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中级

JWT Claims验证

未完成
中级参考 代码结构已给出，请填写 ____ 处 
def solve():
    from pyodide.http import open_url
    from io import StringIO
    tokens_csv = open_url(____).read()
    import pandas as pd
    from io import StringIO
    tokens = pd.read_csv(StringIO(____))
    NOW = ____
    EXPECTED_ISS = '____'
    def validate_claims(____):
        errors = []
        if claims.get(____) < now: errors.append(____)
        if claims.get(____) > now: errors.append(____)
        if '____' not in claims or not claims['____']: errors.append(____)
        return errors
    test_claims = [
        {'____':'____','____':NOW-____,'____':NOW+____},
        {'____':'____','____':NOW-____,'____':NOW-____},
        {'____':NOW-____,'____':NOW+____},
        {'____':'____','____':NOW+____,'____':NOW+____},
    ]
    for c in test_claims:
        errs = validate_claims(____)
        print(____)

示例

输入
solve()
期望输出
sub=1: VALID
sub=2: ['token expired']
sub=?: ['missing sub']
sub=4: ['iat in future']
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