CryptoVault - A Secure Hardware Wallet for Decentralized Key Management

Lehto, Niko; Halunen, Kimmo; Latvala, Outi-Marja; Karinsalo, Anni; Salonen, Jarno

doi:10.1109/coins51742.2021.9524133

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…DH can be used on unsecured channels for exchanging encryption keys without knowing each other. The safety of encryption keys is mandatory, so we proposed using a hardware wallet [38] to store the DHgenerated password keys. Keys can be further securely handled through key management algorithms [39], which could be taken as future work for this research.…”

Section: Cryptography For Summarized Videosmentioning

confidence: 99%

Privacy Preserved Video Summarization of Road Traffic Events for IoT Smart Cities

et al. 2023

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The purpose of smart surveillance systems for automatic detection of road traffic accidents is to quickly respond to minimize human and financial losses in smart cities. However, along with the self-evident benefits of surveillance applications, privacy protection remains crucial under any circumstances. Hence, to ensure the privacy of sensitive data, European General Data Protection Regulation (EU-GDPR) has come into force. EU-GDPR suggests data minimisation and data protection by design for data collection and storage. Therefore, for a privacy-aware surveillance system, this paper targets the identification of two areas of concern: (1) detection of road traffic events (accidents), and (2) privacy preserved video summarization for the detected events in the surveillance videos. The focus of this research is to categorise the traffic events for summarization of the video content, therefore, a state-of-the-art object detection algorithm, i.e., You Only Look Once (YOLOv5), has been employed. YOLOv5 is trained using a customised synthetic dataset of 600 annotated accident and non-accident video frames. Privacy preservation is achieved in two steps, firstly, a synthetic dataset is used for training and validation purposes, while, testing is performed on real-time data with an accuracy from 55% to 85%. Secondly, the real-time summarized videos (reduced video duration to 42.97% on average) are extracted and stored in an encrypted format to avoid un-trusted access to sensitive event-based data. Fernet, a symmetric encryption algorithm is applied to the summarized videos along with Diffie–Hellman (DH) key exchange algorithm and SHA256 hash algorithm. The encryption key is deleted immediately after the encryption process, and the decryption key is generated at the system of authorised stakeholders, which prevents the key from a man-in-the-middle (MITM) attack.

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Section: Cryptography For Summarized Videosmentioning

confidence: 99%

Privacy Preserved Video Summarization of Road Traffic Events for IoT Smart Cities

et al. 2023

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“…An Ethereum keystore is a means of authenticating to a specific address on Ethereum and is a file that stores a private key encrypted with a passphrase [25,26]. To obtain a private key, you need to know not only the keystore file but also the passphrase, and, for usability reasons, it is a key storage standard created for secure transactions using the keystore and passphrase combination rather than exposing the private key and using it directly [27].…”

Section: Background Technology 241 Ethereum Keystorementioning

confidence: 99%

Non-Face-to-Face P2P (Peer-to-Peer) Real-Time Token Payment Blockchain System

Han

Jeong

2023

Applied Sciences

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With the increase in intelligent voice phishing and the increasing reliance on open banking systems, there has been a rise in cases where individuals’ personal information has been exposed, resulting in significant financial losses for the victims. Non-face-to-face transactions in the financial sector face challenges such as customer identification, ensuring transaction integrity and preventing transaction rejection. Blockchain-based distributed ledgers have been proposed as a solution but their adoption is limited due to the difficulty of managing private keys and the burden of gas fees management. This paper proposes a non-face-to-face P2P real-time token payment system that minimizes the risk of key loss by storing private keys in a keystore file and database through a server-based key management module. The proposed system simplifies token creation and management through a server-based token management module and implements an automatic gas-charging function for smooth token transactions. Transaction integrity and non-repudiation are ensured through a transaction confirmation module that uses transaction IDs without exposing personal information. Furthermore, advanced security measures such as blocking foreign IP access and DDoS defense are implemented to securely protect user data. The proposed system aims to provide a convenient, secure and accessible online payment solution to the public by implementing a self-authentication function using a web application that is not limited to smartphones or application platforms.

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