開源物聯(lián)網(wǎng)技術(shù)--哈希算法MD5加密功能技術(shù)分享

一 什么是 MD5？

MD5（Message-Digest Algorithm 5）是一種常用的哈希函數(shù)，通常用于數(shù)據(jù)加密和安全校驗(yàn)等場合。MD5 算法可以將任意長度的消息輸入計(jì)算出一個(gè)固定長度的摘要，其生成的摘要具有唯一性和不可逆性，因此在一些場景下可以用來驗(yàn)證數(shù)據(jù)的完整性和真實(shí)性。本篇文章將詳細(xì)介紹 MD5 算法的概念、原理、應(yīng)用以及安全性問題。

MD5 是 Ronald Rivest 在1991年設(shè)計(jì)出來的一種哈希函數(shù)，其輸入可以是任意長度的消息，輸出則固定為128位。MD5 的全稱是“Message-Digest Algorithm 5”，是 MD2 和 MD4 的改進(jìn)版本。與前者相比，MD5 可以處理更大的消息，并且經(jīng)過增加輔助函數(shù)和處理流程，其安全性也得到了進(jìn)一步提高。

MD5 算法的核心思想是將任意長度的消息輸入到一個(gè)壓縮函數(shù)中，該函數(shù)通過一系列變換將消息轉(zhuǎn)換成固定長度（128位）的消息摘要。由于函數(shù)中使用了大量的非線性變換操作，因此即使輸入的消息相差只有一位，其輸出的摘要也會(huì)發(fā)生很大的變化，這使得 MD5 算法在密碼學(xué)、數(shù)字簽名等領(lǐng)域中被廣泛應(yīng)用。

二 MD5的工作原理

附加填充：首先，MD5算法會(huì)對(duì)輸入數(shù)據(jù)進(jìn)行填充，使其長度達(dá)到512位的倍數(shù)（即64字節(jié)的倍數(shù)）。填充的方式是在原始數(shù)據(jù)后添加一個(gè)1，然后添加足夠多的0，直到滿足長度要求。

初始化緩沖區(qū)：MD5算法使用四個(gè)32位整數(shù)（A, B, C, D）作為緩沖區(qū)，這四個(gè)整數(shù)被稱為鏈接變量（Chaining Variables）。這些變量在開始處理數(shù)據(jù)之前被初始化為特定的值。

處理數(shù)據(jù)塊：算法將數(shù)據(jù)劃分為512位（64字節(jié)）的塊，并逐一處理這些塊。對(duì)于每個(gè)數(shù)據(jù)塊，算法執(zhí)行四輪操作（每輪64次迭代），每輪操作都會(huì)更新鏈接變量的值。

生成摘要：當(dāng)所有數(shù)據(jù)塊都被處理后，算法將鏈接變量的值作為最終的消息摘要輸出。這個(gè)摘要是一個(gè)128位的值，通常以32個(gè)十六進(jìn)制數(shù)的形式表示。

三 MD5編碼的特點(diǎn)

確定性：對(duì)于相同的輸入數(shù)據(jù)，MD5算法總是生成相同的輸出摘要。

雪崩效應(yīng)：MD5算法對(duì)輸入數(shù)據(jù)的微小變化非常敏感，即使只有一個(gè)比特位的改變，也會(huì)導(dǎo)致輸出摘要的顯著變化。

單向性：MD5算法是單向的，即無法從摘要中恢復(fù)出原始數(shù)據(jù)。

計(jì)算效率：MD5算法在計(jì)算上相對(duì)高效，可以在短時(shí)間內(nèi)處理大量數(shù)據(jù)。

四 MD5應(yīng)用場景

1、校驗(yàn)文件的完整性

如果張三給李四傳了一個(gè)文件，如何確認(rèn)這個(gè)文件傳給李四是完整的呢

張三傳文件前，先對(duì)文件做一個(gè)MD5加密，同時(shí)把MD5加密的密文傳給李四

李四收到文件，也對(duì)該文件做MD5加密，如果得到的密文和張三給的密文一樣，就說明文件是完整的。

2、存儲(chǔ)用戶密碼

用戶密碼，理論上也不能直接明文存儲(chǔ)在數(shù)據(jù)庫中，因?yàn)橐坏?shù)據(jù)庫被破解，用戶的密碼就全部丟失了

所以可以將用戶密碼做一個(gè)MD5加密，然后將密文存在數(shù)據(jù)庫中

用戶登錄的時(shí)候，可以將用戶的密碼進(jìn)行MD5加密，然后比對(duì)密文和數(shù)據(jù)庫中的密文是否一致，來判斷用戶前臺(tái)填的密碼是否正確。

