What is used with a HMAC and a secret key?

Related questions

1. How many possible keys are available in the 18 bit system?
2. What is Keyspace NoSQL?
3. Is Cassandra a columnar database?
4. What is a column in Cassandra?
5. What is the primary language for communicating with the Apache Cassandra ™ database?
6. What is replication factor in Kafka?
7. What is Cqlsh?
8. What is Tableplus?
9. Why Cassandra is NoSQL?
10. Is Cassandra schema free?

Tags

1. #sha256
2. #stands
3. #authenticated
4. #message
5. #specified
6. #keyed
7. #hashing
8. #running
9. #function
10. #secret
11. #authentication
12. #shared
13. #cryptographic
14. #obtained