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2.4.9 Encryption & Key Management

This section's intended audience is for those personnel who are responsible for the security of the IoT systems hardware key management and encryption. Guidance is available from the IoTSF [ref 44]¹ regarding Encryption (Part G).

Req No	Requirement	Compliance Class And Applicability	Primary Keyword	Secondary Keyword
2.4.9.1	Intentionally left blank to maintain requirement numbering	-
2.4.9.2	If present, a true random number generator source has been validated for true randomness.	Mandatory for Class 2 and above	System	Hardware
2.4.9.3	There is a process for secure provisioning of security parameters and keys that includes random and individual (unique) generation, distribution, update, revocation and destruction.	Mandatory for Class 2 and above	Business	Process
2.4.9.4	There is a secure method of key insertion that protects keys against copying.	Mandatory for Class 1 and above	System	Software
2.4.9.5	All the product related cryptographic functions have no publicly known unmitigated weaknesses in the algorithms or implementation, for example MD5 and SHA-1 are not used.	Mandatory for Class 1 and above	Business	Process
2.4.9.6	All the product related cryptographic functions are sufficiently secure for the lifecycle of the product, or cryptographic algorithms and primitives should be updateable ("cryptoagility")".	Mandatory for Class 1 and above	Business	Process
2.4.9.7	The product stores all sensitive unencrypted parameters (e.g. keys) in a secure, tamper-resistant location.	Mandatory for Class 1 and above	System	Hardware
2.4.9.8	The cryptographic key chain used for signing production software is different from that used for any other test, development or other software images or support requirement.	Advisory for all classes	System	Software
2.4.9.9	In device manufacture, all asymmetric encryption private keys that are unique to each device are secured. They must be truly randomly internally generated or securely programmed into each device.	Mandatory for Class 2 and above	Business	Process
2.4.9.10	All key lengths are sufficient for the level of assurance required.	Mandatory for Class 2 and above	Business	Policy
2.4.9.11	In systems with many layered sub devices, key management should follow best practice.	Mandatory for all classes	Business	Policy

Enhanced Privacy standard for Anonymous Signatures ISO/IEC20008 [https://www.iso.org/standard/57018.html] ↩