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METHOD FOR ENCRYPTING DIGITAL FILE, METHOD FOR DECRYPTING DIGITAL FILE, APPARATUS FOR PROCESSING DIGITAL FILE AND APPARATUS FOR CONVERTING ENCRYPTION FORMAT
METHOD FOR ENCRYPTING DIGITAL FILE, METHOD FOR DECRYPTING DIGITAL FILE, APPARATUS FOR PROCESSING DIGITAL FILE AND APPARATUS FOR CONVERTING ENCRYPTION FORMAT
Disclosed herein are a digital file encryption method, a digital file decryption method, a digital file processing apparatus, and an encryption format conversion apparatus. The digital file encryption method includes encrypting a file using specific encryption information, storing the encrypted file in a file system, and storing the encryption information in a stream provided by the file system. Accordingly, since file lengths before and after encryption are identical to each other, an application needs not to consider a header length or perform offset correction when using an encrypted file.
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