Distributed trust mechanism for decentralized networks

• US 20030028585A1
• Filed: 06/07/2002
• Published: 02/06/2003
• Est. Priority Date: 07/31/2001
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Yeager, William J., Chen, Rita Y.
• Granted Patent: US 7,222,187 B2
• Time in Patent Office: Days
• US Class Current: 709/201
• CPC Class Codes: G06F 9/4416 Network booting; Remote initial program loading [RIPL]
• CPC Class Codes: G06F 9/544 Buffers; Shared memory; Pipes
• CPC Class Codes: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/50 Address allocation
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 63/102 Entity profiles
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/1046 Joining mechanisms
• CPC Class Codes: H04L 67/1057 involving pre-assessment of levels of reputation of peers
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

Embodiments of a decentralized, distributed trust mechanism that may be used in various networking platforms including peer-to-peer platforms, to implement trust relationships between and among nodes on a network and to implement trust relationships between nodes and content and data (codat). Protocols and methods may be provided for determining, disseminating and updating trust. For participating nodes, trust may be biased towards data relevance. Trust may have multiple components or factors, which may include node confidence, codat confidence and risk components, and embodiments may provide for the inclusion of factors of trust based on groups of nodes'"'"' common interests and/or group content relevance. Embodiments may be used for a variety of applications in which trust may be based on the norm for social interaction between participating nodes.

Claims

1. A system comprising:

a plurality of nodes;

wherein the plurality of nodes are each configured to participate on a network with others of the plurality of nodes in areas of interest and to exchange codats relevant to the areas of interest with the other nodes, wherein a codat is computer-representable content or data;

wherein one of the plurality of nodes is configured to;

receive one or more codats relevant to a particular area of interest from one of the other nodes; and

determine trust in the other node as a provider of codats relevant to the particular area of interest from the one or more codats received from the other node and relevant to the particular area of interest.

2. The system as recited in claim 1, wherein, to determine trust in the other node as a provider of codats, the node is further configured to:

determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node; and

determine the trust in the other node from the determined codat confidence in the one or more codats.

3. The system as recited in claim 2, wherein, to determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the node is further configured to determine the codat confidence of each of the codats from the relevance of each of the codats to the particular area of interest.

4. The system as recited in claim 2, wherein, to determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the node is further configured to:

determine popularity of each of the codats among the plurality of nodes;

determine relevance of each of the codats to the particular area of interest; and

determine the codat confidence of each of the codats from the popularity of the particular codat and the relevance of the particular codat.

5. The system as recited in claim 2, wherein, to determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the node is further configured to:

determine confidence in the other node as a provider of codats in the particular area of interest; and

determine the codat confidence in the one or more codats from the determined confidence in the other node.

6. The system as recited in claim 5, wherein, to determine confidence in the other node as a provider of codats in the particular area of interest, the node is further configured to:

receive one or more confidences in the other node from one or more other nodes; and

determine confidence in the other node as a provider of codats in the particular area of interest from the one or more confidences in the other node received from the one or more other nodes.

7. The system as recited in claim 1, wherein, to determine trust in the other node as a provider of codats, the node is further configured to:

determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

determine risk associated with the other node from one or more of integrity of codats provided by the other node, accessibility of the other node, and performance of the other node; and

determine the trust in the other node from the determined codat confidence in the one or more codats and the determined risk associated with the other node.

8. The system as recited in claim 1, wherein the node is configured to store a confidence in the other node as a provider of codats in the particular area of interest, and wherein, to determine trust in the other node as a provider of codats, the node is further configured to:

determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

modify the stored confidence in the other node in accordance with the determined codat confidence in the one or more codats; and

determine the trust in the other node from the modified confidence in the other node.

9. The system as recited in claim 1, wherein the nodes are peer nodes configured to participate in a peer-to-peer environment on the network.

10. The system as recited in claim 1, wherein the plurality of nodes is configured to implement a peer-to-peer environment on the network according to a peer-to-peer platform comprising one or more peer-to-peer platform protocols for enabling the plurality of nodes to discover each other, communicate with each other, and share the codat in the peer-to-peer environment.

