منابع مشابه
Several Weak Bit-Commitments Using Seal-Once Tamper-Evident Devices
Following both theoretical and practical arguments, we construct UC-secure bit-commitment protocols that place their strength on the sender’s side and are built using tamper-evident devices, e.g., a type of distinguishable, sealed envelopes. We show that by using a second formalisation of tamper-evident distinguishable envelopes we can attain better security guarantees, i.e., EUC-security. We s...
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A quantum string seal encodes the value of a (bit) string as a quantum state in such a way that everyone can extract a non-negligible amount of available information on the string by a suitable measurement. Moreover, such measurement must disturb the quantum state and is likely to be detected by an authorized verifier. In this way, the intactness of the encoded quantum state plays the role of a...
متن کاملUC and EUC Weak Bit-Commitments Using Seal-Once Tamper-Evidence
Based on tamper-evident devices, i.e., a type of distinguishable, sealed envelopes, we put forward weak bit-commitment protocols which are UC-secure. These commitments are weak in that it is legitimate that a party could cheat. Unlike in several similar lines of work, in our case, the party is not obliged to cheat, but he has ability to cheat if and when needed. The empowered party is the sende...
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We show how quantum tamper-proof devices (QTPD) can be used to attack and to develop security protocols. On one hand, we prove that it is possible to transfer proofs of zero-knowledge protocols using QTPD’s. This attack can be extended to other security schemes where privacy is important. On the other hand, we present a fair contract signing protocol using QTPD’s where there is no communication...
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ژورنال
عنوان ژورنال: Physical Review Applied
سال: 2016
ISSN: 2331-7019
DOI: 10.1103/physrevapplied.5.014001