电子说
一 什么是 MD5?
MD5(Message-Digest Algorithm 5)是一种常用的哈希函数,通常用于数据加密和安全校验等场合。MD5 算法可以将任意长度的消息输入计算出一个固定长度的摘要,其生成的摘要具有唯一性和不可逆性,因此在一些场景下可以用来验证数据的完整性和真实性。本篇文章将详细介绍 MD5 算法的概念、原理、应用以及安全性问题。
MD5 是 Ronald Rivest 在1991年设计出来的一种哈希函数,其输入可以是任意长度的消息,输出则固定为128位。MD5 的全称是“Message-Digest Algorithm 5”,是 MD2 和 MD4 的改进版本。与前者相比,MD5 可以处理更大的消息,并且经过增加辅助函数和处理流程,其安全性也得到了进一步提高。
MD5 算法的核心思想是将任意长度的消息输入到一个压缩函数中,该函数通过一系列变换将消息转换成固定长度(128位)的消息摘要。由于函数中使用了大量的非线性变换操作,因此即使输入的消息相差只有一位,其输出的摘要也会发生很大的变化,这使得 MD5 算法在密码学、数字签名等领域中被广泛应用。
二 MD5的工作原理
附加填充:首先,MD5算法会对输入数据进行填充,使其长度达到512位的倍数(即64字节的倍数)。填充的方式是在原始数据后添加一个1,然后添加足够多的0,直到满足长度要求。
初始化缓冲区:MD5算法使用四个32位整数(A, B, C, D)作为缓冲区,这四个整数被称为链接变量(Chaining Variables)。这些变量在开始处理数据之前被初始化为特定的值。
处理数据块:算法将数据划分为512位(64字节)的块,并逐一处理这些块。对于每个数据块,算法执行四轮操作(每轮64次迭代),每轮操作都会更新链接变量的值。
生成摘要:当所有数据块都被处理后,算法将链接变量的值作为最终的消息摘要输出。这个摘要是一个128位的值,通常以32个十六进制数的形式表示。
三 MD5编码的特点
确定性:对于相同的输入数据,MD5算法总是生成相同的输出摘要。
雪崩效应:MD5算法对输入数据的微小变化非常敏感,即使只有一个比特位的改变,也会导致输出摘要的显著变化。
单向性:MD5算法是单向的,即无法从摘要中恢复出原始数据。
计算效率:MD5算法在计算上相对高效,可以在短时间内处理大量数据。
四 MD5应用场景
1、校验文件的完整性
如果张三给李四传了一个文件,如何确认这个文件传给李四是完整的呢
张三传文件前,先对文件做一个MD5加密,同时把MD5加密的密文传给李四
李四收到文件,也对该文件做MD5加密,如果得到的密文和张三给的密文一样,就说明文件是完整的。
2、存储用户密码
用户密码,理论上也不能直接明文存储在数据库中,因为一旦数据库被破解,用户的密码就全部丢失了
所以可以将用户密码做一个MD5加密,然后将密文存在数据库中
用户登录的时候,可以将用户的密码进行MD5加密,然后比对密文和数据库中的密文是否一致,来判断用户前台填的密码是否正确。
这只是一个思路,一般不会这么简单,一般生产环境会对用户密码加盐加密等等的处理,用户信息更加重要的,则需要更加复杂的计算逻辑。
五 MD5的原理
MD5以512位分组来处理输入的信息,且每一分组又被划分为16个32位子分组,经过一些列的处理后,算法输出由四个32位分组组成的128位散列值。具体的步骤如下所示:
1、填充
如果输入信息的长度(bit)对512求余的结果不等于448,就需要填充使得对512求余结果等于448。填充的方法是填充一个1和n个0。填充完成后,信息的长度为N*512+448
2、记录信息长度
用64位内存来存储填充前信息长度。这64位加在第一步结果的后面,这样信息长度就变为N*512 + 448 + 64 = (N+1)*512
3、装入标准的幻数(四个整数)
标准的幻数(物理顺序)是(A=(01234567)16,B=(89ABCDEF)16,C=(FEDCBA98)16,D=(76543210)16)。如果在程序中定义应该是(A=0X67452301L,B=0XEFCDAB89L,C=0X98BADCFEL,D=0X10325476L)。有点晕哈,其实想一想就明白了。
首先清楚整型的位表示方法,其次标准文档上要求的是:四个幻数在内存地址上从低到高为:
A: 01 23 45 67
B: 89 ab cd ef
C: fe dc ba 98
D: 76 54 32 10
采用小端表示法表示为A=0X67452301L,则在地址中就是A=01 23 45 67
4、循环运算
4.1、把消息分以512位为一分组进行处理
4.2、每一个分组进行4轮变换,以上面所说4个标准的幻数为起始变量进行计算,重新输出4个变量
4.3、以这4个变量再进行下一分组的运算,如果已经是最后一个分组,则这4个变量为最后的结果,即MD5值。
由上面的介绍,我们知道需要对(N+1)组数据进行处理,所以要循环N+1次,每次的循环执行下面的步骤:
将每一512字节细分成16个小组,每个小组32位(4个字节)
认识一下四个线性函数
F(X,Y,Z)=(X&Y)|((~X)&Z)
G(X,Y,Z)=(X&Z)|(Y&(~Z))
H(X,Y,Z)=XYZ
I(X,Y,Z)=Y^(X|(~Z))
设置Mj表示消息的第j个子分组(从0到15), <<< s 表示循环左移s位,则四种操作为:
FF(a,b,c,d,Mj,s,ti)表示a=b+((a+F(b,c,d)+Mj+ti)<<
GG(a,b,c,d,Mj,s,ti)表示a=b+((a+G(b,c,d)+Mj+ti)<<
HH(a,b,c,d,Mj,s,ti)表示a=b+((a+H(b,c,d)+Mj+ti)<<
II(a,b,c,d,Mj,s,ti)表示a=b+((a+I(b,c,d)+Mj+ti)<<
四轮运算
第一轮
a=FF(a,b,c,d,M0,7,0xd76aa478)
b=FF(d,a,b,c,M1,12,0xe8c7b756)
c=FF(c,d,a,b,M2,17,0x242070db)
d=FF(b,c,d,a,M3,22,0xc1bdceee)
a=FF(a,b,c,d,M4,7,0xf57c0faf)
b=FF(d,a,b,c,M5,12,0x4787c62a)
c=FF(c,d,a,b,M6,17,0xa8304613)
d=FF(b,c,d,a,M7,22,0xfd469501)
