Encryption is one of the most critical defensive technologies in modern computing — protecting remote access, secure sessions, digital identities, key exchange, certificates, and stored sensitive data. Today’s widely deployed public-key cryptography (e.g., RSA, ECC, Diffie-Hellman) is safe only against classical computing attacks. However, quantum computing promises to break these assumptions, and world governments — including Australia — are already pushing organisations to prepare.

Refer to Australia Signals Directorate (ASD) articles – Planning for post-quantum cryptography and Stay ahead of the quantum threat with post-quantum cryptography

As SSH.com’s research shows, public key cryptosystems that underpin protocols like TLS, SSH, and IPsec are vulnerable to quantum attacks once sufficiently powerful quantum machines arrive.