The DS2431P+ is a single-chip cryptographic coprocessor from Analog Devices. It provides a secure, inexpensive, low-power solution for storing and manipulating sensitive data. The DS2431P+ supports a range of cryptographic algorithms and allows users to store and manipulate sensitive data without exposing that data to security risks. The coprocessor can be used to securely store passwords, implement digital rights management systems, support secure data transfer protocols, or deliver web-of-trust networks. It features a 1-Wire interface, high-speed encryption and decryption, hardware-level random number generation, and hardware-level key-sketching functionality.