Verfahren zur Bearbeitung der Abstandsberechnung in einer Kryptografischen Anwendung

Details

Veröffentlichungs-Nr.

EP4712402

Anmeldetag

16. September 2024

Veröffentlichung

18. März 2026

Rechtsraum

EP

IPC

H04L9/00(VAULTREE LTD et al.)

Abstract

The present invention relates to a method for performing an equality checking of a first character and a second character in a cryptographic application wherein programmable bootstrapping is used, at least one of said first and said second character being encrypted, the method comprising:o checking the equality of the first character with the second character by determining a difference between said characters, ando using the difference as input for a lookup table operation through a programmable bootstrap operation, said lookup table yielding a first predetermined value if the difference equals zero and a second predetermined value different from the first predetermined value, so obtaining an equality result for the pair of characters formed by the first and the second character.

Anmelder

Firmen

Belfort Labs BV
Katholieke Universiteit Leuven KU Leuven Research & Development

Land

🇧🇪 Belgien