Patch taken from the Debian package for python-axolotl-0.1.39.
See <https://bugs.gnu.org/29415>.

Description: Removes IV paramenter from AES constructor, since it is not necessary for ctr mode.
Author: Josue Ortega <josue@debian.org>
Last-Update: 2017-04-13

--- a/axolotl/sessioncipher.py
+++ b/axolotl/sessioncipher.py
@@ -228,13 +228,7 @@
         # counterint = struct.unpack(">L", counterbytes)[0]
         # counterint = int.from_bytes(counterbytes, byteorder='big')
         ctr = Counter.new(128, initial_value=counter)
-
-        # cipher = AES.new(key, AES.MODE_CTR, counter=ctr)
-        ivBytes = bytearray(16)
-        ByteUtil.intToByteArray(ivBytes, 0, counter)
-
-        cipher = AES.new(key, AES.MODE_CTR, IV=bytes(ivBytes), counter=ctr)
-
+        cipher = AES.new(key, AES.MODE_CTR, counter=ctr)
         return cipher
 
 
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<tr><td><span title='2020-11-12 10:13:45 +0100'>2020-11-12</span></td><td><a href='/guix/commit/po/packages?id=ef1107e2cca9a5b6f7129d019aabac2f0e89a238'>nls: Update string translations.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-10-27 00:40:24 +0100'>2020-10-27</span></td><td><a href='/guix/commit/po/packages?id=b35550c3d8ab5db3210319269ef5ad1dd271a43a'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-10-16 15:00:49 +0200'>2020-10-16</span></td><td><a href='/guix/commit/po/packages?id=a743b04a41b9976a8d087056393ba5cf317af452'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-09-29 15:40:25 +0200'>2020-09-29</span></td><td><a href='/guix/commit/po/packages?id=ac324be105977d531928ef7da79483ae7a461b68'>nls: Fix copyright and bug address in pot files.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/guix/Makevars: Fix COPYRIGHT_HOLDER and MSGID_BUGS_ADDRESS.
* po/packages/Makevars: idem.
</span></span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-04-14 13:01:58 +0200'>2020-04-14</span></td><td><a href='/guix/commit/po/packages?id=2b2921937017bf4b3c7c8be2d0448f8c64d02bb1'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-04-12 00:18:05 +0200'>2020-04-12</span></td><td><a href='/guix/commit/po/packages?id=935ef44b398353b5b6af94e185d7b0c3d833db0b'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-03-23 00:06:58 +0100'>2020-03-23</span></td><td><a href='/guix/commit/po/packages?id=86603d8660e42a3b5d8b407e456a98429943bc7e'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>