Using a bearer token does not require a bearer to prove possession of cryptographic key material (proof-of-possession).Īccess tokens are used in token-based authentication to allow an application to access an API. What is the use of bearer token?īearer Token A security token with the property that any party in possession of the token (a “bearer”) can use the token in any way that any other party in possession of it can. Some servers will issue tokens that are a short string of hexadecimal characters, while others may use structured tokens such as JSON Web Token. A Bearer Token is an opaque string, not intended to have any meaning to clients using it. What is Bearer token?īearer Tokens are the predominant type of access token used with OAuth 2.0. Similarly to Basic authentication, Bearer authentication should only be used over HTTPS (SSL). The Bearer authentication scheme was originally created as part of OAuth 2.0 in RFC 6750, but is sometimes also used on its own. The client must send this token in the Authorization header when making requests to protected resources: The name “Bearer authentication” can be understood as “give access to the bearer of this token.” The bearer token is a cryptic string, usually generated by the server in response to a login request. What is Bearer Authentication?īearer authentication (also called token authentication) is an HTTP authentication scheme that involves security tokens called bearer tokens. The tradeoff is that all API requests must be made over an HTTPS connection, since the request contains a plaintext token that could be used by anyone if it were intercepted. Bearer tokens are a much simpler way of making API requests, since they don’t require cryptographic signing of each request.
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