A cryptography system comprises a noising engine and a de-noising engine. The noising engine is configured to receive a key pattern, determine a final membership value based on one or more input parameters and a first knowledge base, and generate a noised key pattern based on the key pattern and the final membership value. The de-noising engine is configured to receive the noised key pattern and the final membership value, and generate a de-noised key pattern based on the noised key pattern, the final membership value, and a second knowledge base.