name: SAD
full_form: Security Association Database (sometimes also referred to as SADB)
context: then the message is discarded. d) If a TCAPsec message is received and the SPD indicates that TCAPsec is required, then the process continues at step 8. 8. The receiving SS7-SEG checks its SAD to retrieve the relevant SA information for processing of the TCAPsec message: a) If the received SPI does not point to a valid SA, then the message is discarded. b) If the received SPI points to a valid SA, and if the Source and Destination Network Id, which are retrieved via the SPI, align with those from SCCP layer, then the SS7-SEG retrieves the protection mode from the SPD and the cryptographic information (keys, algorithms) from the SAD and the process continues at step 9, otherwise the message is discarded. 9. Freshness of the protected message is checked by ensuring the Time Variant Parameter (TVP) is in an acceptable window. Integrity and encryption mechanisms are applied to the message according to the identified protection level, by using the information in the SA (keys, algorithms).
description: The Security Association Database (SAD) is a network function responsible for storing and retrieving security association information, including cryptographic keys and algorithms, to facilitate secure communication within the network.
explanation: The context describes SAD's role in managing security associations and providing SA information for secure communication. This functionality aligns with the definition of a Network Function that processes and manages data within a telecommunications infrastructure.
section_title: Annex B (normative):
  TCAPsec message flows
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biotag_Description: O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O