A new algorithm for text encryption, resistant to letter frequency attacks

Today, the security of information in communication channels is of great importance, and the higher the classification of information, the higher the importance of security. From a long time ago, various encryption algorithms were proposed to ensure communication security, and different organizations use different encryption algorithms based on the sensitivity of the information. Information can be classified into different types, textual information is one of the most diverse types of information, which becomes more important if there is a classification. In this article, based on the 28-character alphabet, a new encryption method is presented, which has high security and speed, and is resistant to attacks based on the frequency of letters. Laboratory results show a very high resistance of this method against a comprehensive attack. The attacker's need for a lot of memory, which is practically inaccessible, that is another reason for the robustness of this algorithm. Given the key generation algorithm in this method, it can be ensured that this algorithm is also very resistant to attack in the middle.