Application implements substitution cipher technology to encode and decode plain text. To use the application, you can create a unique key and share it with others. This key can be used to encode and decode plain text multiple times. With a standard 40MB key, you can encode up to 4x10^12 characters without significant repetition, as long as a single plain text input does not exceed 2 million characters. When creating a key, each character is associated with approximately 1.5x10^10 randomly generated tokens (40MB key). The key can be of any length between 10MB and 100MB. New random tokens are generated each time a new key is created. Internally, there are two layers of tokens within each key. The outer layer represents the tokens used in the encoded text. These tokens remain consistent across different encoding sessions, but they represent different characters each time the text is encoded with the same key. This ensures that no discernible patterns appear in the encoded text. Supported languages and character sets are as follows. Windows-1250: Czech, Polish, Slovak, Hungarian, Slovene, Serbo-Croatian (Latin script), Montenegrin, Romanian, Turkmen, Albanian, Dutch, German, Irish, Luxembourgish, and English. Windows-1251: Bulgarian, Ukrainian, Belarusian, Macedonian (Cyrillic script), Russian, Serbian (Cyrillic script), and English. Windows-1252: Finnish, French, German, Spanish, Italian, Portuguese, Dutch, Danish, Swedish, Norwegian, and English. Windows-1253: Greek and English. Windows-1254: Turkish and English. Windows-1255: Hebrew and English. Windows-1256: Arabic (including Farsi and Urdu) and English. Windows-1257: Baltic languages (Latvian, Lithuanian, Estonian), Polish, Slovene, and English.