Question: (a)How does cryptography protect the security and privacy in blockchain transactions from hackers? (Using the concepts of private key, public key, hash, digital signatures) (b)

(a)How does cryptography protect the security and privacy in blockchain transactions from hackers? (Using the concepts of private key, public key, hash, digital signatures)

(b) You want to send a contract C to Company X. Is it safe (i.e. without the possibility of being hacked) if you send it (i.e. Contract C) with the hash value of Contract C to Company X in Blockchain? Substantiate your answer. (c) Contract C is a long document. Is it safe (i.e. without the possibility of being hacked) and feasible if you send a contract C with the senders digital signature to Company X in Blockchain? Please explain. (d) If the answer to part (c) is no, suggest a better solution.

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