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クレジットカードの通信プロトコル ISO8583 と戦う
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Hiroaki Sano
August 31, 2019
Programming
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クレジットカードの通信プロトコル ISO8583 と戦う
builderscon2019
Hiroaki Sano
August 31, 2019
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Transcript
ؙٖآحزؕ٦سך鸐⥋فٗز؝ٕ *40ה䨌ֲ CVJMEFSTDPO "VH ,BONV *OD )JSPBLJ4BOP
!2 ⡟ꅿ酔畍 #BDLFOE&OHJOFFSBU,BONV *OD !IJSPBLJT 荈䊹稱➜ IJSPBLJT !MB@MVOB@B[VM
!3 غٝسٕؕ٦سאֻגתׅ
!4 ؙٖآحزؕ٦س噟歲ךؒ؝ءأذي *40ך➬圫 *40ך1BSTF 㣐㢌הֿ תה ،آؑٝت
ؙٖآحزؕ٦س噟歲ך ؒ؝ءأذي
ؙٖآحزؕ٦س噟歲ךؒ؝ءأذي "DRVJSFS ،ؙٙ؎،ٓ *TTVFS ؎ءُ، !6 #SBOE ـٓٝس ˖
#SBOE 7JTB .BTUFS$BSE +$# ꋒ耠 "NFY ˖ فٓحزؿؓ٦يך䲿⣘ծ《䒷ٕ٦ٕך鋉㹀 ˖ "DRVJSFS ˖ ؕ٦س⸇湅䏄ך䬪遤ֲ ˖ *TTVFS ˖ ؕ٦س⠓㆞ ِ٦ؠ ך䬪遤ֲ ؕ٦س⠓㆞㤍秈 ؕ٦س⠓㆞ 䏄莧 ⸇湅䏄㤍秈 ،ٓ؎،ٝأ ،ٓ؎،ٝأ ぐ涫㜥➂暟ךꟼ⤘ ؕ٦سךⵃ欽㉀ㅷך「ֽ床׃
ؙٖآحزؕ٦س噟歲ךؒ؝ءأذي "DRVJSFS ،ؙٙ؎،ٓ *TTVFS ؎ءُ، !7 #SBOE ـٓٝس
ⵃ欽 ؕ٦س涪遤 ؕ٦س⠓㆞ 䏄莧 ⟎㡰♳ ⟎㡰♳ ⟎㡰♳ 锜実 㹋㡰♳ 㹋㡰♳ 㹋㡰♳ ؙٖآحزؕ٦س寸幥כؿؑ٦ؤ ⟎㡰♳ؔ٦أئ٦ءّٝ ♷⥋٥ؔ٦أ 㹋㡰♳ؙٔ،ؚٔٝ 㡰♳然㹀 ر٦ةֶꆃך崧
*40 ؙٖآحزؕ٦س噟歲ךؒ؝ءأذي "DRVJSFS ،ؙٙ؎،ٓ *TTVFS ؎ءُ، !8 #SBOE ـٓٝس
˖ أؾ٦ؕ٦ך䨽㾩ׅؕٝيכ؎ءُ،ח㾩ׅ ˖ ؔ٦أئ٦ءָّٝ*40ك٦أח׃فٗز؝ٕ ˖ 䎃剢⟃כ寸幥➿遤؟٦ؽأⵃ欽׃גְָ✲噟 䭁㣐ח⠵ג⟎㡰♳ה㹋㡰♳ךءأذيⰻ醡⻉׃ ⵃ欽 ؕ٦س涪遤 ؕ٦س⠓㆞ 䏄莧 锜実 *40 *40 ⟎㡰♳ ⟎㡰♳ ⟎㡰♳ 㹋㡰♳ 㹋㡰♳ 㹋㡰♳
*40ך➬圫
*40ך➬圫 !10 ˖ *40ծ⚅歲垥彊 ˖ IUUQTXXXJTPPSHPCQVJJTPTUEJTPFEWFO ˖ 鸐⥋כ5$1ד遤 ˖
傀ח1BSTFSֲָָ֮ծזְ ˖ ぐ爡杝荈ך䭁䓸⸇ִגְ&ODPEJOHָ殯ז׃גְ ˖ 劤涪邌ךⰻ㺁稢鿇ָ殯ז〳腉䚍֮ ˖ 1BSTFSכNPSJZPTIJׁח䩛⠗גְְ *40
