Elgamal cryptoalgorithm on the basis of the vector-module method of modular exponentiation and multiplication

This paper presents the implementation of the ELGamal cryptoalgorithm for information flows encryption / decryption, which is based on the application of the vector-modular method of modular exponentiation and multiplication. This allows us to replace the complex operation of the modular exponentiation with multiplication and the last one with addition that increases the speed of the cryptosystem. In accordance with this, the application of the vector-modular method allows us to reduce the modular exponentiation and multiplication temporal complexity in comparison with the classical one.