A method of designing a logic circuit with data-dependent delays is performed using an electronic design automation system. The logic circuit includes logic paths from logic inputs to at least one logic output. The method includes: obtaining an initial circuit design; specifying respective delays for multiple logic paths in the initial circuit design such that at least some of the outputs switch at different times within a clock cycle for different combinations of logic input levels; and forming a second circuit design having the specified respective delays along the respective logic paths by adding delay elements to the initial circuit design based on the specified respective delays.