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Purpose
Utility enabling the addition, deletion and maintenance of certificates in the database.
This package uses subprograms to add and delete X.509 certificates which are used for blockchain table signature verification by the current user.
A typical use case is to attach a digital signature to a row in a blockchain table and be able to verify the digital signature later.
A certificate used to sign one or more rows in blockchain tables and which has since expired should remain in the database until all those rows have been deleted from the blockchain tables.