This provides a much weaker guarantee of authenticity than the digital signing of messages, though.

但是，它所提供的真实性保障要比消息数字签名弱很多。

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PGP public key: Many software releases are digitally signed with PGP to give some guarantee of authenticity.

PGP 公钥：许多软件版本都使用 PGP 数据签名以便提供某种真实性的保证。

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There is no guarantee of the quality and authenticity of products. Neither Taobao nor consumers are certain of sellers' locations.

他说，“产品的质量和真实性没有任何保证，淘宝和消费者都无法了解买家的真实地址，监察机构也不知道。

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Additionally, they were a way to guarantee authenticity and even served as antitampering devices.

WSJ: The Ur-Metropolis | Uruk | Pergamon Museum | By A.J. Goldmann

The company employs about 250 auction specialists, curators and appraisers to guarantee authenticity of items up for bid.

FORBES: Disrupting The World's Great Auction Houses