a=FF(a,b,c,d,M8,7,0x698098d8)
b=FF(d,a,b,c,M9,12,0x8b44f7af)
c=FF(c,d,a,b,M10,17,0xffff5bb1)
d=FF(b,c,d,a,M11,22,0x895cd7be)
a=FF(a,b,c,d,M12,7,0x6b901122)
b=FF(d,a,b,c,M13,12,0xfd987193)
c=FF(c,d,a,b,M14,17,0xa679438e)
d=FF(b,c,d,a,M15,22,0x49b40821)
第二轮
a=GG(a,b,c,d,M1,5,0xf61e2562)
b=GG(d,a,b,c,M6,9,0xc040b340)
c=GG(c,d,a,b,M11,14,0x265e5a51)
d=GG(b,c,d,a,M0,20,0xe9b6c7aa)
a=GG(a,b,c,d,M5,5,0xd62f105d)
b=GG(d,a,b,c,M10,9,0x02441453)
c=GG(c,d,a,b,M15,14,0xd8a1e681)
d=GG(b,c,d,a,M4,20,0xe7d3fbc8)
a=GG(a,b,c,d,M9,5,0x21e1cde6)
b=GG(d,a,b,c,M14,9,0xc33707d6)
c=GG(c,d,a,b,M3,14,0xf4d50d87)
d=GG(b,c,d,a,M8,20,0x455a14ed)
a=GG(a,b,c,d,M13,5,0xa9e3e905)
b=GG(d,a,b,c,M2,9,0xfcefa3f8)
c=GG(c,d,a,b,M7,14,0x676f02d9)
d=GG(b,c,d,a,M12,20,0x8d2a4c8a)
第三轮
a=HH(a,b,c,d,M5,4,0xfffa3942)
b=HH(d,a,b,c,M8,11,0x8771f681)
c=HH(c,d,a,b,M11,16,0x6d9d6122)
d=HH(b,c,d,a,M14,23,0xfde5380c)
a=HH(a,b,c,d,M1,4,0xa4beea44)
b=HH(d,a,b,c,M4,11,0x4bdecfa9)
c=HH(c,d,a,b,M7,16,0xf6bb4b60)
d=HH(b,c,d,a,M10,23,0xbebfbc70)
a=HH(a,b,c,d,M13,4,0x289b7ec6)
b=HH(d,a,b,c,M0,11,0xeaa127fa)
c=HH(c,d,a,b,M3,16,0xd4ef3085)
d=HH(b,c,d,a,M6,23,0x04881d05)
a=HH(a,b,c,d,M9,4,0xd9d4d039)
b=HH(d,a,b,c,M12,11,0xe6db99e5)
c=HH(c,d,a,b,M15,16,0x1fa27cf8)
d=HH(b,c,d,a,M2,23,0xc4ac5665)
第四轮
a=II(a,b,c,d,M0,6,0xf4292244)
b=II(d,a,b,c,M7,10,0x432aff97)
c=II(c,d,a,b,M14,15,0xab9423a7)
d=II(b,c,d,a,M5,21,0xfc93a039)
a=II(a,b,c,d,M12,6,0x655b59c3)
b=II(d,a,b,c,M3,10,0x8f0ccc92)
c=II(c,d,a,b,M10,15,0xffeff47d)
d=II(b,c,d,a,M1,21,0x85845dd1)
a=II(a,b,c,d,M8,6,0x6fa87e4f)
b=II(d,a,b,c,M15,10,0xfe2ce6e0)
c=II(c,d,a,b,M6,15,0xa3014314)
d=II(b,c,d,a,M13,21,0x4e0811a1)
a=II(a,b,c,d,M4,6,0xf7537e82)
b=II(d,a,b,c,M11,10,0xbd3af235)
c=II(c,d,a,b,M2,15,0x2ad7d2bb)
d=II(b,c,d,a,M9,21,0xeb86d391)
每轮循环后,将A、B、C、D分别加上a,b,c,d,然后进入下一循环
六 AT指令组件相关软件的使用
1 Gitee链接地址
组件位于amaziot_bloom_os_sdklibrariesamxtuam_at.c
Gitee源码地址:https://gitee.com/ning./hongdou
Github源码地址:https://github.com/ayumid/hongdou
2 应用层组件功能介绍
提供MD5的计算方法。
3 代码讲解
1 mbedtls_md5
计算MD5,并将结果传入形参中
ret = mbedtls_md5( sample_md5_test_buf[i], sample_md5_test_buflen[i], md5sum );
2 mbedtls_md5_finish
最终计算MD5。
ret = mbedtls_md5_finish( &ctx, output )
3 mbedtls_md5_update
更新MD5buf数据
ret = mbedtls_md5_update( &ctx, input, ilen )
4 mbedtls_md5_starts
设置MD5计算context
ret = mbedtls_md5_starts( &ctx )
4 Demo实战
4.1 创建一个Demo
复制8.6_random示例工程,到同一个文件夹下,修改文件名为9.1_md5,如图:
4.2 修改makefile
4.3 增加头文件
使用代码编辑器,将新建的工程文件加入代码编辑器中,打开main.c,修改main.c,加入头文件,如图:
4.4 修改代码
在Phase2Inits_exit 调用文件组件提供的对外API,如图:
4.5 编译
在SDK根目录打开命令行,输入命令.build.bat -l .amaziot_bloom_os_sdksamplelibraries9.1_md5