這只是一個(gè)思路，一般不會(huì)這么簡單，一般生產(chǎn)環(huán)境會(huì)對(duì)用戶密碼加鹽加密等等的處理，用戶信息更加重要的，則需要更加復(fù)雜的計(jì)算邏輯。

五 MD5的原理

MD5以512位分組來處理輸入的信息，且每一分組又被劃分為16個(gè)32位子分組，經(jīng)過一些列的處理后，算法輸出由四個(gè)32位分組組成的128位散列值。具體的步驟如下所示：

1、填充

如果輸入信息的長度(bit)對(duì)512求余的結(jié)果不等于448，就需要填充使得對(duì)512求余結(jié)果等于448。填充的方法是填充一個(gè)1和n個(gè)0。填充完成后，信息的長度為N*512+448

2、記錄信息長度

用64位內(nèi)存來存儲(chǔ)填充前信息長度。這64位加在第一步結(jié)果的后面，這樣信息長度就變?yōu)镹*512 + 448 + 64 = (N+1)*512

3、裝入標(biāo)準(zhǔn)的幻數(shù)（四個(gè)整數(shù)）

標(biāo)準(zhǔn)的幻數(shù)（物理順序）是（A=(01234567)16，B=(89ABCDEF)16，C=(FEDCBA98)16，D=(76543210)16）。如果在程序中定義應(yīng)該是（A=0X67452301L，B=0XEFCDAB89L，C=0X98BADCFEL，D=0X10325476L）。有點(diǎn)暈哈，其實(shí)想一想就明白了。

首先清楚整型的位表示方法，其次標(biāo)準(zhǔn)文檔上要求的是：四個(gè)幻數(shù)在內(nèi)存地址上從低到高為：

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為A=0X67452301L，則在地址中就是A=01 23 45 67

4、循環(huán)運(yùn)算

4.1、把消息分以512位為一分組進(jìn)行處理

4.2、每一個(gè)分組進(jìn)行4輪變換，以上面所說4個(gè)標(biāo)準(zhǔn)的幻數(shù)為起始變量進(jìn)行計(jì)算，重新輸出4個(gè)變量

4.3、以這4個(gè)變量再進(jìn)行下一分組的運(yùn)算，如果已經(jīng)是最后一個(gè)分組，則這4個(gè)變量為最后的結(jié)果，即MD5值。

由上面的介紹，我們知道需要對(duì)(N+1)組數(shù)據(jù)進(jìn)行處理，所以要循環(huán)N+1次，每次的循環(huán)執(zhí)行下面的步驟：

將每一512字節(jié)細(xì)分成16個(gè)小組，每個(gè)小組32位（4個(gè)字節(jié)）

認(rèn)識(shí)一下四個(gè)線性函數(shù)

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))

設(shè)置Mj表示消息的第j個(gè)子分組（從0到15）， <<< s 表示循環(huán)左移s位，則四種操作為：

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)<<

四輪運(yùn)算

第一輪

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)

第二輪

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)

第三輪

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)

第四輪

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)

每輪循環(huán)后，將A、B、C、D分別加上a,b,c,d，然后進(jìn)入下一循環(huán)

六 AT指令組件相關(guān)軟件的使用

1 Gitee鏈接地址

組件位于amaziot_bloom_os_sdklibrariesamxtuam_at.c

Gitee源碼地址：https://gitee.com/ning./hongdou

Github源碼地址：https://github.com/ayumid/hongdou

2 應(yīng)用層組件功能介紹

提供MD5的計(jì)算方法。

3 代碼講解

1 mbedtls_md5

計(jì)算MD5，并將結(jié)果傳入形參中

ret = mbedtls_md5( sample_md5_test_buf[i], sample_md5_test_buflen[i], md5sum );

2 mbedtls_md5_finish

最終計(jì)算MD5。

ret = mbedtls_md5_finish( &ctx, output ) 

3 mbedtls_md5_update

更新MD5buf數(shù)據(jù)

ret = mbedtls_md5_update( &ctx, input, ilen )

4 mbedtls_md5_starts

設(shè)置MD5計(jì)算context

ret = mbedtls_md5_starts( &ctx )

