pkcsslotd - shared memory manager for opencryptoki
The pkcsslotd daemon manages PKCS#11 objects between PKCS#11-enabled
applications. When 2 or more processes are accessing the same
cryptographic token, the daemon is notified and updates each
application when the token’s objects change.
Only one instance of the pkcsslotd daemon should be running on any
given host. If a prior instance of pkcsslotd did not shut down cleanly,
then it may leave an allocated shared memory segment on the system. The
allocated memory segment can be identified by its key and can be safely
removed once the daemon is stopped with the ipcrm command, such as:
ipcrm -M 0x6202AB38
In order to prevent a denial of service against the daemon, the shared
memory segment is created with group ownership by the "pkcs11" group.
Any application that requires access to a pkcs11 token must be run by a
user who’s a member of the "pkcs11" group.