Scanned image disclosure apparatus, method and storage medium; electronic mail transmission apparatus, method and storage medium; and internet facsimile transmission apparatus

1. A scanned image disclosure apparatus comprising:

a disclosure unit that encrypts and discloses to a disclosure destination a scanned image by using a public key or a private key relating to a public key certificate that has been verified to be valid;

a re-verification unit that judges whether or not re-verification of the validity of the public key certificate is necessary during execution for the disclosure unit and performs re-verification when it is judged to be necessary; and

a termination unit that terminates the execution for the disclosure unit when the public key certificate was judged to be invalid by the re-verification unit;

said disclosure unit performing an execution on the basis of a job that commands the disclosure of the scanned image;

said re-verification unit judging that re-verification is necessary when the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete.

2. A scanned image disclosure apparatus according to claim 1 , wherein:

the disclosure unit discloses the scanned image to a disclosure destination, which is a transmission destination, by attaching the scanned image to an e-mail.

3. A scanned image disclosure apparatus according to claim 1 , wherein:

the public key certificate certifies a public key of the transmission destination of an email; and

the encryption process in the disclosure unit uses the public key to encrypt the e-mail.

4. A scanned image disclosure apparatus according to claim 1 , wherein:

the public key certificate certifies a public key of a sender of an e-mail; and

the encryption process in the disclosure unit signs the e-mail with a digital signature by using a private key corresponding to the public key.

5. A scanned image disclosure apparatus according to claim 1 , further comprising:

a verification unit that verifies the validity of the public key certificate when a disclosure destination of the scanned image has been input or when a disclosure command for the scanned image has been input;

the public key or the private key that is used by the disclosure unit is a public key or a private key relating to the public key certificate that has been verified to be valid by the verification unit.

6. A scanned image disclosure apparatus according to claim 1 , wherein:

the disclosure unit performs an execution on the basis of a disclosure command that was input; and

the re-verification unit judges that re-verification is necessary when a predetermined time has elapsed from the time a disclosure command was input.

7. A scanned image disclosure apparatus according to claim 1 , wherein an e-mail transmission apparatus comprises:

a certificate acquisition unit that searches for and acquires, when the public key certificate was judged to be invalid by the re-verification unit, a valid public key certificate; and

a re-disclosure unit that encrypts and discloses the scanned image by using a public key or a private key when a corresponding valid public key certificate was acquired by the certificate acquisition unit.

8. A method comprising:

encrypting, using an electronic device, a scanned image by using a public key or a private key relating to a public key certificate that has been verified to be valid;

disclosing the encrypted scanned image to a disclosure destination in response to a job that commands the disclosure of the scanned image;

judging whether or not re-verification of the validity of the public key certificate is necessary during execution of the disclosure and performing re-verification when it is judged to be necessary, re-verification being necessary when the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete; and

terminating the execution of the disclosure when the public key certificate was judged to be invalid in the re-verification.

9. A computer-readable storage device storing a program for executing on a computer, the program comprising:

causing the computer to encrypt a scanned image by using a public key or a private key relating to a public key certificate that has been verified to be valid;

causing the computer to disclose the encrypted scanned image to a disclosure destination in response to a job that commands the disclosure of the scanned image;

causing the computer to judge whether or not re-verification of the validity of the public key certificate is necessary during execution of the disclosure and performing re-verification when it is judged to be necessary, re-verification being necessary if the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete; and

causing the computer to terminate the execution of the disclosure when the public key certificate was judged to be invalid in the re-verification.

10. An e-mail transmission apparatus comprising:

a transmission unit that encrypts and transmits an e-mail by using a public key or a private key relating to a public key certificate that has been verified to be valid;

a re-verification unit that judges whether or not re-verification of the validity of the public key certificate is necessary during execution for the transmission unit and performs re-verification when it is judged to be necessary; and

a termination unit that terminates the execution for the transmission unit when the public key certificate was judged to be invalid by the re-verification unit;

said transmission unit performing an execution on the basis of a job that commands the transmission of the e-mail;

said re-verification unit judging that re-verification is necessary when the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete.

11. An e-mail transmission apparatus according to claim 10 , wherein:

the public key certificate certifies a public key of the transmission destination of the e-mail; and

the encryption process in the transmission unit uses the public key to encrypt the e-mail.

12. An e-mail transmission apparatus according to claim 10 , wherein:

the public key certificate certifies a public key of a sender of the e-mail; and

the encryption process in the transmission unit signs the e-mail with a digital signature by using a private key corresponding to the public key.

13. An e-mail transmission apparatus according to claim 10 , further comprising:

a verification unit that verifies the validity of the public key certificate when a transmission destination of the e-mail has been input or when a transmission command for the e-mail has been input;

the public key or the private key that is used by the transmission unit is a public key or a private key relating to the public key certificate that has been verified to be valid by the verification unit.

14. An e-mail transmission apparatus according to claim 10 , further comprising:

the transmission unit that performs an execution on the basis of a transmission command that was input; and

the re-verification unit that judges that re-verification is necessary when a predetermined time has elapsed from the time the transmission command was input.

15. An e-mail transmission apparatus according to claim 10 , further comprising:

a certificate acquisition unit that searches for and acquires, when the public key certificate is judged to be invalid by the re-verification unit, a valid public key certificate; and

a re-transmission unit that encrypts and transmits the e-mail by using a public key or a private key when a corresponding valid public key certificate was acquired by the certificate acquisition unit.

16. An internet facsimile transmission apparatus comprising:

a unit that attaches a scanned image to an e-mail;

a transmission unit that encrypts and transmits the e-mail by using a public key or a private key relating to a public key certificate that has been verified to be valid;

a re-verification unit that judges whether or not re-verification of the validity of the public key certificate is necessary during execution for the transmission unit and performs re-verification when it is judged to be necessary; and

a termination unit that terminates the execution for the transmission unit when the public key certificate was judged to be invalid by the re-verification unit;

the encryption process in the transmission unit performs encryption on the scanned image or performs encryption on the e-mail including the scanned image;

said transmission unit performing an execution on the basis of a job that commands the transmission of the e-mail;

said re-verification unit judging that re-verification is necessary when the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete.

17. A method comprising:

encrypting, using an electronic device, by using a public key or a private key relating to a public key certificate that has been verified to be valid;

transmitting the encrypted e-mail in response to a job that commands the disclosure of the scanned image;

judging whether or not re-verification of the validity of the public key certificate is necessary during execution of the transmission and performing re-verification when it is judged to be necessary, re-verification being necessary when the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete; and

terminating the execution of the transmission when the public key certificate was judged to be invalid in the re-verification.

18. A computer-readable storage device storing a program for executing on a computer, the program comprising:

causing the computer to encrypt by using a public key or a private key relating to a public key certificate that has been verified to be valid;

causing the computer to transmit the encrypted e-mail in response to a job that commands the disclosure of the scanned image;

causing the computer to judge whether or not re-verification of the validity of the public key certificate is necessary during execution of the transmission and performing re-verification when it is judged to be necessary, re-verification being necessary when the job is a job which had verification of the validity of the public key certificate previously judged and is to be re-transmitted due to an interruption in the execution of the job such that the job is incomplete; and

causing the computer to terminate the execution of the transmission when the public key certificate was judged to be invalid in the re-verification.