/// <summary>
/// 根据Stream计算MD5值
/// </summary>
/// <param name="stream">字节流</param>
/// <returns>MD5Hash</returns>
public static string GetMd5ByStream(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
MD5 md5Provider = MD5.Create();
byte[] buffer = md5Provider.ComputeHash(stream);
string result = BitConverter.ToString(buffer);
result = result.Replace("-", "");
md5Provider.Dispose();
return(result);
}
/// <summary>
/// 转换为MD5加密后的字符串（默认加密为32位）
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string ToMD5String(this string str)
{
MD5 md5 = MD5.Create();
byte[] inputBytes = Encoding.UTF8.GetBytes(str);
byte[] hashBytes = md5.ComputeHash(inputBytes);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hashBytes.Length; i++)
{
sb.Append(hashBytes[i].ToString("x2"));
}
md5.Dispose();
return(sb.ToString());
}
