← EPO Patent Bulletin

ATTRIBUTE-BASED ENCRYPTION FOR SELECTIVE DOCUMENT CONTENT PROTECTION

Publication EP4557144A1 Kind: A1 Mar 18, 2026

Applicants

NTT DATA Services Federal Government, LLC, NTT Research, Inc., NTT Belgium NV/SA

Inventors

Bongiovanni, Nat, Goto, Takashi, Shahlavi, Farid, Weidman, Tim, Yu, Paul, Mathis, Pascal, Cabay, Jean-Philippe

IPC Classifications

G06F 21/60 20130101AFI20260129BHEP G06F 21/62 20130101ALI20260129BHEP G06N 3/045 20230101ALI20260129BHEP H04L 9/08 20060101ALI20260129BHEP H04L 9/30 20060101ALI20260129BHEP H04L 9/40 20220101ALI20260129BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR