Since the creation of the web, its developers and their successors have always aimed to determine if it is possible to to prove that something is true without revealing the data that confirms the claim in question on the internet.
It is in this perspective that the evidence of zero-knowledge disclosure integrates into specific programs as is the case for cryptocurrencies. Zero-knowledge proof is a probability assessment aimed at taking the effectiveness of portable digital identity solutions to the next level.
Still known as technologie Zero Knowledge Proof (ZKP), its integration into the world of crypto-currencies has enabled the deployment of cryptographic algorithms to verify the veracity of claims concerning the possession of data without revealing them.
Zero-Knowledge Proof: What is it?
In relatively simple terms, zero-knowledge proof is a cryptographic technique which is used to determine the authenticity of a specific statement without disclosing it and which is increasingly being used in various cryptocurrencies.
Its use gives the possibility to a protocol A to demonstrate to a verifier B that a statement by A related to certain confidential information is accurate without any critical information being disclosed to B. According to the experts behind the refinement of the technology, the ZKP has an interactive application mode and in a non-interactive application mode.
Here’s an example of a zero-knowledge proof in which Alice proves that a graph contains a Hamiltonian cycle without revealing the cycle itself to Bob. Proofs like this one verify the existence of a secret without revealing any spoilers. https://t.co/I6DDhnygQ5 pic.twitter.com/xis1VxUsjy
— Quanta Magazine (@QuantaMagazine) October 13, 2022
The interactive proof requires the implementation of a multitude of communication mechanisms between the two parties involved by the operation. As for the non-interactive proof, it rather requires a single exchange of information between the participants (provider of proof and verifier). This is also why it is preferred to the first mode of application, since it improves the efficiency of the ZKP principle while reducing the back and forth between the proof provider and the verifier.
An easy-to-understand system
The mode of operation of a zero-knowledge proof is relatively simple to understand. The proof provider is required to show the verifier that he actually possesses a specific identification secret. However, he must prove this possession without having to disclose the secret himself.
Using zero-knowledge proof technology, a user would be able to demonstrate that he is of the required age to have access to a certain product or service without revealing its age. It would also be possible for a person to prove that they have sufficient income or funds to meet criteria without having to share information about their bank balance.
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The principle of identity authentication through zero-knowledge disclosure
The digital space is increasingly regulated today. The legislators of several countries around the world constantly express a desire to enhance security and privacy citizens on the web.
One of the consequences of this movement is the need for companies to guarantee respect for the privacy of their users at the same time as the latter take care of the management of their personal data.
As companies have to comply with increasingly complex regulations on the privacy of internet citizens, a need for solutions related to authentication of digital identity quickly surfaced. The use of zero-knowledge proof has helped to effectively bring to fruition the concept of creating a portable digital identity.
When we talk about portable digital identity, we mainly think of the ability of a user to generate a unique set of digital identifiers can be used on multiple platforms.
It is basically a digital identity management system which is responsible for associating unique identifiers on a user’s device, but not only. Indeed, this system is supposed to also include relevant legal documents and biometric elements such as facial identification or fingerprints.
What are the issues for common identity authentication solutions?
It is common knowledge today that personal data and especially the identity of individuals on the internet are now under the law in most countries.
Also, any data breaches, privacy breaches and authentication issues currently represent true nightmares for all online websites and apps. A situation that remains a real contrast to the old days of the initial architecture of the Internet, where the identity of the user was not a priority.
Unfortunately, although priorities have changed over time and the progress of the internet, authentication methods seem not to have evolved, as the majority of sites still use traditional models.
However, these latterare no longer enough, precisely because of the new complex security environment of the Internet which is constantly evolving. Thus, these old methods severely limit the control that users can have over their identities as well as over risk management. They also compromise access to essential data.
Most companies have chosen to use various identity authentication services in order to solve possible problems related to the identity of their users. However, the obligation to collect multidimensional data in compliance with a large set of regulations has caused new problems.
So it is today more complex for companies to quickly solve problems related to the identity of a user as well as the detection of fraud.
How zero-knowledge proof can be a solution to identity authentication on the internet?
With the principles of the CPC, we were able to create portable identity solutions. These allow companies to secure the access and personal data of their users using a single platform. It is in particular Polygon who uses it with its algorithm.
One of the direct benefits of such a seamless identity experience is the reduction in customer churn. In addition, the possibility of enjoying an effortless and secure means of connecting to one’s workstation makes it possible to provide maximum security for people who have adopted remote work. It also reduces the risk of fraud related to weak passwords.
Some developers, followers of the ZKP system, have gone further by creating of a blockchain-based solution. It consists of storing the identity of each user within a decentralized ecosystem and thus allows anyone to prove their identity if necessary.
Thanks to this solution, companies no longer really have to worry about securing a huge amount of user data. They can just use the ZKP system to store all sensitive and identifying information.
More and more algorithms make it possible to clearly distinguish a user or prove the authenticity of an object. This is one of the primary goals of NFT.