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arXiv · 2504.14016

Post Quantum Cryptography (PQC) Signatures Without Trapdoors

William J Buchanan
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Abstract

Some of our current public key methods use a trap door to implement digital signature methods. This includes the RSA method, which uses Fermat's little theorem to support the creation and verification of a digital signature. The problem with a back-door is that the actual trap-door method could, in the end, be discovered. With the rise of PQC (Post Quantum Cryptography), we will see a range of methods that will not use trap doors and provide stronger proof of security. In this case, we use hash-based signatures (as used with SPHINCS+) and Fiat Shamir signatures using Zero Knowledge Proofs (as used with Dilithium).

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William J Buchanan. 2025-04-18. Post Quantum Cryptography (PQC) Signatures Without Trapdoors. https://arxiv.org/abs/2504.14016

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