WORKERS AHEAD!

You are viewing the development documentation for the Apereo CAS server. The functionality presented here is not officially released yet. This is a work in progress and will be continually updated as development moves forward. You are most encouraged to test the changes presented.

Duo Security User Registration

If users are unregistered with Duo Security or allowed through via a direct bypass, CAS will query Duo Security for the user account apriori to learn whether user is registered or configured for direct bypass. If the account is configured for direct bypass or the user account is not registered yet the new-user enrollment policy allows the user to skip registration, CAS will bypass Duo Security altogether and shall not challenge the user and will also NOT report back a multifactor-enabled authentication context back to the application.

YMMV

In recent conversations with Duo Security, it turns out that the API behavior has changed (for security reasons) where it may no longer accurately report back account status. This means even if the above conditions hold true, CAS may continue to route the user to Duo Security having received an eligibility status from the API. Duo Security is reportedly working on a fix to restore the API behavior in a more secure way. In the meanwhile, YMMV.

If you would rather not rely on Duo Security’s built-in registration flow and have your own registration application that allows users to onboard and enroll with Duo Security, you can instruct CAS to redirect to your enrollment application, if the user’s account status is determined to require enrollment. This typically means that you must turn on user-account-status checking in CAS so that it can verify the user’s account status directly with Duo Security. You must also make sure your integration type, as selected in Duo Security’s admin dashboard, is chosen to be the correct type that would allow CAS to execute such requests and of course, the user in question must not have been onboard, enrolled or created previously anywhere in Duo Security.

The redirect URL to your enrollment application may include a special principal parameter that contains the user’s identity as JWT. Cipher operations and settings must be enabled in CAS settings for Duo Security’s registration before this parameter can be built and added to the final URL.

The following settings and properties are available from the CAS configuration catalog:

_{The configuration settings listed below are tagged as Required in the CAS configuration metadata. This flag indicates that the presence of the setting may be needed to activate or affect the behavior of the CAS feature and generally should be reviewed, possibly owned and adjusted. If the setting is assigned a default value, you do not need to strictly put the setting in your copy of the configuration, but should review it nonetheless to make sure it matches your deployment expectations.}

cas.authn.mfa.duo[0].registration.crypto.encryption.key=

The encryption key is a JWT whose length is defined by the encryption key size setting.

This setting supports the Spring Expression Language.

org.apereo.cas.configuration.model.core.util.EncryptionJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

When possible, properties should be stored in lower-case kebab format, such as cas.property-name=value. The only possible exception to this rule is when naming actuator endpoints; The name of the actuator endpoints (i.e. ssoSessions) MUST remain in camelCase mode.

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.encryption.key=...

This is the most common form of property configuration that is recognized by CAS, regardless of the actual property source, which might in fact be managed separately outside the CAS environment, by another system or cloud framework.

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            encryption: 
              key: "..."

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.encryption.key="..." -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory. Note the placement of the system property which must be specified before the CAS web application is launched.

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENCRYPTION_KEY="..."

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.encryption.key="..."

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.signing.key=

The signing key is a JWT whose length is defined by the signing key size setting.

This setting supports the Spring Expression Language.

org.apereo.cas.configuration.model.core.util.SigningJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.signing.key=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            signing: 
              key: "..."

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.signing.key="..." -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_SIGNING_KEY="..."

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.signing.key="..."

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

_{The configuration settings listed below are tagged as Optional in the CAS configuration metadata. This
flag indicates that the presence of the setting
is not immediately necessary in the end-user CAS configuration, because a default value is assigned or
the activation of the feature is not conditionally controlled by the setting value. In other words, you should only include this field in your
configuration if you need to modify the default value or if you need to turn on the feature controlled by the setting.}

cas.authn.mfa.duo[0].registration.crypto.alg=A256CBC-HS512

The signing/encryption algorithm to use.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.alg=A256CBC-HS512

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            alg: "A256CBC-HS512"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.alg="A256CBC-HS512" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ALG="A256CBC-HS512"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.alg="A256CBC-HS512"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.enabled=true

Whether crypto operations are enabled.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.enabled=true

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            enabled: "true"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.enabled="true" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENABLED="true"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.enabled="true"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.encryption-enabled=true

Whether crypto encryption operations are enabled.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.encryption-enabled=true

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            encryption-enabled: "true"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.encryption-enabled="true" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENCRYPTION_ENABLED="true"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.encryption-enabled="true"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.encryption.key-size=512

The encryption key size.

org.apereo.cas.configuration.model.core.util.EncryptionJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.encryption.key-size=512

