{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the main cryptographic technologies in blockchain?","a":"The main cryptographic technologies in blockchain include hash algorithms, symmetric encryption algorithms, and asymmetric encryption algorithms. Hash algorithms are used in blockchain to build blocks and confirm the integrity of transactions. They are a class of mathematical  function algorithms with the characteristics of arbitrary input size, fixed output size, and efficient calculation. Symmetric encryption and asymmetric encryption algorithms are used to ensure the security of data transmission and access, with asymmetric encryption algorithms being more commonly used in blockchain systems. In addition, cryptographic technologies also involve consensus mechanisms, smart contracts, and other aspects, jointly constituting the security cornerstone of blockchain technology."}]}],"pr":"85b7cfe6d95d86e0308bc29b474e9320244bae4eaa5faa8c0f3ad5c38e911a06"}