PIX participants must meet a series of technical requirements to ensure security, availability, and regulatory compliance.
In addition to integrating with the SPI (Instant Payment System), which handles the settlement of transactions in real time, financial institutions must also connect to the DICT (Directory of Transaction Account Identifiers), a database that stores and manages Pix keys, enabling them to securely locate the destination account for each payment.
Pix has transformed the way people and businesses make payments in Brazil.
Since its launch, the system has become one of the country's primary means of financial transfer, requiring participating institutions to have a robust, secure technological infrastructure capable of operating continuously.
However, integrating into the Pix ecosystem requires meeting strict technical requirements, obtaining certifications, implementing advanced security mechanisms, managing crypto assets, and complying with current regulatory standards.
In this article, you'll learn about the key technical requirements for Pix participants, the challenges involved in integration, and how specialized solutions can accelerate this process more securely and reliably.
Who can participate in PIX?
The Central Bank establishes specific criteria for institutions that wish to participate in the Pix ecosystem.
Among the main participants are:
- Banks;
- Credit unions;
- Payment institutions;
- Fintechs;
- Acquirers and sub-acquirers;
- Other institutions authorized by the Central Bank.
Depending on the business model, participation may be direct or indirect.
Direct participants integrate with the Instant Payment System (SPI) infrastructure, while indirect participants use the technological infrastructure of a clearinghouse.
Regardless of the model adopted, all must meet technical and operational requirements related to the security, availability, and integrity of transactions.
What are the main technical requirements for PIX participants?
Integration with Pix requires an architecture designed to operate in a highly critical environment, where millions of transactions are processed daily.
The main requirements include the following.
Secure communication with the Central Bank's systems
All communication between the participating institution and the Central Bank's systems must take place through secure channels, using cryptographic protocols and authentication mechanisms that ensure the confidentiality, integrity, and authenticity of the information.
In addition, messages must comply with the technical standards established by the Central Bank for the SPI, the DICT, and the other components of the Pix ecosystem.
Encryption and Digital Signatures
All critical messages must be protected by encryption and digital signature mechanisms.
These features ensure that:
- Only authorized recipients should be able to access the information;
- The data must not be altered during transmission;
- It should be possible to verify the identity of the institution responsible for the message.
Digital signatures are also essential for ensuring the non-repudiation of transactions.
Cryptographic Key Management
The security of Pix depends directly on the protection of the cryptographic keys used to sign and encrypt messages.
Therefore, it is essential to implement a key management strategy that includes:
- Safe generation;
- Secure storage;
- Periodic rotation;
- Access control;
- Audit;
- Repeal when necessary.
This process significantly reduces the risks associated with compromised credentials.
High availability
Pix transactions are processed continuously, 24 hours a day, seven days a week.
This requires that the technological infrastructure provide:
- Redundancy;
- Load balancing;
- Disaster recovery;
- Continuous monitoring;
- Low latency.
The unavailability of a system can compromise the institution’s operations and directly impact its customers.
Access Control and Authentication
Environments that support Pix transactions must use robust authentication and authorization mechanisms.
Among the key practices are:
- Certificate-based authentication (mTLS);
- Role-Based Access Control (RBAC);
- Segregation of duties;
- Logging and auditing of operations.
These controls enhance operational security and reduce internal risks.
Regulatory compliance is also part of the technical requirements
Integration with Pix requires a technological implementation designed to meet the regulatory requirements established by the Central Bank, which cover security, communication, availability, and operational management.
Participating institutions must comply with a broad set of technical standards related to cybersecurity, the protection of cryptographic assets, authentication, business continuity, risk management, secure communication, and the operation of the Pix ecosystem's systems.
These requirements are continuously updated to keep pace with the evolution of cyber threats and system capabilities.
The Central Bank makes available on its official website all regulatory and technical documentation applicable to Pix participants, including manuals, resolutions, instructions, and technical specifications that guide the integration process.
