Org.BouncyCastle.Bcpg.ArmoredInputStream
Reader for Base64 armored objects - read the headers and then start returning bytes when the data is reached.
Create a stream for reading a PGP armored message, parsing up to a header and then reading the data that
follows.
Create an armored input stream which will assume the data starts straight away, or parse for headers first
depending on the value of hasHeaders.
Return the armor header line (if there is one).
Return the armor headers (the lines after the armor header line).
Change how the stream should react if it encounters a missing CRC checksum.