Information processing apparatus, print control apparatus, print control system, storage medium of storing computer-readable program, and program

Abstract

An information processing apparatus, which encrypts print data (PDL), receives a personal identification code (PIN) input by a user, generates a random number (rnd), encrypts the generated random number by using the personal identification code or an encryption key generated based on the personal identification code, converts the personal identification code by using a predetermined function, and encrypts print data by using the random number as an encryption key, thereby maintaining security in the printing.

1 . A print control apparatus comprising:
 a reception unit configured to receive an encrypted random number, a first personal identification code subjected to predetermined conversion, and encrypted print data;   a code reception unit configured to receive a second personal identification code input by a user;   a code conversion unit configured to convert the received second personal identification code by using a predetermined function;   a judgment unit configured to judge whether or not the converted first personal identification code is the same as the converted second personal identification code;   a random number decryption unit configured to, in a case where the converted first and second personal identification codes are the same, decrypt the encrypted random number by using the second personal identification code or a key based on the second personal identification code as a decryption key; and   a print data decryption unit configured to, in the case where the converted first and second personal identification codes are the same, decrypt the encrypted print data by using the decrypted random number as a decryption key.   
     
     
         2 . A print control apparatus according to  claim 1 , wherein said code conversion unit converts the second personal identification code by using a one-way function. 
     
     
         3 . A print control apparatus according to  claim 2 , wherein said code conversion unit generates a hash value of the second personal identification code. 
     
     
         4 . A print control apparatus according to  claim 1 , further comprising a print processing unit configured to execute a print process of the decrypted print data. 
     
     
         5 . A print control method comprising the steps of:
 receiving an encrypted random number, a first personal identification code subjected to predetermined conversion, and encrypted print data;   receiving a second personal identification code input by a user;   converting the received second personal identification code by using a predetermined function;   judging whether or not the converted first personal identification code is the same as the converted second personal identification code;   in a case where it is judged that the converted first and second personal identification codes are the same, decrypting the encrypted random number by using the second personal identification code or a key based on the second personal identification code as a decryption key; and   in the case where it is judged that the converted first and second personal identification codes are the same, decrypting the encrypted print data by using the decrypted random number as a decryption key.   
     
     
         6 . A print control method according to  claim 5 , further comprising the step of executing a print process of the decrypted print data. 
     
     
         7 . A non-transitory computer-readable storage medium which stores a computer-executable program for causing a computer to execute a print control method, said computer program comprising:
 a reception module for receiving an encrypted random number, a first personal identification code subjected to predetermined conversion, and encrypted print data;   a code reception module for receiving a second personal identification code input by a user;   a code conversion module for converting the received second personal identification code by using a predetermined function;   a judgment module for judging whether or not the converted first personal identification code is the same as the converted second personal identification code;   a random number decryption module for, in a case where it is judged that the converted first and second personal identification codes are the same, decrypting the encrypted random number by using the second personal identification code or a key based on the second personal identification code as a decryption key; and   a print data decryption module for, in the case where it is judged that the converted first and second personal identification codes are the same, decrypting the encrypted print data by using the decrypted random number as a decryption key.