[bug#29415] [PATCH] gnu: python-axolotl: Update to 0.1.39 and fix build.

[Adam Van Ymeren <adam@vany.ca>]

Patch taken from the debian package for python-axolotl-0.1.39.

python-axolotl has been failing since March,
https://hydra.gnu.org/job/gnu/master/python-axolotl-0.1.35.x86_64-linux

This also fixes the OMEMO and OTR plugins for Gajim work.

---
 ...olotl-removes-IV-parameter-at-AES-creation.patch | 21 +++++++++++++++++++++
 gnu/packages/python-crypto.scm                      |  6 ++++--
 2 files changed, 25 insertions(+), 2 deletions(-)
 create mode 100644 gnu/packages/patches/python-axolotl-removes-IV-parameter-at-AES-creation.patch

diff --git a/gnu/packages/patches/python-axolotl-removes-IV-parameter-at-AES-creation.patch b/gnu/packages/patches/python-axolotl-removes-IV-parameter-at-AES-creation.patch
new file mode 100644
index 000000000..b25806ca2
--- /dev/null
+++ b/gnu/packages/patches/python-axolotl-removes-IV-parameter-at-AES-creation.patch
@@ -0,0 +1,21 @@
+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
+ 
+ 
diff --git a/gnu/packages/python-crypto.scm b/gnu/packages/python-crypto.scm
index 77409d86d..3ffa477fe 100644
--- a/gnu/packages/python-crypto.scm
+++ b/gnu/packages/python-crypto.scm
@@ -430,7 +430,7 @@ python-axolotl.")
 (define-public python-axolotl
   (package
     (name "python-axolotl")
-    (version "0.1.35")
+    (version "0.1.39")
     (source
      (origin
        (method url-fetch)
@@ -438,8 +438,10 @@ python-axolotl.")
              "https://github.com/tgalal/python-axolotl/archive/"
              version ".tar.gz"))
        (file-name (string-append name "-" version ".tar.gz"))
+       (patches (search-patches
+                 "python-axolotl-removes-IV-parameter-at-AES-creation.patch"))
        (sha256
-        (base32 "1z8d89p7v40p4bwywjm9h4z28fdvra79ddw06azlkrfjbl7dxmz8"))))
+        (base32 "0badsgkgz0ir3hqynxzsfjgacppi874syvvmgccc6j164053x6zm"))))
     (build-system python-build-system)
     (arguments
      `(#:phases
-- 
2.15.0