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kse-02/instrumented/railfence_cipher.py

67 lines
1.8 KiB
Python

def railencrypt_instrumented(st: str, k: int) -> str:
assert (k > 1)
c = 0
x = 0
m = [([0] * len(st)) for i in range(k)]
for r in range(len(st)):
m[c][r] = ord(st[r])
if evaluate_condition(1, 'Eq', x, 0):
if evaluate_condition(2, 'Eq', c, (k - 1)):
x = 1
c -= 1
else:
c += 1
elif evaluate_condition(3, 'Eq', c, 0):
x = 0
c += 1
else:
c -= 1
result = []
for i in range(k):
for j in range(len(st)):
if evaluate_condition(4, 'NotEq', m[i][j], 0):
result.append(chr(m[i][j]))
return ''.join(result)
def raildecrypt_instrumented(st: str, k: int) -> str:
assert (k > 1)
(c, x) = (0, 0)
m = [([0] * len(st)) for i in range(k)]
for r in range(len(st)):
m[c][r] = 1
if evaluate_condition(5, 'Eq', x, 0):
if evaluate_condition(6, 'Eq', c, (k - 1)):
x = 1
c -= 1
else:
c += 1
elif evaluate_condition(7, 'Eq', c, 0):
x = 0
c += 1
else:
c -= 1
result = []
(c, x) = (0, 0)
for i in range(k):
for j in range(len(st)):
if evaluate_condition(8, 'Eq', m[i][j], 1):
m[i][j] = ord(st[x])
x += 1
for r in range(len(st)):
if evaluate_condition(9, 'NotEq', m[c][r], 0):
result.append(chr(m[c][r]))
if evaluate_condition(10, 'Eq', x, 0):
if evaluate_condition(11, 'Eq', c, (k - 1)):
x = 1
c -= 1
else:
c += 1
elif evaluate_condition(12, 'Eq', c, 0):
x = 0
c += 1
else:
c -= 1
return ''.join(result)