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Secure Element

A Secure Element is a specialized microchip designed with a single goal: to securely store sensitive data. In the context of hardware wallets, it is the place where the private key is stored. This key is essentially a password that allows access to and the sending of cryptocurrencies. The chip functions as a separate and fortified vault inside the wallet itself. It is physically isolated from the main processor, which handles routine operations such as displaying information on the screen or communicating with a computer. When a user confirms a transaction, the data to be signed is sent to this chip. The signing itself using the private key takes place inside the Secure Element, and only the result—the signed transaction—comes out. Thus, the private key never leaves the secure environment of the chip and is not exposed to the risk of disclosure. These chips are also designed to withstand both physical and software attacks. In the event of an unauthorized tampering attempt, they are capable of defending themselves, for example, by erasing the stored data. The principle of operation is similar to a chip on a payment card or a SIM card in a mobile phone, where it is also necessary to protect unique and secret data within separate, secure hardware.

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