What is quantum-encrypted walkie-talkie communication?
release date:2025-10-28
Quantum-encrypted communication applies quantum encryption principles, leveraging carrier 4G/5G networks as the carrier medium. Utilizing a quantum security service platform and quantum security cards, it achieves encryption between POC radio calls.
First, “one session, one key”—each communication session undergoes key negotiation, ensuring a unique key per session that expires after use and is never reused.
Second, quantum cryptography is “unbreakable.” It leverages the secure properties of quantum physics to generate truly random keys that protect business information, rendering eavesdropping and decryption attempts futile.
Quantum encryption utilizes the properties of quantum physics to perform encryption tasks. Its most significant and mature application is Quantum Key Distribution (QKD).
QKD employs photons (the smallest units of light) as information carriers to transmit a random binary sequence (a string composed of 0s and 1s) between communicating parties. This sequence serves as the shared key required for subsequent symmetric encryption communications (such as AES).
First, the binary sequence generated and transmitted by QKD is completely random, and neither party knows its specific content. Only after communication via an open channel (such as phone or email) can they determine which bits will form the shared key. This eliminates the risks associated with pre-shared keys.
Second, QKD leverages quantum mechanical properties of photons, such as uncertainty and non-clonability. Any third-party attempt to eavesdrop or interfere with photon transmission would alter the photons' state. Such alterations are detectable and can be excluded by the communicating parties. This guarantees that the transmission remains free from eavesdropping or tampering.
Therefore, QKD achieves unconditional secure key distribution—it relies solely on physical laws, not mathematical assumptions or computational complexity. Even if more powerful computers or algorithms emerge in the future, they cannot break QKD.
Quantum-encrypted communication features two key characteristics:
First, “one session, one key”—each communication session undergoes key negotiation, ensuring a unique key per session that expires after use and is never reused.
Second, quantum cryptography is “unbreakable.” It leverages the secure properties of quantum physics to generate truly random keys that protect business information, rendering eavesdropping and decryption attempts futile.
What is quantum encryption?
Quantum encryption utilizes the properties of quantum physics to perform encryption tasks. Its most significant and mature application is Quantum Key Distribution (QKD).
QKD employs photons (the smallest units of light) as information carriers to transmit a random binary sequence (a string composed of 0s and 1s) between communicating parties. This sequence serves as the shared key required for subsequent symmetric encryption communications (such as AES).
QKD possesses two critical characteristics:
First, the binary sequence generated and transmitted by QKD is completely random, and neither party knows its specific content. Only after communication via an open channel (such as phone or email) can they determine which bits will form the shared key. This eliminates the risks associated with pre-shared keys.
Second, QKD leverages quantum mechanical properties of photons, such as uncertainty and non-clonability. Any third-party attempt to eavesdrop or interfere with photon transmission would alter the photons' state. Such alterations are detectable and can be excluded by the communicating parties. This guarantees that the transmission remains free from eavesdropping or tampering.
Therefore, QKD achieves unconditional secure key distribution—it relies solely on physical laws, not mathematical assumptions or computational complexity. Even if more powerful computers or algorithms emerge in the future, they cannot break QKD.
Technical support: Longcai Technology
