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What is a token?

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Anonymous

13y ago
Updated: 8/29/2022

Security tokens are a key component in web sites and identity deployments. Security tokens are the vehicles used to pass information back and forth between identity providers and service providers. The architecture of the security token will determine what information can be passed and how the information will be passed. Some security token architectures focus on simplicity; some focus on robustness. Three of the more common security tokens are Simple Web Tokens (SWT), JSON Web Tokens (JWT), and Security Assertion Markup Language (SAML) tokens.

Simple Web Tokens

Simple Web Tokens, or SWT tokens, use a very simple format for transmitting assertions. Simple Web Token assertions consist of name/value pairs. Because of this simple format, SWT tokens are very lightweight. They are often used in HTTP headers and other places where space is limited. SWT token are relatively easy to implement, but for more robust solutions, one of the other web token architectures should be used.

JSON Web Tokens

A JSON Web Token, or JWT, is a method for representing claims. JWTs use a compact format that is often used in HTTP Authorization headers and URI queries. In a JSON Web Token, the claims are encoded as a JSON object. The tokens are then encoded using Base64 encoding. JSON Web tokens are digitally signed using a JSON web signature, or JWS. For additional security, JSON Web Tokens can also be encrypted using JSON Web Encryption, or JWE.

SAML Tokens

SAML, or the Security Assertion Markup Language, is an XML-based standard for sending authentication and identity information. SAML has four main components: SAML assertions, SAML protocols, SAML bindings, and SAML profiles. SAML uses assertions to make user identity statements. SAML protocols are request/response protocols. SAML bindings are when SAML messages are mapped to common communication protocols. SAML profiles are a combination of SAML assertions, protocols, and bindings. SAML profiles are usually defined for a particular purpose or use case.

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Emma Goldner

Lvl 9
2y ago

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