pfasante

from sage.crypto.boolean_function import BooleanFunction
from sage.crypto.sbox import SBox


def algebraic_normal_form(self):
    """
    Computes the algebraic normal forms (ANFs) of every coordinate.
    """
    n = self.input_size()
    return [self.component_function(i).algebraic_normal_form()

pfasante

from sage.crypto.sbox import SBox

# List taken from De Canniere's PhD Thesis
# Available at http://blog.sciencenet.cn/upload/blog/file/2009/3/20093320521938772.pdf

representatives = [
    SBox([0x4, 0x0, 0x1, 0xF, 0x2, 0xB, 0x6, 0x7, 0x3, 0x9, 0xA, 0x5, 0xC, 0xD, 0xE, 0x8]),
    SBox([0x8, 0x0, 0x1, 0xC, 0x2, 0x5, 0x6, 0x9, 0x4, 0x3, 0xA, 0xB, 0x7, 0xD, 0xE, 0xF]),
    SBox([0x8, 0x0, 0x1, 0xC, 0xF, 0x5, 0x6, 0x7, 0x4, 0x3, 0xA, 0xB, 0x9, 0xD, 0xE, 0x2]),
    SBox([0x2, 0x0, 0x1, 0x8, 0x3, 0xD, 0x6, 0x7, 0x4, 0x9, 0xA, 0x5, 0xC, 0xB, 0xE, 0xF]),

pfasante

Keybase proof

I hereby claim:

• I am pfasante on github.
• I am asante (https://keybase.io/asante) on keybase.
• I have a public key ASDYesrFb3Luez5HujWc-gNGQsC-yMuU4caqDn08L-uraQo

To claim this, I am signing this object: