Projet 2a

Technical requirements for the handover interfaces for the execution of telecommunications surveillance

4.3.4 Secure email for general and operational information notifications

The OpenPGP secure email method shall be used for the exchange of information between the parties when information confidentiality and integrity is required.

OpenPGP certificates and keys can also be generated for individuals and groups in each organisation (CSP and PTSS). The management of these certificates and keys must follow the requirements described in section 4.3.2.

4.3.4.1 General purpose operational information notifications

Secure email shall be used for the exchange of operational information and notifications between the CSP and the PTSS when the message's confidentiality and intergrity is

necessary.

If a message doesn't need confidentiality it still is recommended to digitally sign the message in order to prove the sender's identity.

The following table provides a non-exhaustive list of operational information notifications that can be exchanged between the parties:

Operational information notifications VD-ÜPF

Contact notification Art. 4

New services notification Art. 16

System update notification Art. 17

Fault notification Art. 22

Table 4-33: Types of operational information notifications

The notification type must be shown in the subject field of the corresponding email.

For the notification content no specific structure is required.

4.3.4.2 Transmission of the cell Identification correlation table

When a mobile CSP does not provide the complete location information in the IRI records as described in section 6.3.9.1 it shall provide the PTSS with a cell identification correlation table (aka Cell-ID table).

This cell identification correlation table contains a list of all cell identifications and their corresponding parameters of the mobile CSP, as defined in section 6.3.9.2. An updated version of this table shall be delivered to the PTSS periodically at least every two weeks.

The table type shall be denoted in the subject field of the corresponding email.

4.4 Telephone and fax

For urgent interception orders and information requests or when no other secure

communication channel is available the PTSS may use the telephone or fax as the

administrative handover interface.

PTSS and CSP shall exchange their contact details as described in the provisions of the VD- ÜPF article 6.