Mobile terminal, encrypted contents reproduction method and plaintext data generation method employed for the same
First Claim
1. A mobile terminal adapted to reproduce an encrypted contents file stored in a predetermined storage area as an alert of an incoming call, the mobile terminal comprising:
- a storage section for holding first plaintext data corresponding to a head portion of the encrypted contents file;
decryption means for decrypting the encrypted contents file to generate second plaintext data;
reproduction means for reproducing the first and second plaintext data; and
authentication means for performing authentication processing related to use of the encrypted contents file, wherein the reproduction means reproduces the first plaintext data and in succession to reproduction of the first plaintext data reproduces the second plaintext data when the mobile terminal receives a call, and the authentication means performs the authentication processing simultaneously and in parallel with the reproduction of the first plaintext data by the reproduction means.
2 Assignments
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Accused Products
Abstract
A mobile terminal adapted to reproduce an encrypted contents file stored in a predetermined storage area as an alert of an incoming call includes: a storage section for holding first plaintext data corresponding to a head portion of the encrypted contents file; decryption means for decrypting the encrypted contents file to generate second plaintext data; reproduction means for reproducing the first and second plaintext data; and authentication means for performing authentication processing related to use of the encrypted contents file. The reproduction means reproduces the first plaintext data and in succession to reproduction of the first plaintext data reproduces the second plaintext data when the mobile terminal receives a call. The authentication means performs the authentication processing simultaneously and in parallel with the reproduction of the first plaintext data by the reproduction means.
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Citations
16 Claims
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1. A mobile terminal adapted to reproduce an encrypted contents file stored in a predetermined storage area as an alert of an incoming call, the mobile terminal comprising:
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a storage section for holding first plaintext data corresponding to a head portion of the encrypted contents file;
decryption means for decrypting the encrypted contents file to generate second plaintext data;
reproduction means for reproducing the first and second plaintext data; and
authentication means for performing authentication processing related to use of the encrypted contents file, wherein the reproduction means reproduces the first plaintext data and in succession to reproduction of the first plaintext data reproduces the second plaintext data when the mobile terminal receives a call, and the authentication means performs the authentication processing simultaneously and in parallel with the reproduction of the first plaintext data by the reproduction means. - View Dependent Claims (2, 3, 4)
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5. A method for reproducing an encrypted contents file as an alert of an incoming call in a mobile terminal, first plaintext data corresponding to part of the encrypted contents file including a head portion thereof being held in a predetermined storage area, the encrypted contents reproduction method comprising the steps of:
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(1) reproducing the first plaintext data when the mobile terminal receives a call;
(2) performing authentication processing related to use of the encrypted contents file simultaneously and in parallel with the step (1);
(3) decrypting the encrypted contents file to generate second plaintext data if the authentication processing in the step (2) succeeds; and
(4) reproducing the second plaintext data in succession to the step (1). - View Dependent Claims (6, 7, 8, 12, 13, 14, 15, 16)
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9. A method for reproducing an encrypted contents file as an alert of an incoming call in a mobile terminal, plaintext data corresponding to the encrypted contents file being stored in a secure memory, the encrypted contents reproduction method comprising the steps of:
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(1) reproducing the plaintext data when the mobile terminal receives a call; and
(2) performing authentication processing related to use of the encrypted contents file simultaneously and in parallel with the step (1). - View Dependent Claims (10, 11)
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Specification