# Quantum Computing for Healthcare: A Review
## 6 Security of Quantum Computing for Healthcare  
As healthcare applications are essentially life-critical, therefore, ensuring their security is fundamentally important. However, a major challenge faced by healthcare researchers is the siloed nature of healthcare systems that impedes innovation, data sharing, and systematic progress [127]. Furthermore, [PERSON], a leader in cybersecurity and the chair of the Quantum Security Alliance, suggests that effective implementation of security should allow academia, industry, researchers, and governments to collaborate effectively [128]. Security of a quantum computing system is also very important, as it can enable exponential upgradation of computing capacities, which can put at risk current cryptographic-based approaches. Whereas cryptography has been considered the theoretical basis for healthcare information security, quantum computing using cryptography exploits the combination of classical cryptography and quantum mechanics to offer unconditional security for both sides of healthcare communication among healthcare service consumers. Quantum cryptography has become the first commercially available use case of quantum computing. Quantum cryptography is based on the fundamental laws of mechanics rather than unproven complex computational assumptions. A taxonomy of key security technologies that could help healthcare information security is presented in Figure 6 and described below.  
\begin{table}
\begin{tabular}{l c c c c c} \hline \hline
**Technique** & **Healthcare** & **Security** & **Performance** & **Scalability** & **IoT** & **Key Feature** \\ \hline [PERSON] et al. [113] & ✓ & \(\times\) & ✓ & \(\times\) & \(\times\) & Logistic regression \\ \hline [PERSON] et al. [118] & ✓ & ✓ & ✓ & \(\times\) & ✓ & Blockchain \\ \hline [PERSON] et al. [119] & \(\times\) & ✓ & ✓ & ✓ & \(\times\) & Digital signature \\ \hline [PERSON] et al. [124] & ✓ & \(\times\) & \(\times\) & \(\times\) & \(\times\) & Survey \\ \hline [PERSON] et al. [120] & ✓ & ✓ & ✓ & ✓ & \(\times\) & Quantum walks \\ \hline [PERSON] et al. [121] & ✓ & ✓ & \(\times\) & ✓ & ✓ & Blockchain \\ \hline [PERSON] [114] & ✓ & \(\times\) & ✓ & \(\times\) & \(\times\) & 3D images \\ \hline [PERSON] [49] & ✓ & \(\times\) & ✓ & \(\times\) & \(\times\) & Cloud computing \\ \hline [PERSON] et al. [123] & ✓ & ✓ & \(\times\) & \(\times\) & \(\times\) & Qubits quantum \\ \hline [PERSON] et al. [122] & ✓ & ✓ & \(\times\) & \(\times\) & \(\times\) & Quantum watermarking \\ \hline [PERSON] [125] & ✓ & \(\times\) & \(\times\) & \(\times\) & \(\times\) & Literature review \\ \hline [PERSON] et al. [126] & \(\times\) & \(\times\) & \(\times\) & \(\times\) & \(\times\) & Quantum leadership \\ \hline [PERSON] et al. [115] & ✓ & \(\times\) & ✓ & \(\times\) & ✓ & Smartphone app \\ \hline [PERSON] et al. [116] & ✓ & \(\times\) & ✓ & ✓ & ✓ & High-speed wavelet \\ \hline [PERSON] et al. [117] & ✓ & \(\times\) & ✓ & ✓ & ✓ & DH extension \\ \hline \hline \end{tabular}
\end{table}
Table 4: A comparison of the existing quantum computing literature on healthcare using different performance parameters.  
Figure 6: Taxonomy of key technologies that can ensure security for healthcare information processing using quantum computing.