public unsafe Checksum(byte[] checksum)
{
if (checksum.Length == 0)
{
_checkSum = default;
return;
}
else if (checksum.Length != Sha1HashSize)
{
throw new ArgumentException($"{nameof(checksum)} must be a SHA-1 hash", nameof(checksum));
}
fixed(byte *data = checksum)
{
// Avoid a direct dereferencing assignment since sizeof(Sha1Hash) may be greater than Sha1HashSize.
_checkSum = Sha1Hash.FromPointer((Sha1Hash *)data);
}
}
public unsafe Checksum(ImmutableArray <byte> checksum)
{
if (checksum.Length == 0)
{
_checkSum = default;
return;
}
else if (checksum.Length != Sha1HashSize)
{
throw new ArgumentException($"{nameof(checksum)} must be a SHA-1 hash", nameof(checksum));
}
using (var pooled = SharedPools.ByteArray.GetPooledObject())
{
var bytes = pooled.Object;
checksum.CopyTo(bytes);
fixed(byte *data = bytes)
{
// Avoid a direct dereferencing assignment since sizeof(Sha1Hash) may be greater than Sha1HashSize.
_checkSum = Sha1Hash.FromPointer((Sha1Hash *)data);
}
}
}