Posted on August 01, 2013 at 09:01Before we wade into a long discussion, this thread is over a year old. Mr Jou is ticked off because he looked under the hood and found half the engine missing. I've looked over the materials for the STM32W parts, and the library, and it would appear that in only encrypts. I can understand his frustration about his problem, and at the lack of response to his question.
The AES software libraries from ST require a lot of hoops to be jumped through, limits on exportation, etc. I find this all rather odd because I can find solutions on the internets that work quite effectively, and can be readily optimized/targeted.
The slowness being complained about is somewhat more hard to quantify, but I'll observe that software solutions are significantly slower than hardware solutions, and optimized ones take up a lot more space/resources.
May be the hardware is there but doesn't work, or is missing to address some export limitations/concerns, which I find confusing for a device that is designed, built and tested outside the USA. I recall several eBay vendors in China offering F215 and F417 based boards.
