I was working on some password hashing stuff and ran into a gotcha I thought I’d pass along.
When you have code like the following:
Byte data = Encoding.ASCII.GetBytes(pass);
SHA1Managed sham = new SHA1Managed();
Byte hash = sham.ComputeHash(data);
string result = "";
foreach (Byte b in hash)
result += b.ToString("X"); // convert byte to hex
You’ll get some odd errors. The reason is that statement with the ToString(“X”) call in it. I found out the hard way that this only returns a single character when the value should have a leading zero in it: “D” instead of “0D”.
Use ToString(“X2”) to get the properly-formatted value.
(h/t Anthony Ogden for the sample source code)
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