Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Email, Messaging, and SSI/DID (再放送)
Search
sylph01
November 19, 2020
Technology
0
1.3k
Email, Messaging, and SSI/DID (再放送)
@ #idcon vol.28
https://idcon.connpass.com/event/191305/
sylph01
November 19, 2020
Tweet
Share
More Decks by sylph01
See All by sylph01
Updates on PicoRuby Networking, HPKE (and maybe more)
sylph01
1
130
Adding Security to Microcontroller Ruby
sylph01
2
2.9k
Secure Messaging at IETF 118
sylph01
0
56
Adventures in the Dungeons of OpenSSL
sylph01
0
400
Community & RubyKaigi Showcase @ Ehime.rb Reboot Meetup
sylph01
0
250
Build and Learn Rails Authentication
sylph01
8
1.9k
Email, Messaging, and Self-Sovereign Identity (2021/05/28 edition)
sylph01
0
230
DNS Encryption and Its Controversies
sylph01
0
670
Action Mailbox in Action
sylph01
1
3.1k
Other Decks in Technology
See All in Technology
日経電子版から始まった内製開発の現在地と向き合っている課題/inhouse
nishiuma
0
230
20分で分かるIAM全機能 (拡大版) / 20240903-jawsug-yokohama-iam
opelab
3
120
【Λ(らむだ)最近のアプデ情報 / RPALT20240904
lambda
0
160
夏休みの(最後の)宿題 for JuliaTokyo #12
antimon2
0
130
標準ライブラリの奥深アップデートを掘り下げよう!
logica0419
2
390
AWS IAM Identity Center議論会 〜 認証認可結合モデルと認証認可分離モデル / 20240827-jawsug-arch-iam_identity_center
opelab
3
320
エンジニア採用を起点に取り組む組織の改善活動と課題、中長期のタスク管理/ #HRmethod
nishiuma
4
3.3k
waitany と waitall を作った話
mrkn
0
110
ログラスが面白いと思う理由をマネージャーがエモく語ってみる / 20240829 vs LT
yoshikiiida
1
520
手軽に始める? おうちサーバーのすゝめ
nyagasan
0
180
