Security analysis is essential for the cryptographic chip design. The traditional security evaluation methods mainly include leak assessment and side channel attack (SCA), but these need to collect a large number of power traces with much time and professional acquisition equipments. A new idea based on chip simulation waveform for detecting the leakage was proposed in this paper, and a analysis software was designed. The experimental results showed that this novel method could quickly detect the information leakage in the process of encryption or decryption. Besides, there was a qualitative relationship between the number of traces required by the emulational and the actual side channel attack. Compared with the previous technology, it mainly applied to the digital front-end design stage without requirements on hardware devices and could save a lot of time and cost.