Contents

1 Evolution of Future Networks and Emerging Trust Requirements 1

1.1 From Connecting People and Things to Connecting Intelligence 1

1.2 Technology Drivers: New Architectures Create New Trust Demands 2

1.3 Business Drivers: Emerging Services Create New Trust Requirements 2

1.4 Trust Considerations for the Evolution towards Agentic Networks 3

2 Review and Limitations of Zero Trust Architecture 5

2.1 Core Principles of Zero Trust Architecture 5

2.2 Applicability and Limitations of Zero Trust Architecture 6

3 Core Concepts 8

3.1 Multi-party trust: Multi-Party Participation and Context-Aware Trust Establishment 9

3.2 Agentic Intent-aware trust: Intent-aware Authorisation and Adaptive Policy Management 10

3.3 Cross-domain trust: Cross-Domain Trust and Heterogeneous Trust Roots 12

3.4 Relationships with Zero-Trust 14

4 High-Level Architecture 15

4.1 Security and Resilience of the M-Trust Framework 15

4.2 Overview of the Architecture 15

4.3 Trust Collection and Evaluation Layer: Data Foundation and Trust Perception 16

4.4 Policy Decision Layer: Policy Evaluation and Adaptation 18

4.5 Policy Enforcement Layer: Policy Enforcement and Response 19

4.6 Cross-Layer Collaboration and Trust Closed Loop 20

5 Technology Considerations for M-Trust 22

5.1 Relationship with Existing MNO Security Mechanisms 22

5.2 Protection and Assurance of Trust Evidence 23

5.3 Trust Evaluation and Policy Decision Techniques 23

5.4 Agent Identity, Delegation, and Secure Invocation 24

5.5 Cross-Domain Trust Evidence Exchange 25

5.6 Emerging and Use-Case-Specific Technologies 26

6 Conclusion and Future Outlook 27

6.1 Conclusion 27

6.2 Future Outlook 27

7 Abbreviations 29

8 Terms and Definitions 30

9 References 32