Traditional methods of key distribution for encrypting data use public key cryptography, based on complex mathematical one-way functions. These one-way functions are easy to calculate in one direction but require much more time (of the order of few thousand years) to reverse them, by conventional computers. As an example, it is very easy for a conventional computer to calculate the product of two large prime numbers, but it is virtually impossible to obtain prime factors of a very large integer. However, the rapid advancement in Quantum Computing threatens this very basic assumption and makes the present method of key distribution susceptible to eavesdropping, as the mathematical problems on which today's public key cryptography is based can be solved in a very small-time using quantum computers.

Unlike traditional cryptographic techniques (where security is based on unproven mathematical assumptions), the security of quantum cryptography is based on the laws of physics. The security of quantum key distribution depends on the fundamental principles of nature on which infinite computational power, new attack algorithms and the arrival of quantum computers will not matter. Information is encoded in quantum states or Q-bits by quantum communication. Q-bits cannot be cloned or measured without including detectable anomalies.

Any intervention or tempering in quantum channel will get detected and leads to destruction of the key at both Alice and Bob Nodes.
Supports DPS (Differential Phase Shift) and COW (Coherent One Way) protocols.
Hardware-based (FPGA) key processing for high key distribution rate
True Random Number Generator (TRNG) in both Alice & Bob nodes
Performance monitoring and Alarm generation for errors
Provide Variable Key Length on request
RESTful API for Key distribution
Key exchange through Ethernet & USB interfaces
Supports > 100 Km Single Mode Fiber (SMF) for the Quantum Channel
Support Local Management Interface (LMI)
Compact & Standard 19” Rack mountable
Graphical User Interface (GUI) to control and operate the CDOT-QKD solution

Sr. No.	Specification Description	Value
1	Secure Key Rate	>2Kbps for DPS PROTOCOL >1Kbps for COW PROTOCOL
2	QBER	<5%
3	Key transfer Interface	USB/Ethernet
4	Quantum Wavelength	C-Band @ITU-T DWDM grid
5	Quantum Channel Loss (Max)	16dB for DPS PROTOCOL
6	Operating Temperature	10 to 30 °C
7	Detector Type	Single Photon Avalanche Detector
8	Power Supply	220VAC@50Hz
9	Maximum Power Consumption	250W (ALICE) 250W (BOB)
10	Mechanical Dimension	19inch Rack mountable

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