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utils.py
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"""
版权所有：XuanRan
微信：XuanRan_Dev
邮箱：XuanRanDev@qq.com
"""
from datetime import tzinfo, timedelta
import requests
class MessagePush:
# PushPlus
@staticmethod
def pushMessage(title, content, token):
try:
url = 'http://www.pushplus.plus/send?token=' + token + '&title=' + title + '&content=' + content + '&template=html'
resp = requests.post(url)
if resp.json()["code"] == 200:
print('推送消息提醒成功！')
else:
print('推送消息提醒失败！')
except Exception as e:
print('推送消息提醒失败！')
class UTC(tzinfo):
"""UTC"""
def __init__(self, offset=0):
self._offset = offset
def utcoffset(self, dt):
return timedelta(hours=self._offset)
def tzname(self, dt):
return "UTC +%s" % self._offset
def dst(self, dt):
return timedelta(hours=self._offset)
def timezone(str):
if str == 'UTC':
return UTC()
elif str == 'PRC':
return UTC(8)
else:
return None
SBox = [0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B,
0xFE, 0xD7, 0xAB, 0x76, 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0,
0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0, 0xB7, 0xFD, 0x93, 0x26,
0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2,
0xEB, 0x27, 0xB2, 0x75, 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0,
0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84, 0x53, 0xD1, 0x00, 0xED,
0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F,
0x50, 0x3C, 0x9F, 0xA8, 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5,
0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2, 0xCD, 0x0C, 0x13, 0xEC,
0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14,
0xDE, 0x5E, 0x0B, 0xDB, 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C,
0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79, 0xE7, 0xC8, 0x37, 0x6D,
0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F,
0x4B, 0xBD, 0x8B, 0x8A, 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E,
0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E, 0xE1, 0xF8, 0x98, 0x11,
0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F,
0xB0, 0x54, 0xBB, 0x16]
SBoxIV = [0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e,
0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32,
0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49,
0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16,
0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50,
0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05,
0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41,
0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8,
0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89,
0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b,
0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59,
0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d,
0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d,
0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63,
0x55, 0x21, 0x0c, 0x7d]
def _gf2_mul(a: int, b: int, poly: int) -> int:
ans = 0
digit_1 = poly.bit_length() - 1
while b:
if b & 1:
ans = ans ^ a
a, b = a << 1, b >> 1
if a >> digit_1:
a = a ^ poly
return ans
class AES:
def __init__(self, key: bytes):
self.aes_type = len(key) * 8
self._key_r = self._generate_key(key)
def _generate_key(self, key: bytes) -> list:
"""密钥扩展"""
Rcon = [0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36] # 轮常数
Nr, Nk = 10 + (self.aes_type - 128) // 32, self.aes_type // 32 # Nr：轮数，Nk：密钥长度
w = [0 for _ in range(4 * (Nr + 1))] # 轮密钥
for i in range(Nk):
w[i] = int.from_bytes(key[4 * i:4 * i + 4], 'big')
for i in range(Nk, 4 * (Nr + 1)):
temp = w[i - 1]