LLM を現場で評価する
asei
4
680
データウェアハウス製品のSnowflakeでPythonが動くって知ってました?
foursue
1
150
Featured
See All Featured
Code Reviewing Like a Champion
maltzj
518
39k
Docker and Python
trallard
39
3k
The Brand Is Dead. Long Live the Brand.
mthomps
53
37k
How STYLIGHT went responsive
nonsquared
93
5.1k
The Pragmatic Product Professional
lauravandoore
30
6.2k
10 Git Anti Patterns You Should be Aware of
lemiorhan
653
58k
Git: the NoSQL Database
bkeepers
PRO
425
64k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
157
15k
Designing the Hi-DPI Web
ddemaree
278
34k
The Cult of Friendly URLs
andyhume
76
5.9k
[RailsConf 2023] Rails as a piece of cake
palkan
44
4.6k
Atom: Resistance is Futile
akmur
261
25k
Transcript
Email, Messaging, and SSI/DID Ryo Kajiwara / sylph01 @ #idcon,
2020/11/19, ຊޠ࠶์ૹ
ҙࣄ߲ • ͜ΕͲͪΒ͔ͱ͍͏ͱҙݟද໌ͷΑ͏ͳੑ࣭ͷൃදͰ͢ • Ұ࣌ظͷQiitaͰ͍͏ͱ͜ΖͷʮϙΤϜʯ • ٞͷͨΊͷΞΠσΞग़͠Λ͢Δੑ࣭ͷͷͰ͢ • ΑͬͯɺϓϩμΫτ։ൃՌͷσϞͰ͋Γ·ͤΜ •
·ͨɺٞલఏʹൈ͚݀༨༟Ͱଘࡏ͢ΔͣͰ͢
None
TL;DR
SMTPΛ ΊΖ
Ͳ͏ͬͯ ΊΔʁ
None
ϝοηʔδϯάʹٻΊΔੑ࣭ • End-to-End҉߸Խ • ࠷֤ۙࠃ͕ban͠Α͏ͱ͍ͯ͠Δͬͯʁ • ҉߸Խ͞Εͨάϧʔϓϝοηʔδϯά • σʔλͷ੍ޚ •
identityදݱͷ੍ޚ
Q: ͳΜͰLINE / Facebook Messenger / WhatsApp etc.͕͋Δͷ ʹϝʔϧͳΜ͔ͬͯ Δͷʁ
Q: ͳΜͰLINE / Facebook Messenger / WhatsApp etc.͕͋Δͷ ʹϝʔϧͳΜ͔ͬͯΔͷʁ •
SMTPेͳ҉߸ԽೝূΛ͍࣋ͬͯͳ͍ • Eϝʔϧ௨ৗEnd-to-End҉߸ԽΛ͍࣋ͬͯͳ͍ • PGPS/MIMEΛͬͨͱ͜ΖͰάϧʔϓʹର͢Δ҉߸Խί ϛϡχέʔγϣϯͰ͖ͳ͍ • Eϝʔϧʹspam͕͋Δ
Q: ͳΜͰLINE / Facebook Messenger / WhatsApp etc.͕͋Δͷ ʹϝʔϧͳΜ͔ͬͯΔͷʁ A:
ࣄલͷ৴པؔͷͳ͍ਓ͔Β ϝοηʔδΛड͚औΔ͜ͱ͕Ͱ͖Δ
Eϝʔϧʹspam͋Δ ͡ΌΜʂ
Eϝʔϧʹspam͕͋Δ ͷϓϩτίϧʹΈ ࠐ·Εͨಗ໊ੑ͕ݪҼ
