Which of the following represents a cryptographic solution where the encrypted stream cannot be
captured by a sniffer without the integrity of the stream being compromised?
A.
Elliptic curve cryptography.
B.
Perfect forward secrecy.
C.
Steganography.
D.
Quantum cryptography.
I believe very well that Quantum cryptography is all about key distribution so this question and answer doesn’t clear enough please can you explain
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Quantum Cryptography is based on quantum physics and photons. I don’t profess to know Quantum Physics but I have worked with Lasers and I do know something about light.
Photons spin up or down and or side to side and emit light. These light emissions can be assigned a value (1’s and 0’s). It is then possible to convert a stream of photons into an encryption key. Two entities can exchange photon streams identifying and validating the key.
So why can’t the stream be captured without detection? Because photons change direction when read or measured.
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