has_linear_structure() trace

[Γίαννης Κολλητίδης]

Hi everyone,

I have used the has_linear_structure()  function according to example: http://doc.sagemath.org/html/en/reference/cryptography/sage/crypto/boolean_function.html#sage.crypto.boolean_function.BooleanFunction.nonlinearity

sage: from sage.crypto.boolean_function import BooleanFunction

sage: f = BooleanFunction([0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0])

sage: f.has_linear_structure()

and as return I have the following error:

Traceback (click to the left of this block for traceback)
...
AttributeError: 'sage.crypto.boolean_function.BooleanFunction' object
has no attribute 'has_linear_structure'

The example I used is exactly the same from the documentation. 
If I use the autocorrelation function after , works perfectly. 
Could you please assist ? Thank you in advance.

[Rusydi H. Makarim]

Hi,

Which version of SageMath that you used ?

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[Rusydi H. Makarim]

Note that has_linear_structure() in Boolean Function is only available from SageMath version >= 8.0

[Justin C. Walker]

FWIW, I tried this on Sage 8.0 (macOS 10.11.6), and did not have a failure (the result was ‘True’).

What version of Sage are you using, what system (OS, hardware) and versions?

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Justin C. Walker
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[Γίαννης Κολλητίδης]

Hello, 
You are right. I had version 7.6 and that was the problem. Thank you for yours assistance.

Τη Παρασκευή, 1 Δεκεμβρίου 2017 - 12:16:13 μ.μ. UTC+1, ο χρήστης Rusydi H. Makarim έγραψε:

Note that has_linear_structure() in Boolean Function is only available from SageMath version >= 8.0

On 1 Dec 2017 11:49 a.m., "Rusydi H. Makarim" <rusydi...@gmail.com> wrote:

Hi,

Which version of SageMath that you used ?

On 1 Dec 2017 11:40 a.m., "Γίαννης Κολλητίδης" <johnk...@gmail.com> wrote:

Hi everyone,

I have used the has_linear_structure()  function according to example: http://doc.sagemath.org/html/en/reference/cryptography/sage/crypto/boolean_function.html#sage.crypto.boolean_function.BooleanFunction.nonlinearity

sage: from sage.crypto.boolean_function import BooleanFunction

sage: f = BooleanFunction([0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0])

sage: f.has_linear_structure()

and as return I have the following error:

Traceback (click to the left of this block for traceback)
...
AttributeError: 'sage.crypto.boolean_function.BooleanFunction' object
has no attribute 'has_linear_structure'

The example I used is exactly the same from the documentation. 
If I use the autocorrelation function after , works perfectly. 
Could you please assist ? Thank you in advance.

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