| 摘要 |
A data encryption method using a public key includes encoding data into a first code using a first public key, selecting a predetermined error vector, encoding the selected error vector into a second code using a second public key, and generating a ciphertext by adding the first and second codes. A corresponding decryption method includes performing first decoding of the ciphertext using a first set of a plurality of secret keys, determining locations of errors in the result of the first decoding using a second set of the plurality of secret keys and declaring erasures to the locations, performing second decoding according to a predetermined decoding algorithm and correcting a predetermined number of errors and the declared erasures, and detecting data from a result of correcting the errors and erasures.
|
