METHOD AND APPARATUS FOR ENCODING AND DECODING OF KOREAN LANGUAGE IN FORMAT-PRESERVING ENCRYPTION

摘要

The present invention relates to a method and an apparatus for encoding and decoding Korean text in format-preserving encryption which maintain a property of format-preserving encryption, encode an input character string including Korean text into a digit string, and decode a digit string into a character string including Korean text. According to the present invention, the method for encoding and decoding Korean text in format-preserving encryption comprises: a step of receiving an input character string; a step of encoding at least one two-byte or three-byte Korean character composing the input character string into two or three digits; and a step of encrypting an encoded result to output ciphertext.