Create a cryptographic specification

After you create a cryptographic module, create a cryptographic specification to define the module algorithms.

Avant de commencer

Role required: sn_kmf.cryptographic_manager

Procédure

1. Navigate to Key Management > Cryptographic Modules > All.
2. Select the cryptographic module for definition to open the configuration options.
3. On the Crypto Specifications tab, select New.

   

4. Complete the Algorithm Definition form.
   See Cryptographic specification overview for details.

   

   The algorithm definition screen opens. Select options for the key generation. Repeat this step to generate multiple keys for the selected crypto module.

   Tableau 1. Algorithm Definition fields

   Field
   Crypto module	Read only. Name of the selected cryptographic module displays.
   Crypto purpose	Select the purpose of this module. For example, you might use it for data encryption, signature generation, or key wrapping. The available algorithms adjust based on the selected crypto purpose. See Cryptographic specification overview for details.
   Algorithm	Type of algorithm used to accomplish the crypto purpose. The algorithm also controls the key origin. Adjusts automatically based on the selected crypto purpose. Cryptographic specification overview for details.
   Operation mode	This field may display based on the selected crypto purpose.
   Size	Select the bit size.
   Hash	This field becomes available based on the algorithm selected.
   Equality preserving	Enables non-deterministic encryption. This option appears when you select Symmetric Data Encryption/Decryption with AES and in Cipher Block Chaining (CBC) mode. Selecting this option means that if the same data is encrypted again the encoded data is the same each time. Non-deterministic encryption doesn’t support filtering a list of encrypted data using equality comparison operators.
   Integrity	GCM operation mode provides Integrity.

5. Select Next.
   The crypto specification is listed on the Key Lifecycle table based on the algorithms selected.

Que faire ensuite

Perform one of the following operations:

• Select an entry in the Key Lifecycle table to define key lifecycle behavior. See Configure key lifecycle states for details to complete the lifecycle definition for the key.
• Select Next to create a cryptographic key. See one of the following tasks for key generation:
  • Generate a ServiceNow cryptographic key.
  • Configure properties for customer-supplied keys.
  • Import the wrapping / unwrapping key pair.