Description: TrustZone is a security extension designed for ARM processors that provides a secure environment for executing sensitive tasks. This technology allows the creation of a ‘secure world’ within the processor, where critical operations can be performed without the risk of being compromised by malicious software operating in the ‘normal world’. TrustZone divides the system into two environments: the secure and the non-secure, allowing sensitive applications and data, such as payment information or user credentials, to be handled in isolation. This architecture not only enhances device security but also optimizes performance by enabling critical tasks to be executed more efficiently. TrustZone is particularly relevant in various technological contexts, including mobile devices, Internet of Things (IoT), and embedded systems, where data protection is paramount. Furthermore, its integration into ARM architecture has allowed a wide range of devices, from smartphones to industrial control systems, to benefit from its advanced security features.
History: TrustZone was introduced by ARM in 2004 as part of its ARMv6 architecture. Since its launch, it has evolved with each new version of the ARM architecture, enhancing its security capabilities and expanding its use in various applications. Over the years, TrustZone has been adopted by numerous device manufacturers, becoming a standard in the industry for protecting sensitive data.
Uses: TrustZone is primarily used in mobile devices to protect sensitive information, such as credit card data and user credentials. It is also applied in the Internet of Things (IoT) to secure communication between devices and protect critical data in various environments. Additionally, it is used in mobile payment systems and biometric authentication.
Examples: An example of TrustZone usage is in smartphones, where it is used to securely store payment information in applications like mobile wallets. Another example is in IoT devices, where it secures communication between sensors and control systems, ensuring that data is not manipulated by malicious actors.
