2
votes
1answer
133 views

SAML and OpenID, centralized and decentralized

I'm learning SAML, which is said to be centralized. To understand the difference with decentralized, I'm reading about OpenID. I find it difficult to understand the difference between the two, ...
1
vote
1answer
812 views

SAML and kerberos what to use where [closed]

I came across SAML and kerberos, both are used to establish identity using assertions (tickets) so is there an overlap in their use ? Can somebody highlight their differences and point which ...
0
votes
2answers
194 views

In a SAML2 FSSO Web Browser profile (HTTP POST), should the IdP analyse the AuthnRequest before asking the user to authenticate? [closed]

Context: SAML2 Web Browser SSO profile. (HTTP POST binding). Federated SSO. If the IdP gets an <AuthnRequest> from the SP, should / must / can the IdP do the user authentication first, or ...
0
votes
1answer
274 views

How does the authentication flow with Azure Active Directory differ from Azure ACS?

I understand that Azure ACS acted as a STS that had the ability to redirect users to a given STS (OpenID, LiveID, Facebook) or authenticate using a local user/password account. In a passive situation ...
1
vote
3answers
272 views

Should WS-Fed, Mozilla's Persona or OpenID ever be used with a Banking application?

Most banking sites I've seen use a sign in process that is proprietary, or otherwise won't integrate with an external IDP. Should banks offer integration with services like OpenID, WS-Fed, or ...
8
votes
4answers
3k views

How do the STS token formats compare to each other SAML vs SWT vs JWT?

I'm configuring an Azure ACS STS and would like to know if there is any impact on security based on the following token formats or how they are used. The answers to this questions should apply to ...
1
vote
1answer
307 views

How can a SAML Relying Party redirect to one of two IDPs?

We need to support the following Authentication flows User 1 logs into Salesforce using Salesforce Credentials User 2 logs into Salesforce using Arcot +Ping + Siteminder credentials User 2 logs into ...
0
votes
1answer
1k views

What are the potential vulnerabilities in a SAML-based SSO approach?

What level of access would an attacker need to obtain to compromise a SAML-based SSO system? Would stealing the private key used to sign SAML requests be enough? What if an attacker had root on the ...
1
vote
1answer
275 views

What risk can untrusted WS-Federation metadata pose?

I'm adding support for SAML/ADFS/Azure ACS and read that untrusted metadata poses a risk. Considering that ADFS does background refreshes of the metadata, as do some RPs, can someone explain the ...
8
votes
4answers
429 views

Does OpenID, SAML pose a threat to Tor's anonymity? How can I protect from a compromised .exit node?

This is a thought experiment on the interaction between Tor, OpenID and one (or more) compromised nodes in the secure path. I'm focused on how to use technology in a way that adds value to a secure ...
5
votes
2answers
2k views

Verify SAML Response is from a Trusted Source

I'm in the process of making changes to my site so that we can be a SAML 2.0 Service Provider. We will be doing IdP initiated SAML with Out-of-Band account federation. My question is this: Given a ...
4
votes
1answer
467 views

How does the “Service Identity” feature of Azure ACS compare (and contrast) to a real IDP?

It appears that the ACS has IDP-style features within the "Service Identities" section. How does the ACS treat these in comparison to a real IDP? What is missing? Some examples I'm thinking of ...
4
votes
2answers
1k views

How do Azure ACS 2.0 security features compare to ADFS 2.0?

I'm configuring my relying party (a website) to use either ADFS or Azure ACS 2.0. ADFS 2.0 has some interesting features such as Token Replay prevention (in the SQL version) and may have other SAML ...