Events
Apr 8, 3 PM - May 28, 7 AM
Sharpen your AI skills and enter the sweepstakes to win a free Certification exam
Register now!Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The MsiFileHash table is used to store a 128-bit hash of a source file provided by the Windows Installer package. The hash is split into four 32-bit values and stored in separate columns of the table.
Windows Installer can use file hashing as a means to detect and eliminate unnecessary file copying. A file hash stored in the MsiFileHash table may be compared to a hash of an existing file on the user's computer obtained by calling MsiGetFileHash. The MsiFileHash table can only be used with unversioned files.
The MsiFileHash table has the following columns.
| Column | Type | Key | Nullable |
|---|---|---|---|
| File_ | Identifier | Y | N |
| Options | Integer | N | N |
| HashPart1 | DoubleInteger | N | N |
| HashPart2 | DoubleInteger | N | N |
| HashPart3 | DoubleInteger | N | N |
| Hashpart4 | DoubleInteger | N | N |
-
File_
-
Foreign key to File table. 72 char string.
-
Options
-
This column must be 0 and is reserved for future use.
-
HashPart1
-
First 32 bits of hash. The file hash entered in this field must be obtained by calling MsiGetFileHash or the FileHash method. Do not use other methods.
-
HashPart2
-
Second 32 bits of hash. The file hash entered in this field must be obtained by calling MsiGetFileHash or the FileHash method. Do not use other hashing methods.
-
HashPart3
-
Third 32 bits of hash. The file hash entered in this field must be obtained by calling MsiGetFileHash or the FileHash method. Do not use other methods.
-
HashPart4
-
Fourth 32 bits of hash. The file hash entered in this field must be obtained by calling MsiGetFileHash or the FileHash method. Do not use other methods.