blob: 32ac219ebcd236fe22e10e4db13c44c9bd89df6e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
table = 'fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF'
tr = {}
for i in range(58):
tr[table[i]] = i
s = [11, 10, 3, 8, 4, 6]
xor = 177451812
add = 8728348608
def dec(x) -> int:
r = 0
for i in range(6):
r += tr[x[s[i]]] * 58**i
return (r - add) ^ xor
def enc(x) -> str:
x = (x ^ xor) + add
r = list('BV1 4 1 7 ')
for i in range(6):
r[s[i]] = table[x // 58**i % 58]
return ''.join(r)
|
