WO2018195804A1 - 一种集成数据安全功能的卫星导航芯片及其应用方法 - Google Patents

一种集成数据安全功能的卫星导航芯片及其应用方法 Download PDF

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Publication number
WO2018195804A1
WO2018195804A1 PCT/CN2017/082004 CN2017082004W WO2018195804A1 WO 2018195804 A1 WO2018195804 A1 WO 2018195804A1 CN 2017082004 W CN2017082004 W CN 2017082004W WO 2018195804 A1 WO2018195804 A1 WO 2018195804A1
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information
security
encryption
decryption
module
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PCT/CN2017/082004
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English (en)
French (fr)
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张思静
邬泳
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深圳华大北斗科技有限公司
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Priority to PCT/CN2017/082004 priority Critical patent/WO2018195804A1/zh
Publication of WO2018195804A1 publication Critical patent/WO2018195804A1/zh
Priority to US16/396,754 priority patent/US11204427B2/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • G01S19/16—Anti-theft; Abduction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/20—Integrity monitoring, fault detection or fault isolation of space segment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position

Definitions

  • the invention relates to the field of information security for satellite navigation applications, in particular to a satellite navigation chip integrated with data security function and an application method thereof.
  • satellite positioning is one of them. Achieving satellite positioning, satellite navigation chips, is an indispensable part.
  • the satellite navigation chip captures/tracks satellite signals and provides accurate user location information, which is the basis for realizing the application of three-dimensional positioning information.
  • the security of these positioning information in transmission has great hidden dangers.
  • Developing a satellite navigation chip that can encrypt positioning information becomes a must in some security fields, especially for special applications such as police equipment, child safety monitoring system, information security, etc. Positioning information is easily leaked during transmission. Cause economic losses and bring security risks.
  • the main object of the present invention is to provide a satellite navigation chip integrated with data security function and an application method thereof, which can encrypt or decrypt received information to realize data transmission security.
  • a satellite navigation chip integrated with data security functions including a radio frequency module, a navigation baseband module, and a power module,
  • the processor is configured to determine that the information needs to be encrypted or decrypted, send the security setting information to the security module, and send the information fed back by the security module;
  • the security module is used to encrypt or decrypt the security settings according to the set security mode.
  • the processor is configured to determine, according to the type of the security command received by the externally, the encryption or decryption, and select the to-be-processed information in the security setting information according to the preset encryption and decryption information type;
  • the security requirement information includes: to-be-processed information, and an encryption and decryption command.
  • the security module further includes a security setting unit and a security processing unit;
  • a security setting unit for setting an encryption and decryption method
  • the security processing unit is configured to read the encryption and decryption mode in the security setting unit according to the encryption and decryption command in the receiving security setting information, and encrypt or decrypt the processing information.
  • the chip further includes: a memory,
  • the memory is configured to store a key required for encryption and decryption
  • a security processing unit for reading a key in the memory and encrypting or decrypting the information to be processed according to the key.
  • the invention also provides an application method of a satellite navigation chip integrated with data security function, the method comprises: the navigation chip receives the information, determines that the information needs to be encrypted or decrypted; determines that there is a preset encryption and decryption mode, and the navigation chip is preset according to the preset
  • the encryption and decryption method treats the processed information for encryption and decryption.
  • the determining information needs to be encrypted or decrypted, including: the navigation chip receives the type of the value in the externally sent security command, determines whether the current need to be encrypted or decrypted according to the type of the value, and then selects the to-be-processed information according to the preset type of the encryption and decryption information.
  • the invention can ensure the security of the information by selectively encrypting or decrypting the received information.
  • the encryption or decryption manner can be preset, so that the security performance is more flexible, and the encryption or decryption information is prevented from being cracked. , further improving the security of the chip.
  • FIG. 1 is a schematic structural diagram of a satellite navigation chip implementing integrated data security function according to the present invention
  • FIG. 2 is a flow chart of an application method of a satellite navigation chip integrated with a data security function according to the present invention.
  • the present invention provides a satellite navigation chip integrated with data security functions.
  • the satellite navigation chip includes: a radio frequency module 101, a navigation baseband module 102, a power module 103, a memory 104, a processor 105, and a security module 106.
  • the security module 106 can be separate or integrated within the processor 105:
  • the radio frequency module 101 is configured to send the satellite signal received by the antenna to the navigation baseband module 102; the operation performed here is mainly after the RF front end shaping and down-conversion processing, and is converted into a digital intermediate frequency signal by analog-to-digital conversion;
