/// <summary>
/// Computes the HMAC of a stream using the MD5 algorithm.
/// </summary>
/// <param name="key">The HMAC key.</param>
/// <param name="source">The stream to HMAC.</param>
/// <returns>The HMAC of the data.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="source" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="source" /> does not support reading.
/// </exception>
public static byte[] HashData(ReadOnlySpan<byte> key, Stream source)
{
ArgumentNullException.ThrowIfNull(source);
if (!source.CanRead)
throw new ArgumentException(SR.Argument_StreamNotReadable, nameof(source));
return LiteHashProvider.HmacStream(HashAlgorithmNames.MD5, HashSizeInBytes, key, source);
}
/// <summary>
/// Computes the HMAC of a stream using the MD5 algorithm.
/// </summary>
/// <param name="key">The HMAC key.</param>
/// <param name="source">The stream to HMAC.</param>
/// <param name="destination">The buffer to receive the HMAC value.</param>
/// <returns>The total number of bytes written to <paramref name="destination" />.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="source" /> is <see langword="null" />.
/// </exception>
/// <exception cref="ArgumentException">
/// <p>
/// The buffer in <paramref name="destination"/> is too small to hold the calculated HMAC
/// size. The MD5 algorithm always produces a 128-bit HMAC, or 16 bytes.
/// </p>
/// <p>-or-</p>
/// <p>
/// <paramref name="source" /> does not support reading.
/// </p>
/// </exception>
public static int HashData(ReadOnlySpan<byte> key, Stream source, Span<byte> destination)
{
ArgumentNullException.ThrowIfNull(source);
if (destination.Length < HashSizeInBytes)
throw new ArgumentException(SR.Argument_DestinationTooShort, nameof(destination));
if (!source.CanRead)
throw new ArgumentException(SR.Argument_StreamNotReadable, nameof(source));
return LiteHashProvider.HmacStream(HashAlgorithmNames.MD5, HashSizeInBytes, key, source, destination);
}
