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ambv merged 4 commits into from
Aug 13, 2021
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bpo-36700: updated RFC references #27700

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d1bbd7f
updated rfc references; added section on security considerations
akulakov Aug 9, 2021
4d26d77
added news
akulakov Aug 9, 2021
1afce02
Fix RST header
ambv Aug 13, 2021
ab77211
List security considerations in the security index
ambv Aug 13, 2021
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updated rfc references; added section on security considerations
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@akulakov @ambv
akulakov authored and ambv committed Aug 13, 2021
commit d1bbd7fbd1ea010ff26244966e61e55d91d783df
13 changes: 9 additions & 4 deletions Doc/library/base64.rst
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Expand Up @@ -2,7 +2,7 @@
===============================================================

.. module:: base64
:synopsis: RFC 3548: Base16, Base32, Base64 Data Encodings;
:synopsis: RFC 4648: Base16, Base32, Base64 Data Encodings;
Base85 and Ascii85

**Source code:** :source:`Lib/base64.py`
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This module provides functions for encoding binary data to printable
ASCII characters and decoding such encodings back to binary data.
It provides encoding and decoding functions for the encodings specified in
:rfc:`3548`, which defines the Base16, Base32, and Base64 algorithms,
:rfc:`4648`, which defines the Base16, Base32, and Base64 algorithms,
and for the de-facto standard Ascii85 and Base85 encodings.

The :rfc:`3548` encodings are suitable for encoding binary data so that it can
The :rfc:`4648` encodings are suitable for encoding binary data so that it can be
safely sent by email, used as parts of URLs, or included as part of an HTTP
POST request. The encoding algorithm is not the same as the
:program:`uuencode` program.
Expand All @@ -28,7 +28,7 @@ There are two interfaces provided by this module. The modern interface
supports encoding :term:`bytes-like objects <bytes-like object>` to ASCII
:class:`bytes`, and decoding :term:`bytes-like objects <bytes-like object>` or
strings containing ASCII to :class:`bytes`. Both base-64 alphabets
defined in :rfc:`3548` (normal, and URL- and filesystem-safe) are supported.
defined in :rfc:`4648` (normal, and URL- and filesystem-safe) are supported.

The legacy interface does not support decoding from strings, but it does
provide functions for encoding and decoding to and from :term:`file objects
Expand Down Expand Up @@ -287,6 +287,11 @@ An example usage of the module:
>>> data
b'data to be encoded'

Security Considerations
---

A new security considerations section was added to :rfc:`4648` (section 12); it's
recommended to review the security section for any code deployed to production.

.. seealso::

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