*40ך➬圫 !11 YGF CGGGG GGGGGGGGFDEEDDGGDDEDDD DDEFEEDDEFDEDEEDED DDFFEDED FF
FGGGGG *40ךر٦ةך⼧Ⱈ鹌邌鎸
*40ך➬圫 !12 YGF CGGGG GGGGGGGGFDEEDDGGDDEDDD DDEFEEDDEFDEDEEDED DDFFEDED FF
FGGGGG *40ךر٦ةך⼧Ⱈ鹌邌鎸
*40ך➬圫 !13 YGF CGGGG GGGGGGGGFDEEDDGGDDEDDD DDEFEEDDEFDEDEEDED DDFFEDED FF
FGGGGG *40ךر٦ةך⼧Ⱈ鹌邌鎸 1"/ 剣⸬劍ꣲ 䎃剢 ؔٝٓ؎ٝ寸幥 ꆃ겘 ˟1"/1SJNBSZ"DDPVOU/VNCFSծؕ٦س殢〾ךֿה
!14 㣐תַז圓鸡כ.FTTBHF5ZQF #JUNBQ %BUB&MFNFOUךא 㛇劤圓鸡 *40ך➬圫 ˖ .FTTBHF5ZQFY ˖
#JUNBQYGF ˖ %BUB&MFNFOUYGGG
!15 .5 #JUNBQ %BUB #JUNBQ %BUBխ -FOHUI %BUB %BUB %BUB
%BUB %BUB %BUB 㛇劤圓鸡 ˖ .FTTBHF5ZQFכ䗳׆א㶷㖈ׅ ˖ #JUNBQכ䖓竲ך%BUB&MFNFOUך⳿植ػة٦ٝ邌植׃גְ ˖ %BUB&MFNFOUכ⳿植ׅ㜥䨽ח״גر٦ةⰻ㺁 1"/ 剣⸬劍 ꣲ ֶ״ן圓鸡 〳㢌ꞿծ㔿㹀ꞿծⰅ㶨 ָ✮寸תגְ %BUB -FOHUI %BUBխ *40ך➬圫
!16 .FTTBHF5ZQF ˖ )551ך⚅歲דְֲأذ٦ةأ؝٦سך״ֲזך ˖ Y⽃秪ח鹌侧ח㢌䳔ׅה ˖ ֿֿדכ#JUػحؙ鹌侧 1BDLFE#$% ה׃ג鍑ꅸ
˖ את ˖ ぐ呞ח䠐ָ֮ *40ך➬圫 *40ךغ٦آّٝ 湡涸կכؔ٦أծכؔ٦أך《嶊FUD 堣腉կכؙٔؒأزծכٖأهٝأFUD 涪⥋⯋կכ،ؙٙ؎،ٓծכ؎ءُ،FUD
!17 ؔ٦أ *TTVFS ؔ٦أח㼎ׅٖأهٝأ "DRVJSFS #SBOE ؔ٦أ *TTVFS ؔ٦أח㼎ׅٖأهٝأ "DRVJSFS
#SBOE 《嶊 《嶊ח㼎ׅٖأهٝأ 飑Ⰵ 飑Ⰵ 《嶊 飑Ⰵ 《嶊 *40ך➬圫 剣⸬劍ꣲثؑح ؙFUD 剣⸬劍ꣲثؑح ؙFUD 㼎䘔ׅؔ٦أ ךثؑحؙFUD .FTTBHF5ZQF
!18 GF #JUNBQ ⳿植ׅ%BUB&MFNFOU邌植ׅ#JU։ך#JUNBQ G ˟ 殢湡ך%BUB&MFNFOUָ㶷㖈
殢湡ך%BUB&MFNFOUָ㶷㖈 殢湡ך%BUB&MFNFOUָ㶷㖈 䠐ׅ ˟.4#JUכ如ח竲ֻ#JUNBQ ך㶷㖈䠐ׅ #JU #JU *40ך➬圫
!19 %BUB&MFNFOU ˖ 1"/ ꆃ겘 ؕ٦س剣⸬劍ꣲFUD寸幥ד䗳銲זر٦ةך劤⡤ ˖ 鶢ך#JUNBQד#JUָ甧ךָך갫殢דⰅגְ ˖ #JUך㜥䨽ח״גוזر٦ةָⰅַכ寸תגְ
˖ #JU1"/ ˖ #JU1SPDFTTJOH$PEF ˖ #JU"NPVOU 5SBOTBDUJPO ˖ #JU"NPVOU 4FUUMFNFOU ˖ #JU"NPVOU $BSEIPMEFS#JMMJOH ˖ #JU5SBOTNJTTJPO%BUFBOE5JNF ˖ #JU ָ甧גְ㜥さכ如ך״ֲזر٦ةחז *40ך➬圫 .5 #JUNBQ 1"/ 1$խ "./5 %BUF5JNF
