Merge branch 'fix-tweakey-m4'

1 files changed, 71 insertions, 0 deletions

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index d836ba6..cc38a27 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,8 +1,79 @@
 v1.1
 ====
 
+ref
+---
+
+### Fixes
+
+These modifications change the algorithm's output.
+
+- Change alpha coefficients in tweakey schedule to ensure lane 0 is updated between each round:
+    - lane 0: Id  => M
+    - lane 1: M   => M^2
+    - lane 2: M^2 => M^3
+    - lane 3: M^3 => M^4
+    - lane 4: M_R   (unchanged)
+    - lane 5: M_R^2 (unchanged)
+    - lane 6: M_R^3 (unchanged)
+  (multiplications.h, tweakey.c)
+
+### Cleanups
+
+These modifications are structural and/or stylistic and do not change the algorithm's ouptut.
+
+- Introduce helper function copy_block_index() to make tweak-building functions more legible.
+  (lilliput-ae-utils.h, lilliput-i.c, lilliput-ii.c)
+
+- Initialize ΘCB3 tweak with nonce instead of copying the latter into the latter repeatedly.
+  (lilliput-i.c)
+
+- Re-write _nonlinear_layer() and _linear_layer() functions to better resemble the specification.
+  (cipher.c)
+
+- Extract tweakey multiplications into their own header file, so that other implementations can make more targeted changes.
+  (constants.h, multiplications.h, tweakey.c)
+
+add_threshold
+-------------
+
+### Fixes
+
+See reference implementation.
+
+### Cleanups
+
+See reference implementation. Further cleanups:
+
+- Use size_t to iterate on arrays in lilliput_tbc_encrypt() and lilliput_tbc_decrypt().
+  (cipher.c)
+
+- Add constant macros KEY_LANES_NB and TWEAK_LANES_NB to make tweakey schedule code more legible.
+  (tweakey.c)
+
+add_tweakeyloop
+---------------
+
+See reference implementation.
+
+add_python
+----------
+
+### Fixes
+
+See reference implementation.
+
+### Cleanups
+
+- Re-write tweakey multiplications to better resemble the specification.
+  (multiplications.py)
+
+add_vhdl
+--------
+
 TODO
 
+
 v1.0
 ====