Method for secure communication between multiple parties
By using quantum entanglement and quantum measurement, private information is converted into a measurement basis for computation in a public channel, solving the privacy protection problem in multi-party computation. This achieves unconditionally secure privacy-preserving communication and computation, reducing information leakage and dependence on trusted third parties.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE TRUSTEES OF THE STEVENS INST OF TECH
- Filing Date
- 2020-10-16
- Publication Date
- 2026-06-09
AI Technical Summary
Existing technologies struggle to provide unconditionally secure privacy protection in data sharing and processing, especially during multi-party computation and data mining, where there is a risk of information distortion and privacy breaches, requiring trusted third parties or complex encryption processes.
By utilizing quantum entanglement and quantum measurement, and by converting private information into a measurement basis and performing computation in a public channel, information transmission is avoided. Quantum frequency conversion and secret information are used as the measurement basis for entangled photons to achieve unconditionally secure privacy-preserving computation.
It achieves unconditionally secure, privacy-preserving communication and computation, avoids information leakage, reduces reliance on trusted third parties and complex encryption steps, and improves computational efficiency.
Smart Images
Figure CN116366242B_ABST
Abstract
Claims
1. A method for secure communication between multiple parties, comprising the following steps: Transform private information into a measurement basis; Multiple sets of entangled photons are generated, wherein each photon in the multiple sets of entangled photons represents a corresponding optical pulse or a quantum mechanical superposition of optical pulses; The multiple sets of entangled photons are transmitted to multiple communication parties in a manner that the multiple sets of entangled photons are transmitted one at a time, wherein each of the multiple communication parties receives photons from each of the multiple sets of entangled photons in the order in which the multiple sets of entangled photons are transmitted; The measurement base is applied to the optical pulse, and the photons are detected on the measurement base, so that corresponding data is obtained for each of the plurality of communicating parties in the order in which the optical pulses are received; and Secure communication is calculated by comparing the corresponding data of each of the plurality of communicating parties.
2. The method according to claim 1, wherein, The application steps are performed independently by each of the plurality of communicating parties.
3. The method according to claim 1 further includes the step of establishing rules for implementing the transformation step.
4. The method according to any one of claims 1 to 3, further comprising the step of continuously transmitting a reference signal to each of the plurality of communicating parties, the reference signal having a predetermined period.
5. The method according to claim 4, wherein, For each period of the reference signal, an optical pulse is transmitted to each of the plurality of communicating parties.
6. The method according to any one of claims 1 to 3, wherein, The calculation steps are performed publicly.
7. The method according to any one of claims 1 to 3, wherein, The private information never leaves the multiple communicating parties.
8. The method according to any one of claims 1 to 3, wherein, The calculation steps include determining whether the corresponding private information is the same for each of the plurality of communicating parties.
9. The method according to any one of claims 1 to 3, wherein, The calculation step includes evaluating the inequalities between the corresponding private information of each of the plurality of communicating parties.
10. The method according to any one of claims 1 to 3, wherein, The measurement basis includes photon arrival time.
11. The method according to claim 10, wherein, The photon arrival time includes discrete time blocks.
12. The method according to any one of claims 1 to 3, wherein, The application steps include subjecting the photons to a quantum measurement module.
13. The method according to claim 12, wherein, The quantum measurement module includes a sum-frequency generator.
14. The method according to any one of claims 1 to 3, wherein, The private information is the password, authentication code, data string, value, or private data group required for multi-party computation.
15. The method of claim 14, further comprising the step of verifying the shared knowledge of the private information without transmitting the private information.
16. The method according to any one of claims 1 to 3, wherein, The computational steps constitute zero-knowledge data processing.
17. The method according to any one of claims 1 to 3, wherein, The computational steps involve data mining.
18. The method according to any one of claims 1 to 3, wherein, The measurement base includes the spectral mode, temporal mode, or spectral-temporal mode of the photon.
19. The method according to any one of claims 1 to 3, wherein, The photon in each of the plurality of entangled photons is received at the same time by the corresponding party in the plurality of communicating parties.
20. The method according to any one of claims 1 to 3, wherein, The photon in each of the plurality of entangled photons is received at different times by the corresponding party of the photon in the plurality of communication parties.
