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SIMLock锁卡功能解析

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SIMLock锁卡功能解析SIMLock 锁卡功能解析 a 的博客 CSDN 博客一 锁卡背景介绍 锁卡即 SIMLock 当手机开机启动或者插入 SIM 卡时 手机 modem 侧预置在 NV 项中的配置信息会与 SIM 卡中的信息做比对 检测

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SIMLock锁卡功能解析

SIMLock锁卡功能解析 – 桀骜不驯24 – 博客园

一、锁卡背景介绍

　　锁卡即SIMLock,当手机开机启动或者插入SIM卡时，手机modem侧预置在NV项中的配置信息会与SIM卡中的信息做比对，检测是否匹配。若匹配，则SIM卡可以正常使用。若不匹配，则SIM卡相关功能均无法正常使用，例如拨打电话、发送短信及上网等；或者是只能注册2G网，不能注册4G。

　　锁卡的目的：一些运营商会要求控制某一类卡的使用，从而保护自己的利益（运营商定制机）

　　SIMLock锁和图案锁，数字密码锁，PIN码锁，PUK锁一样，是Keyguard模块中的一种锁。

二、锁卡的需求

　　锁卡的需求方式有7种之多，常见的有NP锁，NS锁，CP锁，SP锁等

　　从安卓机器来看，目前最常用的是SP锁（MCC/MNC），本文将解析SP锁的加锁流程

三、锁卡流程解析

　　1.首先modem侧检测SIM卡的配置信息并与之作比对，若匹配则继续加载SIM卡，若不匹配，则上报加锁信息

　　2.RIL层检测到modem上报的加锁信息，然后发送给framework层，最终在AP层监测到事件：

　　3.AP层显示出锁卡界面，要求用户输入解锁码进行解锁

四、相关流程图

1.加锁流程图

SIMLock锁卡功能解析

2.解锁流程图

SIMLock锁卡功能解析

五、代码解析

　　MTK平台已经支持SIMLock功能，但只能在代码中写固定的MCC/MNC，不能灵活配置。即一套代码只能对应一套对应的锁卡配置信息，对于手机厂商来说，显然不满足需求，发货国家遍布全球，锁卡配置信息均不同，代码版本太多无法管理，故肯定要废弃MTK的这套SIMLock功能。

（1）modem侧客制化

　　涉及的代码文件：



    

  1. custom/modem/common/ps/custom_nvram_extra.c 
    2. 

  2. custom/modem/common/ps/customer_at_command.c 
    3. 

  3. custom/service/nvram/custom_nvram_sec.c 
    4. 

  4. custom/service/nvram/custom_nvram_sec.h 
    5. 

  5. interface/service/nvram/nvram_data_items.h 
    6. 

  6. service/nvram/src/nvram_factory_config.c 
    7. 

  7. service/nvram/src/nvram_main.c 
    8. 



a.扩展锁卡配置信息的组数


　　custom_nvram_sec.h




    

  • const nvram_sml_context_struct NVRAM_EF_SML_DEFAULT =  
    • 

  • { SML_MAGIC_HEAD_VALUE,  
    • 

  • {
    
   {SML_STATE_UNLOCK,SML_RETRY_COUNT_N_CAT,0,0}, /* Category N */     
    • 

  • {SML_STATE_UNLOCK,SML_RETRY_COUNT_NS_CAT ,0,0}, /* Category NS */ 
    • 

  • {SML_STATE_UNLOCK,SML_RETRY_COUNT_SP_CAT ,0,0}, /* Category SP */ 
    • 

  • {SML_STATE_UNLOCK,SML_RETRY_COUNT_C_CAT ,0,0}, /* Category C */ 
    • 

  • {SML_STATE_UNLOCK,SML_RETRY_COUNT_SIM_CAT ,0,0}, /* Category SIM */ 
    • 

  • {SML_STATE_UNLOCK,SML_RETRY_COUNT_NS_CAT ,0,0}, /* Link NS-SP */ 
    • 

  • {SML_STATE_UNLOCK,SML_RETRY_COUNT_C_CAT ,0,0}}, /* Link SIM-C */ 
    • 

  • {
    
   {SML_KEY_SET,{0x21,0x43,0x65,0x87,0xFF,0xFF,0xFF,0xFF}},     
    • 

  • {SML_KEY_SET,{0x65,0x87,0x21,0x43,0xFF,0xFF,0xFF,0xFF}}, 
    • 

  • {SML_KEY_SET,{0x11,0x22,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}}, 
    • 

  • {SML_KEY_EMPTY,{0x33,0x44,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}}, 
    • 

  • {SML_KEY_EMPTY,{0x55,0x66,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}}, 
    • 

  • {SML_KEY_SET,{0x77,0x88,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}}, 
    • 

  • {SML_KEY_SET,{0x99,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}}}, 
    • 

  • /* Category N code */ 
    • 

  • {0x73,0x00,0x1F,0x73,0x00,0x2F,0x73,0x00,0x3F,0x73,0x00,0x4F,0x73,0x00,0x5F, 
    • 

  • 0x73,0x00,0x6F,0x73,0x00,0x7F,0x73,0x00,0x8F,0x73,0x00,0x9F,0x73,0x01,0x0F, 
    • 

  • 0x73,0x01,0x1F,0x73,0x09,0x9F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00}, 
    • 

  • /* Category NS code */ 
    • 

  • {0xc2,0xc2,0xc2,0xc2,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00}, 
    • 

  • /* Category SP code */ 
    • 

  • {0xc3,0xc3,0xc3,0xc3,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00}, 
    • 

  • /* Category C code */ 
    • 

  • {0xc4,0xc4,0xc4,0xc4,0xc4,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00}, 
    • 

  • /* Category SIM code */ 
    • 

  • {0xc5,0xc5,0xc5,0xc5,0xc5,0xc5,0xc5,0xc5,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 
    • 

  • /* Link Category NS-SP */ 
    • 

  • {0xc6,0xc6,0xc6,0xc6,0xc6,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00},  
    • 

  • /* Link Category SIM-C */ 
    • 

  • {0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 
    • 

  • 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 
    • 

  • {0xFF,0xFF}, 
    • 

  • SML_MAGIC_TAIL_VALUE  
    • 

  • }; 
    • 


                                                        
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