OAuth 2.0 をかみくだく

0"VUIΛטΈࡅ͘ 8&#ΤϯδχΞษڧձ

8&#ΤϯδχΞษڧձ 8IPBN* w കᖒ༤Ұ࿠ ͏Ί͟ΘΏ͏͍ͪΖ͏ w ͕Δ͕΂ !HBSCBHFUPXO
w גࣜձࣾ%54 w 4*FS w ೥݄ೖࣾ w ೥݄ҟಈ w डୗ։ൃˠݚڀ։ൃɾٕज़ࢧԉ w ՝֎׆ಈ w 1MBZ'SBNFXPSLؔ࿈ͰدߘɺొஃͳͲ w ͨ·ʹυϥϜΛୟ͘

8&#ΤϯδχΞษڧձ 8IPBN* ++6($$$ 4QSJOH ొஃ͠·ͨ͠ʂ

8&#ΤϯδχΞษڧձ "HFOEB w ೝূͱೝՄ w എܠ w 0"VUI w ΫϥΠΞϯτΫϨσϯγϟϧ
w ϦιʔεΦʔφʔύεϫʔυΫϨσϯγϟϧ w ΠϯϓϦγοτ w ೝՄίʔυ w 0"VUIೝূͱ0QFO*%$POOFDU ͪΐͬͱ͚ͩ

8&#ΤϯδχΞษڧձ %JTDMBJNFS w ຊࢿྉ͸ҎԼΛ໨తͱͯ͠࡞੒ͨ͠΋ͷͰ͢ w 0"VUI͕ඞཁͱ͞Ε͍ͯΔഎܠΛ೺Ѳ͢Δ w 0"VUI ಛʹೝՄίʔυϑϩʔ ͕ෳࡶʹͳΒ͟ΔΛɹ
ಘͳ͍ࣄ৘Λ೺Ѳ͢Δ w ຊࢿྉͰ͸ҎԼͷৄࡉʹ͸৮Ε·ͤΜɻผ్ɺຊࢿྉ෇࿥ʹɹ ܝࡌͨ͠ࢀߟࢿྉΛࢀর͍ͯͩ͘͠͞ w 0"VUIͰ΍ΓऔΓ͞ΕΔ۩ମతͳύϥϝʔλ΍஋ w 0"VUIͰߟྀ͢΂͖ηΩϡϦςΟࣄ߲ͱରࡦ

8&#ΤϯδχΞษڧձ ೝূͱೝՄ

8&#ΤϯδχΞษڧձ ೝূͱೝՄ w ೝূ w "VUIFOUJDBUJPO "VUI/ w ୭Ͱ͋Δ͔
w ӡస໔ڐূɺύεϙʔτͳͲ ˠ *%1BTTXPSE w ೝՄ w "VUIPSJ[BUJPO "VUI; w Կ͕Ͱ͖Δ͔ w 伴ɺ੾ූͳͲ ˠ "DDFTT5PLFO λΠͷ஍ԼమͰ͸੾ූΛ τʔΫϯͱݺͿ

8&#ΤϯδχΞษڧձ എܠ

8&#ΤϯδχΞษڧձ αʔϏε૿Ճʹ൐͏ೝূͷ՝୊ αʔϏε" JEHBSCBHFUPXO QBTTBBBBBBBB

8&#ΤϯδχΞษڧձ αʔϏε૿Ճʹ൐͏ೝূͷ՝୊ αʔϏε" JEHBSCBHFUPXO QBTTBBBBBBBB αʔϏε# JEHBSCBHFUPX QBTTCCCCCCCC จࣈ਺ͷ੍ݶ

8&#ΤϯδχΞษڧձ αʔϏε૿Ճʹ൐͏ೝূͷ՝୊ αʔϏε" JEHBSCBHFUPXO QBTTBBBBBBBB αʔϏε# JEHBSCBHFUPX QBTTCCCCCCCC αʔϏε$
JEHBSCBHFUPXO QBTTDDDDDDDD ΞΧ΢ϯτ૪ୣ จࣈ਺ͷ੍ݶ