Eϝʔϧͷಗ໊ੑ ʮࣄલͷ৴པؔͷͳ͍ਓ͔ΒϝοηʔδΛड͚औΕΔʯͱ͍͏ ੑ࣭ిʹ͋ͯ·Δ͕ɺEϝʔϧʹిʹ͋ΔΑ͏ͳ anti-abuse mechanismΛ͍࣋ͬͯͳ͍ɻ͜ΕEϝʔϧͷಗ໊ੑʹ ΑΔͷͰ͋Δɻ • ిΛabuseͨ͠߹ٯ୳͕Մೳ • Eϝʔϧʹ͓͍ͯidentityͷspoofing͕༰қͰɺั·͑Δ͜ͱ͕
ࠔ • ͱ͍͏͔Eϝʔϧʹ·ͱͳidentity layer͕ͳ͍
spammerEϝʔϧͷ ಗ໊ੑΛͬͯѱࣄΛ ಇ͘
ͦͦಗ໊ͷEϝʔϧɺཉ ͍͠ʁ ಗ໊ͷEϝʔϧߴ֬Ͱspamɻ ৽ͨʹ৴པؔ݁ͼ͍ͨ߹ಗ໊Ͱ͋Δ͜ͱʹ͍͍͜ͱͦΜͳ ʹͳ͍ɻ
͡Ό͋S/MIMEΛશҬత ʹ͍͍͑ͷͰʁ
S/MIMEͷ • ߴ͍ • ൃߦ͞Εͨ༻్ʹറΒΕΔ • ͋Δূ໌ॻಛఆͷorganizationʹ͓͚ΔॴଐΛূ໌ͯ͘͠Ε Δ͔͠Εͳ͍͕ • ΠϯλʔωοτͰৗʹͦͷಛఆͷࢠΛͣͬͱ͔Ϳ͍ͬͯͨ
͍͔ͱ͍͏ͱͦ͏Ͱͳ͍ • ෳͷূ໌ॻ͍͍͑͡ΌΜʁ1ߦʹΔ
ͬͱυϥεςΟοΫͳղ๏: ϚΠφϯόʔΧʔυͷ ূ໌ॻͰsign͞Εͨ ϝʔϧͳΒࣗಈతʹड ͚ೖΕΔ
୭ϚΠφϯόʔʹඥ ͍ͨΞΧϯτͰ spamͳΜ͔͠ͳ͍Ͱ ͠ΐʁ
·͋Θ͟Θ͟SSI/DIDͷ ฉ͖ʹདྷΔํͳΒ͜ ΕͷԿ͕ා͍͔Θ͔ Δͱࢥ͍·͕͢
None
Eϝʔϧͷself-sovereignੑ SMTP/POP/IMAPͱͱself-sovereignੑΛຬͨ͢ϓϩτίϧͰ ͋ͬͨɻࣗͰαʔόʔཱͯΔݶΓɻ • ࣗͰIDΛൃߦͰ͖Δ • ༻్ʹԠͯ͡IDΛ͍͚Δ͜ͱ͕Ͱ͖Δ • ࣗͷσʔλͷίϯτϩʔϧࣗͰ࣋ͭ͜ͱ͕Ͱ͖Δ
Eϝʔϧͷself-sovereignੑ ࠷ۙ୭ͦΜͳ͜ͱ͠ͳ͍ɻ • SMTP: దʹೝূ͢Δͷ͕͍͠ɻઃఆ1ݸͰؒҧ͑Δͱ spamͷ౿Έɻ • IMAP: ϚϧνσόΠεΞΫηεͳΒඞਢɻ͚ͩͲετϨʔδཧ ࠈʹؕΔ
݁Ռɺຊདྷself-sovereignͰ͋Δͣͷϓϩτίϧͳͷ͕ͩɺதԝ ूݖԽΛڐͯ͠͠·ͬͨ
Eϝʔϧͷself-sovereignੑ EϝʔϧͷதԝूݖԽspamͷΛΑΓѱԽ͍ͤͯ͞Δɻதԝ ूݖతEϝʔϧϓϩόΠμͷspamϑΟϧλͷಈ࡞ʹेͳಁ໌ੑ͕ ͳ͘ɺѱҙͷͳ͍ϝʔϧͰ͢ΒspamϑΟϧλʹҿ·ΕΔɻதԝू ݖతEϝʔϧϓϩόΠμΛར༻͍ͯ͠ͳ͍ϝʔϧspamϑΟϧλΛ ৴༻ͤ͞Δ͜ͱ͕͘͠ͳΓɺΑΓதԝूݖԽ͕ਐΉ ʢಁ໌ੑ͕͋ͬͨΒ͋ͬͨͰspamۀऀ͕ͦΕΛᷖճͯ͘͠ΔͷͰ Ϛζ͍ͱ͍͑ͦͷͱ͓Γ͕ͩ…ʣ
"Principles of User Sovereignty / Fundamental Problems of Distributed Systems"
@ IIW30 ʮࢄγεςϜͷ๊͑ΔࠜຊతͳΛղܾͰ͖ͳ͍ͱ͖ɺͦΕ اۀʹΑΔதԝूݖԽ(corporate capture)ΛࣗΒڐͯ͠͠·͏ʯ Eϝʔϧ·͞ʹ͜ͷ࠷ͨΔྫͰ͋ΔɻࢄγεςϜ๊͕͑Δຊ࣭ తͳʹରͯ͠ेͳղܾ͕ͳ͞Εͳ͔ͬͨͨΊɺاۀͦ͜ ʹϚωλΠζͷػձΛݟग़͠ɺதԝूݖԽͯ͠͠·ͬͨɻ
"Fundamental Problems of Distributed Systems" ྫ: • ϊʔυͷσΟεΧόϦʔ(Eϝʔϧͷ߹ૹ৴ઌͷ֬ఆʹඞཁ) • ϊʔυ͕ωοτϫʔΫʹࢀՃ͢Δࡍͷηογϣϯͷཱ֬
