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-rw-r--r--docs/library/ubinascii.rst8
1 files changed, 6 insertions, 2 deletions
diff --git a/docs/library/ubinascii.rst b/docs/library/ubinascii.rst
index 0664d5b09d..192d34514b 100644
--- a/docs/library/ubinascii.rst
+++ b/docs/library/ubinascii.rst
@@ -29,8 +29,12 @@ Functions
.. function:: a2b_base64(data)
- Convert Base64-encoded data to binary representation. Returns bytes string.
+ Decode base64-encoded data, ignoring invalid characters in the input.
+ Conforms to `RFC 2045 s.6.8 <https://tools.ietf.org/html/rfc2045#section-6.8>`_.
+ Returns a bytes object.
.. function:: b2a_base64(data)
- Encode binary data in Base64 format. Returns string.
+ Encode binary data in base64 format, as in `RFC 3548
+ <https://tools.ietf.org/html/rfc3548.html>`_. Returns the encoded data
+ followed by a newline character, as a bytes object.