XXH64, SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256, BLAKE2S-256, BLAKE2B-256, BLAKE2B-384, BLAKE2B-512, SHA3-224, SHA3-256, SHA3-384 and SHA3-512.
Snapshot
Time intensive calculations can be paused and continued without loosing the intermediate results. Previously calculated hash values are saved and displayed again by selecting a file from the list. The group view can be en- or disabled. Another option allows to show or hide the column headers in the list control.
If you have calculated hash values for two or more files, then the results will be auto-compared: In this case, there are three files listed in the combo box, the hash values for two files were calculated and they are all different. For a file comparison, the same hash types must be used.
Snapshot
It is also possible to add additional files to the combo box, for example files located on a different drive. Like you move files with the explorer, select the files, but drag and drop the files onto the property sheet page
 
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