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Quantum Readout Of PUFs
Quantum readout is a method to verify the authenticity of an object. The method is secure provided that the object cannot be copied or physically emulated. Hands-off versus hands-on authentication of objects When authenticating an object, one can distinguish two cases. * Hands-on authentication: The object is fully under the control of the verifier. The verifier can see if the object is of the correct type, size, weight etc.. For example, he can see the difference between a real tooth and a hologram representing the tooth. * Hands-off authentication: The verifier does not have full control. For example, he has line-of-sight but cannot touch the object. In the hands-on scenario, physical unclonable functions (PUFs) of various types can serve as great authentication tokens. Their physical unclonability, combined with the verifier's ability to detect spoofing, makes it exceedingly hard for an attacker to create an object that will pass as a PUF clone. However, hands-on authentication ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Unclonable Function
A physical unclonable function (sometimes also called physically unclonable function, which refers to a weaker security metric than a physical unclonable function), or PUF, is a physical object that for a given input and conditions (challenge), provides a physically defined "digital fingerprint" output (response) that serves as a unique identifier, most often for a semiconductor device such as a microprocessor. PUFs are often based on unique physical variations occurring naturally during semiconductor manufacturing.Kamal, K.; Mureasan, "Mixed-signal physically unclonable function with CMOS capacitive cells" IEEE Access Journal, 2019. A PUF is a physical entity embodied in a physical structure. Today, PUFs are usually implemented in integrated circuits and are typically used in applications with high-security requirements, more specifically cryptography. History Early references about systems that exploit the physical properties of disordered systems for authentication purposes date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impostor
An impostor (also spelled imposter) is a person who pretends to be somebody else, often through means of disguise. Their objective is usually to try to gain financial or social advantages through social engineering, but also often for purposes of espionage or law enforcement. Notable impostors False nationality claims * Princess Caraboo (1791–1864), Englishwoman who pretended to be a princess from a fictional island * Korla Pandit (1921–1998), African-American pianist/organist who pretended to be from India * George Psalmanazar (1679–1763), who claimed to be from Formosa False minority national identity claims * Joseph Boyden (born 1966) Canadian writer who falsely claimed First Nations ancestry * H. G. Carrillo (1960–2020), American writer and assistant professor of English at George Washington University who claimed to be a Cuban immigrant despite having been born in Detroit to American parents. * Asa Earl Carter (1925–1979), who under the alias of supposedly Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Unclonable Function
A physical unclonable function (sometimes also called physically unclonable function, which refers to a weaker security metric than a physical unclonable function), or PUF, is a physical object that for a given input and conditions (challenge), provides a physically defined "digital fingerprint" output (response) that serves as a unique identifier, most often for a semiconductor device such as a microprocessor. PUFs are often based on unique physical variations occurring naturally during semiconductor manufacturing.Kamal, K.; Mureasan, "Mixed-signal physically unclonable function with CMOS capacitive cells" IEEE Access Journal, 2019. A PUF is a physical entity embodied in a physical structure. Today, PUFs are usually implemented in integrated circuits and are typically used in applications with high-security requirements, more specifically cryptography. History Early references about systems that exploit the physical properties of disordered systems for authentication purposes date ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Key Distribution
Quantum key distribution (QKD) is a secure communication method which implements a cryptographic protocol involving components of quantum mechanics. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages. It is often incorrectly called quantum cryptography, as it is the best-known example of a quantum cryptographic task. An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented that dete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptographic Primitives
Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, information security, electrical engineering, digital signal processing, physics, and others. Core concepts related to information security ( data confidentiality, data integrity, authentication, and non-repudiation) are also central to cryptography. Practical applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications. Cryptography prior to the modern age was effectively synonymous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Cryptography
Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography is quantum key distribution which offers an information-theoretically secure solution to the key exchange problem. The advantage of quantum cryptography lies in the fact that it allows the completion of various cryptographic tasks that are proven or conjectured to be impossible using only classical (i.e. non-quantum) communication. For example, it is impossible to copy data encoded in a quantum state. If one attempts to read the encoded data, the quantum state will be changed due to wave function collapse ( no-cloning theorem). This could be used to detect eavesdropping in quantum key distribution (QKD). History In the early 1970s, Stephen Wiesner, then at Columbia University in New York, introduced the concept of quantum conjugate coding. His seminal paper titled "Conjugate Coding" was rejected by the IEEE Informat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
