Amazon Managed Blockchain now supports customer-managed customer master keys

Amazon Managed Blockchain now supports customer-managed customer master keys (CMKs) for Hyperledger Fabric networks. Customers can encrypt new member-specific resources using their own CMK. These CMKs are declared in AWS Key Management Service (KMS) and used by Amazon Managed Blockchain. Each member can use their own CMK and manage it according to their security policy.

Source:: Amazon AWS