λ .build.bat -l .amaziot_bloom_os_sdksamplelibraries9.1_md5 子目录或文件 outbin 已经存在。 子目录或文件 buildmbedTLS 已经存在。 子目录或文件 buildobj 已经存在。 gnumake: Entering directory `F:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRF/amaziot_bloom_os_sdk/sample/libraries/9.1_md5' armcc.exe -c --cpu Cortex-R4 --no_unaligned_access -g -O2 --apcs /inter --diag_suppress 2084,1,2,177,188,223,550,1296,2795,6319,9931,9933 --diag_error=warning --gnu --thumb --loose_implicit_cast -DDATA_COLLECTOR_IMPL -DISPT_OVER_SSP -DDIAG_SSP_DOUBLE_BUFFER_USE_DYNAMIC_ALLOCATION -DENV_XSCALE -DL1_DCXO_ENABLED -DLTE_HIGH_MOBILITY_OPTIMIZATION -DRUN_XIP_MODE -DCRANE_Z2 -DCA_LONG_IPC_MSG -DNEZHA3 -DNEZHA3_1826 -DUPGRADE_PLMS -DUPGRADE_PLMS_SR -DLTE_GSMMULTIBCCH -DGPLC_LTE_RSSI_SCAN -DL1V_NEW_RSSI -DUPGRADE_PLMS_3G -DUPGRADE_PLMS_L1 -DUPGRADE_FG_PLMS -DFG_PLMS_URR -DUPGRADE_L1A_FG_PLMS -DUPGRADE_PLMS_STAGE_2 -DUPGRADE_MBCCH -DMULTI_BCCH_READY_IND -DURR_MRAT_ICS_SEARCH -DUPGRADE_ICS -DMRAT_NAS -DUPGRADE_PLMS_SEARCH_API -DICS_MBCCH -DICS_MBCCH_2G_RSSI -DDIAG_NEWPP -DPHS_SW_DEMO -DPHS_SW_DEMO_TTC -DPHS_SW_DEMO_TTC_PM -DFULL_SYSTEM -D_DDR_INIT_ -D_TAVOR_HARBELL_ -DUPGRADE_ARBEL_PLATFORM -D_TAVOR_B0_SILICON_ -DTDL1C_SPY_ENABLE -DDLM_TAVOR -DTAVOR -DFLAVOR_DUALCORE -DDEBUG_D2_MOR_REG_RESEREVED_ENABLE -D_DIAG_USE_COMMSTACK_ -D_TAVOR_DIAG_ -DPM_DEBUG_MODE_ENABLED -DPM_D2FULL_MODE -DPM_EXT_DBG_INT_ARR -DFEATURE_WB_AMR_PS -DMACRO_FOR_LWG -DHL_LWG -DOPTIMIZE_FOR_2G_BCCH -DPLAT_TEST -D_FDI_USE_OSA_ -DPLAT_USE_THREADX -DLWIP_IPNETBUF_SUPPORT -DCRANE_MCU_DONGLE -DAT_OVER_UART -DPHS_SW_DEMO_TTC_PM -DUPGRADE_LTE_ONLY -DEXT_AT_MODEM_SUPPORT -DLTEONLY_THIN_SINGLE_SIM -DLFS_FILE_SYS -DLFS_FILE_SYS_V2 -DPSM_ENABLE -DNO_PAHO_MQTT -DNO_XML -DNO_LWM2M -DREMOVE_MBEDTLS -DNO_AT_NET -DCRANE_SD_NOT_SUPPORT -DNTP -DYMODEM_EEH_DUMP -DENABLE_DM_LTEONLY -DLTEONLY_THIN -DNO_EXTEND_MY_Q_AT -DNOT_SUPPORT_HTTPS -DNOT_SUPPORT_PM813 -DCRANEL_4MRAM -DREMOVE_PB -DUART_NEW_VERSION -DREMOVE_MEP -DREMOVE_SMS -DREMOVE_ENVSIM -DAPN_INCODE -DLTEONLY_THIN_SINGLE_SIM_2MFLASH -DASR160X_OPENCPU_FEATURE -DENABLE_UART3_FEATRUE -DENABLE_UART4_FEATRUE -DYUGE_MBEDTLS_3_2_1 -DENABLE_MAC_TX_DATA_LOGGING -DDISABLE_NVRAM_ACCESS -DINTEL_UPGRADE_EE_HANDLER_SUPPORT -DLTE_W_PS -DL1_DUAL_MODE -DUPGRADE_HERMON_DUAL -DINTEL_UPGRADE_DUAL_RAT -DINTEL_UPGRADE_GPRS_CIPHER_FLUSH -DUPGRADE_ENHANCED_QUAD_BAND -DINTEL_2CHIP_PLAT -DI_2CHIP_PLAT -DUPGRDE_TAVOR_COMMUNICATION -DRUN_WIRELESS_MODEM -DFLAVOR_DDR12MB_GB1MB5 -DFEATURE_SHMEM -DACIPC_ENABLE_NEW_CALLBACK_MECHANISM -DRELIABLE_DATA -DMAP_NSS -DTV_FNAME=""SW_PLATFORM=PMD2NONE PHS_SW_DEMO PHS_SW_DEMO_PM SRCNUCLEUS FULL_SYSTEM NOACRTC PDFLT PLAT_TEST PV2 DIAGOSHMEM NVM WITHL1V"" -DTV_FDESC=""SW_DESCRIPTION="" -DENABLE_ACIPC -D_DATAOMSL_ENABLED_ -DUSB_CABLE_DETECTION_VIA_PMIC -DMIPS_TEST -DMIPS_TEST_RAM -DFLAVOR_DIET_RAM -DNVM_INCLUDE -DMSL_INCLUDE -DMSL_POOL_MEM -DNO_AUDIO -DOSA_QUEUE_NAMES -D_DIAG_DISABLE_USB_ -DOSA_NUCLEUS -DOSA_USED -DPM_D2NONE_MODE -DCRANE_SOC_TEMPERATURE_SENSOR -DL1_SW_UPDATE_FOR_DIGRF -DPHS_L1_SW_UPDATE_R7 -DUPGRADE_LTE -DFRBD_CALIB_NVM -DFRBD_AGC_CALIB -DFRBD_FDT_CALIB -DHSPA_MPR -DCAPT_PARAMS_OPTIMIZE -DL1_WB_R99_ONLY -DL1V_WB_R99_ONLY -DINTERGRATED_RF_SUPPORT -DL1_RX_DIV_SUPPORT -DENABLE_OOS_HANDLING -DTAVOR_D2_WB_L1_SUPPORT -DL1_DDR_HIGH_FREQ -DUPGRADE_DIGRF3G_SUPPORT -DW_PS_PLUS_G_PAGING -D"NO_APLP=0" -DINTEL_UPGRADE_UNIFIED_VOICE_TASK -DINTEL_UPGRADE_R99 -DAPLP_SPY_ENABLE -D__TARGET_FEATURE_DOUBLEWORD -DWHOLE_UMTS_STACK -DUSE_TTPCOM_CSR_BLUETOOTH_AUDIO_GAIN_CONTROL -DL1_UPGRADE_R5 -DUPGRADE_EDGE -DUPGRADE_R4_FS1 -DINTEL_UPGRADE_GSM_CRL_IF -DUPGRADE_EGPRS_M -DINTEL_UPGRADE_EGPRS_M -DINTEL_UPGRADE_RF_PARAMS_IN_CF_TDS -DINTEL_UPGRADE_2SAMPLES_PER_SYMBOL -D"GPRS_MULTISLOT_CLASS=12" -D"EGPRS_MULTISLOT_CLASS=12" -DMARVELL_UPGRADE_BSIC_REDESIGN -DMSL_INCLUDE -DINTEL_HERMON_SAC -DCRANE_CUST_BUILD -DL1_SW_UPDATE_FOR_DIGRF -DFLAVOR_COM -DSILICON_PV2 -DSILICON_SEAGULL -DSILICON_TTC_CORE_SEAGULL -DPCAC_INCLUDE -Otime -DBUILD_DATE=""09 04 2024"" -DBUILD_TIME=""15:07:27"" -Iatcmdsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptelephonyyugeinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalUARTinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalcoreinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalPMUinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalGPIOinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xosposixinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xdiagdiag_logicsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xcswSysCfginc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xcswplatforminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xenvwin32inc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xcswBSPinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xcswplatformdev_platbuild -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xososainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xosthreadxinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xosnu_xscaleinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacpsminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcachttpclientsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xdiagdiag_logicinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptimerinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopintcinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xcswPMinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoppminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilTickManagerinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopBSPinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptelephonyatcmdsrvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptelephonyatparserinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptelephonysdkinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcachttpclientinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacciinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcaclwipv4v6srcinclude -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcaclwipv4v6srcincludearch -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcaclwipv4v6srcincludeipv4 -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcaclwipv4v6srcincludeipv6 -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcaclwipv4v6srcincludelwip -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcaclwipv4v6srcincludenetif -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopmmi_matinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xtavorArbelinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xtavorenvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptelephonymodeminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacdusterinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacfotainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalI2Cinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalACIPCinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilfatsysflash -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilFDIsrcINCLUDE -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalMMUinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilFDIsrcFDI_ADD -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilFDIsrcFM_INC -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilfatsysfshdr -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutillittlefsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacttsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacdialinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilcsw_memoryinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoputilitiesinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopcommpminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilnvminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilEEhandlerinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilEEhandlersrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopRTCinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhoptelephonyci_clientinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalBT_deviceinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalUARTinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopmrdinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopdmainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilsoftutilinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhalSPIinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacwebsocketinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacatnet_srvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xsoftutilfotacomminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xaud_swAudioinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xaud_swACM_COMMinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xaud_swaudio_stubsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhopaaminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xaud_swAudioHALinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xhaldbgshellinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFincludeasr160xpcacopencpuinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFamaziot_bloom_os_sdkutils -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1asros -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1 -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1inc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1include -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1includembedtls -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1incmbedtls -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFCSDK_CODEmbedTLSmbedTLS_3_2_1testsincludetest -DSDK_ENABLE_MBEDTLS -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRF/amaziot_bloom_os_sdk/sample/libraries/9.1_md5aminc -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRF/amaziot_bloom_os_sdk/sample/libraries/9.1_md5atcmdsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFamaziot_bloom_os_sdkutils -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFamaziot_bloom_os_sdklibraries -o buildobj/ext_at_cmds.o F:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRF/amaziot_bloom_os_sdk/sample/libraries/9.1_md5/atcmds/src/ext_at_cmds.c armlink.exe buildobj/main.o buildobj/ext_at_cmds.o buildobj/ext_at_controller.o buildCSDK_CODE.lib -o F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFoutbinArbel_PMD2NONE_40M.axf --via F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFprebuilt_1606lArbel_PMD2NONE_targ_objliblist.txt --elf --scatter F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFprebuilt_1606lCrane_DS_4M_Ram_2M_Flash_XIP_CIPSRAM_Common_SingleSIM.sct --predefine="-DLTEONLY_THIN_SINGLE_SIM" --map --symbols --info sizes,totals --list F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFoutbinArbel_PMD2NONE_40M.map --keep init.o(Header) --keep init.o(Vectors) --diag_suppress 6312,6314,6319,6329 --feedback F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFoutfeedbackLinkOptLteonlyThin_SingleSim_NoSMS.txt F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRFtoolsbuildimage_1606l.bat SDK_PROD_TYPE : [DM] SDK_CUST_SKU : [THIN_SINGLE_SIM_NO_SMS] SDK_PS_MODE : [LTEONLY] SDK_CHIP_VER : [Z2A0] SDK_OS_TYPE : [TX] Platform Convertion Tools v4.01 with PS option extension Convertion done! |INPUT |outbincp_1606L.bin |MARK |NAME |EXEADDR .LOADADDR.LENGTH .CPZLADDR|COMPRESS STASTIC | |--------|--------|--------.