What is post-quantum cryptography?
Cryptography for the quantum era
Post-quantum cryptography (PQC) refers to algorithms that are designed to be secure against attacks quantum computer-enabled attacks. Classical algorithms like RSA and ECC will become vulnerable as soon as adversaries can exploit quantum capabilities, making the transition to PQC algorithms increasingly urgent. Although not yet capable of cracking conventional encryption, quantum computers are already threatening the long-term confidentiality and integrity of data through “harvest now, decrypt later” attacks.
Future-proof cryptography
PQC lays the foundation for secure communication in a world where quantum computers are able to compromise classical encryption.
Post-quantum cryptography will protect data from attacks that classical algorithms cannot withstand.
Transitioning to post-quantum cryptographic standards
PQC enables secure key exchange and data encryption, helping counter the threat posed by quantum-computers and supports phased integration into existing protocols such as TLS and VPNs.
How does post-quantum cryptography work?
PQC is based on mathematical problems that neither classical nor quantum computers can solve. Key approaches include lattice-based cryptography, hash-based signatures and code-based schemes. These algorithms remain compatible with current protocols and allow step-by-step migration. Standardization efforts by NIST are producing vetted, reliable schemes, such as FIPS 203 (ML-KEM), FIPS 204 (ML-DSA) and FIPS 205 (SLH-DSA). The result is crypto-agility, enabling a smooth shift from classical to post-quantum solutions.
Scalable security for the quantum era
PQC helps network operators future-proof their encryption infrastructure and meet evolving regulatory and compliance demands.
Upgrading networks with post-quantum solutions
As quantum computers become more capable, many widely used cryptosystems face obsolescence. PQC protects confidential data for the long term – whether in communication, cloud environments or critical infrastructure. Early adoption strengthens resilience against emerging attack vectors and helps build trust. For network operators, PQC is emerging as a key pillar of modern cybersecurity strategies. Adva Network Security’s ConnectGuard™️ technology already supports post-quantum algorithms, enabling operators to prepare today for a quantum-secure future.
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