Reads a boolean (any non-zero byte is true).
Reads a single byte.
Reads an SSH mpint body and returns it verbatim (sign byte included if present).
Reads an SSH mpint as a non-negative bigint.
Reads an SSH name-list into an array (empty list -> []).
Reads n raw bytes.
Reads an SSH string and returns its bytes.
Reads an SSH string and decodes it as UTF-8.
Reads a big-endian uint32.
Reads a big-endian uint64.
Parses an SSH packet payload built from RFC 4251 primitive types.