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password.py
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password.py
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def calculate_password(password, nonce):
m_1 = 0xFFFFFFFF
m_8 = 0xFFFFFFF8
m_16 = 0xFFFFFFF0
m_128 = 0xFFFFFF80
m_16777216 = 0XFF000000
flag = True
num1 = 0
num2 = 0
password = int(password)
for c in nonce:
num1 = num1 & m_1
num2 = num2 & m_1
if c == '1':
length = not flag
if not length:
num2 = password
num1 = num2 & m_128
num1 = num1 >> 7
num2 = num2 << 25
num1 = num1 + num2
flag = False
elif c == '2':
length = not flag
if not length:
num2 = password
num1 = num2 & m_16
num1 = num1 >> 4
num2 = num2 << 28
num1 = num1 + num2
flag = False
elif c == '3':
length = not flag
if not length:
num2 = password
num1 = num2 & m_8
num1 = num1 >> 3
num2 = num2 << 29
num1 = num1 + num2
flag = False
elif c == '4':
length = not flag
if not length:
num2 = password
num1 = num2 << 1
num2 = num2 >> 31
num1 = num1 + num2
flag = False
elif c == '5':
length = not flag
if not length:
num2 = password
num1 = num2 << 5
num2 = num2 >> 27
num1 = num1 + num2
flag = False
elif c == '6':
length = not flag
if not length:
num2 = password
num1 = num2 << 12
num2 = num2 >> 20
num1 = num1 + num2
flag = False
elif c == '7':
length = not flag
if not length:
num2 = password
num1 = num2 & 0xFF00
num1 = num1 + ((num2 & 0xFF) << 24)
num1 = num1 + ((num2 & 0xFF0000) >> 16)
num2 = (num2 & m_16777216) >> 8
num1 = num1 + num2
flag = False
elif c == '8':
length = not flag
if not length:
num2 = password
num1 = num2 & 0xFFFF
num1 = num1 << 16
num1 = num1 + (num2 >> 24)
num2 = num2 & 0xFF0000
num2 = num2 >> 8
num1 = num1 + num2
flag = False
elif c == '9':
length = not flag
if not length:
num2 = password
num1 = ~num2
flag = False
else:
num1 = num2
num2 = num1
return num1 & m_1