(introduction) • ϓϥΠόγʔ(ظతͳؔ࿈͚ͷࢠ) • τϥετ
Eϝʔϧ͕digital identityͷ֩ͱͳΔ ͜ͱͷා͍ ύεϫʔυΕͨͱ͖ͷϦηοτ͍͍ͩͨEϝʔϧΛ௨ͯ͠ߦΘ Ε·͢Ͷʁ →Eϝʔϧ͕ͬऔΒΕΔͱ͋ͳͨͷΠϯλʔωοτ্ͷidentity શͯͬऔΕ·͢ɻ secure messaging͕ସͰ͖Δ͔Ͳ͏͔͓͖ͯ͞ɺेʹηΩϡ ΞͰͳ͍ϓϩτίϧ/ΤίγεςϜΛdigital
identityͷ֩ͱ͢Δͷ ةݥͰ͋ΓɺସΛߟ͑Δඞཁ͕͋Δɻ
None
Ͳ͏ͨ͠ΒղܾͰ͖ Δʁ
༧ઢ: ͜Εͬͯཁ͢ΔʹBetter PGPͷͩΑͶʁ →ͬͯΔɻ
Verifiable CredentialΛ༻͍ͨEϝʔϧ ֤τϥϯβΫγϣϯʢ͜͜ͰEϝʔϧͷΓͱΓʹ૬͢Δʣ͝ ͱʹҟͳΔidentityͷදݱΛΓग़ͯ͠͏ʹͲ͏͢ΕΑ͍ ͔ʁˠಛఆͷidentityͷදݱʹରԠ͢Δverifiable credentialΛ͑ Α͍ spamϑΟϧλEϝʔϧʹؔ࿈͍ͮͨVCͷਖ਼ੑɾ৴པΛఆ ͢Δ
Verifiable CredentialΛ༻͍ͨEϝʔϧ Կ͕خ͍͠ʁ • ૹ৴ऀ: ʢϝʔϧ͕ਖ਼ͳ༻్Ͱ͋ΔݶΓʣspamϑΟϧλʹ ͻ͔͔ͬΔ͜ͱ͕ݮΔ • ͍ͭͰʹɺৗʹެࣜͳࢠ͔Ϳͬͯͳͯ͘Α͍ •
ड৴ऀ: spam͕ݮΔɺ·ͱͳϝʔϧ͕ड৴ശʹೖͬͯ͘Δ • ͪΌΜͱͨ͠ϓϩτίϧ֦ுΛ͢ΕݱࡏͷSMTPͷΤίγες ϜͱڞଘͰ͖Δ
Messaging Layer Security https://messaginglayersecurity.rocks/ ηΩϡΞͰinteroperableͳάϧʔϓϝοηʔδϯάͷͨΊͷϓϩτ ίϧΛఆٛ͠Α͏ͱ͍ͯ͠ΔIETFͷWGɻ End-to-End҉߸ԽΛ࣋ͭʢͦΕͦ͏ʣɺ҉߸Խάϧʔϓϝο ηʔδϯά͕Մೳ ಛఆͷϓϥοτϑΥʔϜʹ͓͚ΔID͕ඞཁ
DIDComm Aries RFC 0005: DID Communication Ͱઆ໌͞Ε͍ͯΔDID Agentಉ࢜ ͷίϛϡχέʔγϣϯϝΧχζϜɻ DIDCommͱ͍͏ϓϩτίϧ͕͋Δɺͱ͍͏ΑΓDIDCommͷ্ʹ
֤ΞϓϦέʔγϣϯ͝ͱͷϓϩτίϧΛ࣮͢Δɺͱ͍͏΄͏͕ ͯ·ΔɻExplainerͰ˓×ήʔϜ༻ͷϓϩτίϧΛDIDCommͷ ্Ͱ࣮͍ͯ͠Δɻ
DIDComm ओͳಛͱͯ͠ɺʮඇಉظɺ୯ํ(simplex)ͷϝοηʔδϯάͰ͋ ΔʯʮτϥϯεϙʔτґଘੑΛ࣋ͨͳ͍(transport-agnostic)ʯ ʮEnd-to-end҉߸Խ͞Ε͍ͯΔʯͱ͍͏ੑ࣭͕͋Δɻ ૹΓઌͷൃݟ(discovery)DID RelationshipͷߏஙʹΑͬͯߦΘΕ Δɻ
None
·ͱΊ • Eϝʔϧͷͱͯ͠ʮ҉߸Խ͕ेͰͳ͍ʯ͜ͱʹՃ͑ͯʮ· ͱͳidentity layer͕ͳ͍ʯͱ͍͏͕͋Δ • identity layerͷߏஙΛதԝूݖԽ͞ΕͨEϝʔϧϓϩόΠμʹ· ͔ͤͯ͠·͏ͱEϝʔϧͷࡏతͳself-sovereignੑΛࣦͬͯ͠ ·͏
• DIDVCٕज़ͰEϝʔϧͷidentity layerΛ࡞Δ͔ɺͦͦDIDʹ ΑΔidentity layerΛ࣋ͭϓϩτίϧͰ͋ΔDIDCommʹ͔ͬͬ ͯ͠·͏ͷ͕Α͍ͷͰʁ