7.4. The Hash driver

This library is an implementation of the STM32F4 Hash cryptographic IP driver.

It provide an abstraction of the Hash device interactions through high level API in order to request hashing of any content, using the various hash methods supported by the HASH coprocessor of the STM32F4 SoC.

Table of Contents

• 7.4.1. About the Hash principle
  • 7.4.1.1. Principles
• 7.4.2. The drvHash API
  • 7.4.2.1. Initializing the hash driver
  • 7.4.2.2. Mapping and unmapping the HASH device
  • 7.4.2.3. Calculating a digest
  • 7.4.2.4. Getting back the digest
• 7.4.3. FAQ
  • 7.4.3.1. Is the Hash driver thread safe?
  • 7.4.3.2. Can I request digests from unmapped data when using DMA?