this.ArchiveInfo.StartPositionAfterHeader = this.inStream.position;
CRC crc = new CRC();
crc.UpdateUInt64(nextHeaderOffset);
crc.UpdateUInt64(nextHeaderSize);
crc.UpdateUInt32(nextHeaderCRC);
if (crc.GetDigest() != crcFromArchive)
throw new IOException("Incorrect Header, CRCs don't match: archive: " +
Integer.toHexString(crcFromArchive) + ", calculated: " + crc); // CInArchiveException(CInArchiveException::kIncorrectHeader);