CN202043284U

CN202043284U - Phone-card interlocking device and mobile terminal

Info

Publication number: CN202043284U
Application number: CN2010206727375U
Authority: CN
Inventors: 黄守旺
Original assignee: Shenzhen Temobi Science and Technology Co Ltd
Current assignee: World (Shanghai) Technology Development Co., Ltd.
Priority date: 2010-12-20
Filing date: 2010-12-20
Publication date: 2011-11-16
Anticipated expiration: 2020-12-20

Abstract

The utility model discloses a phone-card interlocking device and mobile terminal. A serial number of a first encryption module and a secret key in a memory module are encrypted through a second encryption module when powered up for the first time, encrypted files are generated and saved in the first encryption module, and simultaneously the secret key in the memory module is deleted. A decryption module decrypts the serial number of the first encryption module and the encrypted files, a secret key is generated, an authentication module reads a random number from a charging card, an integrated circuit card identification code (ICCID) of the charging card and the decrypted secret key generate authentication cipher text which is sent to the charging card, and the charging card detects whether the authentication cipher text is legal or not, thereby avoiding the secret key being directly saved in the phone-card interlocking device or mobile terminal, reducing the possibility of secret key revealing and code breaking, and enhancing safety of phone-card interlocking.

Description

A kind of device of interlocking of phone and card and portable terminal

Technical field

The utility model relates to the mobile communication technology field, relates in particular to a kind of device and portable terminal of interlocking of phone and card.

Background technology

Mobile communication carrier is in order to win more user, to bring voice and data traffic to oneself as much as possible, customized the service of some differentiation, characterization, formulated different expenses standards simultaneously, as Public CDMA WLL, monitor terminal etc.; In order to safeguard the rights and interests of self, operator stipulates that these rate cards can only be used on the terminal equipment of appointment, i.e. interlocking of phone and card.

Early stage interlocking of phone and card mechanism is to utilize the IMEI of wireless module (International MobileEquipment Identity, the International Mobile Equipment Identity sign indicating number), PIN (Personal IdentificationNumber, personal user's password) sign indicating number, PUK (PIN UnBlock, the PIN PUK) sign indicating number waits by specific calculating, realize the interlocking of terminal and rate card, this machine-processed confidentiality is very poor, is easy to crack; Method than main flow is now: the some group keys of terminal the inside storage, random number decision on the rate card selects a certain group key to calculate encrypt data, and terminal is issued the rate card with encrypt data, if the authentication success, the registrable network of equipment, otherwise registration the time is directly refused by network terminal.The drawback of this method is that key directly is stored in device or portable terminal, is easy to reveal and be cracked, in case key is cracked, terminal just is easy to be replicated, and the interests of equipment manufacturers will suffer damage, and does not also just realize real interlocking of phone and card.

Summary of the invention

The purpose of the utility model embodiment is to propose a kind of device of interlocking of phone and card, be intended to solve that key directly is stored in interlocking of phone and card device or portable terminal in the prior art, be easy to reveal and be cracked, in case key is cracked, interlocking of phone and card device or portable terminal just are easy to be replicated, the interests of equipment manufacturers will suffer damage, and also just not realize the problem of real interlocking of phone and card.

The utility model embodiment is achieved in that a kind of device of interlocking of phone and card, comprises memory module, rate card, authentication module, it is characterized in that, described device also comprises first encrypting module, second encrypting module, deciphering module; Described first encrypting module has globally unique sequence number; Described memory module has many group keys; Described second encrypting module is used for the sequence number of first encrypting module and the key in the memory module are encrypted, and generates encrypt file and deposits first encrypting module in, deletes the key in the memory module simultaneously; Described deciphering module is used for the sequence number of first encrypting module and encrypt file are decrypted, and generates key; Described authentication module is used to read the random number from the rate card, ICCID (the Integrate circuit card identity integrated circuit card identification code of rate card, being solidificated in the SIM cards of mobile phones) key after information and the deciphering generates the authentication ciphertext, and sends to the rate card; Described rate card is used to detect the legitimacy of authentication ciphertext.

Another purpose of the utility model embodiment is to propose a kind of portable terminal that comprises the device of described interlocking of phone and card.

The beneficial effects of the utility model:

Second encrypting module is encrypted the sequence number of first encrypting module and the key in the memory module module when the system is first powered on, and the generation encrypt file also deposits in first encrypting module, deletes the key in the memory module simultaneously; Deciphering module is decrypted the sequence number and the encrypt file of first encrypting module, generate key, authentication module reads from the key after the integrated circuit card identification code ICCID of the random number of rate card, rate card and the deciphering and generates the authentication ciphertext, and send to the rate card, whether the rate card detects the authentication ciphertext legal, thereby avoid key directly to be stored in device or portable terminal, reduced key and revealed and the possibility that is cracked, strengthened the fail safe of interlocking of phone and card.

Description of drawings

Fig. 1 is the structural representation of a kind of interlocking of phone and card device of the utility model embodiment.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated, for convenience of explanation, only show the part relevant with the utility model embodiment.Should be appreciated that the specific embodiment that this place is described, only be used to explain the utility model, not in order to restriction the utility model.

