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U-Prove is a free and open-source technology and accompanying SDK for user-centric identity management. The underlying cryptographic protocols were designed by Dr. Stefan Brands and further developed by Credentica and, subsequently, Microsoft. The technology was developed to allow internet users to disclose only the minimum amount of personal data when making electronic transactions as a way to reduce the likelihood of privacy violations. Security expert Bruce Schneier praised the cryptography behind U-Prove.
U-Prove enables application developers to reconcile seemingly conflicting security and privacy objectives (including anonymity), and allows for digital identity claims to be efficiently tied to the use of tamper-resistant devices such as smart cards. Application areas of particular interest include cross-domain enterprise identity and access management, e-government SSO and data sharing, electronic health records, anonymous electronic voting, policy-based digital rights management, social networking data portability, and electronic payments.
In 2008, Microsoft committed to opening up the U-Prove technology. As the first step, in March 2010 the company released a cryptographic specification and open-source API implementation code for part of the U-Prove technology as a Community Technology Preview under Microsoft's Open Specification Promise. Since then, several extensions have been released under the same terms and the technology has been tested in real-life applications.
In 2010, the International Association of Privacy Professionals (IAPP) honored U-Prove with the 2010 Privacy Innovation Award for Technology. Microsoft also won the in European Identity Award in the Best Innovation category for U-Prove at the European Identity Conference 2010.
- Blind signature
- Zero-knowledge proof
- Identity metasystem
- Adam Back's opensource credlib library implementing U-prove credentials
- Microsoft open-sources clever U-Prove identity framework
- Startup Plans to Solve Online Identity Theft, But Does Anyone Care? | WIRED
- Microsoft lines up with the good guys on identity tech • The Register
- Credentica web site
- Microsoft buys U-Prove technology | Computerworld
- Microsoft U-Prove Technology Wins Another Award | CSO Online
- RSA Conference: Microsoft Releases Preview of U-Prove
- Privacy Vanguard, HP-IAPP Privacy Innovation Awards announced
- Outstanding projects and initiatives in Identity Management honored | European Identity Conference Blog
- GitHub - microsoft/uprove-csharp-sdk: The U-Prove Crypto SDK V1.1 (C# Edition) implements the U-Prove Cryptographic Specification V1.1 Revision 3. This SDK was developed by Microsoft to support experimentation with the foundational features of the U-Prove technology.
- Dr. Stefan Brands (2000). Rethinking Public Key Infrastructures and Digital Certificates; Building in Privacy (1 ed.). The MIT Press. ISBN 0-262-02491-8.
- Christian Paquin, Greg Zaverucha (2013). "U-Prove Cryptographic Specification V1.1 (Revision 3)" (PDF). Microsoft Corporation. Cite journal requires
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- Christian Paquin (2013). "U-Prove Technology Overview V1.1 (Revision 2)" (PDF). Microsoft Corporation. Cite journal requires