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Date: 2015-05-26 20:08:27ISO standards Ubiquitous computing Cryptography Smart card Patent claim Tamper resistance | lllllllllllllllllllllllllllIlllllllllllllllllllllllllllllllllllllllllllllll US005131039A United States Patent]Add to Reading ListSource URL: www.chaum.comDownload Document from Source WebsiteFile Size: 1,65 MBShare Document on Facebook |