11. A node comprising:

a processor;

a memory comprising program instructions, wherein the program instructions are executable by the processor to;

participate on a network with other nodes in an area of interest and to exchange codats relevant to the areas of interest with the other nodes, wherein a codat is computer-representable content or data;

receive one or more codats relevant to the area of interest from one of the other nodes; and

determine trust in the other node as a provider of codats relevant to the particular area of interest from the one or more codats received from the other node and relevant to the particular area of interest.

12. The node as recited in claim 11, wherein, to determine trust in the other node as a provider of codats, the node is further configured to:

determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node; and

determine the trust in the other node from the determined codat confidence in the one or more codats.

13. The node as recited in claim 12, wherein, to determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the node is further configured to determine the codat confidence of each of the codats from the relevance of each of the codats to the particular area of interest.

14. The node as recited in claim 12, wherein, to determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the node is further configured to:

determine popularity of each of the codats among the other nodes;

determine relevance of each of the codats to the particular area of interest; and

determine the codat confidence of each of the codats from the popularity of the particular codat and the relevance of the particular codat.

15. The node as recited in claim 12, wherein, to determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the node is further configured to:

determine confidence in the other node as a provider of codats in the particular area of interest; and

determine the codat confidence in the one or more codats from the determined confidence in the other node.

16. The node as recited in claim 15, wherein, to determine confidence in the other node as a provider of codats in the particular area of interest, the node is further configured to:

receive one or more confidences in the other node from one or more other nodes; and

determine confidence in the other node as a provider of codats in the particular area of interest from the one or more confidences in the other node received from the one or more other nodes.

17. The node as recited in claim 11, wherein, to determine trust in the other node as a provider of codats, the node is further configured to:

determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

determine risk associated with the other node from one or more of integrity of codats provided by the other node, accessibility of the other node, and performance of the other node; and

determine the trust in the other node from the determined codat confidence in the one or more codats and the determined risk associated with the other node.

18. The node as recited in claim 11, wherein the node is configured to store a confidence in the other node as a provider of codats in the particular area of interest, and wherein, to determine trust in the other node as a provider of codats, the node is further configured to:

determine codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

modify the stored confidence in the other node in accordance with the determined codat confidence in the one or more codats; and

determine the trust in the other node from the modified confidence in the other node.

19. The node as recited in claim 11, wherein the node is further configured to participate with the other nodes as peer nodes in a peer-to-peer environment on the network.

20. The node as recited in claim 11, wherein the program instructions are further executable within the node to participate with the other nodes as peer nodes in a peer-to-peer environment on the network according to a peer-to-peer platform comprising one or more peer-to-peer platform protocols for enabling peer nodes to discover each other, to communicate with each other, and to find and exchange the codats in the peer-to-peer environment.

21. A method comprising:

a node participating on a network with other nodes in an area of interest and to exchange codats relevant to the areas of interest with the other nodes, wherein a codat is computer-representable content or data;

the node receiving one or more codats relevant to the area of interest from one of the other nodes; and

the node determining trust in the other node as a provider of codats relevant to the particular area of interest from the one or more codats received from the other node and relevant to the particular area of interest.

22. The method as recited in claim 21, wherein, in said determining trust in the other node as a provider of codats, the method further comprises:

determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node; and

determining the trust in the other node from the determined codat confidence in the one or more codats.

23. The method as recited in claim 22, wherein, in said determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the method further comprises determining the codat confidence of each of the codats from the relevance of each of the codats to the particular area of interest.

24. The method as recited in claim 22, wherein, in said determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the method further comprises:

determining popularity of each of the codats among the other nodes;

determining relevance of each of the codats to the particular area of interest; and

determining the codat confidence of each of the codats from the popularity of the particular codat and the relevance of the particular codat.

25. The method as recited in claim 22, wherein, in said determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the method further comprises:

determining confidence in the other node as a provider of codats in the particular area of interest; and

determining the codat confidence in the one or more codats from the determined confidence in the other node.

26. The method as recited in claim 25, wherein, in said determining confidence in the other node as a provider of codats in the particular area of interest, the method further comprises:

receiving one or more confidences in the other node from one or more other nodes; and

determining confidence in the other node as a provider of codats in the particular area of interest from the one or more confidences in the other node received from the one or more other nodes.