--------.--------.--------|------------------------------| |This Is LteOnly 4M| |RW_CPZ_1|DDR_RW_ |7e119000.800650b0.0000cdd4.80066000|0000cdd4- >00003000 |This Is LteOnly 4M| |RW_CPZ_2|PS_NCAH |7e388000.80071e84.00001300.80069000|00001300- >00001000 |This Is LteOnly 4M| |RW_CPZ_3|ITCM |7e3dac00.80073184.0000f51c.8006a000|0000f51c- >0000a000 |This Is LteOnly 4M| |RW_CPZ_4|CODE_PS |7e1aa000.800826a0.0002fe38.80074000|0002fe38- >0001e000 |This Is LteOnly 4M| |RW_CPZ_5|CODEPSB |7e1dc000.800b24d8.000339c0.80092000|000339c0- >0001b000 |This Is LteOnly 4M| |RW_CPZ_6|CODEPSC |7e213000.800e5e98.000323ec.800ad000|000323ec- >0001b000 |This Is LteOnly 4M| |RW_CPZ_7|CODEPSD |7e249000.80118284.00028d88.800c8000|00028d88- >0001a000 |This Is LteOnly 4M| |RW_CPZ_8|CODEPSE |7e277000.8014100c.0002e310.800e2000|0002e310- >0001a000 |This Is LteOnly 4M| |RW_CPZ_9|CODEPSF |7e2a9000.8016f31c.0001c948.800fc000|0001c948- >00011000 |This Is LteOnly 4M| |RW_CPZ_A|CODE_PL |7e2ca000.8018bc64.0002fa44.8010d000|0002fa44- >0001e000 |This Is LteOnly 4M| |RW_CPZ_B|CODEPLB |7e2fa000.801bb6a8.00039058.8012b000|00039058- >00022000 |This Is LteOnly 4M| |RW_CPZ_C|CODEPLC |7e337000.801f4700.000268d4.8014d000|000268d4- >00011000 |--------|--------|--------.--------.--------.--------|------------------------------| | | 0x00203fd4 - > 0x00147000| | | 2.016(MB) - > 1.277(MB)| |------------------------------------------------------------------------------------| cp_1606L.axf cp_1606L.bin cp_1606L.map gnumake: Leaving directory `F:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A09_WIHT_NEWRF/amaziot_bloom_os_sdk/sample/libraries/9.1_md5' "copy NEZHAC_CP_CNR_MIFI_TX.bin to ./ " 已复制 1 个文件。
4.6 生成固件
参考入门中开发工具,生成工具。
4.7 查看现象
固件下载到模组后,发送AT指令。AT串口信息如下:
点击下载 MD5 Demo 固件(见Wiki:Cellular IoT Wiki 知识库)
5 总结
根据实验现象,可以实现MD5哈希值的计算,
本文章源自奇迹物联开源的物联网应用知识库Cellular IoT Wiki,更多技术干货欢迎关注收藏Wiki:Cellular IoT Wiki 知识库(https://rckrv97mzx.feishu.cn/wiki/wikcnBvAC9WOkEYG5CLqGwm6PHf)
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在我们长期投身于蜂窝物联网 ODM/OEM 解决方案的实践过程中,一直被物联网技术碎片化与产业资源碎片化的问题所困扰。从产品定义、芯片选型,到软硬件研发和测试,物联网技术的碎片化以及产业资源的碎片化,始终对团队的产品开发交付质量和效率形成制约。为了减少因物联网碎片化而带来的重复开发工作,我们着手对物联网开发中高频应用的技术知识进行沉淀管理,并基于 Bloom OS 搭建了不同平台的 RTOS 应用生态。后来我们发现,很多物联网产品开发团队都面临着相似的困扰,于是,我们决定向全体物联网行业开发者开放奇迹物联内部沉淀的应用技术知识库 Wiki,期望能为更多物联网产品开发者减轻一些重复造轮子的负担。
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