!20 %BUB&MFNFOUךؿؓ٦وحز ˖ ر٦ةךⰻ㺁ח״גؿؓ٦وحزָ寸תגְ ˖ ꞿׁ〳㢌ꞿPS㔿㹀ꞿ ˖ 俑㶵珏ⴽ侧㶵ծ薉㶵ծ暴婊俑㶵ծתכֿך穈さׇ ˖ 邌植倯岀#$%
&#$%*$זו #JU ر٦ة ꞿׁ 俑㶵珏ⴽ 邌植 1"/ 〳㢌ꞿ 侧㶵 #$% ؕ٦س剣⸬ 劍ꣲ 㔿㹀ꞿ 侧㶵 #$% ⵃ欽䏄莧 ⡝䨽㕂 㔿㹀ꞿ 薉侧㶵暴婊俑㶵 &#$%*$ *40ך➬圫
*40ך1BSTF
*40ך1BSTF !22 NTH<>CZUF\ .FTTBHF5ZQF Y Y #JUNBQ YG
Y Y Y Y YF Y Y Y Y Y Y Y Y Y Y %BUB&MFNFOU Y Y Y Y Y Y Y Y Y Y Y Y^ غ؎ز⯓鶢ך➬圫ח䖞ג⯓걧ַⳢ椚ׅ ˟⟃꣬؟ٝفٕ؝٦س (P鎉铂 ָ竲ֹתָׅأل٦أךꟼ⤘♳ծ ؒٓ٦عٝسؚٔٝזוכ満ֹתׅ
*40ך1BSTF !23 .FTTBHF5ZQFכ#ZUF NFTTBHF5ZQFNTH<> Y Y NUSFBE"T#$% NFTTBHF5ZQF .FTTBHF5ZQF
.FTTBHF5ZQFכ#ZUF⽃秪ח铣ל״ְ
*40ך1BSTF !24 WBSCJUNBQ<>VJOU CJUNBQ<> NTHCJOBSZ#JH&OEJBO6JOU NTH<> NTH<> 锷椚琎ד.4#JUך㶷㖈然钠遤ֲ JG
YCJUNBQ<> \ CJUNBQ<> NTHCJOBSZ#JH&OEJBO6JOU NTH<> NTH<> ^ JG YCJUNBQ<> \ CJUNBQ<> NTHCJOBSZ#JH&OEJBO6JOU NTH<> NTH<> ^ #JUNBQ ˖ #JU #ZUF ׆א铣 ˖ .4# Y ָ㶷㖈ׅ㜥さכ ׁח#ZUFךCJUNBQָ竲ֻהזׅ
*40ך1BSTF !25 #JU1BSTF1"/JGCJUQSFTFOU 〳㢌ꞿծ#$%ծ⯓걧ח؟؎ؤ 呞侧 ָⰅגְػة٦ٝ JG YCJUNBQ<> \
MFOHUIJOU NTH<> 䗳銲זꞿֽׁ铣ד1"/《䖤 婍SFTU0G.THד《䖤 QBO SFTU0G.THSFBE"T#$% MFOHUI NTH<> ^ %BUB&MFNFOU ˖ ֿֿד锷椚琎崞欽 ˖ #JUNBQה#JUך⡘縧ך"/%怴皾ד㶷㖈ثؑحؙ׃ג1BSTF ˖ ♴鎸ך⢽כ#JU湡 Y ָ㶷㖈ַׅ锃ץגְ
*40ך1BSTF !26 #JU1BSTF1SPDFTTJOH$PEFJGCJUQSFTFOU 㔿㹀ꞿծ#$%ծ呞ךػة٦ٝ JG YCJUNBQ<> \ QD SFTU0G.THSFBE"T#$%
NTH ^ %BUB&MFNFOU ずׄ銲걄דמׅ㶷㖈ثؑحؙה1BSTF鹌גְֻ
*40ך1BSTF !27 #JU剣⸬劍ꣲ 㔿㹀ꞿծ#$%ծ呞 ::..ַUJNFTUBNQפך㢌䳔ָ䗳銲זػة٦ٝ JG YCJUNBQ<> \ ZZNN
