| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce an operation amount of encryption or decryption of information in an installation package of software or the like, to enhance the operability or convenience for encryption or decryption of the information while assuring confidentiality of the information, and to facilitate partial change or update of the information even after the information is secured. <P>SOLUTION: An install package 2 is divided into encryption segments 6 which should be encrypted and non-encryption segments 7 which should not be encrypted in accordance with a prescribed rule, the encryption segments 6 are encrypted, a control table 5 showing positions of the encryption segments 6 or positions of the non-encryption segments 7 on the installation package 2 is generated, and the installation package 2 in which the encryption segments 6 have been encrypted is coupled to the control table 5. Parts including an API call instruction are defined as encryption segments in the installation package 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
