A trap-door one-way function is easy to calculate in one direction
and infeasible to calculate in the other direction unless certain
additional information is known.

Question

Quizplus · Accepted Answer

A trap-door one-way function is designed to be easy to compute in one direction, allowing for straightforward encryption or operation, but difficult to reverse or invert without specific secret information, making decryption or reverse operation infeasible without this knowledge.

A Trap-Door One-Way Function Is Easy to Calculate in One