Adding COM.UserInterface

  <td style="border: none; vertical-align: top;">IEEE</td>

  <td style="border: none; vertical-align: top;">Institute of Electrical and Electronics Engineers</td>

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  <td style="border: none; vertical-align: top;">HMI</td>

  <td style="border: none; vertical-align: top;">Human-Machine Interface</td>

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  <td style="border: none; vertical-align: top;">IT</td>

  <td style="border: none; vertical-align: top;">Information Technology</td>

- **EC.KMS** - Framework and services that provide for the generation, production, establishment, control, accounting, and destruction of cryptographic keys. 

- **EC.UserDirectory** - A directory server that centrally stores, organizes, and provides access to user, group, and resource information (e.g., authentication credentials, contact details) for networked systems and applications.

### 4.3.4 Connectivity aspects

For the logical operation environment, the following digital communication types are addressed for any architectural component of the product.

- **COM.Public** - ingoing/outgoing communication from/to public networks

- **COM.Adjacent** - ingoing/outgoing communication from/to private networks which does not require physical proximity to the communication partner

- **COM.Local** - ingoing/outgoing communication which requires physical proximity to but not physical presence at the communication partner

- **COM.Public** - ingoing/outgoing communication from/to public networks.

- **COM.Adjacent** - ingoing/outgoing communication from/to private networks which does not require physical proximity to the communication partner/

- **COM.Local** - ingoing/outgoing communication which requires physical proximity to but not physical presence at the communication partner.

- **COM.UserInterface** - physical interface provided to the authorized user, allowing direct acces to the product HMI.

## 4.4 Distribution of Security Functions