Digital signature technology is the underlying core technology of electronic signature, which consists of asymmetric key encryption technology and digital digest technology. First, the sender uses the Hash function to encrypt the content of the file and generates a digital digest, and then uses the private key to encrypt the digital digest to form a digital signature; the receiver uses the public key provided by the sender to decrypt the digital signature; if the decrypted digital digest is If the digital digest of the sender is consistent, it is confirmed that the content has not been tampered with and the file is provided by the sender.
More blockchain technology and application classification:
Blockchain applicationBlockchain development
Ethernet Square | Fabric | BCOS | cryptography | consensus algorithm | bitcoin | Other chain
Token Economy | Traditional Financial Scenarios | Decentralized Finance | Anti-counterfeiting Traceability | Data Sharing | Trusted Deposit
Traditional electronic signature technology scheme
CFCA electronic contract solution
Blockchain electronic signature scheme
Multiple authoritative nodes on the blockchain jointly verify and store the hash value, digital signature, and time stamp of the file . In this way, even if the original and the signature result are not stored on the blockchain, no changes can be made to the original and the signature result stored elsewhere, otherwise the verification will fail. If it is a centralized storage of file hash value and data signature, the credibility is insufficient: when the signature needs to be changed, the file hash value and digital signature can be regenerated (and this is an unrealizable operation on the blockchain. The basic characteristics of the block chain are non-tamperable, multi-party consensus).
Original link: Blockchain electronic signature technology and solutions