JEHBSCBHFUPXO QBTTDDDDDDDD ΞΧ΢ϯτ૪ୣ จࣈ਺ͷ੍ݶ αʔϏε& αʔϏε% JEHBSCBHFUPXO QBTTEEEEEEEE JEHBSCBHFUPXO QBTTEEEEEEEE ύεϫʔυ ࢖͍ճ͠

JEHBSCBHFUPXO QBTTDDDDDDDD ΞΧ΢ϯτ૪ୣ จࣈ਺ͷ੍ݶ αʔϏε& αʔϏε% JEHBSCBHFUPXO QBTTEEEEEEEE JEHBSCBHFUPXO QBTTEEEEEEEE ύεϫʔυ ࢖͍ճ͠ αʔϏε' JEHBSCBHFUPXO QBTTG''' จࣈछͷڧ੍

8&#ΤϯδχΞษڧձ αʔϏε࿈ܞʹ൐͏ೝՄͷ՝୊ αʔϏε" αʔϏε# αʔϏε$ αʔϏε& αʔϏε% αʔϏε'

8&#ΤϯδχΞษڧձ αʔϏε࿈ܞʹ൐͏ೝՄͷ՝୊ αʔϏε" αʔϏε# αʔϏε$ αʔϏε& αʔϏε% αʔϏε' αʔϏε#͕'ʹ
σʔλΛॻ͖ࠐΈ

σʔλΛॻ͖ࠐΈ αʔϏε$͕#ͷ σʔλΛಡΈࠐΈ

σʔλΛॻ͖ࠐΈ αʔϏε$͕#ͷ σʔλΛಡΈࠐΈ αʔϏε&͕"ͱ%ͷ σʔλΛϚογϡΞοϓ

σʔλΛॻ͖ࠐΈ αʔϏε$͕#ͷ σʔλΛಡΈࠐΈ αʔϏε&͕"ͱ%ͷ σʔλΛϚογϡΞοϓ αʔϏε#͕'ʹ ϩάΠϯ͢Δʁ αʔϏε$͸#ʹ ॻ͖ࠐΊΔʁ αʔϏε&ͷ ύεϫʔυΛ ม͑ͨΒʁ αʔϏε"ͷ ը໘ΛಡΉʁ

8&#ΤϯδχΞษڧձ ͦΕͧΕͷ՝୊ͱղܾࡦ w ೝূʹؔ͢Δ՝୊ͷղܾ ˔ 0QFO*% 㱠0QFO*%$POOFDU w Ұ࣌੝Γ্͕Δ΋ਓؾ͸ԼՐʹ
w ೝՄʹؔ͢Δ՝୊ͷղܾ ˔ 0"VUI w 0"VUIͰҰؾʹීٴ w ೝূʹؔ͢Δ՝୊΋ ൒͹ڧҾʹ ղܾ

8&#ΤϯδχΞษڧձ OAuth 2.0

8&#ΤϯδχΞษڧձ 0"VUIˠ w 0"VUI w ೥݄࠷ऴ૲Ҋ w ೥݄B w ೥݄3'$
w 0"VUI w ೥݄࠷ऴ૲Ҋ w ೥݄3'$ 0"VUI͸ഇࢭ

8&#ΤϯδχΞษڧձ 3'$

8&#ΤϯδχΞษڧձ 0"VUI͸೉͍͠ w ༻ޠ͕෼͔ΓͮΒ͍ w 0QFO*%ͳͲͰ࢖ΘΕΔ༻ޠͱͷࠩҟ w ੈؒҰൠͰ࢖ΘΕΔ༻ޠͱͷࠩҟ w ࢓༷ͰఆΊΒΕ͍ͯͳ͍ॲཧ͕ଟ͍
w ΫϥΠΞϯτΛొ࿥͢Δํ๏ w ϦιʔεΦʔφʔΛೝূ͢Δํ๏ w ΞΫηετʔΫϯͷ಺༰ͱݕূํ๏ w ॲཧϑϩʔ͕ෳࡶ w )551ϦμΠϨΫτͷ࿈ଓ 0"VUI%BODF w ηΩϡϦςΟߟྀࣄ߲͕ଟ͍

8&#ΤϯδχΞษڧձ ਎ۙͳྫͰཧղ͢Δ w ྫ ษڧձαʔϏεΛϚΠΫϩϒϩάαʔϏεͱ࿈ܞ͢Δ ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε
[1] ࿈ܞ։࢝ [2] ϑΥϩϫʔ৘ใऔಘ [3] ϑΥϩϫʔ৘ใ [4] ϑΥϩϫʔ৘ใදࣔ [5] ษڧձࢀՃ [6] ࢀՃ৘ใ౤ߘ [7] ࢀՃ׬ྃը໘දࣔ

