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.

OpenID Connect - Client-Initiated Backchannel Authentication (CIBA)

Client-Initiated Backchannel Authentication (CIBA) is a new authentication flow in which relying parties, that can obtain a valid identifier for the user they want to authenticate, will be able to initiate an interaction flow to authenticate their users without having end-user interaction from the consumption device. The flow involves direct communication from the Client to CAS without redirect through the user’s browser.

The Client shall make an “HTTP POST” request to the Backchannel Authentication Endpoint to ask for end-user authentication.
CAS will respond immediately with a unique identifier that identifies that authentication while it tries to authenticate the user in the background.
The Client will receive the ID Token, Access Token, and optionally Refresh Token through either the Poll, Ping, or Push modes.

Please study the specification to learn more.

Configuration

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.oidc.ciba.verification.mail.attribute-name=

Principal attribute names that indicates the destination email address for this message. The attributes must already be resolved and available to the CAS principal. When multiple attributes are specified, each attribute is then examined against the available CAS principal to locate the email address value, which may result in multiple emails being sent.

This setting supports the Spring Expression Language.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.attribute-name=...

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: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            attribute-name: "..."

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.oidc.ciba.verification.mail.attribute-name="..." -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_OIDC_CIBA_VERIFICATION_MAIL_ATTRIBUTE_NAME="..."

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.oidc.ciba.verification.mail.attribute-name="..."

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.oidc.ciba.verification.mail.from=

Email from address.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.from=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            from: "..."

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.oidc.ciba.verification.mail.from="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_FROM="..."

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.oidc.ciba.verification.mail.from="..."

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.oidc.ciba.verification.mail.subject=

Email subject line.

The subject can either be defined verbaitm, or it may point to a message key in the language bundle using the syntax #{subject-language-key}. This key should point to a valid message defined in the appropriate language bundle that is then picked up via the active locale. In case where the language code cannot resolve the real subject, a default subject value would be used.

This setting supports the Spring Expression Language.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.subject=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            subject: "..."

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.oidc.ciba.verification.mail.subject="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_SUBJECT="..."

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.oidc.ciba.verification.mail.subject="..."

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.oidc.ciba.verification.mail.bcc=

Email BCC address, if any.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.bcc=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            bcc: "..."

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.oidc.ciba.verification.mail.bcc="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_BCC="..."

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.oidc.ciba.verification.mail.bcc="..."

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.oidc.ciba.verification.mail.cc=

Email CC address, if any.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.cc=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            cc: "..."

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.oidc.ciba.verification.mail.cc="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_CC="..."

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.oidc.ciba.verification.mail.cc="..."

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.oidc.ciba.verification.mail.html=false

Indicate whether the message body should be evaluated as HTML text. The application of this setting depends on the email provider implementation and may not be fully supported everywhere. This is typically relevant for the default org.springframework.mail.javamail.JavaMailSender.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.html=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            html: "..."

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.oidc.ciba.verification.mail.html="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_HTML="..."

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.oidc.ciba.verification.mail.html="..."

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.oidc.ciba.verification.mail.priority=1

Set the priority (X-Priority header) of the message. Values: 1 (Highest), 2 (High), 3 (Normal), 4 (Low), 5 (Lowest). The application of this setting depends on the email provider implementation and may not be fully supported everywhere. This is typically relevant for the default org.springframework.mail.javamail.JavaMailSender.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.priority=1

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            priority: "1"

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.oidc.ciba.verification.mail.priority="1" -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_PRIORITY="1"

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.oidc.ciba.verification.mail.priority="1"

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.oidc.ciba.verification.mail.reply-to=

Email Reply-To address, if any.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.reply-to=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            reply-to: "..."

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.oidc.ciba.verification.mail.reply-to="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_REPLY_TO="..."

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.oidc.ciba.verification.mail.reply-to="..."

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.oidc.ciba.verification.mail.text=

Email message body. Could be plain text or a reference to an external file that would serve as a template.

If specified as a path to an external file with an extension .gtemplate, then the email message body would be processed using the Groovy template engine. The template engine uses JSP style <% %> script and <%= %> expression syntax or GString style expressions. The variable out is bound to the writer that the template is being written to.

If using plain text, the contents are processed for string subtitution candidates using named variables. For example, you may refer to an expected url variable in the email text via ${url}, or use ${token} to locate the token variable. In certain cases, additional parameters are passed to the email body processor that might include authentication and/or principal attributes, the available locale, client http information, etc.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.text=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            text: "..."

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.oidc.ciba.verification.mail.text="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_TEXT="..."

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.oidc.ciba.verification.mail.text="..."

