A Hole in COVID Certificates Used by the Police in Hanoi (Vietnam)

The article discusses the issue of weak key cryptography and its real-world applications. The author highlights the dangers of using low-quality keys and the potential consequences that can arise from their use in practice. Special attention is given to everyday examples where poor cryptographic applications can lead to serious security breaches. The article also emphasizes the importance of education on cryptography, ensuring that those responsible for digital security are aware of the risks involved. Therefore, it is crucial for users and professionals alike to gain knowledge about cryptography and to avoid weak solutions that can be easily compromised by cybercriminals.