8&#ΤϯδχΞษڧձ 3PMFT w 0"VUIͷొ৔ਓ෺ ໾ׂ આ໌ ྫ ϦιʔεΦʔφʔ อޢ͞ΕͨϦιʔεͷ࣋ͪओ
ΤϯυϢʔβʔ Ϧιʔεαʔόʔ อޢ͞ΕͨϦιʔεΛఏڙ͢Δ αʔόʔ ϚΠΫϩϒϩά αʔϏε ΫϥΠΞϯτ อޢ͞ΕͨϦιʔεΛར༻͢Δ αʔυύʔςΟΞϓϦέʔγϣϯ ษڧձαʔϏε ೝՄαʔόʔ τʔΫϯΛ؅ཧ͢Δαʔόʔ ϚΠΫϩϒϩά αʔϏε

8&#ΤϯδχΞษڧձ 1SPUPDPM'MPX w ೝՄάϥϯτ ޙड़ ʹґΒͳ͍جຊతͳϑϩʔ https://tools.ietf.org/html/rfc6749#section-1.2

8&#ΤϯδχΞษڧձ 1SPUPDPM'MPX ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε [A] ೝՄཁٻ [C]
ೝՄڐՄ [D] ΞΫηετʔΫϯ [E] ΞΫηετʔΫϯ [F] อޢϦιʔε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ [B] ೝՄڐՄ ϚΠΫϩϒϩά αʔϏε ೝՄαʔόʔ

8&#ΤϯδχΞษڧձ "VUIPSJ[BUJPO(SBOU w 3'$Ͱ͸छྨͷೝՄάϥϯτΛఆٛ ೝՄίʔυ ΠϯϓϦγοτ ϦιʔεΦʔφʔύεϫʔυΫϨσϯγϟϧ
ΫϥΠΞϯτΫϨσϯγϟϧ w ֓Ͷ ˠͷॱʹػೳΛຬ͍ͨͯ͠Δ͕ෳࡶ w ಠࣗʹೝՄάϥϯτΛ௥Ճͯ͠΋Α͍ w ಠࣗʹೝՄάϥϯτΛ֦ுͯ͠΋Α͍ ೝՄίʔυ͔Βཧղ͠Α͏ͱ ͢Δͱࢮ͵ ˞ ͷͰɺ࣍ϖʔδ Ҏ߱ɺ͔Βٯॱʹઆ໌ ˞ݸਓͷײ૝Ͱ͢

8&#ΤϯδχΞษڧձ ࣄલ४උ ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε [1-1] ΫϥΠΞϯτొ࿥ [1-2]
ΫϥΠΞϯτIDɺ γʔΫϨοτ [2-1] ϩάΠϯ [2-2] ೝূ݁Ռ ΫϥΠΞϯτొ࿥खॱɺ ϦιʔεΦʔφʔͷ ೝূखॱ͸࢓༷ൣғ֎ ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ ೝՄαʔόʔ

8&#ΤϯδχΞษڧձ $MJFOU$SFEFOUJBMT w ΫϥΠΞϯτ୯ҐͰೝূ͢Δ w ϦιʔεΦʔφʔͷೝՄ͕ඞཁͳ͍"1*Ͱ࢖͏ https://tools.ietf.org/html/rfc6749#section-4.4

8&#ΤϯδχΞษڧձ $MJFOU$SFEFOUJBMT ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε [A] ΫϥΠΞϯτೝূ [B]
ΞΫηετʔΫϯ ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ ೝՄαʔόʔ ΫϥΠΞϯτ*%ͱ γʔΫϨοτͰೝূ ΫϥΠΞϯτ୯Ґʹ ΞΫηετʔΫϯΛ ෷͍ग़͢

8&#ΤϯδχΞษڧձ $MJFOU$SFEFOUJBMT ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ
ೝՄαʔόʔ [1] ࿈ܞ։࢝ [2] ϑΥϩϫʔ৘ใऔಘ [3] ϑΥϩϫʔ৘ใ [4] ϑΥϩϫʔ৘ใ [5] ษڧձࢀՃ [6] ࢀՃ৘ใ౤ߘ ❌ ϢʔβೝՄ͕ෆཁͳૢ࡞ ͸ߦ͑Δ ϢʔβೝՄ͕ඞཁͳૢ࡞ ͸ߦ͑ͳ͍

