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• The Credential Store (CS) allows sensitive data to be encrypted and stored securely and independently of the application(s) such as YADE and the JobScheduler YADE JITL Jobs that use this data.
• The advantage of using a CS is that the CS stores sensitive information such as credentials in a standardized, secure and fully encrypted database and sensitive authentication information is not exposed in use. Applications access the CS database by using password, encryption-key file or a combination of both.
• The CS requires the use of a standard open database format (.kdb or .kdbx database and the installation of a kdb-compatible user interface such as "KeePass", "KeePass 2" or "KeePass-X" ), which allows the use of graphical and API interfaces across the most relevant operating systems.

Scope

This article is in two parts:

• The first part describes the use of the Credential Store

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• in a relatively simple example file transfer configuration

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• . The configuration described can be used to transfer files from a live server and a download containing the configuration file is available so that users can get a working

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• Credential Store up

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• , running and tested as easily as possible.
• The second part of the article describes Credential Store configuration elements not covered by the example configuration. In addition, the

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• use of the Credential Store in with the JobScheduler YADE JITL jobs is described

This article does not attempt to provide a step-by-step description of file transfer configuration, which is available elsewhere in this article, for example, in the tutorials for YADE and the JobScheduler YADE JITL job.

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example example

Example Description

The example presented in this article illustrates the configuration and use of the Credential Store in as part of a simple file transfer operation that is carried out with the YADE Client- downloading files from an online server to the user's local file system.

The configuration is stored in an XML settings file and includes the elements specifying the Credential store and the file transfer as a whole. This settings file can be used by both the YADE Client and by the YADE JITL jobs that are provided with the JobScheduler.

The example described in this article is based on the simple file transfer example that is described in detail in The file transfer operation is based on the file transfer example described in The YADE Client Command Line Interface - Tutorial 1 - Getting Started article. The This tutorial describes the configuration required to download a number of files from an online server provided by the SOS GmbH and save these files on the user's local file system. Using this server together with the downloaded configuration file means that users can get a working example up and running with a minimum of effort. A simplified version of the configuration used in the tutorial (only specifying transfer by FTP) is available as a download: sos-berlin_demo_2_local.xml.

In the current example, the Credential Store is to store configuration information for the online server - i.e. for the file transfer source. The principle described can be equally well used for the configuration of multiple file transfer source, target, proxy and jump-host servers and for the other file transfer protocols that can be used by the YADE Client.

Note that a YADE Client or JobScheduler Master is required to carry out the example file transfer. Instructions for installing and configuring the YADE Client can be found in the YADE - Tutorials article.

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Instructions for installing and configuring the JobScheduler can be found in the JobScheduler Master - Installation Guide series of articles.

The example configuration file can be downloaded here:

• sos-berlin_demo_2_local.xml.

Configuration Procedure for the Example

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Installing the Credential Store and configuring the KeePass database

KeePass 2 has been used in the current article to implement the Credential Store database, which is just one of the applications available for creating and configuring .kdb or .kdbx databases, has been used in the current article to implement the Credential Store database and is used in the screenshots. The installation and use of KeePass 2 is described on the KeePass Web Site.

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All The full range of Credential Store features such as secure, compliant and password-free use of the Credential Store as well as compatibility with Keepass KeePass .kdb databases require requires the YADE Client in version 1.12.2 or newer.

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Credential Store databases are stored as a file either .kdb or .kdbx  files on the file system.

For the examples described in the current article the following database was configured (on a Windows system):The database included with the download files was configured as follows:

• Path: %USERPROFILE%.\jade_demo\keepass\demo_credcredential_store.kdbx
• Master Password: sos

Note that a Master Key file (not used in the example below) can be generated using the Files/Change Master Key KeePass menu option and then selecting the Show expert options checkboxcan be used to provide further protection for the database, either instead of or in addition to the Master Password. This is described in the Advanced Configuration section of this article below but has not been configured for the download database.

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add_entry add_entry

Adding

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connection information to the Credential Store

Configuration Connection configuration information is stored in the Credential Store as an Entry and Entries can be organized into Groups.

The following information can be stored fields are available for storing information in a CS Entry:

• Title: The identifier for the Entry, this could be a string containing, for example, the host name/server name.
  
