REVOKE (key)

Revokes privileges on a cryptographic key from a user or role.

To grant privileges on a key, see GRANT (key).

Syntax

REVOKE [ GRANT OPTION FOR ] { privilege[,...] | ALL [ PRIVILEGES ] } ON KEY
    key_name[,...]
    FROM user[,...]

Parameters

`GRANT OPTION FOR`

Revokes the grant option for the specified privileges. Current privileges for grantees remain unaffected. If you omit this clause, Vertica revokes both the grant option and current privileges.

privilege

A privilege, one of the following:

• USAGE: Allows a user to perform the following actions:

  • View the contents of the key.

  • Create or sign certificates using the key.

  USAGE on the key also gives implicit USAGE privileges on a certificate that uses it as its private key. Users can also get these privileges from ownership of the key or certificate. USAGE privileges on a certificate allow a user to perform the following actions:

  • View the contents of the certificate.

  • Add (with CREATE or ALTER) the certificate to a TLS Configuration.

  • Reuse the CA certificate when importing certificates signed by it. For example, if a user imports a chain of certificates A > B > C and have USAGE on B, the database reuses B (as opposed to creating a duplicate of B).

  • Specify that the CA certificate signed an imported certificate. For example, if certificate B signed certificate C, USAGE on B allows a user to import C and specify that it was SIGNED BY B.

• DROP

• ALTER: Allows a user to see the key and its associated certificates in their respective system tables, but not their contents.

key_name

The target key.

user

Who is granted privileges, one of the following:

• user-name
• role

• PUBLIC: Default role of all users

Privileges

Non-superuser:

• Owner

• Privileges grantee given the option (WITH GRANT OPTION) of granting privileges to other users or roles.

Examples

The following example revokes DROP privileges on a key (and, by extension, its associated certificate) from a user:

=> REVOKE USAGE ON KEY new_key FROM u1;
REVOKE PRIVILEGE