What cryptographic technique involves adding random data to a message before hashing to make it more resistant to rainbow table attacks?
Key stretching
Blockchain
Salting
Digital signatures
Salting is the correct answer because it involves adding random data (salt) to a message before hashing. This makes the resulting hash value unique, even for identical messages, which helps prevent rainbow table attacks. Rainbow tables are precomputed tables of hash values that can be used to quickly reverse hashes and obtain the original message. By adding a unique salt to each message before hashing, the resulting hash values will be different, rendering rainbow tables ineffective.
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