• User name: The user identification of a user account who is authenticated for the operation.
• Password: Assigned password for a user account or passphrase for a private key.
• URL: The host name/server name or IP address of the server.
• Notes: This block can be used to specify additional parameters for the file transfer.
  
• File Attachment & Custom String Fields: Files such as PGP or SSH private keys can be stored as attachments.
  
  • A first attachment file is specified as an attachment .
  • Further attachments files are specified using my_custom_field parameters String field parameter / value pairs.
    YADE will retrieve the contents of an attached file at run-time - intermediate or temporary files are not created when reading attachments.
    Note that attachments Attachments and String Fields are specified in the KeePass GUI via the AdvancedEdit Entry tab.

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• Fragments
  
  • ProtocolFragments
    • FTPFragment name="ftp_demo_sos-berlin_cs"
      
      • ....
      • CredentialStoreFragmentRef ref ="ftp_demo"
  • CredentialStoreFragments
    • CredentialStoreFragment name ="ftp_demo"
      
      • CSFile file path  %USERPROFILE%\jade_demo....
      • CSAuthentication
        
        • PasswordAuthentication
          • ..etc.
      • CSEntryPath
• Profiles
  • ..etc.

Addressing the information in the Credential Store

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Configuration in the XML Editor

The parts of the XML configuration relevant to the parts of the XML configuration relevant to the use of the Credential Store are shown in the following screenshot of the configuration for the current example, with parameter values highlighted according to their function:

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The Transfer Target Directory

As can be seen in the The screenshot above , the shows a CopyTarget.Directory parameter is by default set for a Windows environment and set to:

• ${USERPROFILE}\jade_demo\transfer_receive

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Note that the log files neither indicate that a credential store has been use for the transfer nor reveal any passwords. 

Advanced Configuration

Key File Authentication

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jitl jitl

Using the Credential Store

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with the JobScheduler JITL YADE jobs

Settings XML files such as the sos-berlin_demo_2_local_cs.xml file which was used to configure the example described above can be used for JobScheduler JITL jobs. Here, only two parameters are needed to run the YADE JITL job (settings and profile) as can be seen in the next screenshot.

Note that we recommend that these parameters are set manually using the New button shown in the screenshot below and not using the Wizard button.

Image Added

Note also that while the YADE Client runs under the current user account, the JobScheduler generally runs under a predefined account. This means that while paths in the configuration file can use parameters such as %USERPROFILE% when the configuration file is being used with the YADE Client, it is generally necessary to use absolute paths when the configuration file is to be used for JITL jobs.

Advanced Configuration

Key File Authentication

Key file authentication can be used for the Credential Store either alone or together with the password authentication described in the example above.

This option allows the the Credential Store to be used completely securely, yet without passwords, if required.

Key file authentication has to be configured for the Credential Store and in the XML settings file.

Configuring key file authentication in the Credential Store

KeePass provides a Create Composite Master Key function that is reached with the Files / Master Key... menu item. screen

The Create Composite Master Key function is shown in the following screenshot  (Note that the Show expert options checkbox has to be selected first.):

Note also that the Master Password checkbox should not be selected if key file authentication is to be used without a master password.

Image Added

The entropy of the key generated can be increased as part of the key creation procedure. This is done as part of the key generation procedure in the interface shown in the next screenshot.

Image Added

For the purpose of this article the key has been saved in the jade_demo folder used for the download example.

The next section describes the configuration of the XML settings file to include a reference to this file.

Configuring key file authentication in the XML settings file

Key file authentication is configured in the XML settings file by specifying a KeyFileAuthentication element as a child of the CSAuthentication element in the Credential Store fragment.

The key file element can be added either instead of or alongside a password authentication element as required.

This is shown in the following list:

• CredentialStoreFragments
  • CredentialStoreFragment name ="ftp_demo"
    
    • CSFile file path%USERPROFILE% \jade_demo....
    • CSAuthentication
      
      • PasswordAuthentication
        • .CSPassword myPassword
      • KeyFileAuthentication
        • CSKeyFile %USERPROFILE%\jade_demo\cs_key_file\demo_credential_store.key
          
    • CSEntryPath
      

Connection authentication key files

The Credential Store can be used to store RSA and similar connection authentication key files. These are stored in the Credential Store database as attachments.