  • the baseband module 102 is configured to perform the baseband signal processing on the digital intermediate frequency signal processed by the radio frequency module, complete the capture and tracking of the antenna signal, and transmit the original navigation message information and the observation information to the processor 105.
  • the processor 105 is configured to complete the analysis of the original navigation information, the calculation of the observation measurement, the analysis of the user position speed clock difference, and the analysis of the input command, determine that the information needs to be encrypted or decrypted, and send the information to be safely set to the security module.
  • 106 Send the received information encrypted or decrypted by the security module 106; if the encryption and decryption are not needed, send the information directly; the security setting information includes the to-be-processed information and the security command, where the to-be-processed information includes However, it is not limited to navigation information and the like.
  • the security module 106 is configured to encrypt or decrypt the information to be securely set according to a security mode set by the user, and send the processed information to the processor 105.
  • the processor 105 is configured to send the information to be securely set to the security module 106 according to the security command received externally and the type of the encryption and decryption information set in advance; specifically, the processor 105 reads the value type in the security command. Determining whether to encrypt or decrypt according to the type of the value, and then selecting information corresponding to the type of the preset encryption and decryption information in the information to be securely set according to the preset type of encryption and decryption information, as the information to be processed and the security to be read. The commands are sent together to the security module 106.
  • the interface for sending the security command may be externally provided through the serial port, where the format of the security command, that is, the encryption and decryption command may be composed of a command header and a check digit, wherein the command header includes a data start byte CLA, an encryption and decryption type P1 or
  • the specific meanings of P2 composition, CLA, and P1 and P2 are shown in Table 1, but are not limited to this format.
  • the processor 105 of Table 1 determines whether it is currently encrypted or decrypted according to the type in the security command, such as "P1 '00'" being encrypted.
  • the type of the encryption and decryption information set in advance is navigation information or the like, and it is possible to preset which type of information is securely set.
  • the security module 106 includes: a security setting unit 1061, a security processing unit 1062;
  • the security setting unit 1061 is configured to set an encryption and decryption mode.
  • the encryption and decryption mode can be set through a serial port, and the format according to the setting is set, as shown in Table 1, for example, “INS'0xb0'”; Using the SM4 algorithm for encryption and decryption;
  • the security processing unit 1062 is configured to receive the security setting information sent by the processor 105, according to the encryption and decryption command in the security setting information, such as “P1′00′”, and the read security setting unit 1071
  • the security mode that is, the encryption or decryption method, for example, the SM4 algorithm encrypts or decrypts the information to be processed.
  • the memory 104 is configured to store a key required for encryption and decryption, and specifically, may be set according to the format described in Table 1 through a serial port; for example, “CLA'CF'LEN'01'KEY'1'Check' 2'”.
  • the security processing unit 1062 is configured to read a key in the memory 104 and perform encryption or decryption processing on the information to be processed according to the key.
  • the process of encrypting or decrypting the information to be processed by the key is a process that can be implemented by the prior art, and will not be described in detail in the solution of the present invention.
  • the processor 105 is further configured to encapsulate the received information encrypted or decrypted by the security module 106 according to the communication protocol format as described in Table 2. Specifically: "CLA 'BF' INS 'xx' P1/P2 'xx' LEN 'xx' data xx Check 'xx'". The meaning of the values after the code is shown in Table 2.
  • the invention also provides an application method of a satellite navigation chip integrated with data security function, and the specific process is shown in FIG. 2:
  • Step 201 The navigation chip receives the information, determines that the information needs to be encrypted or decrypted, and then performs step 202; the information includes positioning information, data, and the like; the determining information needs to be encrypted or decrypted, and the navigation chip receives the externally sent security command.
  • the value type determines whether the current encryption or decryption is required according to the value type, and then selects the information corresponding to the preset encryption and decryption information type as the to-be-processed information according to the preset encryption and decryption information type, for example, the positioning information; If encryption is not required, step 204 is directly executed.
  • Step 202 it is determined whether there is a preset encryption and decryption mode, and if so, step 203 is performed; if not, step 204 is performed;
  • Step 203 The navigation chip performs security processing, that is, performs encryption or decryption, according to the preset encryption and decryption manner. Specifically, the navigation chip reads the preset encryption and decryption mode, performs encryption or decryption processing on the processing information according to the preset encryption or decryption manner, and then encapsulates the information according to the communication format shown in Table 2, and performs step 204. .
  • Step 204 Send the information out.

