SHA1 Generator is a free SHA1 checksum generation tool, can quickly generate SHA1 checksum of any files. It supports to copy and verify checksums, and also supports multi-file checksum calculation. This utility is a completely freeware, very simple and eay to use.
|Installation package||Freeware||Download (615kb)|
Export and Import
By using Export function and Import function, you can quickly track the changes of numerous files, you can save calculation results into a single file (default extension is ".sha1"), afterward, you can import this original file, and click "Generate" button to recalculate checksums of all files, if new checksum and old checksum are not equal, that file will be marked with color.
SHA is the Secure Hash Standard abbreviation, SHA algorithm family includes SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 (the last four are usually called as SHA-2).
SHA-1 and MD5 algorithms are the most widely file checksum algorithms, these algorithms can determine whether the received information is damaged or tampered. Briefly, SHA-1 hash algorithm can ensure the integrity of archives, as long as archives have been changed one byte, its SHA-1 checksum will be different.
The calculation speed of this software is very fast, the computing time mainly depends your computer CPU floating point performance and the size of processing files.