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### 3.6 Dirmngr’s Assuan Protocol

Assuan is the IPC protocol used to access dirmngr. This is a description of the commands implemented by dirmngr.

- Return the certificate(s) found
- Validate a certificate using a CRL or OCSP
- Validate a certificate using a CRL
- Validate a certificate using OCSP
- Put a certificate into the internal cache
- Validate a certificate for debugging