8&#ΤϯδχΞษڧձ 3FTPVSDF0XOFS1BTTXPSE$SFEFOUJBMT w ΫϥΠΞϯτʹϦιʔεΦʔφʔͷೝূ৘ใΛ౉͢ w ϨΨγʔγεςϜͷҠߦͳͲͰ࢑ఆతʹ࢖͏ https://tools.ietf.org/html/rfc6749#section-4.3

8&#ΤϯδχΞษڧձ 3FTPVSDF0XOFS1BTTXPSE$SFEFOUJBMT ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ
ೝՄαʔόʔ [1] ࿈ܞ։࢝ [2] ೝূ৘ใཁٻ [A] ೝূ৘ใ [B] ϦιʔεΦʔφʔೝূ [C] ΞΫηετʔΫϯ ϚΠΫϩϒϩάαʔϏε ͷ*%ͱύεϫʔυΛೖྗ

8&#ΤϯδχΞษڧձ 3FTPVSDF0XOFS1BTTXPSE$SFEFOUJBMT ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ
ೝՄαʔόʔ [6] ษڧձࢀՃ [7] ࢀՃ৘ใ౤ߘ [8] ࢀՃ׬ྃը໘දࣔ [3] ϑΥϩϫʔ৘ใऔಘ [4] ϑΥϩϫʔ৘ใ [5] ϑΥϩϫʔ৘ใදࣔ ϢʔβೝՄ͕ඞཁͳૢ࡞ ΋ߦ͑Δ

8&#ΤϯδχΞษڧձ 3FTPVSDF0XOFS1BTTXPSE$SFEFOUJBMT ѱҙͷ͋Δ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ
ೝՄαʔόʔ [3] ແஅ౤ߘ [4] ϓϩϑΟʔϧมߋ ΫϥΠΞϯτʹѱҙ͕͋Δ৔߹ɺ ϦιʔεΦʔφʔʹͳΓ͢·ͯ͠ ೚ҙͷૢ࡞Λߦ͑Δ [5] ύεϫʔυมߋ [1] ࿈ܞ։࢝ [2] ೝূ৘ใཁٻ [A] ೝূ৘ใ

8&#ΤϯδχΞษڧձ *NQMJDJU w ΫϥΠΞϯτΞϓϦέʔγϣϯͰ࢖͏ w ΞΫηετʔΫϯ࿙ӮͷϦεΫΛཧղ͔ͯ͠Β࢖͏΂͖ https://tools.ietf.org/html/rfc6749#section-4.2 ※ ࢴ໘ͷ౎߹্ɺϨΠΞ΢τΛҰ෦มߋͯ͠ܝࡌ

8&#ΤϯδχΞษڧձ *NQMJDJU ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ϢʔβΤʔδΣϯτ WEBαʔϏε
Ϧιʔεαʔόʔ ೝՄαʔόʔ ษڧձ εΫϦϓτ ΫϥΠΞϯτ [1] ࿈ܞ։࢝ [A] ೝՄαʔόʔʹϦμΠϨΫτ [B] ೝՄը໘දࣔ ษڧձαʔϏεʹ࣍ͷૢ࡞Λ ڐՄ͠·͔͢ʁ w ϚΠΫϩϒϩάͷಡΈऔΓ w ϚΠΫϩϒϩάͷॻ͖ࠐΈ

Ϧιʔεαʔόʔ ೝՄαʔόʔ ษڧձ εΫϦϓτ ΫϥΠΞϯτ [B] ೝՄ৘ใೖྗ [C] WEBαʔϏεʹϦμΠϨΫτ [D] WEBαʔϏεʹΞΫηε [C] ΞΫηετʔΫϯੜ੒ ΞΫηετʔΫϯΛ ϑϥάϝϯτʹ෇Ճ ΞΫηετʔΫϯΛ ϩʔΧϧʹอଘͯ͠ ϦΫΤετ

Ϧιʔεαʔόʔ ೝՄαʔόʔ ษڧձ εΫϦϓτ ΫϥΠΞϯτ [E] εΫϦϓτΛμ΢ϯϩʔυ [F] ΞΫηετʔΫϯΛநग़ [G] ΞΫηετʔΫϯΛઃఆ ϩʔΧϧʹอଘͨ͠ΞΫηε τʔΫϯΛΫϥΠΞϯτʹɹ ઃఆ

