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Can blockchain technology really protect personal information

Time : 12/12/2021 Author : qlotzs Click : + -
        The relationship between law and technology is inseparable, because once technology is applied in real life, it will be bound by law, which is why in order to develop technology, we must formulate corresponding legal regulations. The same is true of blockchain technology. According to industry experts, blockchain services will be officially commercialized as early as the second half of this year. However, if there are no legal conditions to support, blockchain services are likely to be in ‘ Protect personal information ’ And so on. In order to protect data and realize the sharing of multiple people, the module chain and personal information that cannot be tampered with are established at the same time. Therefore, the personal information protection law promulgated has two contradictory characteristics of transparency and privacy.
 
        On the 8th of this month, at the 24th Ethereum meet up event in Seoul held at atti Hotel, shengshuidong, Seoul, cubichill, on behalf of Huang Xianzhe, pointed out the future development direction for solving the above problems with the theme of "gdpr, privacy and blockchain". ■ in case of violation of gdpr, a fine of 4% of annual sales will be imposed &hellip& hellip; The encrypted information uploaded to the blockchain is also personal information. The generaldataprotectionregulation (gdpr) issued by the European Union aims to strengthen the protection of personal information. The personal information protection law has been officially implemented since May last year.
 
        Gdpr is not only applicable to enterprises and countries in the EU, but also applicable to overseas enterprises promoting products and services to EU citizens or enterprises. From this perspective, gdpr not only affects European countries, but also imperceptibly affects the world, and is classified as ‘ The strictest ’ Personal information protection law. The penalty provisions in gdpr are stricter than the personal information protection law of South Korea. In South Korea, if you violate the personal information protection law of South Korea, you need to pay a maximum fine of 50million won. According to gdpr regulations, if an enterprise violates the regulations, it will be punished according to the severity of its behavior, and the maximum penalty is 4% of the global annual sales of the previous year or 20million euros (about 25.5 billion won) for the violating enterprise.
 
        Representative Huang said, "the law exists to maintain the neutrality of technology, but the technology covered by the law is the existing technology that has been born, not the future technology. When gdpr was launched, it did not take into account the decentralized system or token Economics (a new coinage that combines token and economy) And so on, which is also one of the reasons for the conflict between the law and blockchain technology. Whether the information on the blockchain is applicable to gdpr depends on whether the relevant information belongs to personal information. Because gdpr is a specification that only applies to the collection, storage, transmission and use of personal information, not personal information, it is not limited by gdpr.
 
        Personal information referred to in gdpr refers to all identified personal information or identifiable information about natural persons. In the process of gdpr classifying information, it includes the possibility of inferring directly and indirectly from various data. Representative Huang explained that hashing (hash method, the method of converting character strings into fixed length numerical values or index values) and encryption we used are unrecognized index values, which cannot be regarded as anonymous information that is not applicable to gdpr, and should be handled as personal information. According to the personal information protection law of South Korea, information owners have the right to correct and change personal data, have the right to request the deletion of personal data, and have the right to transfer information to their favorite places.
 
        Among them, the contradiction between blockchain and gdpr is the right to delete personal information, also known as the right to be forgotten. The data uploaded to the blockchain can be shared by all, and can not be tampered with or arbitrarily deleted. Therefore, the data stored in the blockchain can not be forged. However, from the perspective of personal information protection, this advantage also violates the right to be forgotten. Representative Huang proposed four plans for this. The first method is to record all information on offchain instead of on blockchain. On the contrary, onchain records all information including reference type data, giving full play to the advantages of blockchain.
 
        Users who use this method believe that gdpr can be fully followed through this method. Representative Huang explained that the second method is to encrypt all personal information and put it into onchain. If someone wants to delete it, just delete the key, which is also the most discussed way at present. On the premise of information encryption, even if uploaded to onchain, no one can access personal information at will. If you delete the secret key that can solve the password, it will be considered as the personal information that needs to be deleted. But does this method really delete personal information, or just treat it as untouchable ‘ Tend to ’, Industry insiders have different views. Not only that, they will also face the problem that passwords can be cracked through quantum computing in the future.
 
        In addition, there are also plans to communicate on onchein through encryption methods and removing relatively sensitive personal information on offchein. ■ law · The issue of jurisdiction also remains... Considering the particularity of technological development, flexible laws are needed. The subjects of data collection, management and service are often vague in the building block chain, and there are also problems surrounding the legal subject. As for whether node is a data controller or a processor, there is no clear definition. In addition, according to the public chain or private chain, the subject of legal responsibility is also different. There is also the issue of jurisdiction. GPR defines in detail the conditions for transferring personal data to a third country or a third service provider.
 
        Representative Huang said, "the issue of jurisdiction is not necessarily a matter of blockchain. Where are the jurisdiction branches of DB blockchain scattered all over the world, and who has the obligation to inform immediately when violating the regulations.
 
        
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