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Choosing E91/BB84 basis states and angles
The fundamental idea of $S\leq 2$ remains the same. However, when you design the scheme, you ideally want two things:
When you're measuring the generate key, the two parties should be using the same ...
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What authentication protocol to use for BB84 and other QKD protocols?
In classical cryptography, the Diffie-Hellman key exchange is also susceptible to a man-in-the-middle attack, and to get around that, we use a digital signature algorithm, like RSA or ECDSA.
You can ...
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