5 Security and privacy
This chapter covers
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Understanding basics of cryptography and public-private key pairs
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Managing digital identity for decentralized participants using public-key cryptography
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Using cryptography and hashing for the privacy and security of blockchain data
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Illustrating security and privacy concepts using blind auction smart contract
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Deploying smart contracts on a public blockchain
Security and privacy are concerns in any system open to public access, from public buildings and highways to hardware and software systems. But they are especially serious concerns in blockchain-based systems. These systems operate beyond traditional boundaries of trust, such as the one established by a medical provider for its patients ...
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