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            encryption: 
              key-size: "512"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.encryption.key-size="512" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENCRYPTION_KEY_SIZE="512"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.encryption.key-size="512"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.signing-enabled=true

Whether crypto signing operations are enabled.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.signing-enabled=true

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            signing-enabled: "true"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.signing-enabled="true" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_SIGNING_ENABLED="true"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.signing-enabled="true"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.signing.key-size=512

The signing key size.

org.apereo.cas.configuration.model.core.util.SigningJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.signing.key-size=512

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            signing: 
              key-size: "512"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.signing.key-size="512" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_SIGNING_KEY_SIZE="512"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.signing.key-size="512"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.strategy-type=ENCRYPT_AND_SIGN

Control the cipher sequence of operations. The accepted values are:

ENCRYPT_AND_SIGN: Encrypt the value first, and then sign.
SIGN_AND_ENCRYPT: Sign the value first, and then encrypt.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.strategy-type=ENCRYPT_AND_SIGN

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            strategy-type: "ENCRYPT_AND_SIGN"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.strategy-type="ENCRYPT_AND_SIGN" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_STRATEGY_TYPE="ENCRYPT_AND_SIGN"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.strategy-type="ENCRYPT_AND_SIGN"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.registration-url=

Link to a registration app, typically developed in-house in order to allow new users to sign-up for duo functionality. If the user account status requires enrollment and this link is specified, CAS will redirect the authentication flow to this registration app. Otherwise, the default duo mechanism for new-user registrations shall take over. Upon redirecting to the registration app, CAS would also build a principal parameter into the registration URL, typically in form of a JSON web token that conveys the user's identity. This JWT can be signed and/or encrypted using settings defined via the #getCrypto() configuration block here.

org.apereo.cas.configuration.model.support.mfa.duo.DuoSecurityMultifactorAuthenticationRegistrationProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.registration-url=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          registration-url: "..."

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.registration-url="..." -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_REGISTRATION_URL="..."

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.registration-url="..."

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.encryption.key=

The encryption key is a JWT whose length is defined by the encryption key size setting.

This setting supports the Spring Expression Language.

org.apereo.cas.configuration.model.core.util.EncryptionJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.encryption.key=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            encryption: 
              key: "..."

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.encryption.key="..." -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENCRYPTION_KEY="..."

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.encryption.key="..."

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.signing.key=

The signing key is a JWT whose length is defined by the signing key size setting.

This setting supports the Spring Expression Language.

org.apereo.cas.configuration.model.core.util.SigningJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.signing.key=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            signing: 
              key: "..."

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.signing.key="..." -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_SIGNING_KEY="..."

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.signing.key="..."

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.alg=A256CBC-HS512

The signing/encryption algorithm to use.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.alg=A256CBC-HS512

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            alg: "A256CBC-HS512"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.alg="A256CBC-HS512" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ALG="A256CBC-HS512"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.alg="A256CBC-HS512"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.enabled=true

Whether crypto operations are enabled.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.enabled=true

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            enabled: "true"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.enabled="true" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENABLED="true"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.enabled="true"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.encryption-enabled=true

Whether crypto encryption operations are enabled.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.encryption-enabled=true

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            encryption-enabled: "true"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.encryption-enabled="true" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENCRYPTION_ENABLED="true"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.encryption-enabled="true"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.encryption.key-size=512

The encryption key size.

org.apereo.cas.configuration.model.core.util.EncryptionJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.encryption.key-size=512

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            encryption: 
              key-size: "512"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.encryption.key-size="512" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_ENCRYPTION_KEY_SIZE="512"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.encryption.key-size="512"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.signing-enabled=true

Whether crypto signing operations are enabled.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.signing-enabled=true

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            signing-enabled: "true"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.signing-enabled="true" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_SIGNING_ENABLED="true"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.signing-enabled="true"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.signing.key-size=512

The signing key size.

org.apereo.cas.configuration.model.core.util.SigningJwtCryptoProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.signing.key-size=512

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            signing: 
              key-size: "512"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.signing.key-size="512" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_SIGNING_KEY_SIZE="512"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.signing.key-size="512"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

cas.authn.mfa.duo[0].registration.crypto.strategy-type=ENCRYPT_AND_SIGN

Control the cipher sequence of operations. The accepted values are:

ENCRYPT_AND_SIGN: Encrypt the value first, and then sign.
SIGN_AND_ENCRYPT: Sign the value first, and then encrypt.

org.apereo.cas.configuration.model.core.util.EncryptionOptionalSigningOptionalJwtCryptographyProperties.

