Create a Standard Policy

1. In the Applications page of the CipherTrust Manager Console, select the Transparent Encryption application.

2. In the sidebar on the Clients page, click Policies.

3. Click Create Policy. CipherTrust Manager displays the Create Policy Wizard.

4. On the General Info page, set the following options:

   Field	Description
   Name	A unique name for the policy. Make sure you use a name that is descriptive and easy to remember so that you can find it quickly when you want to associate it with a GuardPoint. This example uses "Simple-Policy".
   Policy Type	The type of policy you want to create. In this example, we will create a Standard policy.
   Description	A user-defined description to help you identify the policy later. For example: Standard policy for new GuardPoints
   Learn Mode	Learn Mode provides a temporary method for disabling the blocking behavior of CTE/LDT policies. While useful for quality assurance, troubleshooting, and mitigating deployment risk, Learn Mode is not intended to be enabled permanently for a policy in production. This prevents the policy Deny rules from functioning as designed in the policy rule set. Ensure that the policy is properly configured for use in Learn Mode. Any Security Rule that contains a Deny effect must have Apply Key applied as well. This is to prevent data from being written in mixed states, resulting in the loss of access or data corruption. Apply Key will have no effect when combined with a Deny rule unless the policy is in Learn Mode.
   Data Transformation	If you select Standard as the policy type, also select the Data Transformation option to tell CTE that you want to change the current encryption key used on the data in the GuardPoint, or that you want to encrypt clear-text data for the first time. This option is only displayed for Standard policies.

   When you are done, click Next.

5. On the Security Rules page, define the security rules that you want to use.

   CipherTrust Manager automatically adds a default security access rule with an action of key_op and the effects Permit and Apply Key. This rule permits key operations on all resources, without denying user or application access to resources. This allows it to perform a rekey operation whenever the encryption key rotates to a new version.

   To add additional security rules, click Create Security Rule and enter the requested information. For details about adding security rules, see the CipherTrust Manager documentation.

   When you are done, click Next.

6. On the Create Key Rule page, click Create Key Rule and enter the following information:

   Field	Description
   Resource Set	If you want to select a resource set for this key rule, click Select and either choose an existing resource set or create a new one. Resource sets let you specify which directories or files will either be encrypted with the key or will be excluded from encryption with this key.
   Current Key Name	Click Select to choose an existing key or create a new one. If the data has not yet been encrypted, select clear_key. Otherwise select the name of the non-versioned key that is currently being used to encrypt the data. In this example, select clear_key.
   Transformation Key Name	Click Select to choose an existing versioned key or to create a new one. CTE uses the versioned key specified in this field to encrypt the data in the GuardPoint. If the data is currently encrypted, CTE decrypts it using the key specified in the Current Key Name field and re-encrypts it using the key specified in this field.

   When you are done, click Next.

7. On the Data Transformation page, click Create Data Transformation Rule and enter the following information:

   Field	Description
   Resource Set	If you want to select a resource set for this key rule, click Select and either choose an existing resource set or create a new one. Resource sets let you specify which directories or files will either be encrypted with the key or will be excluded from encryption with this key.
   Transformation Key Name	Click Select to choose an existing key or to create a new one. CTE uses the key specified in this field to encrypt the data in the GuardPoint. If the data is currently encrypted, CTE decrypts it using the key specified in the Current Key Name field and re-encrypts it using the key specified in this field. For this example, select the key Simple-Key you created in Create an Encryption Key.

   When you are done, click Next.

8. Click Next.

9. On the confirmation page, review the information for the policy and click Save.

   

Security Rule Ordering for Polices

If you want to enforce restrictions when guarding NFS shares using an LDT or standard policy with a CBC-CS1 key, note the following:

CipherTrust Transparent Encryption embeds and hides LDT and/or IV (initialization vector) attributes in the first 4K of files for NFS shares guarded with an LDT or standard policy with a CBC-CS1 key. Embedding CipherTrust Transparent Encryption attributes increases the actual file size by 4K, and CTE hides that extra 4K when reporting the file size. The exception to this is when a backup/restore process reads/writes such files. This requires embedded attributes to be read/restored by the backup/restore process. In such cases, CipherTrust Transparent Encryption does not hide the 4K attribute space in the file. The backup user/process views the actual file size. Non-backup users/applications view the file size as less than 4K.

If you want a security rule to enforce restricted access for reading file level attributes on such GuardPoints, you must specify the Apply Key effect. Alternatively, you can place the security rule that is enforcing the restricted access after the rule granting read/write access. This avoids application failure if the Apply key effect is not desired. For example, the order of the two rules in a policy that does not hide the user user-name would be:

• Security Rule n

  Rule	Value
  User	<user-name>
  Action	Read-file-attribute and/or Read directory
  Effect	permit

• Security Rule n + 1

  Rule	Value
  User	<user-name>
  Action	all_ops
  Effect	permit, apply-key

Assuming <user-name> is not affiliated with backup/restore operations, <user-name> would view the actual file size which is 4K larger than the size of the user data in the file. The returned file size can result in failure when user-name attempts to read/write files. By reordering rules n and n + 1, <user-name> will view the correct size hiding the 4K attribute space in the target file.

For more information, see Adding Security Rules in the CipherTrust Manager documentation.