Understanding Secure Elements in Hardware Wallets: Ensuring Your Crypto Assets Stay Safe

Understanding Secure Elements in Hardware Wallets: Ensuring Your Crypto Assets Stay Safe

In the rapidly evolving world of cryptocurrencies, security has become a paramount concern for individuals seeking to safeguard their digital assets. Self custody, in the context of cryptocurrencies, refers to the practice of personally managing and securing your digital assets without relying on third-party custodial services. It entails individuals taking full control and responsibility for the storage and protection of their private keys or seed phrases, which are essential for accessing and managing their cryptocurrency holdings.


In self-custody, users typically utilize cold or hot wallets to store their private keys offline or in a highly secure manner. By retaining control over their private keys, individuals have direct ownership and control of their crypto assets, reducing reliance on centralized exchanges or custodians.


Self-custody provides several advantages, including increased security, privacy, and autonomy. It enables individuals to mitigate the risk of hacks, exchange failures, or potential loss of funds due to custodial mishaps. Moreover, self-custody aligns with the decentralized ethos of cryptocurrencies, empowering users to maintain full control over their financial assets and interact directly with blockchain networks. To know more about the different types of wallets you can refer to our article The Ultimate Guide to Crypto Wallets.


Hardware wallets have emerged as one of the most reliable solutions for protecting cryptocurrencies. At the heart of the majority of these devices lies a vital component known as a Secure Element. In this article, we will explore the types of Secure Elements, their role within hardware wallets, the importance of having a Secure Element, the implications of open-source hardware wallets, and the possibility of hacking a Secure Element.



Types of Secure Elements

Secure Elements are specialized microchips designed to provide a high level of security for sensitive data and cryptographic operations. They can be categorized into two main types:


✅General-Purpose Microcontrollers: These are commonly found in everyday devices such as smartphones and smart cards. While they offer some level of security, they are not specifically designed for cryptographic operations and are more susceptible to attacks.


✅Secure Microcontrollers: These are dedicated microchips engineered to meet stringent security requirements. They are designed to protect against physical attacks, tampering, and side-channel attacks. Secure microcontrollers are the preferred choice for hardware wallets due to their robust security features.


It is worth noting that Secure Elements are not exclusive to hardware wallets. They are also widely used in other industries, such as finance, where the protection of sensitive data is critical. For example, the EAL5+ (Evaluation Assurance Level) standard, widely adopted in the finance sector and credit card industry, is often utilized in hardware wallets to ensure a high level of security. For a Secure Element to receive the EAL5+ is a great sign of quality and a significant achievement.


Role of Secure Elements in Hardware Wallets

The primary function of a Secure Element within a hardware wallet is to securely store private keys and execute cryptographic operations. Private keys are the essential components required to access and authorize transactions on the blockchain. By isolating the private keys within the Secure Element, hardware wallets prevent exposure to potential malware or unauthorized access.


Secure Elements also play a crucial role in securely generating and signing transactions. They utilize advanced encryption techniques and random number generation to ensure the integrity and confidentiality of the transactions. Additionally, Secure Elements provide protection against physical attacks, such as probing or tampering, making it barely possible for an attacker to extract the sensitive data.


In addition to the Secure Element some hardware wallets, such as our products, are called cold wallets. D’CENT Wallet, as every cold wallet, is totally disconnected from the internet and operating completely offline. Adding such security layers are great opportunities to protect the digital assets of our users.


Importance of Secure Elements in Hardware Wallets

Having a Secure Element in a hardware wallet is of paramount importance for several reasons:


Protection against Malware: By keeping the private keys isolated within the Secure Element, hardware wallets significantly reduce the risk of malware compromising the keys. Even if the connected computer or mobile device is infected, the Secure Element ensures that the private keys remain secure.


✅Defense against Physical Attacks: Hardware wallets with Secure Elements are designed to resist physical attacks, such as probing, tampering, or reverse engineering. The Secure Element’s robust construction makes it extremely challenging for attackers to extract the private keys.


✅Enhanced Security for Cryptographic Operations: Secure Elements are purpose-built for cryptographic operations, incorporating strong encryption algorithms and random number generation. This ensures that transactions are signed securely and cannot be manipulated or forged.


Long story short, a Secure Element is the leading security part of a hardware wallet as it makes sure that your private keys and other sensitive data are encrypted, inaccessible from the outside and going out. The implication is the following: a cold (non connected to internet) wallet cannot be infected from online as it is disconnected from the Internet. The Secure Element makes it impossible for the hackers to access your data. To strengthen security some hardware wallet companies such as D’CENT Wallet are including features that would wipe out the data if the Secure Element detects any unauthorized access.


Of course, there are many other security layers. For instance, the D’CENT Biometric Wallet verifies all software versions and the introduction of external code at each update, your wallet is automatically wiped out if anything is detected.


Hacking a Secure Element: Is It Possible?

Secure Elements are designed with multiple layers of protection to withstand attacks and prevent unauthorized access. However, it is important to note that no security measure is entirely infallible. While hacking a Secure Element is extremely challenging, it is not entirely impossible.


Sophisticated attackers with significant resources and expertise may attempt various methods to exploit vulnerabilities in Secure Elements. These methods can include physical attacks, side-channel attacks, or advanced forms of reverse engineering. Nonetheless, the likelihood of successfully compromising a Secure Element remains minimal due to the stringent security measures implemented by the manufacturers.



Secure Elements are the cornerstone of hardware wallets, providing a robust layer of security for storing private keys, sensitive data and executing cryptographic operations. Their role in protecting against malware, physical attacks, and ensuring the integrity of transactions is crucial for the safe management of cryptocurrencies. Despite the potential for attacks, Secure Elements are highly resilient and continue to be a fundamental component in ensuring the security of cryptocurrency holdings.


As the cryptocurrency landscape evolves, hardware wallet manufacturers will undoubtedly continue to innovate and enhance the security features of their devices, keeping pace with emerging threats and providing peace of mind to crypto enthusiasts worldwide.

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D’CENT Wallet is created by IoTrust, a company founded by security experts with over two decades of security know-how and engineering experience in developing deeply embedded security solutions based on secure-chip technology (SE and TEE). 

D’CENT Wallet caters to the diverse needs of cryptocurrency users, prioritizing security and user experience. Users can choose the Biometric Wallet, Card type Wallet, or the free-to-use Software Wallet.
This blog is for educational purposes only. Information presented here, including projects or brands mentioned, is informative and not financial, legal, or tax advice. While we strive for accuracy, we cannot be held liable for any inaccuracies. Cryptocurrencies are inherently risky. Do your own thorough research and consider consulting a financial advisor for investment decisions aligned with your goals and risk tolerance. External links may be present and we are not responsible for their content or practices. Review their terms of service and privacy policies.

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