27. The method as recited in claim 21, wherein, in said determining trust in the other node as a provider of codats, the method further comprises:

determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

determining risk associated with the other node from one or more of integrity of codats provided by the other node, accessibility of the other node, and performance of the other node; and

determining the trust in the other node from the determined codat confidence in the one or more codats and the determined risk associated with the other node.

28. The method as recited in claim 21, wherein the node is configured to store a confidence in the other node as a provider of codats in the particular area of interest, and wherein, in said determining trust in the other node as a provider of codats, the method further comprises:

determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

modifying the stored confidence in the other node in accordance with the determined codat confidence in the one or more codats; and

determining the trust in the other node from the modified confidence in the other node.

29. The method as recited in claim 21, further comprising the node participating with the other nodes as peer nodes in a peer-to-peer environment on the network.

30. The method as recited in claim 21, wherein the nodes are configured to implement a peer-to-peer environment on the network according to a peer-to-peer platform comprising one or more peer-to-peer platform protocols for enabling the nodes to discover each other, communicate with each other, and to find and exchange the codats in the peer-to-peer environment.

31. An article of manufacture comprising software instructions executable to implement:

a node participating on a network with other nodes in an area of interest and to exchange codats relevant to the areas of interest with the other nodes, wherein a codat is computer-representable content or data;

the node receiving one or more codats relevant to the area of interest from one of the other nodes; and

the node determining trust in the other node as a provider of codats relevant to the particular area of interest from the one or more codats received from the other node and relevant to the particular area of interest.

32. The article of manufacture as recited in claim 31, wherein, in said determining trust in the other node as a provider of codats, the software instructions are further executable to implement:

determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node; and

determining the trust in the other node from the determined codat confidence in the one or more codats.

33. The article of manufacture as recited in claim 32, wherein, in said determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the software instructions are further executable to implement determining the codat confidence of each of the codats from the relevance of each of the codats to the particular area of interest.

34. The article of manufacture as recited in claim 32, wherein, in said determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the software instructions are further executable to implement:

determining popularity of each of the codats among the other nodes;

determining relevance of each of the codats to the particular area of interest; and

determining the codat confidence of each of the codats from the popularity of the particular codat and the relevance of the particular codat.

35. The article of manufacture as recited in claim 32, wherein, in said determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node, the software instructions are further executable to implement:

determining confidence in the other node as a provider of codats in the particular area of interest; and

determining the codat confidence in the one or more codats from the determined confidence in the other node.

36. The article of manufacture as recited in claim 35, wherein, in said determining confidence in the other node as a provider of codats in the particular area of interest, the software instructions are further executable to implement:

receiving one or more confidences in the other node from one or more other nodes; and

determining confidence in the other node as a provider of codats in the particular area of interest from the one or more confidences in the other node received from the one or more other nodes.

37. The article of manufacture as recited in claim 31, wherein, in said determining trust in the other node as a provider of codats, the software instructions are further executable to implement:

determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

determining risk associated with the other node from one or more of integrity of codats provided by the other node, accessibility of the other node, and performance of the other node; and

determining the trust in the other node from the determined codat confidence in the one or more codats and the determined risk associated with the other node.

38. The article of manufacture as recited in claim 31, wherein the node is configured to store a confidence in the other node as a provider of codats in the particular area of interest, and wherein, in said determining trust in the other node as a provider of codats, the software instructions are further executable to implement:

determining codat confidence in the one or more codats relevant to the particular area of interest received from the other node;

modifying the stored confidence in the other node in accordance with the determined codat confidence in the one or more codats; and

determining the trust in the other node from the modified confidence in the other node.

39. The article of manufacture as recited in claim 31, wherein the node is configured to participate with the other nodes as peer nodes in a peer-to-peer environment on the network.

40. The article of manufacture as recited in claim 31, wherein the nodes are configured to implement a peer-to-peer environment on the network according to a peer-to-peer platform comprising one or more peer-to-peer platform protocols for enabling the nodes to discover each other, communicate with each other, and to find and exchange the codats in the peer-to-peer environment.