35results about How to "Realize immutability" patented technology

An implementation method of an electronic contract platform based on SDK SMS and digital signatures. In the absence of a digital certificate, a third-party platform sends a verification code through the SDK SMS gateway to authenticate the identity of the electronic contract party and confirm the conclusion of the contract. The third-party platform performs data packet splicing on the data of the contracting party, and then signs the third-party electronic signature for encapsulation, so as to realize the electronic signature of the electronic contract data when the contracting party does not have a digital certificate. The present invention provides an identity authentication method for the electronic contract signing party without a digital certificate through the SDK short message, and provides safe and effective evidence for the packaged identity authentication information, time stamp and electronic contract data through the signature method of the third-party platform digital certificate Solidification solves the cumbersome process and security concerns of the current electronic contract, and has fast, convenient and effective practical operation value.

The present invention relates to a cryptographic technology-based identification method for the Internet of Things, which includes: the service party generates the root key of the identification system and the service party's public key and private key; the user side generates its own public key and private key, and uses its own The name and public key are passed to the service party; the user side generates the item identification and secret key, and passes the user side identification, item identification, item information ciphertext and signature to the service party; the user side generates the item secret key, and the user side identification, item information The identification, item status information ciphertext and signature are passed to the service party; when the user side queries the information of the item, the user side passes the user side identification, item identification and signature to the service party, and the service party performs verification after receiving it. After the verification is passed, the service The party retrieves the item identification record and the item status record corresponding to the item identification, and transmits the user identification, item identification and state information ciphertext and signature to the user party. The invention combines cryptography and item identification confidentially, and will play an important role in the field of the Internet of Things.

The present application relates to a blockchain-based data processing method, device, equipment and storage medium. The method includes: receiving event data generated by a user terminal for business events; generating a first event block of the event data; acquiring a second event block associated with the first event block; The block has a block encryption value; the block encryption value of the second event block is used to generate the block encryption value of the first event block; the block encryption value of the first event block is used, Encrypt the first event block. According to this embodiment, the non-tamperable modification of event data recording business events is realized through blockchain technology, so that the event data recording business events has non-repudiation and legal effect.