#20611: More functions for mq.SBox and helper to build a Feistel/MISTY
constructed
S-Box
-------------------------------------+-------------------------------------
Reporter: ruhm | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.3
Component: cryptography | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/ruhm/improved_sbox | 96832f793fec97e01c56948c8f288753b5fe3c56
Dependencies: | Stopgaps:
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Changes (by ylchapuy):
* commit: => 96832f793fec97e01c56948c8f288753b5fe3c56
Comment:
Hi,\\
You might want to use more pythonic syntax e.g.
{{{#!python
def substitute(x):
mask = (1 << b) - 1
xl = (x >> b) & mask
xr = x & mask
for sb in sboxes:
xl, xr = sb(xl) ^ xr, xl
return (xl << b) | xr
}}}
also in my opinion {{{is_bent}}} should return {{{False}}} instead of
raising {{{ValueError}}}.
----
New commits:
||[https://git.sagemath.org/sage.git/commit?id=5ed03fa7ae556771adb834714b864d6c2c64c0bd
5ed03fa]||{{{initial commit}}}||
||[https://git.sagemath.org/sage.git/commit?id=96832f793fec97e01c56948c8f288753b5fe3c56
96832f7]||{{{merge develop with t/20611/improved_sbox}}}||
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Ticket URL: <https://trac.sagemath.org/ticket/20611#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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