#17406: sage.crypto.gen_lattice: quotient parameter should accept polynomials
----------------------------+----------------------------
Reporter: jdemeyer | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.5
Component: cryptography | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
----------------------------+----------------------------
This works:
{{{
sage: var('x')
x
sage: sage.crypto.gen_lattice(type='ideal', seed=42, quotient=x^4-1)
[11 0 0 0 0 0 0 0]
[ 0 11 0 0 0 0 0 0]
[ 0 0 11 0 0 0 0 0]
[ 0 0 0 11 0 0 0 0]
[ 4 -2 -3 -3 1 0 0 0]
[-3 4 -2 -3 0 1 0 0]
[-3 -3 4 -2 0 0 1 0]
[-2 -3 -3 4 0 0 0 1]
}}}
But this should also work:
{{{
sage: R.<x> = ZZ[]
sage: sage.crypto.gen_lattice(type='ideal', seed=42, quotient=x^4-1)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
<ipython-input-11-387441ec01a8> in <module>()
----> 1 sage.crypto.gen_lattice(type='ideal', seed=Integer(42),
quotient=x**Integer(4)-Integer(1))
/usr/local/src/sage-config/local/lib/python2.7/site-
packages/sage/crypto/lattice.pyc in gen_lattice(type, n, m, q, seed,
quotient, dual, ntl, lattice)
215 if quotient is None: raise \
216 ValueError('ideal bases require a quotient
polynomial')
--> 217 x = quotient.default_variable()
218 if n != quotient.degree(x): raise \
219 ValueError('ideal bases require n =
quotient.degree()')
/usr/local/src/sage-config/local/lib/python2.7/site-
packages/sage/structure/element.so in
sage.structure.element.Element.__getattr__
(build/cythonized/sage/structure/element.c:4074)()
/usr/local/src/sage-config/local/lib/python2.7/site-
packages/sage/structure/misc.so in
sage.structure.misc.getattr_from_other_class
(build/cythonized/sage/structure/misc.c:1631)()
AttributeError:
'sage.rings.polynomial.polynomial_integer_dense_flint.Polynomial_integer_dense_flint'
object has no attribute 'default_variable'
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/17406>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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