6.2.3.2 Metadata for Related Cryptographic Information
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Title
Metadata for Related Cryptographic Information
Control
Cryptographic information other than keying material may need metadata to “point to” the keying material that was used to provide the cryptographic protection for the information. The metadata may also contain other related cryptographic information. When metadata is used, the metadata should accompany the information (i.e., the metadata is typically stored or transmitted with the information) and contain some subset of the following: 1. The type of information (e.g., domain parameters); 2. The source of the information (e.g., the entity that sent the information); 3. The application for using the key (e.g., purchasing or email); 4. Other associated cryptographic information (e.g., a key, MAC or hash value); and 5. Any other information (e.g., who has access rights).