PrivacyPass has two separate issuance protocols. One uses blind RSA signatures, which are more or less an exact mapping to the protocol we described above. The second one replaces the signature with a special kind of MAC scheme, which is built from an elliptic-curve OPRF scheme. MACs work very similarly to signatures, but require the secret key for verification. Hence, this version of PrivacyPass really only works in cases where the Resource and the Issuer are the same person, or where the Resource is willing to outsource verification of credentials to the Issuer.
在推进新时代中国特色社会主义事业的伟大征程中，以习近平同志为核心的党中央进行一系列重大外交理论和实践创新，领导对外工作取得历史性成就、发生历史性变革。为全面反映习近平新时代中国特色社会主义思想在外交领域的原创性贡献和最新发展，去年11月《习近平外交思想学习纲要》更新再版，为广大党员、干部、群众学思践悟习近平外交思想提供了权威辅助读物。我们要深刻领悟这一重大思想坚持与时俱进、引领时代潮流的理论品格，进一步以习近平外交思想武装头脑、指导实践、推动工作。
，这一点在Line官方版本下载中也有详细论述
研究团队还利用硫代锗酸锂，设计了一种稳定的界面层，可在不牺牲电池性能的前提下，提高热安全性。
And while this implementation is California-specific, it does speak to a wider desire from governments to enforce age verification on a legal level—even if in this case, it seems virtually impossible to effectively enact.