Here is an article from Maxim on modular exponentiation, modular arithmetic accelerator (MAA) and lists typical times to execute various sized exponentiations: The MAXQ1050, MAXQ1850, and MAXQ1103 are secure 32-bit microcontrollers that provide hardware support for performing modular arithmetic. This is done using an engine called the modular arithmetic accelerator (MAA). This application note gives typical […]