public static HashResponse GetMD5HashResponseFromFile(string filename, int bytesToHash)
{
var hashResponse = new HashResponse();
try
{
using (Stream stream = File.OpenRead(filename))
{
var buf = new byte[bytesToHash];
int bytesRead = stream.Read(buf, 0, buf.Length);
long totalBytesRead = bytesRead;
while (bytesRead > 0 && totalBytesRead <= bytesToHash)
{
bytesRead = stream.Read(buf, 0, buf.Length);
totalBytesRead += bytesRead;
}
hashResponse.BytesHashed = totalBytesRead;
hashResponse.IsPartialHash = stream.Length > bytesToHash;
using (var md5 = MD5.Create())
{
hashResponse.Hash = md5.ComputeHash(buf);
}
}
return(hashResponse);
}
catch (FileLoadException) // if doing hasing on system drive cant open files dont care.
{
return(null);
}
catch (Exception ex)
{
ILogger logger = new Logger();
logger.LogDebug(
$" original filename \"{filename}\"");
logger.LogException(ex, "MD5Hash");
return(null);
}
}
public static HashResponse GetMD5HashFromFile(string filename)
{
try
{
using (Stream stream = File.OpenRead(filename))
{
var hashResponse = new HashResponse();
using (var md5 = MD5.Create())
{
hashResponse.Hash = md5.ComputeHash(stream);
hashResponse.IsPartialHash = false;
hashResponse.BytesHashed += stream.Length;
return(hashResponse);
}
}
}
catch (Exception ex)
{
ILogger logger = new Logger();
logger.LogException(ex, "MD5Hash");
return(null);
}
}