Ueno Bank Brings Its 2.2M Customers Quantum-Resistant Banking with SignQuantum and QANplatform

Thu, Sep 11, 2025, 1:00 PM 4 min read

Asunción, Paraguay, September 11th, 2025, Chainwire

Ueno Bank, Paraguay’s largest bank with over 2.2 million customers, announced its transition to quantum-resistant cybersecurity to safeguard digital operations and digitally signed documents. Utilizing quantum-resistant digital signatures and quantum-resistant blockchain technology from SignQuantum and QANplatform, the implementation is being supported by ITTI, Paraguay’s leading technology company.

As quantum computing advances threaten traditional cryptographic systems, Ueno Bank is taking proactive measures to future-proof its operations. Ueno Bank has implemented its first quantum-resistant solution, SignQuantum, a quantum-resistant software add-on for digitally signed documents. It ensures the integrity and authenticity of e-signed documents of the company and their 2.2 million users. Using QANplatform’s quantum-resistant blockchain, document hashes will be securely uploaded with post-quantum signatures, protecting sensitive data from potential falsification.

“Ueno Bank is a technology-driven financial innovator, committed to leading the way in innovation and security,” said Juan Manuel Gustale, President at Ueno Bank. “Adopting SignQuantum and QANplatform’s technology both mitigates future risks and builds confidence with our customers and partners to bring a new standard of cybersecurity in the financial sector.”

Cybersecurity risks posed by quantum computers exist regardless of the adoption or performance levels of quantum computing. Malicious actors will be able to backdate and modify the content and signature of digitally signed documents using quantum computers, enabling a time travel attack. The current initiative by Ueno Bank pioneers the finance sector’s adoption of quantum-resistant technologies to protect internal operations and customer data against emerging cybersecurity threats.

“We are bringing together numerous stakeholders, ITTI, QANplatform, and Ueno Bank, to pioneer quantum-resistant cybersecurity in the financial sector,” stated Nazmath Nazeer, CEO of SignQuantum. “As the first bank worldwide to implement this technology, Ueno Bank is demonstrating exceptional foresight and leadership to better protect its operation and serve its customers.”

“Ueno Bank’s move towards quantum-resistant security sends a strong signal to the financial and technology sectors in Latin America,” said Luis Angulo, Vice President of ITTI. “As the exclusive distributor of SignQuantum in the region, we are expanding access to this critical technology, starting with our successful implementation with Ueno Bank.”.