# Encryption in Transit for AMB Access Hyperledger Fabric
Encryption in Transit

The Hyperledger Fabric certificate authority (CA) in each membership provides a TLS certificate authority to secure Hyperledger Fabric communication channels in the Amazon Managed Blockchain (AMB) network. For more information, see the [Fabric CA's User Guide](https://hyperledger-fabric-ca.readthedocs.io/en/release-1.4/users-guide.html) in Hyperledger Fabric documentation.