Learn Cryptography | Part 5 - Hash Functions

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Cryptosense CEO Dr. Graham Steel was formerly an academic researcher before founding Cryptosense in 2013. His cryptography expertise is the basis for the company's 'Analyzer' technology which allows customers to protect themselves against losing sensitive data.

[@floatyguy1]

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[@jonsmith1383]

Must you know the key to extend Sha2 to a valid signature or not?