Method for encrypting content, method for decrypting content and electronic apparatus applying the same

摘要

A method for encrypting content includes using a plurality of different encryption schemes to produce encrypted content. Encryption information is provided so as to indicate which of the plurality of different encryption schemes is used on portions of the content that was encrypted. Encryption information and the encrypted content are both sent as a content stream to another device. The decryption involves using the encryption information to help control the decryption so that the correct one of a plurality of different decryption schemes is applied to the proper portions of the encrypted content.

主权项

1. A method for encrypting content, the method comprising:
encrypting by using a plurality of different encrypting schemes to a single content to provide encrypted content; and adding encryption information to the encrypted content; wherein the encryption information indicates ones of the plurality of different encrypting schemes for subsequent use in decrypting corresponding portions of the encrypted content, and wherein the content is encrypted after an authentication to a connected apparatus succeeds, wherein the single content comprises a plurality of frames, each frame comprises a plurality of fields, and each frame or each field comprises a plurality of lines, wherein the encrypting comprises performing encryption by applying a first encryption method to a first line and a second encryption method to a second line through the remaining lines among the lines which form the frame or field, and wherein the adding encryption information comprises adding first information indicating the first encryption method which is used in the first line to the first line and adding second information indicating the second encryption method which is used in the second line to the second line.