import hashlib
import binascii
from sage.crypto.util import ascii_integer
bin = BinaryStrings()
k1 = hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest()
k2 = hashlib.sha224(b"Nobody inspects").hexdigest()
A = bin.encoding(k1)
B = bin.encoding(k2)
A = list(A)
B = list(B)
A = Matrix([[A],[B]])