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AssigneeNtt Docomo, Inc.
InventorsSatoru Morota, Yasutaka Urakawa, Tatsuya Kato, Kenji Ishii, Masanori Fujita
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The present invention provides a mobile communications terminal and a data transmitting method which can prevent the alteration of programs that are the object of virus protection study. In the mobile communications terminal 10 of the present invention, a digital signature is applied to the program 26 that is the object of virus protection study using (for example) a public key encryption program stored in an IC chip 12 such as a UIM or the like. Accordingly, in cases where this program is transmitted via a network 28 by the user, the alteration of the program 26 by a third party at an intermediate point in the network 26 can be prevented. Furthermore, the presence or absence of any alteration can be verified in the virus protection study object program receiving server 32 that receives this program 26. Moreover, since the transmitting party can be easily and securely specified by the digital signature, the safety of the virus protection study object program receiving server 32 that receives programs 26 that are the object of virus protection study is improved.
A mobile communications terminal which applies a digital signature to a program that is the object of virus protection study using a public key encryption program stored in an IC chip in which information that distinguishes the user is stored, and which transmits said program that is the object of virus protection study to which said digital signature has been applied to a server that receives programs that are the object of virus protection study.
A data transmitting method in which a digital signature is applied to a program that is the object of virus protection study in a mobile communications terminal using a public key encryption program stored in an IC chip in which information that distinguishes the user is stored, and said program that is the object of virus protection study to which said digital signature has been applied is transmitted from said mobile communications terminal to a server that receives programs that are the object of virus protection study.
Dependencies are inferred from the claim text.