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:mod:`ussl` -- SSL/TLS module
=============================
.. module:: ussl
:synopsis: TLS/SSL wrapper for socket objects
|see_cpython_module| :mod:`python:ssl`.
This module provides access to Transport Layer Security (previously and
widely known as “Secure Sockets Layer”) encryption and peer authentication
facilities for network sockets, both client-side and server-side.
Functions
---------
.. function:: ssl.wrap_socket(sock, server_side=False, keyfile=None, certfile=None, cert_reqs=CERT_NONE, ca_certs=None)
Takes a stream *sock* (usually usocket.socket instance of ``SOCK_STREAM`` type),
and returns an instance of ssl.SSLSocket, which wraps the underlying stream in
an SSL context. Returned object has the usual stream interface methods like
`read()`, `write()`, etc. In MicroPython, the returned object does not expose
socket interface and methods like `recv()`, `send()`. In particular, a
server-side SSL socket should be created from a normal socket returned from
`accept()` on a non-SSL listening server socket.
Depending on the underlying module implementation for a particular board,
some or all keyword arguments above may be not supported.
.. warning::
Some implementations of ``ssl`` module do NOT validate server certificates,
which makes an SSL connection established prone to man-in-the-middle attacks.
Exceptions
----------
.. data:: ssl.SSLError
This exception does NOT exist. Instead its base class, OSError, is used.
Constants
---------
.. data:: ssl.CERT_NONE
ssl.CERT_OPTIONAL
ssl.CERT_REQUIRED
Supported values for *cert_reqs* parameter.
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