The rapid development of quantum computing technology presents a substantial challenge to existing cryptographic systems. For instance, widely used algorithms such as RSA (Rivest-Shamir-Adleman) and ECC (Elliptic Curve Cryptography) are particularly vulnerable because quantum computers, leveraging Shor’s algorithm, can efficiently solve the mathematical problems—like factoring large integers or computing discrete logarithms—that underpin their security. As a result, these cryptographic standards, which have long been relied upon to secure sensitive data, are now at risk of being compromised.
To address these emerging risks, the National Cyber Security Agency (NACSA) has taken decisive action. Through the issuance of Chief Executive Directive No. 9, NACSA mandates that all relevant entities begin preparing their data and information systems for migration to Post-Quantum Cryptography (PQC).