The utility model is encrypted the sequence number of first encrypting module and the key in the memory module when the system is first powered on by second encrypting module, and the generation encrypt file also deposits in first encrypting module, deletes the key in the memory module simultaneously; Deciphering module is decrypted the sequence number and the encrypt file of first encrypting module, generate key, authentication module reads from the key after the integrated circuit card identification code ICCID of the random number of rate card, rate card and the deciphering and generates the authentication ciphertext, and send to the rate card, whether the rate card detects the authentication ciphertext legal, thereby avoid key directly to be stored in interlocking of phone and card device or portable terminal, reduced key and revealed and the possibility that is cracked, strengthened the fail safe of interlocking of phone and card.

Embodiment one

General interlocking of phone and card device all can comprise memory module, rate card, authentication module, and the interlocking of phone and card device that the utility model provides also comprises first encrypting module, second encrypting module, deciphering module; Described memory module has many group keys in advance, and described first encrypting module has globally unique sequence number; When described second encrypting module is used for powering on first the sequence number of first encrypting module and the key in the memory module are encrypted, the generation encrypt file also deposits in first encrypting module, deletes the key in the memory module simultaneously; Described deciphering module is used for the sequence number of first encrypting module and encrypt file are decrypted, and generates key; Described authentication module is used to read the random number from the rate card, ICCID (the Integrate circuit card identity of rate card, the integrated circuit card identification code, being solidificated in the SIM cards of mobile phones) key after information and the deciphering generates the authentication ciphertext, and sending to the rate card, described rate card is used to detect the legitimacy of authentication ciphertext.

Described key is many group keys that interlocking of phone and card device or portable terminal preset when dispatching from the factory, and generally comprises the interlocking of phone and card device or the pairing key of portable terminal of batch or a plurality of batches;

Whether described rate card detects the authentication ciphertext legal, if legal, can use interlocking of phone and card device or portable terminal, otherwise can not use interlocking of phone and card device or portable terminal;

When the system is first powered on the sequence number of first encrypting module and the key in the memory module module are encrypted by second encrypting module in the present embodiment, the generation encrypt file also deposits in first encrypting module, deletes the key in the memory module simultaneously; Deciphering module is decrypted the sequence number and the encrypt file of first encrypting module, generate key, authentication module reads from the key after the integrated circuit card identification code ICCID of the random number of rate card, rate card and the deciphering and generates the authentication ciphertext, and send to the rate card, whether the rate card detects the authentication ciphertext legal, thereby avoid key directly to be stored in interlocking of phone and card device or portable terminal, reduced key and revealed and the possibility that is cracked, strengthened the fail safe of interlocking of phone and card.

Embodiment two

The utility model embodiment is a kind of device of interlocking of phone and card, and general interlocking of phone and card device comprises memory module, rate card, authentication module, and the interlocking of phone and card device that the utility model provides also comprises first encrypting module, second encrypting module, deciphering module; Described first encrypting module has globally unique sequence number; Described first encrypting module also comprises disposable programmable memory cell (One Time Programmab, OTP memory cell); Described memory module has many group keys; Described second encrypting module is used for when the system is first powered on the sequence number of first encrypting module and the key in the memory module being encrypted, generate encrypt file and deposit disposable programmable memory cell in first encrypting module in, delete the key in the memory module simultaneously; Described deciphering module is used for the encrypt file of storing in the sequence number of first encrypting module and the disposable programmable memory cell is decrypted, and generates key; Described authentication module is used to read the random number from the rate card, the integrated circuit card identification code ICCID of rate card and the key after the deciphering and generates the authentication ciphertext, and sends to the rate card, and described rate card is used to detect the legitimacy of authentication ciphertext.

By second encrypting module sequence number of first encrypting module and the key in the memory module module are encrypted in the present embodiment, generate encrypt file and deposit OTP memory cell in first encrypting module in, the cipher key decryption block of deleting simultaneously in the memory module is decrypted the sequence number and the encrypt file of first encrypting module, generate key, authentication module reads the random number in the rate card, key after the integrated circuit card identification code ICCID of rate card and the deciphering generates the authentication ciphertext, and send to the rate card, whether the rate card detects the authentication ciphertext legal, thereby avoid key directly to be stored in interlocking of phone and card device or portable terminal, increase the OTP memory cell at first encrypting module, ensure that first encrypting module can only be written into once, can not write any information more later on, further guarantee the fail safe of key; Reduce key and revealed and the possibility that is cracked, strengthened the fail safe of interlocking of phone and card.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1. the device of an interlocking of phone and card comprises memory module, rate card, authentication module, it is characterized in that, described interlocking of phone and card device also comprises first encrypting module, second encrypting module, deciphering module; Described first encrypting module has globally unique sequence number; Described memory module has many group keys; Described second encrypting module is used for the sequence number of first encrypting module and the key in the memory module are encrypted, and generates encrypt file and deposits first encrypting module in, deletes the key in the memory module simultaneously; Described deciphering module is used for the sequence number of first encrypting module and encrypt file are decrypted, and generates key; Described authentication module is used to read the random number from the rate card, the integrated circuit card identification code of rate card and the key after the deciphering and generates the authentication ciphertext, and sends to the rate card; Described rate card is used to detect the legitimacy of authentication ciphertext.

2. the device of interlocking of phone and card as claimed in claim 1, it is characterized in that, first encrypting module also comprises the disposable programmable memory cell, is used for depositing described second encrypting module sequence number of described first encrypting module and the key in the described memory module are encrypted the encrypt file of generation.

3. one kind comprises the portable terminal of interlocking of phone and card device according to claim 1.