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| Content Provider | ACM Digital Library |
|---|---|
| Author | Clarke, Dwaine Torlak, Emina Gassend, Blaise Devadas, Srinivas Dijk, Marten Van Tuyls, Pim |
| Copyright Year | 2008 |
| Abstract | The cryptographic protocols that we use in everyday life rely on the secure storage of keys in consumer devices. Protecting these keys from invasive attackers, who open a device to steal its key, is a challenging problem. We propose controlled physical random functions (CPUFs) as an alternative to storing keys and describe the core protocols that are needed to use CPUFs. A physical random functions (PUF) is a physical system with an input and output. The functional relationship between input and output looks like that of a random function. The particular relationship is unique to a specific instance of a PUF, hence, one needs access to a particular PUF instance to evaluate the function it embodies. The cryptographic applications of a PUF are quite limited unless the PUF is combined with an algorithm that limits the ways in which the PUF can be evaluated; this is a CPUF. A major difficulty in using CPUFs is that you can only know a small set of outputs of the PUF—the unknown outputs being unrelated to the known ones. We present protocols that get around this difficulty and allow a chain of trust to be established between the CPUF manufacturer and a party that wishes to interact securely with the PUF device. We also present some elementary applications, such as certified execution. |
| Starting Page | 1 |
| Ending Page | 22 |
| Page Count | 22 |
| File Format | |
| ISSN | 10949224 |
| e-ISSN | 15577406 |
| DOI | 10.1145/1284680.1284683 |
| Volume Number | 10 |
| Issue Number | 4 |
| Journal | ACM Transactions on Information and System Security (TISSEC) |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2008-01-22 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Certified execution Physical random function Physical security Physical unclonable function Trusted computing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science Safety, Risk, Reliability and Quality |
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