c# - SourceSafe CRC 计算

Question

有谁知道 Microsoft SourceSafe 中使用什么 CRC 校验和计算？我想在本地计算校验和并将其与 SourceSafe 校验和进行比较。

我使用的是在互联网上找到的 CRC 算法，但该算法的种子或多项式似乎与 SourceSafe 不同。

Answer 1

查看这篇文章:

http://www.tesoga.com/vssnotes.html

您可能正在寻找的广告是:

And the 16-bit CRC is mostly the standard algorithm. The one difference is that in my experience, CRCs typically start off by initializing the state to -1 (0xFFFFFFFF), accumulating, then returns the logical-NOT of the result. However, the VSS CRC logic initializes state to 0, and does not apply a logical-NOT at the end. Make certain you're using this technique when verifying any CRCs in the file. (Refer to VssCrc32() in CRC32.c for a working implementation.)

他提到的代码包含在这个 zip 文件中:

http://www.teachsolaisgames.com/downloads/vsscode.zip