C# SHA1散列算法

/// <summary>
/// C# SHA1散列算法
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string EncryptToSHA1(string str)
{
byte[] cleanBytes = Encoding.Default.GetBytes(str);
byte[] hashedBytes = System.Security.Cryptography.SHA1.Create().ComputeHash(cleanBytes);
return BitConverter.ToString(hashedBytes).Replace("-", "");
}