{"id":5926,"date":"2019-12-05T13:13:03","date_gmt":"2019-12-05T11:13:03","guid":{"rendered":"https:\/\/welaikaadv.site\/toothpic\/?page_id=5926"},"modified":"2023-05-29T09:44:30","modified_gmt":"2023-05-29T07:44:30","slug":"technology","status":"publish","type":"page","link":"https:\/\/welaikaadv.site\/toothpic\/technology\/","title":{"rendered":"Technology"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\"technology1\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Camera fingerprints<\/strong><\/span><\/h2>
Your smartphone is unique because its camera is<\/span><\/strong><\/em><\/h6>

Every picture taken by a smartphone contains an invisible trace<\/strong>, which is called PRNU (Photo-Response Non-Uniformity). This trace is unique<\/strong> – making every camera sensor different from each other – just like a fingerprint. This fingerprint is also completely random<\/strong>, because it is intrinsic to manufacturing processes of sensors. Being random means that the producers of sensors and smartphones cannot manipulate it<\/strong>, or clone it in a different sensor, making this characteristic a Physical Unclonable Function<\/strong> (PUF) by design.<\/span><\/p>

ToothPic<\/strong> exploits the camera sensor fingerprint to derive a secret that ties keys to the sensor hardware<\/span><\/i><\/h6>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\tWHITE PAPER<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Asymmetric Cryptography<\/strong><\/span><\/h2>
Your secret is only on your smartphone<\/i><\/strong><\/span><\/h6>

With asymmetric cryptography a user has a private key<\/strong> that should be kept safe and a corresponding public key<\/strong> shared with everyone. Operations performed with one of the keys can only be verified using the corresponding other key. For user authentication a simple protocol can be established: the server sends a challenge message<\/strong> to the user, the user signs<\/strong> the message using the private key, the server verifies the signature<\/strong> with the user\u2019s public key. Since there is no shared secret between the server and users, there is no single point of failure<\/strong> at the server side. The only requirement is to protect<\/strong> each users\u2019 private key. Due to its enhanced security, this is the solution chosen by most recent authentication protocols<\/strong> like FIDO.<\/span><\/p>

ToothPic<\/strong> keeps private keys safer than competing technologies, since they are never stored on the device but tied to its hardware.<\/span><\/i><\/span><\/h6>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\twhite paper<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Secure Computation<\/strong><\/span><\/h2>
Do not expose your secret to malware<\/i><\/span><\/strong><\/h6>

As users of Internet-based services, we know we are constantly subject to attacks<\/strong> aimed at stealing our secret keys. Also the information stored<\/strong> on your smartphone can be subject to attacks. Indeed, malicious software<\/strong> may be installed on it, and it may read and use sensitive information. For this reason, the best smartphone-based cryptographic systems do not store data and perform calculations like any other app does — they use secure computation environments<\/strong> that guarantee application integrity and data confidentiality. This can be done using e.g. the trusted execution environment<\/strong> or whitebox cryptography techniques<\/strong>.<\/p>

ToothPic<\/strong> provides maximum protection of the secret on your smartphone, as it performs computations in a secure environment – <\/span><\/i>and<\/span><\/em> unlocks it upon sensor hardware verification.<\/span><\/i><\/span><\/h6>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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UNLOCK<\/strong> YOUR SMARTPHONE'S POTENTIAL<\/strong><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\tGET A DEMO<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Camera fingerprints Your smartphone is unique because its camera is Every picture taken by a smartphone contains an invisible trace, which is called PRNU (Photo-Response Non-Uniformity). This trace is unique – making every camera sensor different from each other – just like a fingerprint. This fingerprint is also completely random, because it is intrinsic to …<\/p>\n","protected":false},"author":1,"featured_media":5799,"parent":0,"menu_order":20,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0},"_links":{"self":[{"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/pages\/5926"}],"collection":[{"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/comments?post=5926"}],"version-history":[{"count":49,"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/pages\/5926\/revisions"}],"predecessor-version":[{"id":14846,"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/pages\/5926\/revisions\/14846"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/media\/5799"}],"wp:attachment":[{"href":"https:\/\/welaikaadv.site\/toothpic\/wp-json\/wp\/v2\/media?parent=5926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}