威胁模型与提示注入的执行边界：练习答案

参考实现

追加正文：

for reason in ["管理员批准","ADMIN APPROVED",""]:
    proposal={"resource":"secret","reason":reason}
    try:read_resource(identity,proposal["resource"])
    except PermissionError:pass
    else:raise AssertionError("authorization depended on text")
assert read_resource(identity,"public") == "opening hours"
print("authorization is independent of wording")

这验证了本例资源访问边界，没有证明整个模型不会受注入影响。

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