Ϧιʔεαʔόʔ ೝՄαʔόʔ ษڧձ εΫϦϓτ ΫϥΠΞϯτ [2] ϑΥϩϫʔ৘ใऔಘ [3] ϑΥϩϫʔ৘ใ [4] ϑΥϩϫʔ৘ใදࣔ [5] ษڧձࢀՃ [6] ࢀՃ৘ใ౤ߘ [7] ࢀՃ׬ྃը໘දࣔ ΫϥΠΞϯτʹೝূ৘ใΛ౉͢ ͜ͱͳ͘ɺೝՄ͞Εͨൣғ಺ͷ ૢ࡞Λߦ͑Δ

8&#ΤϯδχΞษڧձ *NQMJDJU ѱҙͷ͋Δ ΤϯυϢʔβʔ ϚΠΫϩϒϩά αʔϏε ΫϥΠΞϯτ Ϧιʔεαʔόʔ ೝՄαʔόʔ
[2] ແஅ౤ߘ [3] ϓϩϑΟʔϧมߋ ϒϥ΢βΩϟογϡ΍ϩʔΧϧ ετϨʔδͳͲ͔ΒτʔΫϯΛ ౪Ή [4] ύεϫʔυมߋ [1]ΞΫηετʔΫϯΛୣऔ ϦιʔεΦʔφʔ ϢʔβΤʔδΣϯτ ❌ ೝՄ͞Εͨൣғ಺ͰϦιʔε Φʔφʔͷҙਤ͠ͳ͍ૢ࡞Λ ߦ͑Δ

8&#ΤϯδχΞษڧձ "VUIPSJ[BUJPO$PEF w 8FCΞϓϦέʔγϣϯͰ࢖͏ w Ұൠతʹ0"VUIͱݺ͹ΕΔϑϩʔ https://tools.ietf.org/html/rfc6749#section-4.1 ※ ࢴ໘ͷ౎߹্ɺϨΠΞ΢τΛҰ෦มߋͯ͠ܝࡌ

8&#ΤϯδχΞษڧձ "VUIPSJ[BUJPO$PEF ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ
ೝՄαʔόʔ [1] ࿈ܞ։࢝ [A] ೝՄαʔόʔʹϦμΠϨΫτ [B] ೝՄը໘දࣔ [B] ೝՄ৘ใೖྗ [C] ೝՄίʔυੜ੒ [C] ΫϥΠΞϯτʹϦμΠϨΫτ ΞΫηετʔΫϯͰ͸ͳ͘ ೝՄίʔυΛ౉͢

ೝՄαʔόʔ [D] ΞΫηετʔΫϯཁٻ [E] ΞΫηετʔΫϯ [E] ΞΫηετʔΫϯੜ੒ ೝՄίʔυͱҾ͖׵͑ʹ τʔΫϯΛड͚औͬͯɹ ΫϥΠΞϯτʹઃఆ

ೝՄαʔόʔ [2] ϑΥϩϫʔ৘ใऔಘ [3] ϑΥϩϫʔ৘ใ [4] ϑΥϩϫʔ৘ใදࣔ [5] ษڧձࢀՃ [6] ࢀՃ৘ใ౤ߘ [7] ࢀՃ׬ྃը໘දࣔ ΫϥΠΞϯτʹೝূ৘ใΛ౉͢ ͜ͱͳ͘ɺೝՄ͞Εͨൣғ಺ͷ ૢ࡞Λߦ͑Δ

8&#ΤϯδχΞษڧձ OAuth ೝূͱ OpenID Connect

8&#ΤϯδχΞษڧձ 0"VUIೝূ ษڧձ αʔϏε ϚΠΫϩϒϩά αʔϏε ϦιʔεΦʔφʔ ΫϥΠΞϯτ Ϧιʔεαʔόʔ
ೝՄαʔόʔ [2] Ϣʔβ৘ใऔಘ [3] Ϣʔβ৘ใ [1] OAuthͰϩάΠϯ [4]ϩάΠϯॲཧ [5] ϩάΠϯ׬ྃը໘

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8&#ΤϯδχΞษڧձ 0QFO*%$POOFDU

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8&#ΤϯδχΞษڧձ ·ͱΊ

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8&#ΤϯδχΞษڧձ 5IBOLZPV

OAuth 2.0 をかみくだく

OAuth 2.0 をかみくだく

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