if i % Nk == 0:
temp = self._split_int(temp) # 拆分成 4x8bit
temp = [SBox[temp[1]] ^ Rcon[i // Nk - 1], SBox[temp[2]],
SBox[temp[3]], SBox[temp[0]]]
temp = self._joint_int(temp) # 合并回 32bit
elif Nk > 6 and i % Nk == 4:
temp = self._split_int(temp) # 拆分成 4x8bit
temp = [SBox[temp[0]], SBox[temp[1]],
SBox[temp[2]], SBox[temp[3]]]
temp = self._joint_int(temp) # 合并回 32bit
w[i] = w[i - Nk] ^ temp
# 将 w 变成 4x4xNr 形式的矩阵
key_r = [[[[0] for _ in range(4)] for _ in range(4)] for _ in range(Nr + 1)]
for t in range(Nr + 1):
for i in range(4):
temp = self._split_int(w[4 * t + i])
for j in range(4):
key_r[t][j][i] = temp[j]
return key_r
@staticmethod
def _split_int(n: int) -> list:
"""拆分 32bit 成 4x8bit"""
return [(n >> 24) & 0xFF, (n >> 16) & 0xFF, (n >> 8) & 0xFF, n & 0xFF]
@staticmethod
def _joint_int(b: list) -> int:
"""合并 4x8bit 成 32bit"""
return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]
def encrypt(self, plaintext: bytes) -> bytes:
"""加密"""
if len(plaintext) % 16 != 0:
v = 16 - len(plaintext) % 16
for _ in range(16 - len(plaintext) % 16):
plaintext += v.to_bytes(1, 'big')
state = [[plaintext[4 * j + i] for j in range(4)] for i in range(4)]
Nr = 10 + (self.aes_type - 128) // 32
state = self._add_key(state, self._key_r[0])
for t in range(1, Nr):
state = self._sub_byte(state, iv=False) # 字节代替
state = self._shift_row(state, iv=False) # 行移位
state = self._mix_col(state, iv=False) # 列混淆
state = self._add_key(state, self._key_r[t]) # 轮密钥加
state = self._sub_byte(state, iv=False)
state = self._shift_row(state, iv=False)
state = self._add_key(state, self._key_r[Nr])
# 将 state 重新排列成一维的形式
ciphertext = bytearray(16)
for i in range(4):
for j in range(4):
ciphertext[4 * j + i] = state[i][j]
return bytes(ciphertext)
def decrypt(self, ciphertext: bytes) -> bytes:
state = [[ciphertext[4 * j + i] for j in range(4)] for i in range(4)]
Nr = 10 + (self.aes_type - 128) // 32
state = self._add_key(state, self._key_r[Nr])
for t in range(1, Nr):
state = self._shift_row(state, iv=True) # 逆行移位
state = self._sub_byte(state, iv=True) # 逆字节代替
state = self._add_key(state, self._key_r[Nr - t]) # 轮密钥加
state = self._mix_col(state, iv=True) # 逆列混淆
state = self._shift_row(state, iv=True)
state = self._sub_byte(state, iv=True)
state = self._add_key(state, self._key_r[0])
plaintext = bytearray(16)
for i in range(4):
for j in range(4):
plaintext[4 * j + i] = state[i][j]
return bytes(plaintext)
@staticmethod
def _add_key(state, k):
for i in range(4):
for j in range(4):
state[i][j] = state[i][j] ^ k[i][j]
return state
@staticmethod
def _shift_row(state, iv):
if not iv:
state[1] = [state[1][1], state[1][2], state[1][3], state[1][0]]
state[2] = [state[2][2], state[2][3], state[2][0], state[2][1]]
state[3] = [state[3][3], state[3][0], state[3][1], state[3][2]]
else:
state[1] = [state[1][3], state[1][0], state[1][1], state[1][2]]
state[2] = [state[2][2], state[2][3], state[2][0], state[2][1]]
state[3] = [state[3][1], state[3][2], state[3][3], state[3][0]]
return state
@staticmethod
def _mix_col(state, iv):
if not iv:
matrix = [[0x02, 0x03, 0x01, 0x01],
[0x01, 0x02, 0x03, 0x01],
[0x01, 0x01, 0x02, 0x03],
[0x03, 0x01, 0x01, 0x02]]
else:
matrix = [[0x0E, 0x0B, 0x0D, 0x09],
[0x09, 0x0E, 0x0B, 0x0D],
[0x0D, 0x09, 0x0E, 0x0B],
[0x0B, 0x0D, 0x09, 0x0E]]
res = [[0 for _ in range(4)] for _ in range(4)]
for i in range(4):
for j in range(4):
temp = 0
for k in range(4):
temp = temp ^ _gf2_mul(matrix[i][k], state[k][j], poly=0x11b)
res[i][j] = temp
return res
@staticmethod
def _sub_byte(state, iv):
for i in range(4):
for j in range(4):
state[i][j] = SBox[state[i][j]] if not iv else SBoxIV[state[i][j]]
return state