Currently, the study of microcontrollers and microcircuits by students is becoming very important and in demand in the educational program "computer engineering". This knowledge and skills will be necessary for the employment of graduates in industry, science and education. Large technical systems are emerging that require an understanding of the architecture of these systems and the skills to use these systems safely and reliably. This article discusses the technologies of complete homomorphic encryption, which allow calculations to be performed on encrypted data without prior decryption. Increased interest in such technologies has led to the emergence of software tools and libraries that support full homomorphic encryption. However, being relatively young in this field of cryptography, standards and guidelines for the use of fully homomorphic encryption schemes are still evolving. The article lists the main areas of application of homomorphic encryption. The analysis of existing libraries in the field of homomorphic encryption is carried out. As a result of the analysis, the necessity of carrying out the operation of homomorphic encryption and subtraction, as well as the relevance of developing the implementation of the library of homomorphic encryption of integers, is revealed. A method of homomorphic separation is proposed, which allows performing the operation of separating homomorphic encrypted data.