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[原创][推荐][原创] 2021 KCTF 秋季赛 防守方提交题目
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发表于:
2021-10-7 11:36
7893
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[原创][推荐][原创] 2021 KCTF 秋季赛 防守方提交题目
de23f9d82798377ea01743d43d5353cd
def pure_block_cipher_encrypt(p: list, k: list, round_n: int, constant_c: list):
assert len(p) == 2
assert len(k) == 2
pl = p[0]
pr = p[1]
tmpl = pl
tmpr = pr
for i in range(round_n):
tmpl, tmpr = pure_block_cipher_enc_round(tmpl, tmpr, k[i % 2], constant_c[i])
return tmpl, tmpr
def pure_block_cipher_enc_round(xl, xr, ki, ci):
yl = xr
yr = xl + (xr + ki + ci)^3
return (yl, yr)
def pure_block_cipher_encrypt(p: list, k: list, round_n: int, constant_c: list):
assert len(p) == 2
assert len(k) == 2
pl = p[0]
pr = p[1]
tmpl = pl
tmpr = pr
for i in range(round_n):
tmpl, tmpr = pure_block_cipher_enc_round(tmpl, tmpr, k[i % 2], constant_c[i])
return tmpl, tmpr
def pure_block_cipher_enc_round(xl, xr, ki, ci):
yl = xr
yr = xl + (xr + ki + ci)^3
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最后于 2021-12-15 13:05
被kanxue编辑
，原因：