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.oidc.ciba.verification.mail.validate-addresses=false

Set whether to validate all addresses which get passed to this helper. The application of this setting depends on the email provider implementation and may not be fully supported everywhere. This is typically relevant for the default org.springframework.mail.javamail.JavaMailSender.

org.apereo.cas.configuration.model.support.email.EmailProperties.

_{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.oidc.ciba.verification.mail.validate-addresses=...

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          mail: 
            validate-addresses: "..."

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.oidc.ciba.verification.mail.validate-addresses="..." -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_MAIL_VALIDATE_ADDRESSES="..."

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.oidc.ciba.verification.mail.validate-addresses="..."

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.oidc.ciba.max-time-to-live-in-seconds=PT5M

Hard timeout to kill the id token and expire it.

This settings supports the java.time.Duration syntax ^[?].

org.apereo.cas.configuration.model.support.oidc.OidcCibaProperties.

_{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.oidc.ciba.max-time-to-live-in-seconds=PT5M

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        max-time-to-live-in-seconds: "PT5M"

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.oidc.ciba.max-time-to-live-in-seconds="PT5M" -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_MAX_TIME_TO_LIVE_IN_SECONDS="PT5M"

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.oidc.ciba.max-time-to-live-in-seconds="PT5M"

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.oidc.ciba.storage-name=oidcCibaRequestsCache

The storage object name used and created by CAS to hold CIBA requests in the backing ticket registry implementation.

org.apereo.cas.configuration.model.support.oidc.OidcCibaProperties.

_{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.oidc.ciba.storage-name=oidcCibaRequestsCache

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        storage-name: "oidcCibaRequestsCache"

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.oidc.ciba.storage-name="oidcCibaRequestsCache" -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_STORAGE_NAME="oidcCibaRequestsCache"

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.oidc.ciba.storage-name="oidcCibaRequestsCache"

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.oidc.ciba.verification.delay=PT5S

Number of seconds to pause and wait before sending out the verification notification to the user. Essentially, this controls how long the user must wait before the notification message is received via email, etc.

This settings supports the java.time.Duration syntax ^[?].

org.apereo.cas.configuration.model.support.oidc.OidcCibaVerificationProperties.

_{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.oidc.ciba.verification.delay=PT5S

CAS properties can be specified using the YAML syntax:

cas: 
  authn: 
    oidc: 
      ciba: 
        verification: 
          delay: "PT5S"

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.oidc.ciba.verification.delay="PT5S" -jar build/libs/cas.war

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

export CAS_AUTHN_OIDC_CIBA_VERIFICATION_DELAY="PT5S"

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.oidc.ciba.verification.delay="PT5S"

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.

# Email BCC address, if any.
# cas.authn.oidc.ciba.verification.mail.bcc=

# Email CC address, if any.
# cas.authn.oidc.ciba.verification.mail.cc=

# Indicate whether the message body should be evaluated as HTML text.
# cas.authn.oidc.ciba.verification.mail.html=false

# Set the priority ({@code X-Priority} header) of the message.
# cas.authn.oidc.ciba.verification.mail.priority=1

# Email Reply-To address, if any.
# cas.authn.oidc.ciba.verification.mail.reply-to=

# Email message body.
# cas.authn.oidc.ciba.verification.mail.text=

# Set whether to validate all addresses which get passed to this helper.
# cas.authn.oidc.ciba.verification.mail.validate-addresses=false

# Hard timeout to kill the id token and expire it.
# cas.authn.oidc.ciba.max-time-to-live-in-seconds=PT5M

# The storage object name used and created by CAS to hold CIBA requests in the backing ticket registry implementation.
# cas.authn.oidc.ciba.storage-name=oidcCibaRequestsCache

# Number of seconds to pause and wait before sending out the verification notification to the user.
# cas.authn.oidc.ciba.verification.delay=PT5S

The following settings may also need to be defined to describe the mail server settings:

spring.mail.default-encoding=UTF-8

Default MimeMessage encoding.

_{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:

spring.mail.default-encoding=UTF-8

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    default-encoding: "UTF-8"

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 -Dspring.mail.default-encoding="UTF-8" -jar build/libs/cas.war

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

export SPRING_MAIL_DEFAULT_ENCODING="UTF-8"

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 --spring.mail.default-encoding="UTF-8"

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.

spring.mail.host=

SMTP server host. For instance, 'smtp.example.com'.

_{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:

spring.mail.host=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    host: "..."

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 -Dspring.mail.host="..." -jar build/libs/cas.war

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

export SPRING_MAIL_HOST="..."

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 --spring.mail.host="..."

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.

spring.mail.jndi-name=

Session JNDI name. When set, takes precedence over other Session settings.

