The policy on the use of cryptographic controls must take account of jurisdictions that require cryptography for particular categories of personal data such as health data or national identifiers, the organization must tell the customer in what circumstances it applies cryptography to the personal data it processes, and must tell the customer about any capability it offers to help the customer apply cryptography of its own; key management applies as the base guidance requires.
ISO 27701:2019 6.7.1 is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of ISO 27701:2019 your existing evidence covers. Hold SOC 2 and 58 of 108 ISO 27701:2019 controls already carry evidence.
Each report names every control your existing framework evidences, every one it does not, the reasoning behind each claim, and the claims that were argued against and rejected. 289 were rejected on the SOC 2 pair alone.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.