The following Entrust solutions support a Hardware Security Module (HSM) for cryptographic operations.

• Certificate Authority (CA)
• Timestamping Authority (TSA)
• Validation Authority (EVA)

When integrating a Hardware Security Module (HSM):

• You do not need to install the client drivers because the solution already includes this software. However, these client drivers cannot be updated.
• You cannot use HSMs from different providers simultaneously, meaning that nShield and Thales HSMs cannot coexist within the same deployment.
• You can only use 1/N card sets. A card set of, for example, 2/5 cards is not supported.
• Changing the settings of an Entrust nShield HSM requires the steps described in Administrating nShield HSM integration.

 See the following table for supported versions.