// Research series
Signature Footprint Engineering
Key, signature and proof-size trade-offs for cryptographic systems operating across storage and constrained transports.
3-part series · Read in order
// Reading path
From first question to final consequence.
- Part 1The signature is not the key.A byte-level comparison of RSA, elliptic-curve, pairing-based and post-quantum signatures shows when recurring signature traffic overtakes key provisioning and storage.
- Part 2A selective proof is not automatically smaller.When attributes require independent signatures, BBS can replace N signatures with one multi-message signature, but its selective-disclosure proof grows with every hidden message. The useful crossover depends on what the comparison actually…
- Part 3The payload must fit the channel.A compact signed object needs one deterministic binary form and three explicit transport profiles. QR, NFC and Bluetooth LE fail in different ways when signature and key material cross their byte budgets.
A selective proof is not automatically smaller.
When attributes require independent signatures, BBS can replace N signatures with one multi-message signature, but its selective-disclosure proof grows with every hidden message. The useful crossover depends on what the comparison actually carries. A multi-message...