SFTU0G.THSFBE"T#$% NTH FYQJSFT"UZZNN5P5JNFTUBNQ ZZNN ^ %BUB&MFNFOU 㛇劤כ㔿㹀ꞿPS〳㢌ꞿծ侧㶵 薉侧㶵PS薉侧㶵鎸〾דָ֮ծ 1BSTF鹌גְֻ麓玎ד圫ղזػة٦ٝח湫ׅ
*40ך1BSTF !28 #JU⸇湅䏄せ⡝䨽㕂 㔿㹀ꞿծ薉侧㶵鎸〾ծչغ؎زպךػة٦ٝ JG YCJUNBQ<> \ NFSDIBOU SFTU0G.THSFBE"MQIB/VNFSJD4ZNCPM/
NTH ^ %BUB&MFNFOU 㛇劤כ㔿㹀ꞿPS〳㢌ꞿծ侧㶵 薉侧㶵PS薉侧㶵鎸〾דָ֮ծ 1BSTF鹌גְֻ麓玎ד圫ղזػة٦ٝח湫ׅ
*40ך1BSTF !29 〳㢌ꞿծ薉侧㶵鎸〾ծ⯓걧חغ؎ز侧 ׁחꞿׁח״ג䠐ָ㢌ػة٦ٝ JG YCJUNBQ<> \ MNTH<> WBMVF
SFTU0G.THSFBE"MQIB/VNFSJD4ZNCPM/ M NTH<> TXJUDIMFO WBMVF \ DBTF DBTF ^ %BUB&MFNFOU
*40ך1BSTF !30 %BUB&MFNFOUך⚥חׁח#JUNBQָⰅגְػة٦ٝ JG YCJUNBQ<> \ TVCCJUNBQ TVCNTHNTH<> NTH<>
JG YTVCCJUNBQ \ ^ YYYYזػة٦ٝ JG YCJUNBQ<> \ ^ ZZZZZזػة٦ٝ JG YCJUNBQ<> \ %BUB&MFNFOU
㣐㢌הֿ
㣐㢌הֿ !32 䔲ⴱծוךر٦ةָꅾ銲ַ״ַֻזַ ˖ #JU1SPDFTTJOH$PEF ˖ #JU4ZTUFNT5SBDF"VEJU/VNCFS ˖ ꆃ겘ָⰅגְ%BUB&MFNFOUָֻׁ֮
˖ سًُؗٝزמׅ铣 ˖ ְ䨽דؕ٦س⢪ֲⰻ醡⻉⟃ךءأذيךؚٗ鋅ג וזر٦ةָ굲דַֻ岞荍ֻ锃叨 ˖ &$؟؎زծ؝ٝؽصծمذٕծ㕂ⰻ嵲㢩 ˖ 䏄莧ך噟䡾װ寸幥䩛媮ח״ג굲דֻر٦ةָ殯ז
㣐㢌הֿ !33 JG YCJUNBQ<> \ WBMVF SFTU0G.THSFBE#ZUFT/ 5IF-FOHUI0G5IJT%BUB NTH
EPOPUIJOH ^ %BUB&MFNFOUָהחַֻ㢳ְ ˖ ل٦آ鸐ծ噟ٗآحؙד䗳銲זך锃叨 ˖ 穠卓ծ噟ٗآحؙד♶銲זךכ铣굲לׅ倯ꆙה׃ ˖ %BUB&MFNFOUך؟؎ؤכ傀濼ד֮ ˖ ؟؎ؤⴓ铣ָ⡦׃זְ
!34 ꅾ銲ׄׯזְה䙼ג㹋כꅾ銲 ˖ 㕂ⰻⵃ欽儗ך⳿植ׅ〳腉䚍ָ֮%BUB&MFNFOUָ֮ ˖ ⼱錬ؕةؕشזו傈劤㔿剣ךر٦ةָⰅגְ ˖ ♶銲ךד铣굲ל׃גְ ˖
׃ַ׃㹋כٔن䩪ְ䠐ׅ'MBHⰅגְ ˖ ♧鿇ךֶ㹏圫ךٔن䩪ְ鏩〳׃ג׃תגְ ˖ ˟植儗挿דך䒦爡ך醡ㅷٓ؎ٝشحفדכٔن䩪ְכ♶鏩〳 ˖ سًُؗٝزך鋅衅ה׃荈ⴓָٔن䩪ְ׃זְַ㶷㖈 䘌גְ 㣐㢌הֿ
!35 噟歲ך鸐⢽ ˖ #JU"QQSPWBM$PEFכ呞ך薉侧㶵 ˖ 㼎ぢ鑐꿀ךꥷחչ薉㶵ָ幉ׄגְתׅ״պה䭷䶯ְֻ ˖ ؿؓ٦وحزדכ鏩〳ׁגְָ侧㶵ך⢪ֲךָ䢪统 ˖
鸐⢽ח䖞ג侧㶵ךה׃ 㣐㢌הֿ
!36 ֶתֽ #JU "QQSPWBM$PEF
תה
תה !38 תה ˖ فٗز؝ٕ余殛ׅךכ嚂׃ְ ˖ 噟濼陎㣐✲կ⹈䓼㹋꿀ׅל䨌ִկ ˖ 噟歲ך䢪统װ农럀濼ָ֮