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DIGITAL FILE ENCRYPTION METHOD, DIGITAL FILE DECRYPTION METHOD, DIGITAL FILE PROCESSING APPARATUS AND ENCRYPTION FORMAT CONVERTING APPARATUS
DIGITAL FILE ENCRYPTION METHOD, DIGITAL FILE DECRYPTION METHOD, DIGITAL FILE PROCESSING APPARATUS AND ENCRYPTION FORMAT CONVERTING APPARATUS
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机译:数字文件加密方法,数字文件解密方法,数字文件处理设备和加密格式转换设备
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摘要
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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