wildfly-jwt-extension

An extension for Wildfly that provides container-managed JWT-based authentication for a Java web application.

This extension provides container-managed support for JWT, such that web applications can use the Java EE standard security mechanisms; for example, declarative roles and constraints in web.xml and the @RolesAllowed bean annotation.

The main component is a standard JAAS LoginModule that participates in Wildfly's security subsystem. The login module validates a JWT bearer token delegate and makes the claims specified in it available as roles in Wildfly's built in security stack. Additionally, it makes the claims from the JWT payload available to a deployed Java web application via a custom subtype of the javax.security.Principal interface.

Using the module, a Java web application can utilize almost any combination of container-managed authorization (through the standard mechanisms of Java EE) as well as application-specific authorization by examining the claims made available via the custom Principal that is available via the HttpServletRequest object.

Installation

The module and its dependencies must be installed in the modules directory of your Wildfly server. Thanks to Wildfly's modular design, the installed modules remain isolated in your server's configuration, and will never be seen by applications that do not require JWT support. Moreover, the library components needed by this extension will not appear on your application's class loader, avoiding any potential for conflict.

Building From Source

Clone this repository and then run Maven at the top level of the source tree. This will create a version of the extension that is compatible with Wildfly 11 and up.

mvn clean install

Install the Extension

tar -C ${WILDFLY_HOME} -zxpvf target/wildfly-jwt-${VERSION}-modules.tar.gz

Configuration

TODO

Generating Suitable RSA Key Pairs using OpenSSL

• For the RS256 algorihm, a 2048-bit key RSA key pair is recommended
• For the RS384 algorihm, a 3072-bit key RSA key pair is recommended
• For the RS512 algorihm, a 4096-bit key RSA key pair is recommended

The commands below produce a 2048-bit RSA key pair for RSA256.

openssl genrsa -out rsa-private.pem 2048
openssl rsa -in rsa-private.pem -pubout -out rsa-public.pem
openssl pkcs8 -topk8 -nocrypt -in rsa-private.pem -out rsa-private-pk8.pem  

Generating Suitable EC Key Pairs using OpenSSL

The EC curve specified by the -name parameter of the OpenSSL ecparam command must be supported by the platform.

On Alpine, note that only the secp256r1, secp384r1, and secp521r1 curves are supported.

openssl ecparam -name secp256r1 -genkey -noout -out ec-private.pem
openssl ec -in ec-private.pem -pubout -out ec-public.pem
openssl pkcs8 -topk8 -nocrypt -in ec-private.pem -out ec-private-pk8.pem  

Alpine note on supported EC curves: secp256r1, secp384r1, secp521r1 see https://github.com/docker-library/openjdk/issues/115

Sample Configuration Using RS256 Signatures And AES128 Encryption

/extension=org.soulwing.jwt:add(module=org.soulwing.jwt)
/subsystem=jwt:add
reload

/subsystem=security/security-domain=jwt:add
/subsystem=security/security-domain=jwt/authentication=classic:add
/subsystem=security/security-domain=jwt/authentication=classic/login-module=JwtClaim:add(module=org.soulwing.jwt, code=org.soulwing.jwt.extension.jaas.JwtLoginModule, flag=required, module-options={ role-claims="grp, afl" })
/subsystem=security/security-domain=jwt/authentication=classic/login-module=RoleMapping:add(code=RoleMapping, flag=optional, module-options={ rolesProperties="file:/run/wildfly/configuration/role-mapping.properties" })
reload

/subsystem=jwt/secret=trust-store-password:add(provider=FILE, properties={path="/run/secrets/trust-store-password"})
/subsystem=jwt/trust-store=default-jks:add(path="jwt-truststore.jks", relative-to="jboss.server.config.dir", provider="JCA", password-secret=trust-store-password, properties={type=JKS})

/subsystem=jwt/secret-key=shared-key-1:add(id=1, type=AES, length=128, provider=FILE, properties={path="/run/secrets/encryption-password"})

/subsystem=jwt/transformer=DistinguishedToSimpleName:add(properties={name-component=uugid})
/subsystem=jwt/transformer=FlattenCase:add
/subsystem=jwt/claim-transform=grp:add(transformers=[DistinguishedToSimpleName,FlattenCase])
/subsystem=jwt/signature=public-key:add(algorithm=RS256, trust-store=default-jks)
/subsystem=jwt/encryption=shared-key:add(key-management-algorithm=A128KW, content-encryption-algorithm=A128CBC-HS256, compression-algorithm=DEF, secret-keys=[shared-key-1])
/subsystem=jwt/validator=default:add(issuer="token-issuer", issuer-url="https://token-issuer.localhost.vt.edu", expiration-tolerance=90, audience="test-service", signature=public-key, encryption=shared-key, transforms=[grp])