JSON Web Token1.0
This feature allows the runtime to create JSON Web Tokens(JWT).
Enabling this feature
To enable the JSON Web Token 1.0 feature, add the following element declaration into your server.xml
file, inside the featureManager
element:
<feature>jwt-1.0</feature>
Examples
Construct JWT for an application
The following example shows how to configure the server to construct a JSON Web Token (JWT) for an application.
<keyStore id="defaultKeyStore" password="keyspass"/>
<jwtBuilder id="myBuilder" keyAlias="default" issuer="https://example.com" expiresInSeconds="600"/>
The id
attribute for the jwtBuilder
element named myBuilder
identifies the JWT builder, and uses the default keyAlias
attribute to locate the private key. The issuer
attribute in the example is the http://example.com
URL that identifies who issued the JSON Web Token.
The expiresInSeconds
attribute indicates the token expiration time, which is 600 seconds.
Configure the JWT consumer
When the JSON Web Token feature is enabled, Open Liberty creates a default configuration with the following values.
The
alg
header of the consumed JWT is RS256. You can configure this value on thesignatureAlgorithm
attribute.A JWT is considered to be valid within 5 minutes of the
exp
,nbf
, andiat
claims. You can configure this value on theclockSkew
attribute.
You can reconfigure these defaults by specifying a jwtConsumer
element with an id
value of defaultJWTConsumer
and configuring attribute values. You can also create one or more other jwtConsumer
elements. Each jwtConsumer
element must have a unique, URL-safe string specified as the id
attribute value. If the id
value is missing, the jwtConsumer
is not processed. For more information about the available configuration attributes, see JWT consumer.
For JWT tokens that are signed with RS256 and an X.509 certificate, configure the trustStoreRef
and trustAliasName
attributes to locate the signature verification key.
Import the JWT issuer’s X.509 certificate into the truststore.
In the
jwtConsumer
element, specify the truststore ID and the certificate alias.
<jwtConsumer id="defaultJWTConsumer" trustStoreRef="truststore_id" trustAliasName="certificate_alias">
</jwtConsumer>
Verify and parse JWT tokens in your application
The following examples show how to programmatically verify and parse JWT tokens by implementing the com.ibm.websphere.security.jwt.JwtConsumer
and com.ibm.websphere.security.jwt.JwtToken
APIs in your application.
Create a
JwtConsumer
object. If you do not specify a configuration ID, the object is tied to the defaultjwtConsumer
configuration.
com.ibm.websphere.security.jwt.JwtConsumer jwtConsumer = JwtConsumer.create();
If you specify a configuration ID, the object is tied to the jwtConsumer
configuration with the specified ID.
com.ibm.websphere.security.jwt.JwtConsumer jwtConsumer = JwtConsumer.create("jwtConsumer_configuration_id");
2 . Verify and parse a JWT token by implementing the com.ibm.websphere.security.jwt.JwtToken
API.
JwtToken jwtToken = jwtConsumer.createJwt("Base64_encoded_JWT_token>");
Sign and verify JWTs with JSON Web Keys (JWK)
You can configure Open Liberty to use JWKs to sign the JWTs it builds and to verify the JWTs it consumes. For more information, see Sign and verify JSON Web Tokens with JSON Web Keys.