Benchmarking the quantum cryptanalysis of symmetric, public-key and hash-based cryptographic schemes

Understand

Quantum algorithms can break factoring and discrete logarithm based cryptography and weaken symmetric cryptography and hash functions.

• In order to estimate the real-world impact of these attacks, apart from tracking the development of fault-tolerant quantum computers it is important to have an estimate of the resources needed to implement these quantum attacks.
• For attacking symmetric cryptography and hash functions, generic quantum attacks are substantially less powerful than they are for today's public-key cryptography.
• So security will degrade gradually as quantum computing resources increase.