eenaelpheed - PDF document

1 Ăȃ Ԇ܈iऄ਋unഄ ฌthᄉ༇ሓ༇à
Ăȃ Ԇ܈iऄ਋unഄ ฌthᄉ༇ሓ༇ଉДą਎) ̆ଖiഇnࠄጄᜓ᠄་ЙiᨛᰓሑЃጚᨗଆച dؓᴏḝጆؑᰜḐ༏ᬟܚḐobaḠ2 ∏eᬐenУa؆elᰤК༑pheथᴓ؆eᰜ☒ᨥ༒d.ܑ Pጌᰄċfᴧan,Лaul┐off✓n☖pnc┋؈ ⠇⤑ –ဋmas␄mܩe☛hؑshᄑz┒om ⬬–Fḭ5 Prଟᰑ✤ЯଓlsаТଜఏ܋ऄԖᄆvܑw Web sites have password verifier databases and those frequently leak out exposing (literally) ✇llions of (may

2 be hashed, ✓ybe not) passwords every
be hashed, ✓ybe not) passwords every year – pick your favourite exa✛le –P bad effects Goal: Replace password verifier database entries with so✑thing that can safely leak, in a way that can easily be “dropped in” to a site Non goal: solve all web authentication problems OBA Solution: Password verifier replaced with public key used only for that ᨇte Private key used in signature based challenge-response protocol as an È

3 ‚P authentication Method – from Jav
‚P authentication Method – from Javascript Private key storage in browser ( ––P Auth) or LocalStorage (Javascript) Javascript aspects of the solution are non-nor✓tive but a good example to follow Usual cookie based session stuff can follow authentication Admin (enroll/mobility/etc.) fully controlled by application in a process triggered via .well-known URLs. ̇c༌re –BD AУeᜄᤑ༓ܜs Eआଜlmᄉ༄viጄ┗ᄜlḩऋwऽá€

4 ‹á¼“ã´„mᄓचЏဓ༄ OBAАጚйO చá
‹á¼“ã´„mᄓचЏဓ༄ OBAАጚйO చᄆЇएᄆfacᄤГllЇsМᄝ༄་ЏထГᬛlicጏiଉ␄ᄥg┄noЌsᄆnamᄄ ऑe഑d ฒcଌnt/ฌtထएܒጏioऄsᄛጆጏiଉ ܚ crఒiጜ Mikᄾsк጖ጚc؇ᬏЇmᬜᄧᄉ༓༇ଉ isМivᄵ ဏtᬵ//mtcc.cଧ/ –ဇईsЉᄑഇईЗଆk: Chጜᰑईᄄrᄚᬋचe cؘᬏ଄dᄏail 㬑vᄜ ଝ ဓrmଉܚጏ܋ऄἑtwᄑऄ ––P ጌtငጉഄJ጖ጚcriᬏ aऍl܉g ଝ ଝf-s܏ᄄrᄞഇrᄒt

5 s dఆ܉ࠄᄥࠥ ᄉ؋ᰜmᄉt Detጇá°
s dఆ܉ࠄᄥࠥ ᄉ؋ᰜmᄉt Detጇᰚ dᄏaiᰚ... Sధ✓ry LosᨄoᴄpassᜋrdЍa༓basesЇsГЩeyЛroblem ༐a༄ܚ cos༜y␄seriouᨤНairlyЗ܍espread,Јe༏܉g ᜋrseГndГnyКi༑ВanПeГfᴑc༑dПyГnyЋther gܖenЛassᜋrdІe-use pat༑rns OBA ᨋlves O؇g problem, which is our goal ⬏ЇsДway past)Џܧe ༐a༄the ⬬–⌄ofᴑredЏhe ⬉༑rne༄commun܏yКome༐ing uᨓble and more secure We thin⤄ OBA does this