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  • Engineering & Computer Science (AREA)
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  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
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  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
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  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

一种集成数据安全功能的卫星导航芯片，包括射频模块（101）、导航基带模块（102）、电源模块（103），处理器（105），用于确定信息需要加密或解密，将需安全设置的信息发送给安全模块（106），并将接收的安全模块（106）发送的信息发送出去；安全模块（106），用于根据设定的安全方式对需安全设置信息加密或解密。采用该集成数据安全功能的卫星导航芯片及其应用方法，可以对接收的信息进行加密或解密，提高数据传输的安全性。

Description

一种集成数据安全功能的卫星导航芯片及其应用方法 技术领域
本发明涉及卫星导航应用的信息安全领域，特别是一种集成数据安全功能的卫星导航芯片及其应用方法。
背景技术
随着全球卫星导航定位系统的建设，各种相关应用也随之产生，卫星定位就是其中的一种。实现卫星定位，卫星导航芯片，是不可或缺的一部分。卫星导航芯片捕获/跟踪卫星信号并提供准确的用户位置信息，是实现三维定位信息应用的基础，但是这些定位信息在传递中的安全性存在很大隐患，随着对信息安全日益增长的需求，开发一款能将定位信息加密的卫星导航芯片成为一些安全领域的必备，尤其是一些特殊用途例如警用设备、儿童老人安全监控系统、信息安全等方面，定位信息在传输过程中容易泄漏从而造成经济损失、带来安全隐患。
发明内容
有鉴于此，本发明的主要目的在于提供一种集成数据安全功能的卫星导航芯片及其应用方法，可以对接收的信息进行加密或解密，实现数据传输的安全性。
为达到上述目的，本发明的技术方案是这样实现的：
一种集成数据安全功能的卫星导航芯片，包括射频模块、导航基带模块、电源模块，
处理器，用于确定信息需要加密或解密，将需安全设置信息发送给安全模块，并将安全模块反馈的信息发送出去；
安全模块，用于根据设定的安全方式对需安全设置信息加密或解密。
上述方案中，所述处理器，用于根据外部接收的安全命令中数值类型，判断需加密或解密，根据预设的加解密信息类型，选取需安全设置信息中的待处理信息；
所述需安全设置信息包括：待处理信息、加密解密命令。
上述方案中，所述安全模块进一步包括安全设置单元、安全处理单元；
安全设置单元，用于设置加密解密方式；
安全处理单元，用于根据所述接收安全设置信息中的加解密命令，读取安全设置单元中的加密解密方式，对待处理信息进行加密或解密。
上述方案中，该芯片进一步包括：存储器，
所述存储器，用于存储加密解密所需的密钥；
安全处理单元，用于读取存储器中的密钥，根据密钥对待处理信息进行加密或解密。
本发明还提供了一种集成数据安全功能的卫星导航芯片的应用方法，该方法包括：导航芯片接收信息，确定信息需加密或解密；确定有预设的加解密方式，导航芯片根据预设的加解密方式对待处理信息进行加解密。
上述方案中，所述确定信息需要加密或解密包括：导航芯片接收外部发送的安全命令中的数值类型，根据数值类型判断当前需加密还是解密，然后根据预设的加解密信息类型选取待处理信息。
本发明通过对接收的信息进行有选择的加密或解密，可以保证信息的安全性，在加密或解密时，可以预先设置加密或解密的方式，使安全性能更加灵活，避免加密或解密信息被破解，进一步提高了芯片的安全性。
附图说明
图1为本发明中实现集成数据安全功能的卫星导航芯片结构示意图；
图2为本发明中集成数据安全功能的卫星导航芯片的应用方法流程图。
具体实施方式
本发明提供了一种集成数据安全功能的卫星导航芯片，如图1所示，该卫星导航芯片包括：射频模块101、导航基带模块102、电源模块103、存储器104、处理器105以及安全模块106，其中，安全模块106可以单独或者集成在处理器105内部：
