Olympic Privacy-Preserving Blueprints: Faster Communication, Highly Functional, Stronger Security

ePrint Report: Olympic Privacy-Preserving Blueprints: Faster Communication, Highly Functional, Stronger Security

Scott Griffy, Markulf Kohlweiss, Anna Lysyanskaya, Meghna Sengupta

Introduced by Kohlweiss, Lysyanskaya, and Nguyen (Eurocrypt'23), an $f$-privacy-preserving blueprint (PPB) system allows an auditor with secret input $x$ to create a public encoding of the function $f(x,\cdot)$ that verifiably corresponds to a commitment $C_x$ to $x$. The auditor will then be able to derive $f(x,y)$ from an escrow $Z$ computed by a user on input the user's private data $y$ …

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