METHOD AND APPARATUS FOR ENCRYPTING DATA

摘要

A method and an apparatus for encrypting data are provided to reduce errors by collecting only important bits of each data unit and encrypting the collected bits separately. A method for encrypting data includes the steps of: allocating bits included in each data unit to a plurality of data blocks based on positions of the bits in the data unit(300); encrypting the data blocks by using a predetermined encrypting method; and performing error correcting coding of the encrypted data blocks according to different coding rates(306). The second step includes the steps of: determining whether the data blocks are integral multiples of an encryption base unit(302); selectively padding the data blocks by the integral multiple of the encryption base unit based on a determining result(303); and encrypting the padded data blocks by using the predetermined encrypting method(304).