4 Demo實(shí)戰(zhàn)

4.1 創(chuàng)建一個(gè)Demo

復(fù)制8.6_random示例工程，到同一個(gè)文件夾下，修改文件名為9.1_md5，如圖：

4.2 修改makefile

4.3 增加頭文件

使用代碼編輯器，將新建的工程文件加入代碼編輯器中，打開main.c，修改main.c，加入頭文件，如圖：

4.4 修改代碼

在Phase2Inits_exit 調(diào)用文件組件提供的對(duì)外API，如圖：

4.5 編譯

在SDK根目錄打開命令行，輸入命令.build.bat -l .amaziot_bloom_os_sdksamplelibraries9.1_md5

λ .build.bat -l .amaziot_bloom_os_sdksamplelibraries9.1_md5
子目錄或文件 outbin 已經(jīng)存在。
子目錄或文件 buildmbedTLS 已經(jīng)存在。
子目錄或文件 buildobj 已經(jīng)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 ./ "

已復(fù)制         1 個(gè)文件。

4.6 生成固件

參考入門中開發(fā)工具，生成工具。

4.7 查看現(xiàn)象

固件下載到模組后，發(fā)送AT指令。AT串口信息如下：

點(diǎn)擊下載 MD5 Demo 固件（見Wiki：Cellular IoT Wiki 知識(shí)庫）

5 總結(jié)

根據(jù)實(shí)驗(yàn)現(xiàn)象，可以實(shí)現(xiàn)MD5哈希值的計(jì)算，

本文章源自奇跡物聯(lián)開源的物聯(lián)網(wǎng)應(yīng)用知識(shí)庫Cellular IoT Wiki，更多技術(shù)干貨歡迎關(guān)注收藏Wiki：Cellular IoT Wiki 知識(shí)庫（https://rckrv97mzx.feishu.cn/wiki/wikcnBvAC9WOkEYG5CLqGwm6PHf）

歡迎同學(xué)們走進(jìn)AmazIOT知識(shí)庫的世界！

這里是為物聯(lián)網(wǎng)人構(gòu)建的技術(shù)應(yīng)用百科，以便幫助你更快更簡單的開發(fā)物聯(lián)網(wǎng)產(chǎn)品。

Cellular IoT Wiki初心：

在我們長期投身于蜂窩物聯(lián)網(wǎng) ODM/OEM 解決方案的實(shí)踐過程中，一直被物聯(lián)網(wǎng)技術(shù)碎片化與產(chǎn)業(yè)資源碎片化的問題所困擾。從產(chǎn)品定義、芯片選型，到軟硬件研發(fā)和測試，物聯(lián)網(wǎng)技術(shù)的碎片化以及產(chǎn)業(yè)資源的碎片化，始終對(duì)團(tuán)隊(duì)的產(chǎn)品開發(fā)交付質(zhì)量和效率形成制約。為了減少因物聯(lián)網(wǎng)碎片化而帶來的重復(fù)開發(fā)工作，我們著手對(duì)物聯(lián)網(wǎng)開發(fā)中高頻應(yīng)用的技術(shù)知識(shí)進(jìn)行沉淀管理，并基于 Bloom OS 搭建了不同平臺(tái)的 RTOS 應(yīng)用生態(tài)。后來我們發(fā)現(xiàn)，很多物聯(lián)網(wǎng)產(chǎn)品開發(fā)團(tuán)隊(duì)都面臨著相似的困擾，于是，我們決定向全體物聯(lián)網(wǎng)行業(yè)開發(fā)者開放奇跡物聯(lián)內(nèi)部沉淀的應(yīng)用技術(shù)知識(shí)庫 Wiki，期望能為更多物聯(lián)網(wǎng)產(chǎn)品開發(fā)者減輕一些重復(fù)造輪子的負(fù)擔(dān)。

Cellular IoT Wiki沉淀的技術(shù)內(nèi)容方向如下：

奇跡物聯(lián)的業(yè)務(wù)服務(wù)范圍：基于自研的NB-IoT、Cat1、Cat4等物聯(lián)網(wǎng)模組，為客戶物聯(lián)網(wǎng)ODM/OEM解決方案服務(wù)。我們的研發(fā)技術(shù)中心在石家莊，PCBA生產(chǎn)基地分布在深圳、石家莊、北京三個(gè)工廠，滿足不同區(qū)域&不同量產(chǎn)規(guī)模&不同產(chǎn)品開發(fā)階段的生產(chǎn)制造任務(wù)。跟傳統(tǒng)PCBA工廠最大的區(qū)別是我們只服務(wù)物聯(lián)網(wǎng)行業(yè)客戶。

連接我們，和10000+物聯(lián)網(wǎng)開發(fā)者一起 降低技術(shù)和成本門檻

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這里是奇跡物聯(lián)的物聯(lián)網(wǎng)應(yīng)用技術(shù)開源wiki主陣地，歡迎關(guān)注公眾號(hào)，不迷路～

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