Beijing FinTech Alliance Releases Privacy Computing Interoperability Platform Technical Specification

Recently, under the guidance of the People’s Bank of China, the Beijing FinTech Industry Alliance released the "Financial Industry Privacy Computing Interconnection Platform Technical Specification". The standard is led by China UnionPay and was jointly compiled by more than 50 entities including major commercial banks, well‑known universities, technology companies, telecom operators, internet agencies, and testing institutions, with deep participation from Ant Group.

The standard’s API specifications have already been open‑sourced on Ant’s "YinYu" open‑source community.

This specification is one of the important series results of the Beijing FinTech Alliance Data Committee’s “Privacy Computing Interconnection” project group. Major commercial banks, telecom operators, and technology companies have already adapted and integrated the relevant functions and interfaces, providing support for subsequent technical verification, scenario pilots, and certification.

Privacy computing is a crucial technology for balancing data circulation and security, enabling trustworthy data flow across different platforms. Interconnection reduces deployment costs of privacy‑computing products and facilitates large‑scale application, and Ant has long been committed to research in this area.

During the standard‑setting process, Ant, together with project‑group members, led the development of two core sub‑topics: the heterogeneous platform open algorithm protocol and heterogeneous TEE interconnection. Ant also deeply participated in research on workflow scheduling and algorithm container loading, secure operator interfaces and serviceization, management‑plane element interfaces, and transport interfaces.

The heterogeneous TEE interconnection solution is based on Ant’s self‑developed “Unified Attestation” remote attestation process, helping enterprises achieve business interconnection across heterogeneous TEEs with seamless migration. Leveraging the research outcomes of the open algorithm protocol, Ant’s "YinYu" community and several banks, the three major telecom operators, and technology companies have conducted interoperability practice and verification for open algorithms such as ECDH‑PSI, SS‑LR, and Secureboost.

Based on this standard, Ant’s Moss privacy‑computing platform implements homogeneous algorithm (black‑box) interconnection across management, scheduling, algorithm container, and transport layers, enabling tasks such as privacy set intersection and modeling with other vendors that follow the same standard. Both parties can complete full‑process operations—nodes, projects, data, jobs—without deploying each other’s software, achieving efficient and trustworthy data flow. Moss has already cooperated with multiple banking customers.