public byte[] Expand(
ReadOnlySpan <byte> pseudorandomKey,
ReadOnlySpan <byte> info,
int count)
{
if (pseudorandomKey.Length < crypto_auth_hmacsha512_BYTES)
{
throw Error.Argument_InvalidPrkLength(nameof(pseudorandomKey), crypto_auth_hmacsha512_BYTES.ToString());
}
if (count < 0)
{
throw Error.ArgumentOutOfRange_DeriveNegativeCount(nameof(count));
}
if (count > MaxOutputSize)
{
throw Error.ArgumentOutOfRange_DeriveInvalidCount(nameof(count), MaxOutputSize.ToString());
}
if (count == 0)
{
return(new byte[0]);
}
byte[] bytes = new byte[count];
ExpandCore(pseudorandomKey, info, bytes);
return(bytes);
}
public override string ToString()
{
return(string.Format(CultureInfo.CurrentCulture,
"VIDEO_STREAM_CONFIG_CAPS - guid: {0}, VideoStandard: {1}, " +
"InputSize: {2}, " +
"MinCroppingSize: {3}, MaxCroppingSize: {4}, " +
"CropGranularityX: {5}, CropGranularityY: {6}, " +
"CropAlignX: {7}, CropAlignY: {8}, " +
"MinOutputSize: {9}, MaxOutputSize: {10}, " +
"OutputGranularityX: {11}, OutputGranularityY: {12}, " +
"StretchTapsX: {13}, StretchTapsY: {14}, " +
"ShrinkTapsX: {15}, ShrinkTapsY: {16}, " +
"MinFrameInterval: {17}, MaxFrameInterval: {18}, " +
"MinBitsPerSecond: {19}, MaxBitsPerSecond: {20}",
// Docs clearly say this is a format type
MediaType.FormatType.GuidToString(guid), VideoStandard,
InputSize.ToString(),
MinCroppingSize.ToString(), MaxCroppingSize.ToString(),
CropGranularityX, CropGranularityY,
CropAlignX, CropAlignY,
MinOutputSize.ToString(), MaxOutputSize.ToString(),
OutputGranularityX, OutputGranularityY,
StretchTapsX, StretchTapsY,
ShrinkTapsX, ShrinkTapsY,
MinFrameInterval, MaxFrameInterval,
MinBitsPerSecond, MaxBitsPerSecond));
}
public void Expand(
ReadOnlySpan <byte> pseudorandomKey,
ReadOnlySpan <byte> info,
Span <byte> bytes)
{
if (pseudorandomKey.Length < crypto_auth_hmacsha256_BYTES)
{
throw Error.Argument_InvalidPrkLength(nameof(pseudorandomKey), crypto_auth_hmacsha256_BYTES.ToString());
}
if (bytes.Length > MaxOutputSize)
{
throw Error.Argument_DeriveInvalidCount(nameof(bytes), MaxOutputSize.ToString());
}
if (Utilities.Overlap(bytes, pseudorandomKey))
{
throw Error.Argument_OverlapPrk(nameof(bytes));
}
if (Utilities.Overlap(bytes, info))
{
throw Error.Argument_OverlapInfo(nameof(bytes));
}
if (bytes.IsEmpty)
{
return;
}
ExpandCore(pseudorandomKey, info, bytes);
}
internal /*public*/ void Expand(
ReadOnlySpan <byte> pseudorandomKey,
ReadOnlySpan <byte> info,
Span <byte> bytes)
{
if (pseudorandomKey.Length < crypto_auth_hmacsha512_BYTES)
{
throw Error.Argument_InvalidPrkLength(nameof(pseudorandomKey), crypto_auth_hmacsha512_BYTES.ToString());
}
if (bytes.Length > MaxOutputSize)
{
throw Error.Argument_DeriveInvalidCount(nameof(bytes), MaxOutputSize.ToString());
}
if (bytes.Overlaps(pseudorandomKey))
{
throw Error.Argument_OverlapPrk(nameof(bytes));
}
if (bytes.Overlaps(info))
{
throw Error.Argument_OverlapInfo(nameof(bytes));
}
ExpandCore(pseudorandomKey, info, bytes);
}