Configuring authentication key files in the Credential Store

Attachments are added to the Credential Store in KeePass in the File Attachments section of the Advanced tab as shown in the screenshot below. Note that only one attachment can be added for each Credential Store Entry :

Image Added

Configuring authentication key files in the XML settings file

A first attachment for, for example, SSH would be configured in the XML settings file by specifying an AuthenticationFile element in the SSHAuthentication element.

The key file element can be added either instead of or alongside a password authentication element as required.

This following list shows the configured of the SFTP Fragment required to carry out the download from the test.sos-berlin.com SFTP/FTP server that was used for the simple example described above: The AuthenticationFile element that specifies the Attachment in the Credential Store Entry is specified in the same way as the Hostname and other elements described in the example above.

• SFTPFragment name ="sftp_demo_sos-berlin_cs"
  • BasicConnection
    • Hostname cs://demo/sftp/demo_on_test.sos-berlin.com@attachment
  • SSHAuthentication
    
    • Account
    • AuthenticationMethodPublicKey
      • AuthenticationFile cs://demo/sftp/demo_on_test.sos-berlin.com@attachment
      • Passphrase myPassPhrase
        
    • CredentialStoreFragmentRefref="ftp_demo"

Note that this list also shows the use of a Passphrase element for the AuthenticationFile element. This is not required for authentication with the test.sos-berlin.com SFTP server but is provided as an illustration. 

Passphrase elements are stored in the Credential Store as Notes.

Custom Parameters

Custom parameters allow XML ProtocolFragment elements such as StrictHostkeyChecking that do not belong to the standard keepass.GUI fields such as URL to be specified.

Configuring custom parameters in the Credential Store

Custom parameters are set as string name / value pairs. In the KeePass 2 GUI these are set by opening the Edit window for an Entry using the Add function in the String Fields section of the Advanced tab. .This is shown in the next screenshot:

Image Added

Configuring custom parameters in the XML settings file

Custom parameters are configured in the XML settings file by ..

• SFTPFragment name ="sftp_tokyo_japan.sos-berlin.com"
  • BasicConnection
  • SSHAuthentication
  • CredentialStoreFragmentRef ref="demo_credential_store"
  • StrictHostkeyChecking "false"

Note that custom parameters can only be used to set parameters in ProtocolFragments - they cannot be used to set ProfileFragments parameters such as Recursive.

See Also

• YADE User Manual - Credential Store

References

Support of the features described in this article is subject to the following issues:

Issues implemented with Release 1.12.1:

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-462

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-464

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-481

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-482

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-485

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-487

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-491

Issues implemented with Release 1.12.2:

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-493

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-498

• Jira
  server SOS JIRA columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 6dc67751-9d67-34cd-985b-194a8cdc9602 key YADE-499

This option allows the the Credential Store to be used completely securely, yet without passwords, if required.

Key file authentication has to be configured for the Credential Store and in the XML settings file.

Configuring key file authentication for the Credential Store

KeePass provides a Create Composite Master Key function that is reached with the Files / Master Key... menu item. screen

The Create Composite Master Key function is shown in the following screenshot  (Note that the Show expert options checkbox has to be selected first.):

Note also that the Master Password checkbox should not be selected if key file authentication is to be used without a master password.

Image Removed

The entropy of the key generated can be increased as part of the key creation procedure. This is done as part of the key generation procedure in the interface shown in the next screenshot.

Image Removed

For the purpose of this article the key has been saved in the jade_demo folder used for the download example.

The next section describes the configuration of the XML settings file to include a reference to this file.

Configuring key file authentication in the XML settings file

Key file authentication is configured in the XML settings file by specifying a KeyFileAuthentication element as a child of the CSAuthentication element in the Credential Store fragment.

The key file element can be added either instead of or alongside a password authentication element as required.

This is shown in the following list:

• CredentialStoreFragments
  • CredentialStoreFragment name ="ftp_demo"
    
    • CSFile file path  %USERPROFILE%\jade_demo....
    • CSAuthentication
      
      • PasswordAuthentication
        • .CSPassword password
      • KeyFileAuthentication
        • CSKeyFile path to key file ....
    • CSEntryPath demo/ftp/....


See Also:

• YADE User Manual - Credential Store