40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
import base64
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import hashlib
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import hmac
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import struct
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import sys
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import time
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from app.log import logger
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class TwoFactorAuth:
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def __init__(self, code_or_secret: str):
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if code_or_secret and len(code_or_secret) > 16:
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self.code = None
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self.secret = code_or_secret
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else:
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self.code = code_or_secret
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self.secret = None
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def __calc(self, secret_key: str) -> str:
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try:
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input_time = int(time.time()) // 30
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key = base64.b32decode(secret_key)
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msg = struct.pack(">Q", input_time)
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google_code = hmac.new(key, msg, hashlib.sha1).digest()
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o = (
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google_code[19] & 15
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if sys.version_info > (2, 7)
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else ord(str(google_code[19])) & 15
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)
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google_code = str(
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(struct.unpack(">I", google_code[o : o + 4])[0] & 0x7FFFFFFF) % 1000000
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)
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return f"0{google_code}" if len(google_code) == 5 else google_code
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except Exception as e:
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logger.error(f"计算动态验证码失败：{str(e)}")
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return None
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def get_code(self) -> str:
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return self.code or self.__calc(self.secret)
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