/// <summary>
/// Encodes the given data using the SHA hash algorithm.
/// </summary>
/// <param name="data">data to hash</param>
/// <param name="format">output format</param>
/// <returns>sha 256 hash</returns>
public static string GenerateHash(string data, HashStringFormat format = HashStringFormat.Hex)
{
data = Arguments.EnsureNotNull(data, nameof(data));
using var algorithm = SHA256.Create();
return(Common.Hash(data, algorithm, format));
}
/// <summary>
/// Hash data
/// </summary>
/// <param name="data">data to hash</param>
/// <param name="algorithm">hash algorthim</param>
/// <param name="format">output format</param>
/// <returns>hash of data</returns>
internal static string Hash(string data, HashAlgorithm algorithm, HashStringFormat format)
{
// convert the input text to array of bytes
var hashData = algorithm.ComputeHash(Encoding.Default.GetBytes(data));
// create new instance of StringBuilder to save hashed data
var returnValue = new StringBuilder();
string?stringFormat = format switch
{
HashStringFormat.Hex => "x2",
HashStringFormat.Base64 => throw new NotImplementedException(),
_ => throw new InvalidOperationException($"unexpected hash format:{format}"),
};
// loop for each byte and add it to StringBuilder
for (int i = 0; i < hashData.Length; i++)
{
returnValue.Append(hashData[i].ToString(stringFormat, CultureInfo.InvariantCulture));
}
// return hashed string
return(returnValue.ToString().ToUpperInvariant());
}