21. The method according to any one of claims 1 to 3, wherein, The step of transforming private information into a measurement basis includes performing information calculations such that the context of the secure communication is not limited to numbers, and wherein the step of performing information calculations includes performing at least one of addition, subtraction, multiplication, and division.
22. The method according to claim 21, wherein, Each of the multiple communicating parties uses a private computational algorithm to process public data and transforms the results into a measurement basis, thereby comparing the computational algorithms among the communicating parties.
23. A method for secure communication between multiple parties, comprising the following steps: Transform private information into a measurement basis; Multiple sets of entangled photons are generated, wherein each photon in the multiple sets of entangled photons represents a corresponding optical pulse or a quantum mechanical superposition of optical pulses; The multiple sets of entangled photons are transmitted to multiple communication parties in a manner that the multiple sets of entangled photons are transmitted one at a time, wherein each of the multiple communication parties receives photons from each of the multiple sets of entangled photons in the order in which the multiple sets of entangled photons are transmitted; Based on the order in which the multiple groups of entangled photons are transmitted to the multiple communicating parties, an index number is assigned to each group of entangled photons, thereby associating the light pulses corresponding to photons from the same group of entangled photons with the same index number; The measurement base is applied to the optical pulse, and the photons are detected on the measurement base, so that corresponding data is obtained for each of the plurality of communicating parties in the order in which the optical pulses are received; and A corresponding index list is generated for each of the plurality of communicating parties from the corresponding data.
24. The method according to claim 23, wherein, The application steps are performed independently by each of the plurality of communicating parties.
25. The method of claim 23, further comprising the step of establishing rules for implementing the transformation step.
26. The method according to any one of claims 23 to 25, further comprising the step of continuously transmitting a reference signal to each of the plurality of communicating parties, the reference signal having a predetermined period.
27. The method according to claim 26, wherein, For each period of the reference signal, an optical pulse is transmitted to each of the plurality of communicating parties.
28. The method according to any one of claims 23 to 25, further comprising the step of publishing the corresponding list of related indexes.
29. The method according to any one of claims 23 to 25, wherein, The private information never leaves the multiple communicating parties.
30. The method according to any one of claims 23 to 25, wherein, The measurement basis includes photon arrival time.
31. The method according to claim 30, wherein, The photon arrival time includes discrete time blocks.
32. The method according to any one of claims 23 to 25, wherein, The application steps include subjecting the photons to a quantum measurement module.
33. The method according to claim 32, wherein, The quantum measurement module includes a sum-frequency generator.
34. The method according to any one of claims 23 to 25, wherein, The private information is the password, authentication code, data string, value, or private data group required for multi-party computation.
35. The method according to claim 34, wherein, It also includes a step of verifying the shared knowledge of the private information without transmitting the private information.
36. The method according to any one of claims 23 to 25, wherein, The measurement base includes the spectral mode, temporal mode, or spectral-temporal mode of the photon.
37. The method according to any one of claims 23 to 25, wherein, The photon in each of the plurality of entangled photons is received at the same time by the corresponding party in the plurality of communicating parties.
38. The method according to any one of claims 23 to 25, wherein, The photon in each of the plurality of entangled photons is received at different times by the corresponding party of the photon in the plurality of communication parties.
39. The method according to any one of claims 23 to 25, wherein, The step of transforming private information into a measurement basis includes performing information calculations such that the context of the secure communication is not limited to numbers, and wherein the step of performing information calculations includes performing at least one of addition, subtraction, multiplication, and division.
40. The method according to claim 39, wherein, Each of the multiple communicating parties uses a private computational algorithm to process public data and transforms the results into a measurement basis, thereby comparing the computational algorithms among the communicating parties.
41. The method according to claim 24 or 25, wherein, The corresponding related index list of the communicating parties is analyzed to identify the statistical relationships between the related index lists, thereby estimating the relationships between the private information.
42. The method according to claim 41, wherein, The private information corresponds to a private number held by each communication party, and the statistical relationship includes the conditional probability of the relevant index list reported by one communication party against the relevant index list of the other party.
43. The method according to claim 42, wherein, The statistical relationships are used to determine the order of numbers held by each communication party, but the values of the private numbers are not disclosed during processing.