id: "SA-09(06)" title: "Organization-controlled Cryptographic Keys" family: "SA" family_name: "System and Services Acquisition" sort_id: "sa-09.06" priority: "P1" implementation_level: "organization" parent: "SA-09" enhancement: True
Statement
Maintain exclusive control of cryptographic keys for encrypted material stored or transmitted through an external system.
Guidance
Maintaining exclusive control of cryptographic keys in an external system prevents decryption of organizational data by external system staff. Organizational control of cryptographic keys can be implemented by encrypting and decrypting data inside the organization as data is sent to and received from the external system or by employing a component that permits encryption and decryption functions to be local to the external system but allows exclusive organizational access to the encryption keys.
Assessment Objective
exclusive control of cryptographic keys is maintained for encrypted material stored or transmitted through an external system.
System and services acquisition policy
procedures addressing external system services
acquisition contracts for the system, system component, or system service
solicitation documentation
acquisition documentation
service level agreements
procedures addressing organization-controlled cryptographic key management
organizational security requirements or conditions for external providers
system security plan
supply chain risk management plan
other relevant documents or records
Organizational personnel with system and service acquisition responsibilities
organizational personnel with information security responsibilities
organization personnel with cryptographic key management responsibilities
external providers of system services
organizational personnel with supply chain risk management responsibilities
Organizational processes for cryptographic key management
mechanisms for supporting and implementing the management of organization-controlled cryptographic keys