Peer-to-Peer Authentication Without PKI Infrastructure
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Solution Overview
Problem
Existing secure communication systems require public-key infrastructure (PKI) and third-party involvement, making them costly and inaccessible to the general public, while also lacking mechanisms for authenticating remote devices and imposing restrictions on message access.
Innovation Solution
A method for secure peer-to-peer communication that authenticates remote devices without PKI certificates, using password-protected messages with unique identifiers and randomly generated numbers to establish a mutually unique key, allowing for time, location, and device restrictions, and enabling message recall without external party involvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If public-key infrastructure (PKI) with certificate authorities is used for secure communication, then authentication and security are improved, but system complexity and cost increase significantly
Solution Approach 1:
The patent extracts and removes the third-party certificate authority from the authentication process. Instead of relying on external PKI infrastructure, the system performs authentication directly between communicating devices using cryptographic protocols that generate and verify keys locally, eliminating the need for external certification entities while maintaining security.
Solution Approach 2:
The system enables devices to authenticate themselves autonomously without external assistance. Each device generates its own cryptographic key pairs and uses them to prove identity to communication partners through cryptographic challenges and responses, making the authentication process self-contained and independent of external PKI infrastructure.
2Reliability
If public-key infrastructure (PKI) with certificate authorities is used for secure communication, then authentication and security are improved, but accessibility and cost decrease
Solution Approach 1:
By removing the requirement for PKI certificates and certificate authorities, the system eliminates the barrier to entry that made secure communication inaccessible to the general public. Users can now implement secure communication without needing corporate infrastructure or significant personal investment in PKI systems.
Solution Approach 2:
The system uses ephemeral cryptographic keys that are generated temporarily for each communication session rather than relying on long-term PKI certificates. This approach reduces the complexity and cost of implementation while maintaining security, making secure communication accessible to individual users without requiring expensive infrastructure.
3Loss of information
If traditional encryption methods are used, then message confidentiality is improved, but message integrity and authenticity verification are worsened
Solution Approach 1:
The patent combines encryption and authentication functions into a unified cryptographic protocol. The same cryptographic mechanisms used to establish confidential communication also provide authentication and integrity verification through mutual authentication handshakes and cryptographic signatures, eliminating the need for separate verification processes.
Data Source
AI summary
Systems and methods for secure peer-to-peer communication are disclosed herein. Various embodiments of the present invention advantageously enable authentication of a remote device, but without the use of a PKI certificate, and more generally, without requiring involvement from outside parties. In an exemplary embodiment, a password-protected message may be sent to a remote device, the password-protected message containing a unique identifier of a local device and a locally generated random number. Upon accessing the password-protected message, the remote device may reply to the local device including its own unique identifier and a remotely generated random number, where the reply is encrypted using the locally generated random number. An acknowledgement message may then be sent to the remote device including a mutually unique key, where the acknowledgement message is encrypted using the remotely generated random number. Subsequent communications between these devices may then be encrypted with this mutually unique key.