.Nat Zone | Digital Identity et al.

.Nat Zone Digital Identity et al.

: Fixing OAuth?

2016/07/20 Financial API, OAuth, security cut-n-paste, FAPI, mix-up attack, OAuth, RFC6749, RFC6750

On the 14th and 15th of July, we had the OAuth Security Workshop 2016 at the University of Trier. Further, we had a IETF 96 side meeting on OAuth security at 18:20 in the beautiful Café am Neuen See to further discuss it. …

: Why is internet openness important? #OECDDigitalMX

2016/06/21 privacy, security #OECDDigitalMX, 4th Industrial Revolution, Digital Deflation, Ethics, ITAC, OECD, TUAC

(Following is the transcript of my speech at the TUAC Forum at the 2016 OECD Ministerial on the Digital Economy) Q. Why is access to an open internet important? Simply put, it is because the open access to the internet is …

: FAPI Presentation at Open Data in Finance Conference @ London

2016/06/15 identity, OAuth, OpenID Connect, OpenID Foundation, privacy, security #odf, FAPI, Fianncial API, PSD2

Here is the presentation file that I used for my 10 minutes OpenID Foundattion Financial API WG presentation at the Open Data in Finance Conference ( June 15, 2016). To join the Working Group, please sign the IPR Contribution agreement online by clicking …

: Open Data in Finance Conference: Chair’s Welcome

2016/06/15 Financial API, identity, OAuth, OpenID Connect, OpenID Foundation, security

Here is the script of the Chair’s remark at the opening of the Open Data in Fianance Conference in London (June 15, 2016) 09:00 – 09:10 Chair’s Welcome Nat SakimuraSenior ResearcherNomura Research Institute Hello. Welcome to the Open Data in …

: GSA 18F’s unauthorized Slack use caused breach of 100 GSA Google Drives?

2016/05/14 security data breach, oath2, slack

@JamieXML pinged me about the @18F breach that I completely missed. I quickly googled it and found this article. IG report:18F’s unauthorized Slack use caused breach of 100 GSA Google Drives It refers to “MANAGEMENT ALERT REPORT:GSA Data Breach” [JE16-004], …

: Authorization Delegation: A financial accounts aggregation use case

2016/01/29 identity, OAuth, OpenID Connect

I have many bank accounts. If I wanted to use a new and shiny graphing service, I have to get authorization from each banks individually. That’s a bit of nuisance. Instead of doing that, if I can instruct each banks …

: Cut and pasted code attack in OAuth 2.0 [RFC6749]

2016/01/25 OAuth, OpenID Connect, security

The so called ‘cut and pasted code attack’ also known as ‘Frankenstein Monster Attack’ is an attack that the adversary swaps the ‘code’ in the authorization response with the victim’s ‘code’ that the adversary has gotten hold of somehow. It can …

: Code phishing attack on OAuth 2.0 [RFC6749]

2016/01/22 identity, OAuth, OpenID Connect, security code phishing, mix-up, OAuth IdP Mix-up attack

Code phishing attack is the attack that the adversary obtains the code and client credentials from the legitimate client and uses them against the honest token endpoint to obtain tokens thereby accessing the protected resources illegitimately. Assumptions There are not much …

: IdP Mix-up Attack on OAuth [RFC6749]

2016/01/15 OAuth, OpenID Connect, security OAuth IdP Mix-up attack

On Sunday 10, 2016, OAuth Security Advisory: Authorization Server Mix-Up was issued. Nov Matake wrote an excellent article about it in Japanese. To help understand the readers of the attack, I am translating the portion of his blog post explaining the …

: Happy New Year!

2016/01/01 identity, privacy

2015 was a hectic year: Bunch of the specs that I have been working on (JWS [RFC7515], JWT [RFC7519], OAuth PKCE [RFC7636], JWK Thumbprint [RFC7638]）got published and the work to convert ISO/IEC 29100 Privacy Framework into Japan Industry Standard started. We had OpenID Summit Tokyo 2015 …

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