private string HashFile(System.IO.Stream stream, string strAlgName)
{
System.Security.Cryptography.HashAlgorithm algorithm;
if (strAlgName == null)
{
logTrace.TraceWarning("algName 不能为空");
}
if (string.Compare(strAlgName, "sha1", true) == 0)
{
algorithm = System.Security.Cryptography.SHA1.Create();
}
else
{
if (string.Compare(strAlgName, "md5", true) != 0)
{
logTrace.TraceWarning("algName 只能使用 sha1 或 md5");
}
algorithm = System.Security.Cryptography.MD5.Create();
}
return(BitConverter.ToString(algorithm.ComputeHash(stream)).Replace("-", ""));
}