Given this situation, many institutions choose to use specialized solutions that already incorporate these technical and regulatory requirements, reducing development effort, accelerating approval, and facilitating adaptation to future updates from the Central Bank.
Key Challenges During Integration with PIX
Although the technical documentation is available, practical implementation often involves significant challenges.
Among the main ones are:
- Correctly interpret the Central Bank's technical manuals;
- Implement encryption and digital signatures in accordance with the required standards;
- Protect certificates and cryptographic keys;
- Integrate legacy applications with the new services;
- Ensure performance in high-volume operations;
- Complete approvals without compromising the project schedule;
- Keep the solution up to date in light of regulatory changes.
Without an appropriate architecture, these factors can increase costs, delay projects, and heighten operational risks.
How PRODIST Simplifies Integration with PIX
Designed for financial institutions, fintech companies, and payment service providers, PRODIST STS significantly reduces the complexity of integrating with the Pix ecosystem.
The solution automates the security processes required by the Central Bank, allowing teams to focus their efforts on the application’s business rules without having to develop the entire cryptographic layer.
Resources for Secure Integration
PRODIST STS offers features such as:
- XML signature for SPI operations and DICT queries;
- JWS Signature for Dynamic QR Codes;
- HTTP message streaming;
- Generation and formatting of public keys using the JWKS standard;
- Microservices protected by OAuth2;
- On-premises, hybrid, or cloud deployment;
- Proprietary software, licensed and continuously maintained;
- A proven solution that has been used for more than two decades in mission-critical operations, with no end-of-life risks.
This architecture speeds up integration projects, reduces the need for in-house development, and increases operational reliability.
Advanced protection for cryptographic keys
The security of the private keys used in Pix transactions is one of the cornerstones of the solution.
PRODIST STS allows you to:
- Centralized key lifecycle management;
- Hosting on PRODIST's own KMS;
- Integration with certified HSMs;
- Compatibility with enterprise vaults and cloud-based KMS services;
- Certificate-based authentication (mTLS);
- Role-Based Access Control (RBAC);
- Remote management of crypto assets.
As a result, institutions can strengthen the protection of their crypto assets without significantly altering their existing architecture.
Why choose PRODIST for PIX integration?
Founded in 1987, PRODIST Technologies develops solutions focused on the security of financial transactions and serves institutions that operate in highly critical environments.
Its technology has been integral to key operations of the National Financial System since the implementation of the SPB in 2002, providing stability, performance, and regulatory compliance.
Among its key differentiators are:
- Nearly 40 years of experience in the financial market;
- More than 40 financial institutions served;
- Solutions that have been in production for more than two decades;
- SLA of up to 99.96%;
- Specialization in cryptography, digital signatures, and cryptographic asset management;
- Integration with BACEN, NÚCLEA, Pix, and SPED e-Financeira systems;
- Technical support recognized for its speed, responsiveness, and excellence.
More than just providing software, PRODIST acts as a strategic partner to institutions, supporting them from implementation through the ongoing support of their critical operations. supporting them from implementation through the ongoing support of their critical operations.
FAQ – Technical Requirements for PIX Participants
The main requirements include integration with SPI and DICT, encryption, digital signatures, cryptographic key management, strong authentication, high availability, and compliance with Central Bank regulations.
Banks, fintech companies, credit unions, payment institutions, acquirers, and other organizations authorized by the Central Bank may participate in the Pix ecosystem.
Because it protects the keys used for signing and encrypting messages, reducing the risk of fraud, data leaks, and compromised transactions.
The solution offers XML and JWS signing, integration with SPI and DICT, cryptographic key management, support for HSMs, Vaults, and KMS, mTLS and OAuth2 authentication, and on-premises or cloud deployment.
Yes. The platform was developed to integrate with different architectures using components, microservices, and other forms of integration, thereby minimizing changes to existing applications.
PRODIST provides specialized technology for encryption, digital signatures, cryptographic asset protection, and integration with the Central Bank’s systems, offering nearly 40 years of experience, proven solutions, and specialized technical support.
