DS28E22P+

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The DS28E22P+ is a cryptographic authentication device from Maxim Integrated, primarily use for authentication, cryptographic key and signature operations, secure device configuration and more.

This device uses Permutation-Based Authenticated Encryption (PAE) to securely communicate with an external host computer, allowing for both encryption and authentication. This results in a secure yet efficient device that can be used for improved security, network control and remote access. The DS28E22P+ integrates advanced features like ECDSA (Elliptic Curve Digital Signature Algorithm) with SHA-256 hashing and AES-128 encryption. This device also has built-in 1-Wire protocol support with features like overdrive, strong pull-up, and three different speed modes.

The main application fields of the DS28E22P+ are biomedical, automotive, industrial and consumer applications. Some use cases include smart lock and password security systems, access control systems, authentication of medical implants, automotive control systems, home appliance control and medical health sensors.

The working principle of the DS28E22P+ is based on its two main parts, a secure device and an attached host computer. The secure device, which is typically connected to the external environment, runs the cryptographic authentication and data encryption functions. The host computer is connected via secure communication lines. The secure device is responsible for the secure storage and communication of data with the external environment. Cryptographically protected messages are exchanged between the secure device and the host computer. The secure device will then communicate with the host computer by sending and receiving data.

The secure device runs an ECDSA, SHA-256 and AES-128 algorithms. ECDSA is used for digital signature, SHA-256 for hash algorithm and AES-128 for an encryption algorithm. The data from the secure device and the host computer is encrypted. This prevents any data from being tampered with or read by unauthorized third parties. The secure device then authenticates the data and sends it back to the host computer.

The DS28E22P+ is a very efficient and reliable authenticator for high-level security applications. This device utilizes a secure authentication protocol and is based on strong cryptographic algorithms. It is designed to protect data against unauthorized access and provide secure communication between host and external devices. With features like overdrive, high temperature range and low power, this device is well-suited to a wide range of applications.

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