Get SHA256 hash

Sha256Helper.cs

namespace Ruyut.Helpers
{
    public static class Sha256Helper
    {
        /// <summary>
        /// Get SHA256 hash
        /// </summary>
        /// <param name="str"></param>
        /// <example>
        /// For example:
        /// <code>
        ///    Sha256("Ruyut");
        /// </code>
        ///  results in <c>e5a47100b733b86f6fc82b9b614c4829bc9042ca3f24a65c5c2783c699ed6625</c>
        /// </example>
        public static string Sha256(string str)
        {
            byte[] sha256Bytes = Encoding.UTF8.GetBytes(str);
            SHA256Managed sha256 = new SHA256Managed();
            byte[] bytes = sha256.ComputeHash(sha256Bytes);
            return BitConverter.ToString(bytes).Replace("-", "").ToLower();
        }
    }
}