int ProcessBlock(
ReadOnlySpan<byte> input,
Span<byte> output
)Function ProcessBlock (
input As ReadOnlySpan(Of Byte),
output As Span(Of Byte)
) As Integerint ProcessBlock(
ReadOnlySpan<unsigned char> input,
Span<unsigned char> output
)function ProcessBlock(input, output);| DataLengthException | If input block is wrong size, or output span too small. |