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Author

M. Ramzan

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Open access Oct 2026

Ramanujan expander networks for authenticated grayscale image encryption

Image ciphers are usually proposed with a fixed battery of statistical indicators, and the numbers reported for competing designs are almost never produced under the same conditions, on the same pictures, with the same code. We address that gap for one family of designs and propose a cipher whose components come from p...

A. Razzaque, A. Razaq, Dilshad Alghazzawi et al. · 0 citations
Conference Jul 2026

Post-Quantum Signature Migration for Ethereum Blockchain: A Verification Metrics Study

This paper reports a five-scenarios migration study from classical ECDSA to post-quantum cryptography (PQC) and hybrid signature settings for Ethereum-like blockchains. Using reproducible pipeline outputs from a multi-repository toolchain, we compare baseline ECDSA, hybrid ECDSA+ML-DSA, ML-DSA throughput collapse, ML-D...

M. Ramzan, S. Cimato · 0 citations

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