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Homeweb3.0What are the main aspects of blockchain cryptography technology?

Blockchain cryptography technology mainly involves six aspects: 1. Cryptographical hash function; 2. Digital signature; 3. Public key infrastructure (PKI); 4. Asymmetric encryption; 5. Symmetric encryption; 6. Zero-knowledge proof . Together, these technologies provide a strong security foundation for the blockchain, ensuring data integrity, transaction security and user identity authenticity.

What are the main aspects of blockchain cryptography technology?

What are the main aspects of cryptographic technology in blockchain?

Blockchain is a distributed ledger technology, and its security is based on the widespread application of cryptographic technology. It mainly involves the following aspects:

1. Cryptographic hash function

  • One-way function, input data of any length and output a fixed-length hash value (summary).
  • Collision irresistibility, that is, it is difficult to find two different inputs that produce the same hash value.
  • For verifying data integrity and block linking.

2. Digital signature

  • allows users to securely verify data.
  • Private key and public key are used in pairs. The private key is used to generate the signature and the public key is used to verify the signature.
  • Ensure the authenticity and non-repudiation of blockchain transactions.

3. Public Key Infrastructure (PKI)

  • manages and distributes digital certificates.
  • Digital certificates associate a public key with a person or entity.
  • By verifying the digital certificate, you can ensure the authenticity of the other party's identity.

4. Asymmetric encryption

  • uses different keys for encryption and decryption.
  • The public key is used for encryption and the private key is used for decryption.
  • Widely used for key exchange and secure communication.

5. Symmetric encryption

  • uses the same key for encryption and decryption.
  • Faster and more efficient than asymmetric encryption.
  • Usually used for data transmission and storage.

6. Zero-knowledge proof

  • allows an individual to prove possession of certain information without revealing the actual information.
  • Used to protect privacy and enhance the scalability of blockchain.

These cryptographic technologies work together to provide a strong security foundation for the blockchain, ensuring the integrity of data, the security of transactions, and the authenticity of user identities.

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