_{How can I configure this property?}

Configuration properties can be included and activated using the following strategies.

Note

CAS properties can be specified using the Java configuration property syntax in any and all .properties files:

cas.authn.mfa.duo[0].registration.crypto.strategy-type=ENCRYPT_AND_SIGN

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    mfa: 
      duo[0]: 
        registration: 
          crypto: 
            strategy-type: "ENCRYPT_AND_SIGN"

Note that YAML is very specific about structure and indentation. Be sure to verify the correctness of the final result with your YAML validator of choice.

CAS properties can be passed to the CAS web application as system properties, when the application is launched:

java -Dcas.authn.mfa.duo[0].registration.crypto.strategy-type="ENCRYPT_AND_SIGN" -jar build/libs/cas.war

CAS properties can specified as system environment variables before the CAS web application is launched:

export CAS_AUTHN_MFA_DUO[0]_REGISTRATION_CRYPTO_STRATEGY_TYPE="ENCRYPT_AND_SIGN"

java -jar build/libs/cas.war

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

CAS properties can be passed to the CAS web application as command-line arguments, when the application is launched:

java -jar build/libs/cas.war --cas.authn.mfa.duo[0].registration.crypto.strategy-type="ENCRYPT_AND_SIGN"

The above example assumes that the CAS web application is packaged as cas.war with an embedded server container and can be found in the build/libs directory.

This CAS feature is able to accept signing and encryption crypto keys. In most scenarios if keys are not provided, CAS will auto-generate them. The following instructions apply if you wish to manually and beforehand create the signing and encryption keys.

Note that if you are asked to create a JWK of a certain size for the key, you are to use the following set of commands to generate the token:

wget https://raw.githubusercontent.com/apereo/cas/master/etc/jwk-gen.jar
java -jar jwk-gen.jar -t oct -s [size]

The outcome would be similar to:

{
  "kty": "oct",
  "kid": "...",
  "k": "..."
}

The generated value for k needs to be assigned to the relevant CAS settings. Note that keys generated via the above algorithm are processed by CAS using the Advanced Encryption Standard (AES) algorithm which is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology.

Configuration Metadata

The collection of configuration properties listed in this section are automatically generated from the CAS source and components that contain the actual field definitions, types, descriptions, modules, etc. This metadata may not always be 100% accurate, or could be lacking details and sufficient explanations.

Be Selective

This section is meant as a guide only. Do NOT copy/paste the entire collection of settings into your CAS configuration; rather pick only the properties that you need. Do NOT enable settings unless you are certain of their purpose and do NOT copy settings into your configuration only to keep them as reference. All these ideas lead to upgrade headaches, maintenance nightmares and premature aging.

YAGNI

Note that for nearly ALL use cases, declaring and configuring properties listed here is sufficient. You should NOT have to explicitly massage a CAS XML/Java/etc configuration file to design an authentication handler, create attribute release policies, etc. CAS at runtime will auto-configure all required changes for you. If you are unsure about the meaning of a given CAS setting, do NOT turn it on without hesitation. Review the codebase or better yet, ask questions to clarify the intended behavior.

Naming Convention

Property names can be specified in very relaxed terms. For instance cas.someProperty, cas.some-property, cas.some_property are all valid names. While all forms are accepted by CAS, there are certain components (in CAS and other frameworks used) whose activation at runtime is conditional on a property value, where this property is required to have been specified in CAS configuration using kebab case. This is both true for properties that are owned by CAS as well as those that might be presented to the system via an external library or framework such as Spring Boot, etc.

Note

Settings and properties that are controlled by the CAS platform directly always begin with the prefix cas. All other settings are controlled and provided to CAS via other underlying frameworks and may have their own schemas and syntax. BE CAREFUL with the distinction. Unrecognized properties are rejected by CAS and/or frameworks upon which CAS depends. This means if you somehow misspell a property definition or fail to adhere to the dot-notation syntax and such, your setting is entirely refused by CAS and likely the feature it controls will never be activated in the way you intend.

Validation

Configuration properties are automatically validated on CAS startup to report issues with configuration binding, specially if defined CAS settings cannot be recognized or validated by the configuration schema. Additional validation processes are also handled via Configuration Metadata and property migrations applied automatically on startup by Spring Boot and family.

Indexed Settings

CAS settings able to accept multiple values are typically documented with an index, such as cas.some.setting[0]=value. The index [0] is meant to be incremented by the adopter to allow for distinct multiple configuration blocks.