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(Phys.org) —Cryptography – the art and science of providing secure communications – typically employs three methods to authenticate users and prevent data theft: secret key (symmetric) cryptography, which uses a single key for both encryption and decryption; public key (asymmetric) cryptography which uses different keys for encryption and decryption; and hash functions, which employs a mathematical transformation to irreversibly encrypt information. That being said, quantum cryptography relies on the laws of quantum mechanics to secure private information exchange, specifically through quantum key distribution (QKD) of a random bit sequence, in which an attempt to eavesdrop on the encoded quantum states causes a detectable disturbance in the communications signal. Historically, high-precision monitoring of the disturbance decreases efficiency – but recently, scientists at The University of Tokyo, Stanford University and National Institute of Informatics (Tokyo) proposed a QKD protocol based on an entirely different principle.
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(Phys.org) —Cryptography – the art and science of providing secure communications – typically employs three methods to authenticate users and prevent data theft: secret key (symmetric) cryptography, which uses a single key for both encryption and decryption; public key (asymmetric) cryptography which uses different keys for encryption and decryption; and hash functions, which employs a mathematical transformation to irreversibly encrypt information. That being said, quantum cryptography relies on the laws of quantum mechanics to secure private information exchange, specifically through quantum key distribution (QKD) of a random bit sequence, in which an attempt to eavesdrop on the encoded quantum states causes a detectable disturbance in the communications signal. Historically, high-precision monitoring of the disturbance decreases efficiency – but recently, scientists at The University of Tokyo, Stanford University and National Institute of Informatics (Tokyo) proposed a QKD protocol based on an entirely different principle.
Zazzle Space market place
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