Security Protection on Trust Delegated Medical Data in Public Mobile Networks Dasun Weerasinghe, Muttukrishnan Rajarajan and Veselin Rakocevic Mobile Networks.

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Security Protection on Trust Delegated Medical Data in Public Mobile Networks Dasun Weerasinghe, Muttukrishnan Rajarajan and Veselin Rakocevic Mobile Networks Research Group School of Engineering and Mathematical Sciences City University London.

Outline of the Presentation Motivation Proposed solution Trust Negotiation Protocol Security tokens Security Capsule Implementation

Motivation Private Medical Center A & E Relying Service Provider Medical Healthcare Personal Requesting Service Provider

Problem statement Medical Healthcare Personal authenticates to the Dynamic Trust Negotiation network Trust negotiation between the Relying service provider and the Requesting service provider Securely transmit sensitive data from the relying service provider to the Medical Healthcare Personal mobile device Data security at the mobile device

Proposed Architecture

Proposed protocol phases Medical Healthcare Personal registers and authenticates in the Dynamic Trust Negotiation Network Trust Negotiation between Relying Service Provider and Requesting Service Provider Sensitive attributes are shared to Medical Healthcare Personal in a secure channel.

Proposed protocol phases (Contd.) Medical Healthcare Personal– MHP Requesting Service Provider– RequestingSP Relying Service Provider– RelyingSP Authentication and Trust Negotiation Server- ATNS

MHP registers and authenticates with ATNS ATNS Engine MHP 1. Login Token2. Login Token 3. Check Past records 4. Evaluate the Trust Trust Evaluation Engine Trust Mapping Database RequestingSP 5. Authentication Token

Trust Negotiation between MHP and RelyingSP ATNS Engine MHP 1. RecordAccess (PatientID, Authentication Token) 4. TrustChallenge Token 2. Check Past records 2. Evaluate the Trust Trust Evaluation Engine Trust Mapping Database RelyingSP 3. Trust Recommended Token 6. TrustChallenge Response 5. TrustChallenge Token 7. Trust Token

Sensitive attributes are shared to MHP MHP Relying SP Encrypted Data Trust Token is stored inside the MHP’s mobile device

Data protection at the mobile device Data transmission in Encrypted format The decryption key for the data decryption will be generated in the mobile device Decryption key generation using the identity and key parameters in the mobile device Real-time authorization for the data access Permanent data deletion after the data utilization

Security Capsule Architecture

Conclusion Negotiate trust between different entities in a healthcare domain Trust negotiation architecture Trust negotiation protocol for message communication Data protection in the mobile device Security capsule architecture

Q & A