Аннотация
Quantum computing - is an advanced technology which has a great impact on the traditional methods of computation causing a major challenge for the cryptographic systems that form the basis of our digital security. This research thesis is on cryptographic resilience in the age of quantum when the public key algorithms such as RSA and elliptic curve cryptography get compromised with the use of Shor's algorithm, while symmetric primitives additionally lose half of their security against Grover's search. The aim of the research is to thoroughly understand the quantum threat model and through experiments, figure out what is the realistic "cost of quantum safety" for the classical and post-quantum cryptographic mechanisms. The methodology combines systematic literature review with an experiment which is carried out using a reproducible benchmarking framework that (QCCB) outputs statistical performance estimates (mean, dispersion, and confidence intervals) and machine-readable result artifacts. The experim