READABLE SYMMETRIC DECRYPTION METHOD

摘要

PURPOSE: A readable symmetric decoding method is provided to generate original data of a file encoded with a one-to-one matching method secured with data security, by using an S-box table. CONSTITUTION: A decoding part fetches an S-box table made in the encoding from a server(S61). An input/output part of the decoding part fetches an encoded file(S63). A decoding module of the decoding part decodes the encoded file into original data by one-to-one matching with the S-box table(S65). The decoded data is outputted or stored in the server by using a conversion block(S67). [Reference numerals] (AA) Start; (BB) End; (S61) Composing or fetching an S-box table made in encoding; (S63) Inputting encoded data; (S65) Decoding the encoded data into original data by one-to-one matching with the S-box table; (S67) Outputting the original data