{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"There are several versions of message signing implementations in blockchain, including but not limited to:\n\n1. Traditional cryptographic signatures: These use public-key cryptography, where a private key is used to create a signature and a public key is used to verify the signature. Examples include SSL/TLS signatures and DER/PEM-formatted signatures.\n\n2. Hash-based signatures: These use a hash function to create a fixed-size representation of the message, which is then signed. The most popular hash-based signature scheme isECDSA (Elliptic Curve Digital Signature Algorithm).\n\n3. Aggregate signatures: These allow a group of users to jointly sign a message using a single signature. Aggregate signatures are commonly used in confidential transactions and voting scenarios.\n\n4. Threshold signatures: These involve splitting a user's private key into multiple shares, which can be combined to reconstruct the original private key. Th","a":"There are mainly two versions of message signing implementation in blockchain: one is  based on the SHA-256 algorithm, and the other is based on ECDSA (Elliptic Curve Digital Signature Algorithm). In practical applications, both versions have different levels of security and efficiency performance. The SHA-256 signature algorithm is relatively fast but has lower security, while the ECDSA signature algorithm is slower but has higher security. In the Bitcoin network, the SHA-256 algorithm is adopted; while in the Ethereum network, the ECDSA algorithm is used."}]}],"pr":"800bd6708b73340b2fc6d62a0e1db79559f9034574f0a249c483842bf59e1dcc"}