The article considers architecture and algorithms of vending machines. Given of criteria to choosing a microcontroller for creating vending machine. Analyzes hardware interfaces used in vending technology. Shows advantages of using of AES and CRC hardware accelerators.
Within investigation of AES-standard usage two software modules were implemented. These realizations include visualization tools, full implementation of algorithms for encryption and decryption according to AES standard, means for detailed logging of encryption changes to have possibilities see intermediate results data. Also application programming interface capabilities has been used to generate keys. The use of object-oriented programming allows understand the problem deeper as well as get the best way to solve it more clearly and therefore in more effective way.