射频模块101，用于将天线接收的卫星信号处理完后发送给导航基带模块102；这里完成的操作主要是射频前端整形、降频处理之后，通过模数转换为数字中频信号；
导航基带模块102，用于完成经射频模块处理后的数字中频信号进行基带信号处理，完成天线信号的捕获、跟踪，并将原始的导航电文信息和观测量信息传给处理器105。
处理器105，用于完成对原始导航信息的解析、观测量的计算、用户位置速度钟差的解析以及判断输入命令的解析，确定信息需要加密或解密，将需安全设置的信息发送给安全模块106；将接收到的经过安全模块106加密或解密后的信息发送出去；若不需要加解密，则直接发送出去；所述需安全设置信息包括待处理信息以及安全命令，这里的待处理信息包括但不限于导航信息等。
安全模块106，用于根据用户设定的安全方式对需安全设置的信息加密或解密，并将处理后的信息发送给处理器105。
进一步的，处理器105，用于根据外部接收的安全命令以及预先设置的加解密信息类型，将需安全设置的信息发送给安全模块106；具体的，处理器105读取安全命令中数值类型，根据数值类型判断是加密还是解密，然后根据预设的加解密信息类型，选取需安全设置的信息中，与所述预设加解密信息类型相符的信息，作为待处理信息与所读取的安全命令，一起发送给安全模块106。这里，可以通过串口向外部提供发送安全命令的接口，所述安全命令即加解密命令的格式可以由命令头、校验位组成，其中，命令头包含数据开始字节CLA、加解密类型P1或P2组成、CLA及P1、P2具体含义如表1所示，但不限于这种格式。
Figure PCTCN2017082004-appb-000001
表1处理器105根据安全命令中的类型确定当前为加密还是解密，所述安全命令例如“P1‘00’”为加密。所述预先设置的加解密信息类型为导航信息等，可以预先设置对何种类型的信息进行安全设置。
所述安全模块106包括：安全设置单元1061、安全处理单元1062；
其中，安全设置单元1061，用于设置加密解密方式，这里，可以通过串口对设置加密解密方式，设置所依据的格式，如表1所示，例如“INS‘0xb0’”；为SM4函数，即采用SM4算法进行加解密；
安全处理单元1062，用于接收处理器105发送的需安全设置信息，根据所述需安全设置信息中的加解密命令，如“P1‘00’”，以及所读取的安全设置单元1071中的安全方式，即加密或解密方式，例如SM4算法对待处理信息进行加密或解密。
进一步的，存储器104，用于存储加密解密所需的密钥，具体的，可以通过串口根据表1所述的格式进行设置；例如为“CLA‘CF’LEN‘01’KEY‘1’Check‘2’”。
安全处理单元1062，用于读取存储器104中的密钥，根据密钥对待处理信息进行加密或解密的处理。这里根据各种算法，通过密钥对待处理信息进行加密或解密的过程为现有技术可以实现的过程，本发明方案中就不再赘述。
处理器105，进一步用于将接收到的经过安全模块106加密或解密的信息，根据如表2所述的通信协议格式进行封装。具体为：“CLA‘BF’INS‘xx’P1/P2‘xx’LEN‘xx’data xx Check‘xx’”。其中，代码后面数值的含义参照表2所示。
Figure PCTCN2017082004-appb-000002
表2
本发明还提供了一种集成数据安全功能的卫星导航芯片的应用方法，具体过程如图2所示：
步骤201、导航芯片接收信息，确定信息需要加密或解密，然后执行步骤202；所述信息包括定位信息、数据等；所述确定信息需要加密或解密包括：导航芯片接收外部发送的安全命令中的数值类型，根据数值类型判断当前需要加密还是解密，然后根据预设的加解密信息类型，例如定位信息，选取所接收的信息中与所述预设加解密信息类型相符信息，作为待处理信息；若不需要加密，则直接执行步骤204
步骤202、判断是否有预设的加解密方式，若是，执行步骤203；若否，执行步骤204；
步骤203、导航芯片根据预设的加解密方式对待处理信息进行安全处理，即进行加密或解密。具体的，导航芯片读取预设的加解密方式，根据预设的加密或解密方式对待处理信息进行加密或解密处理，然后将该信息依据表2所示的通信格式，进行封装，执行步骤204。
步骤204、将信息发送出去。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (8)

