crch2.txt

CRC校验算法 CRC校验算法 CRC校验算法 CRC校验算法

This program analyzes a file, calculates its CRC32 and then calculates what modification needs to be done (actually, addition to the end of the file up to 4 bytes) so that the file's new CRC matches a given CRC.

1.Click Select to select the file, or just type in the filename.

Optional: Click Examine to see the crc32 of the file. This will be done anyway later so if you have a large file don't do it.

2.Enter requested CRC32 in hex format (8 digits).

3.Click on Do It!

A few minutes later, a dialog will appear and your permission is required to append the necessairy bytes to the file. Usually, this will not affect the file in any other way (ie, executables will run, images will show up, etc), but check it out to be sure.

Programmed with Delphi 6.

Don't mess it up entering files that don't exist for fun. I haven't done any error checking.

The source is available (for free) at request.

http://www34.brinkster.com/dizzyk/