From 37d9cff4c3a6257f561285de052592b7fd8754da Mon Sep 17 00:00:00 2001 From: jeff nasseri Date: Thu, 3 Apr 2025 22:58:46 +0200 Subject: [PATCH 1/2] Introduce secure A2A Communication Protocol RFC Proposes a specialized protocol for Agent-to-Agent communication with secure handshake mechanism for establishing encrypted channels Dedicated certificate/key exchange API Custom message format optimized for agent interactions. This RFC addresses limitations in traditional web protocols for agent-specific secure communication needs. --- ...04-03-secure-a2a-communication-protocol.md | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 rfcs/2025-04-03-secure-a2a-communication-protocol.md diff --git a/rfcs/2025-04-03-secure-a2a-communication-protocol.md b/rfcs/2025-04-03-secure-a2a-communication-protocol.md new file mode 100644 index 00000000..ff9e5723 --- /dev/null +++ b/rfcs/2025-04-03-secure-a2a-communication-protocol.md @@ -0,0 +1,56 @@ +# Secure Agent-to-Agent (A2A) Communication Protocol + +| Feature name | Secure Agent-to-Agent (A2A) Communication Protocol | +| :------------ | :------------------------------------------------------------------- | +| **Author(s)** | Jeff Nasseri | +| **RFC PR:** | | +| **Updated** | 2025-04-03 | +| **Obsoletes** | | + +## Summary + +This RFC proposes a dedicated secure communication protocol for Agent-to-Agent (A2A) interactions. The protocol enables secure communication between specialized autonomous agents (such as those handling accounting and payment processing) through a dedicated handshake mechanism and encryption framework. This proposal aims to establish a higher-level communication standard beyond traditional HTTP for secure, efficient agent interactions across networks. + +## Motivation + +As AI agents become more specialized and autonomous, there's an increasing need for secure, direct communication between them. Current web protocols like HTTP were not designed specifically for A2A communication, where specialized agents need to exchange sensitive information (like financial data between accounting and payment systems) with strong security guarantees. + +**Problems with existing approaches:** + +1. Traditional web protocols lack specialized security measures for agent-specific communications +2. Current solutions often rely on general-purpose encryption not optimized for agent-based workflows +3. There's no standardized handshake procedure for establishing secure A2A channels +4. Overhead from generic protocols reduces efficiency in agent-specific contexts + +## Design Proposal + +### Core Protocol Structure + +The A2A secure communication protocol consists of three main components: + +1. **Dedicated A2A Certificate Exchange API**: Separate from main agent functionality, this API handles security credentials +2. **A2A Handshake Protocol**: Initial negotiation to establish encryption parameters and verify agent identities +3. **Secure Communication Channel**: Encrypted data exchange pathway for ongoing communication + +### Handshake Protocol + +The A2A handshake initiates secure communication through these steps: + +1. **Initiation**: Requesting agent sends initial handshake with supported encryption algorithms +2. **Certificate Exchange**: Agents exchange certificates through dedicated security API +3. **Encryption Negotiation**: Agents agree on encryption method, key length, and parameters +4. **Challenge-Response Verification**: Mutual authentication through challenge-response mechanism +5. **Session Establishment**: Creation of session keys for ongoing encrypted communication + +### Compatibility + +The proposed protocol is designed with compatibility in mind: + +- **Backward Compatibility**: Agents can maintain legacy protocol support while adopting A2A security +- **Progressive Implementation**: Can be deployed alongside existing systems and gradually adopted +- **SDK Integration**: Protocol can be implemented in agent SDKs for simplified adoption +- **Bridge Components**: Adapters can be developed for agents that cannot directly implement the protocol + +## Questions and Discussion Topics + +1. New eadge of AGIs need new version of prtocols, what do you think about it? From 866505e6f4ff6795c60ca11fefdd0aca2cdebf54 Mon Sep 17 00:00:00 2001 From: jeff nasseri Date: Sun, 27 Apr 2025 17:29:25 +0200 Subject: [PATCH 2/2] fix: enhance summary for A2A communication protocol RFC to clarify bidirectional model Talking more about P2P inspiration and how can be possible to observe each node(Agent) acting as a client and server across the network. --- rfcs/2025-04-03-secure-a2a-communication-protocol.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/rfcs/2025-04-03-secure-a2a-communication-protocol.md b/rfcs/2025-04-03-secure-a2a-communication-protocol.md index ff9e5723..d858eb00 100644 --- a/rfcs/2025-04-03-secure-a2a-communication-protocol.md +++ b/rfcs/2025-04-03-secure-a2a-communication-protocol.md @@ -9,7 +9,7 @@ ## Summary -This RFC proposes a dedicated secure communication protocol for Agent-to-Agent (A2A) interactions. The protocol enables secure communication between specialized autonomous agents (such as those handling accounting and payment processing) through a dedicated handshake mechanism and encryption framework. This proposal aims to establish a higher-level communication standard beyond traditional HTTP for secure, efficient agent interactions across networks. +This RFC proposes a dedicated secure communication protocol for Agent-to-Agent (A2A) interactions. The protocol enables secure communication between specialized autonomous agents (such as those handling accounting and payment processing) through a dedicated handshake mechanism and encryption framework. Unlike HTTP which is designed for one-way Client-Server communication, this protocol adopts a bidirectional communication model inspired by P2P networks like Bitcoin and Ethereum, where each agent node acts as both client and server simultaneously. This approach provides more freedom than protocols built on HTTP/WebSocket and is better suited for a network of interconnected autonomous agents. This proposal aims to establish a higher-level communication standard beyond traditional HTTP for secure, efficient agent interactions across networks. ## Motivation