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Optimize code for cryptutils.py

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This commit is contained in:
ColdWindScholar 2024-05-04 13:43:30 +08:00
parent 51d25f060e
commit af5c37edd6
1 changed files with 4 additions and 2 deletions
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6
mtkclient/Library/cryptutils.py
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@ -76,7 +76,8 @@ class cryptutils:
class aes: class aes:
# GF(2^128) defined by 1 + a + a^2 + a^7 + a^128 # GF(2^128) defined by 1 + a + a^2 + a^7 + a^128
# Please note the MSB is x0 and LSB is x127 # Please note the MSB is x0 and LSB is x127
def gf_2_128_mul(self, x, y): @staticmethod
def gf_2_128_mul(x, y):
assert x < (1 << 128) assert x < (1 << 128)
assert y < (1 << 128) assert y < (1 << 128)
res = 0 res = 0
@ -367,7 +368,8 @@ class cryptutils:
x = bytes.fromhex(h) x = bytes.fromhex(h)
return b'\x00' * int(x_len - len(x)) + x return b'\x00' * int(x_len - len(x)) + x
def os2ip(self, x): @staticmethod
def os2ip(x):
"""Converts the byte string x representing an integer reprented using the """Converts the byte string x representing an integer reprented using the
big-endian convient to an integer. big-endian convient to an integer.
""" """