Notice that these “serial numbers” are very similar to the ones we embedded in the single-use credentials above. Each Resource (website) can keep a list of each SN value that it sees, and sites can reject any “show” that repeats a serial number. As long as the User never repeats a counter (and the PRF output is long enough), serial numbers should be unlikely to repeat. However, repetition becomes inevitable if the User ever “cheats” and tries to show the same credential N+1 times.
Фото: Григорий Сысоев / РИА Новости
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比如，巴迪高设立了独特的工艺标准，行业中，对一次性内裤的腰围普遍允许±0.5的浮动，而巴迪高只接受正向公差，不允许随意放宽。“腰围大一点，不会特别影响消费者的体验感。但小一点的话，就会特别勒，因为一次性内裤的布料和正常内裤的弹性不一样。” 朱耀解释道，这一要求也成为不少合作工厂感到最难适应的地方。，详情可参考搜狗输入法下载
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