Observed arrival · 2026-09-23

Crypto Sizes: a post-quantum key and signature comparator

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Editorial interest 77/100 Selection signal · not a rating of the site

A reference tool compares key, ciphertext, and signature sizes for post-quantum algorithms against classical cryptography.

Landing page captured for the 2026-09-23 issue.

For: People comparing post-quantum and classical cryptography
Worth noticing: It distinguishes exact PQC sizes from classical values that can vary with encoding, and identifies Falcon figures as draft-based.

Field notes

The KEM comparison treats handshake overhead as a combined public-key-plus-ciphertext wire cost, rather than showing component sizes alone. Classical values use specified encodings, and the page cautions that RSA and ECC sizes can vary with encoding details. Its source notes distinguish finalized FIPS standards from the draft-based FN-DSA/Falcon figures.

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