_{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:

spring.mail.jndi-name=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    jndi-name: "..."

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 -Dspring.mail.jndi-name="..." -jar build/libs/cas.war

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

export SPRING_MAIL_JNDI_NAME="..."

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 --spring.mail.jndi-name="..."

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.

spring.mail.password=

_{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:

spring.mail.password=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    password: "..."

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 -Dspring.mail.password="..." -jar build/libs/cas.war

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

export SPRING_MAIL_PASSWORD="..."

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 --spring.mail.password="..."

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.

spring.mail.port=

SMTP server port.

_{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:

spring.mail.port=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    port: "..."

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 -Dspring.mail.port="..." -jar build/libs/cas.war

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

export SPRING_MAIL_PORT="..."

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 --spring.mail.port="..."

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.

spring.mail.properties=

Additional JavaMail Session properties.

_{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:

spring.mail.properties=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    properties: "..."

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 -Dspring.mail.properties="..." -jar build/libs/cas.war

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

export SPRING_MAIL_PROPERTIES="..."

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 --spring.mail.properties="..."

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.

spring.mail.protocol=smtp

Protocol used by the SMTP server.

_{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:

spring.mail.protocol=smtp

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    protocol: "smtp"

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 -Dspring.mail.protocol="smtp" -jar build/libs/cas.war

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

export SPRING_MAIL_PROTOCOL="smtp"

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 --spring.mail.protocol="smtp"

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.

spring.mail.ssl.bundle=

SSL bundle name. If set, 'mail.(protocol).ssl.socketFactory' property is set to an SSLSocketFactory obtained from the corresponding SSL bundle.

Note that the STARTTLS command can use the corresponding SSLSocketFactory, even if the 'mail.(protocol).ssl.enable' property is not set.

_{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:

spring.mail.ssl.bundle=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    ssl: 
      bundle: "..."

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 -Dspring.mail.ssl.bundle="..." -jar build/libs/cas.war

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

export SPRING_MAIL_SSL_BUNDLE="..."

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 --spring.mail.ssl.bundle="..."

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.

spring.mail.ssl.enabled=false

Whether to enable SSL support. If enabled, 'mail.(protocol).ssl.enable' property is set to 'true'.

_{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:

spring.mail.ssl.enabled=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    ssl: 
      enabled: "..."

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 -Dspring.mail.ssl.enabled="..." -jar build/libs/cas.war

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

export SPRING_MAIL_SSL_ENABLED="..."

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 --spring.mail.ssl.enabled="..."

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.

spring.mail.test-connection=false

Whether to test that the mail server is available on startup.

_{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:

spring.mail.test-connection=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    test-connection: "..."

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 -Dspring.mail.test-connection="..." -jar build/libs/cas.war

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

export SPRING_MAIL_TEST_CONNECTION="..."

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 --spring.mail.test-connection="..."

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.

spring.mail.username=

_{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:

spring.mail.username=...

CAS properties can be specified using the YAML syntax:

spring: 
  mail: 
    username: "..."

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 -Dspring.mail.username="..." -jar build/libs/cas.war

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

export SPRING_MAIL_USERNAME="..."

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 --spring.mail.username="..."

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.

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.

Applications

Applications that wish to take advantage of CIBA can be registered with CAS:

{
  "@class": "org.apereo.cas.services.OidcRegisteredService",
  "clientId": "client-id",
  "clientSecret": "secret",
  "serviceId": "^https://app.example.org/oidc",
  "name": "MyApplication",
  "id": 1,
  "supportedGrantTypes": [ "java.util.HashSet", [ "urn:openid:params:grant-type:ciba" ] ],
  "backchannelTokenDeliveryMode": "push",
  "backchannelClientNotificationEndpoint": "https://app.example.org/notify",
  "backchannelAuthenticationRequestSigningAlg": "",
  "backchannelUserCodeParameterSupported": false
}

Delivery Modes

The Client will receive the ID Token, Access Token, and optionally Refresh Token through either the poll, ping, or push modes. This choice MUST be established when the relying party is registered with CAS.

Poll Mode

When configured in Poll mode, the Client will poll the token endpoint to get a response with the tokens. That is, the authentication result is retrieved by the Client by polling the CAS token endpoint using the CIBA grant type.

Ping Mode

When configured in Ping mode, CAS will send a request to a callback URI previously registered by the Client with the unique identifier returned from the Backchannel Authentication Endpoint. Upon receipt of the notification, the Client makes a request to the token endpoint to obtain the tokens.

Push Mode

When configured in Push mode, CAS will send a POST request with the tokens to a callback URI previously registered by the Client.