Authorization Delegation: A financial accounts aggregation use case
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.…
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Cut and pasted code attack in OAuth 2.0 [RFC6749]
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…
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Code phishing attack on OAuth 2.0 [RFC6749]
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…
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IdP Mix-up Attack on OAuth [RFC6749]
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…
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Happy New Year!
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…
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On the XARA vulnerability on MacOS X and iOS
Just came across this article: Apple CORED: Boffins reveal password-killer 0-days for iOS and OS X, by The Register. Since the news itself did not explain…
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Apple forcing developpers to use in-app browser instead of spawning Safari has been known as an extremely insecure practice for sometime. There many reasons that…
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JWS, JWT, and others now RFC!
It has taken soooo long [1], but JSON Web Signature (JWS), JSON Web Token (JWT) , together with other JW* suite finally are Standard Track…
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Review Comments for draft-ietf-oauth-proof-of-possession-02
Proof-Of-Possession Semantics for JSON Web Tokens (JWTs) draft 02 has been under WGLC till yesterday (March 24, 2015). During the OAuth WG meeting at IETF 92…
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Seasons Greetings 2014
Seasons greetings video as a replacement to a greeting card. The Christmas Song was written by Mel Torme & Robert Wells on a hot summer day…
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