JwtValidationFilter

Validates an unsigned, signed, encrypted, or signed and encrypted JWT. The order of signing and encryption isn’t important; a JWT can be signed and then encrypted, or encrypted and then signed.

If the JWT is validated, the request continues down the chain and data is provided in the JwtValidationContext.

If the JWT isn’t validated, data is provided in the JwtValidationErrorContext. If a failure handler is configured, the request passes to the failure handler. Otherwise, an HTTP 403 Forbidden is returned.

Usage

{
  "name": string,
  "type": "JwtValidationFilter",
  "config": {
    "jwt": runtime expression<string>,
    "verificationSecretId": configuration expression<secret-id>,
    "decryptionSecretId": configuration expression<secret-id>,
    "secretsProvider": SecretsProvider reference,
    "skewAllowance": configuration expression<duration>,
    "customizer": JwtValidatorCustomizer reference,
    "failureHandler": Handler reference
  }
}

Properties

"jwt": runtime expression<string>, required: The value of the JWT in the request. Cannot be null.

"verificationSecretId": configuration expression<secret-id>, required to verify the signature of signed tokens: The secret ID for the secret to verify the signature of signed tokens.

This secret ID must point to a CryptoKey.

If configured, the token must be signed. If not configured, IG does not verify the signature.

For information about how signatures are validated, refer to Validate the signature of signed tokens. For information about how each type of secret store resolves named secrets, refer to Secrets.
"decryptionSecretId": configuration expression<secret-id>, required if AM secures access tokens with encryption: The secret ID for the secret to verify the encryption of tokens.

This secret ID must point to a CryptoKey.

If configured, the token must be encrypted. If not configured, IG doesn’t verify the encryption.

For information about how each type of secret store resolves named secrets, see Secrets.
"secretsProvider": SecretsProvider reference, required: The SecretsProvider to query for passwords and cryptographic keys.

"customizer": JwtValidatorCustomizer reference, optional

A set of validation constraints for JWT claims and sub-claims. These constraints are in addition to internally-defined constraints, such as aud, iss, exp, and iat. If a claim isn’t validated against a constraint, the JWT isn’t validated.

The customizer doesn’t override existing constraints. Defining a new constraint on an already constrained claim has an impact only if the new constraint is more restrictive.

JwtValidatorCustomizer provides a ScriptableJwtValidatorCustomizer to enrich a builder object by using its methods. Get more information about the following items:

The builder object, at Available Objects.
Transformer methods, to enrich the builder object, at org.forgerock.openig.util.JsonValues.
Constraints, at org.forgerock.openig.tools.jwt.validation.Constraints.
Other properties for ScriptableJwtValidatorCustomizer, at Scripts.

The following examples provide checks:

Check that the value of the claim greaterThan5 is greater than 5

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [
      "builder.claim('/greaterThan5', JsonValue::asInteger, isGreaterThan(5))"
    ]
  }
}

Check that the value of the claim sub is george

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [
      "builder.claim('subname', JsonValue::asString, isEqualTo('george'))"
    ]
  }
}

Check that the value of the custom sub-claim is ForgeRock

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [
      "builder.claim('customclaim/subclaim', JsonValue::asString, isEqualTo('ForgeRock'));"
    ]
  }
}

Check the value of multiple claims

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [
      "builder.claim('aud', listOf(JsonValue::asString), contains('My App'))",
      "       .claim('iat', instant(), isInThePast())",
      "       .claim('exp', instant(), isInTheFuture());",
      "builder.claim('iss', JsonValue::asString, isEqualTo('ForgeRock AM'));"
    ]
  }
}

Check that the value of val1 is greater than val2

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [ "builder.claim('/val1', JsonValue::asInteger, isGreaterThan(claim('/val2').asInteger()))" ]
  }
}

Check that the value of val1 is greater than val2, when both are YYYY-MM-DD dates

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [
      "Function<JsonValue, java.time.LocalDate, Exception> asDate() {",
      "  return (jsonValue) -> java.time.LocalDate.parse(jsonValue.asString());",
      "}",
      "builder.claim('claim1', asDate(), isGreaterThan(claim('claim2').as(asDate())));"
    ]
  }
}

Check that the claim issuer matches the regex pattern

"customizer": {
  "type": "ScriptableJwtValidatorCustomizer",
  "config": {
    "type": "application/x-groovy",
    "source": [ "builder.claim('iss', JsonValue::asString, find(~/.*am\.example\.(com|org)/))" ]
  }
}

Default: Claims aren’t validated

"skewAllowance": configuration expression<duration>, optional