{"repo":"Toporin/Satodime-Applet","free":true,"listed":false,"github":"https://github.com/Toporin/Satodime-Applet","clone":"git clone https://github.com/Toporin/Satodime-Applet.git","description":"The open-source bearer crypto card","language":"Java","stars":15,"topics":["bitcoin","blockchain","ethereum","javacard","nfc","nft","smartcard"],"license":"AGPL-3.0","category":"blockchain-web3","readme_excerpt":"Satodime-Applet Open source javacard applet implementing a bearer crypto card. The bearer chip card that allows you to spend crypto assets like a banknote. Safely pass it along multiple times, unseal anytime with ease, thanks to cryptography. Trustless, easy to verify and completly secure. Introduction Satodime is a smartcard that stores cryptographic keypairs securely in a secure chip (also called Secure Element). Each keypair can be associated with a specific address on a blockchain. Each keypair is generated inside the secure chip and can be in any one of 3 states at any time: - uninitialized: the keypair has not been generated yet - sealed: the keypair has been generated securely inside the chip, only the public key is available - unsealed: the private key has been revealed Since the private key is generated inside the secure chip, a Satodime bearer can be certain that nobody (including himself) knows the private key until the key is unsealed. In effect, a Satodime allows to physically transfer cryptocurrencies such as Bitcoin from one person to another, without having to trust the bearer of the Satodime, AS LONG AS THE KEY IS IN THE SEALED STATE. Depending on the model, from 1 up to 3 keypairs can be stored simultaneously on a single Satodime. Security features Satodime authenticity: The Satodime includes a cryptographic mechanism that allows to check whether the card is an authentic Satodime or a fake one. If the card is not authenticated, you should be extremely carefu","default_branch":null,"files":null,"tree":[],"storefront":"/r/Toporin","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/Toporin/Satodime-Applet/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}