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#!/usr/bin/env sage
def mat_from_uint64(n):
return Matrix(GF(2), [[(n >> (i*8+j)) & 1 for j in range(8)] for i in range(8)])
def uint64_from_mat(m):
s = 0
for i in range(8):
for j in range(8):
if m[i, j]:
s += 1 << (i*8 + j)
return s
matA=mat_from_uint64(0x12345678ABCDEF)
matB=mat_from_uint64(0x12345118ABCD32)
print hex(uint64_from_mat(matB * matA))
matA=mat_from_uint64(0x0201040810208040)
matB=mat_from_uint64(0x0102011701010133)
print matA*matB
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