An open Single Sign On (SSO) solution for the web, a problem also addressed by OpenID.

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0answers
13 views

Authorization using shibboleth sso

We have integrated shibboleth web sso into our application to authenticate the user, Now we want to do authorization for our application. The below is the process which is i am thinking for authz. ...
0
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0answers
13 views

How does WebID fit in the SAML picture?

How does WebID fit in the SAML picture? Are they related or completely unrelated? Can they work together? If yes, what are the benefits?
2
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1answer
54 views

SAML 2.0 IdP metadata security

Identity Providers (IdP) often provide a metadata file that is used when setting up SAML. This file needs to be entered into a Service Provider (SP). Do we need to keep this metadata file private and ...
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2answers
608 views

Authenticate WCF call to ADFS through Web Application Proxy (WAP)

Currently we authenticate WCF calls TO a service via ADFS, using the following procedure: Firstly, we get a SAML token from ADFS using (var factory = new WSTrustChannelFactory( new ...
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1answer
91 views

OIOSAML: assertion consumer does not work

I wrote a simple system with SP-initiating Web SSO scenario based on OIOSAML. To test the system, I deployed it on the remote host. However AssertionConsumerServiceURL, where I specified URL, on which ...
3
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1answer
106 views

SAML, and forcing a re-authentication

I have a use case forced upon me by industry regulation. I wish it wasn't there, but it is. A user logs in to my service, navigates around, etc. The user can perform many actions, but one of the ...
2
votes
1answer
168 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
2answers
111 views

Should every SAML identity provider provide a unique public certificate to the service provider?

When accepting public keys from someone setting up an identity provider for access to resources protected by a service provider using SAML 2.0, do you absolutely need to have a unique certificate? Is ...
2
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1answer
134 views

SAML for transporting authorization information

I'm thinking of using SAML for sending authentication and authorization information to system. I plan to send roles and other information as authentication attributes in the assertion. Does this ...
1
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1answer
2k 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
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1answer
95 views

SAML2 encryption

I am new to SAML2 and have a question. We have a customer that is saying that they want to encrypt the user data they are sending to us. Here is an overview of how I have this implemented today: User ...
4
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2answers
2k views

How to achieve seamless SSO without having the user to login again (SAML 2.0 & ADFS using OpenSSO)

We need to implement seamless SSO with ADFS SAML 2.0 using OpenSSO & we plan to go with IdP initiated GET binding. The user in client network will log in to ADFS with Windows credentials once ...
1
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1answer
88 views

The need for created timestamp in tokens

In different token, for example SAML, I have encountered I have seen that it includes the timestamp for when it was created. I understand the reason for a expiration timestamp, but before the token is ...
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2answers
251 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 ...
1
vote
2answers
325 views

Do I have to validate Saml2 InResponseTo?

I'm implementing a SAML2 Service provider that will be running on a public facing web site. The sign in functionality is publicly available, so anyone can get hold of a AuthnRequest from my site. ...
1
vote
1answer
325 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 ...
4
votes
2answers
4k views

How is SAML solving the cross domain single sign-on problem?

Let's say I have two websites that live on separate domains, and their service providers both talk to the same identity provider on a third domain. I log into the first website and authenticate, and ...
5
votes
3answers
3k views

SAML2 vs. OAuth - What are some reasonable relationships?

I have a service that allows SSO via SAML2. When SAML2 is used, we delegate the entire authentication process to the Identity Provider. We are considering adding OAuth in order to support some ...
1
vote
3answers
284 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 ...
4
votes
2answers
390 views

Shibboleth user attribute encryption

How does Shibboleth guarantee that 3rd parties do not get access to user attributes contained in SAML 2.0 assertion exchanged between IdP and SP? Is it correct that all user attributes are encrypted ...
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 ...
0
votes
1answer
1k views

How do I change the certificate of a Shibboleth service provider?

How do I change the certificate of a Shibboleth service provider? I have an existing identity provider (IDP) and service provider (SP) and I need to replace the certificate with a Verisign signed ...
1
vote
1answer
326 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 ...
7
votes
1answer
3k views

What is the purpose of AudienceRestriction in SAML 2.0?

Having read through the core specification for SAML 2.0 section 2.5.1.4 (page 23) I still cannot fully understand the purpose of the AudienceRestriction tag and what problem it is attempting to ...
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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 ...
5
votes
2answers
591 views

Combining capability-based access control with SAML

I have been looking into various research on identity, PKI and access control trying to boil it down to a simplified methodology for IAM (Identity & Access Management). One thing which pops up in ...
1
vote
1answer
284 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
441 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
483 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 ...