  1. 一种集成数据安全功能的卫星导航芯片，包括射频模块、导航基带模块、电源模块，其特征在于，该卫星导航芯片进一步包括：
    处理器，用于确定信息需要加密或解密，将需安全设置的信息发送给安全模块，并将安全模块返回的信息发送出去；
    安全模块，用于根据设定的安全方式对需安全设置的信息加密或解密。
  2. 根据权利要求1所述的芯片，其特征在于，
    所述处理器，用于根据外部接收的安全命令，判断需加密或解密，根据预设的加解密信息类型，选取需安全设置的信息中的待处理信息；
    所述需安全设置的信息包括：待处理信息、加密解密命令。
  3. 根据权利要求2所述的芯片，其特征在于，所述安全模块进一步包括安全设置单元、安全处理单元；
    安全设置单元，用于设置加密解密方式；
    安全处理单元，用于根据所述接收安全设置信息中的加解密命令，读取安全设置单元中的加密解密方式，对待处理信息进行加密或解密。
  4. 根据权利要求3所述的芯片，其特征在于，该芯片进一步包括：存储器，
    所述存储器，用于存储加密解密所需的密钥；
    安全处理单元，用于读取存储器中的密钥，根据密钥对待处理信息进行加密或解密。
  5. 根据权利要求1至4任一所述的芯片，所述处理器，进一步用于将安全模块返回的信息根据通信格式进行封装，然后发送出去。
  6. 一种集成数据安全功能的卫星导航芯片的应用方法，其特征在于，该方法包括：
    导航芯片接收信息，确定信息需加密或解密；
    确定有预设的加解密方式，导航芯片根据预设的加解密方式对待处理信息进行加解密；
    将加密或解密后的信息发送出去。
  7. 根据权利要求5所述的方法，其特征在于，所述确定信息需要加密或解密包括：导航芯片接收外部发送的安全命令中的数值类型，根据数值类型判断当前需加密还是解密，然后根据预设的加解密信息类型选取待处理信息。
  8. 根据权利要求6或7所述的方法，其特征在于，所述将加密或解密后的信息发送出去包括：根据通信格式对信息进行封装，然后发送。
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