Heimdal Security Blog

What is Security Assertion Markup Language (SAML)

SAML, which stands for Security Assertion Markup Language, is an open federation standard that enables users to be authenticated by an identity provider (IdP), who may then provide an authentication token to another application, which is known as a service provider (SP). SAML makes it possible for the SP to function without having to do its own authentication and pass the identity to integrate users from both within and outside the organization. It makes it possible to exchange one’s security credentials with an SP over a network, which is often an application or service.

SAML makes it possible for public cloud services and other SAML-enabled systems to communicate with one another in a secure manner across multiple domains. You can enable a single sign-on (SSO) experience for your users across any two applications that support SAML protocol and services by using SAML. This enables an SSO to perform multiple security functions on behalf of one or more applications. SAML protocol and services are supported by the following applications:

What Are the Components of SAML?

Assertions

SAML enables one party to make claims about the traits and attributes of an entity on behalf of another party. The three types of assertions that make up an assertion are an authentication statement, an attribute statement, and an authorization decision statement.

Protocols

SAML covers a variety of request/response protocols. Because of these standards, service providers are able to  enquiry or request about a claim Inquire into the authenticity of a topic,  build and oversee the management of name identifier mappings, ask for a nearly simultaneous logout of a group of sessions that are all connected to one another (“single logout”).

Bindings

A SAML Binding is a mapping of a SAML protocol message onto conventional messaging formats and/or communications protocols. SAML Bindings may also be used interchangeably with SAML Mappings.

Profiles

The purpose of a SAML profile is to improve interoperability by reducing some of the flexibility that is unavoidable in a general-use standard. In general, a SAML profile will describe limitations and/or extensions in support of the use of SAML for a specific application. For instance, the Web Browser SSO Profile delineates the manner in which SAML authentication claims are conveyed between an identity provider and a service provider in order to make single sign-on possible for browser users.

SAML Advantages

Platform neutrality

The security framework is abstracted by SAML so that it is no longer dependent on platform designs or specific vendor implementations. One of the most essential tenants of service-oriented architecture is to decouple application logic from data security as much as possible.

Loose coupling of directories

SAML does not require user information to be maintained as the directories are loosely linked to one another. It is not necessary to keep user information updated and synced across directories in order to utilize SAML.

Enhancement of the overall online experience for final users Single sign-on

This is made possible via SAML, which allows users to verify themselves first with an identity provider, and then proceed to access service providers without requiring further authentication. In addition, identity federation, which is the connection of several identities, is supported by SAML, which makes it possible to provide users with a more tailored and private experience across all supported services.

Decreased expenses associated with administration for service providers

A single act of authentication, such as checking in with a username and password, may be “reused” several times across various services by using SAML. This can help minimize the cost of keeping account information. This responsibility is now the responsibility of the identity supplier.

Risk transference

The business model of an identity provider is often more compatible with SAML than that of a service provider. As a result, SAML may be used to shift the responsibility for the correct administration of IDs to the identity provider.

How Is the Security Assertion Markup Language Used?

The development of the SAML standard was motivated by the following four “drivers”:

How Can Heimdal™ Help You?

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