trap door

n.

地板或屋顶上的活门；

Trap door
Trap-door
Trap-door
Hiding information and signatures in trapdoor knapsacks
Hiding information and signatures in trapdoor knapsacks
Many-to-One Trapdoor Functions and Their Ralation to Public-Key Cryptosystems.
Many-to-one trapdoor functions and their relation to public-key cryptosystems
Sequential Aggregate Signatures from Trapdoor Permutations.
Sequential Aggregate Signatures from Trapdoor Permutations
The trapdoor procedure using autogenous cortical and cancellous bone grafts for osteonecrosis of the femoral head
Widespread uplift and 'trapdoor' faulting on Galapagos volcanoes observed with radar interferometry.
Hiding Information and Receipts in Trapdoor Knapsacks
Widespread Uplift and Trap-door Faulting of Galapagos Volcanoes Observed with Satellite Radar Interferometry