Author: Carie Pointer

We have added support for RISC-V hardware in our wolfBoot library. The reference example uses the SiFive HiFive1 FE310 board to demonstrate a secure bootloader and firmware upgrade.

The HiFive1 is a 32-bit E31 RISC-V core capable of running at 320MHz. It includes 4MB of external flash and 16KB of internal RAM.

The wolfBoot library provides:

• Boot validation of the firmware image using hash and signature
• Reliable firmware update (power fail safe).
• Rollback support if application does not report “success”
• Version checking to prevent downgrade attack
• Support for external flash on updates

This adds support for:

• RV32 Hardware Access Layer (HAL) support for:
  • PLL Clock configuration
  • Flash eSPI
  • UART
  • RTC
• Firmware update example using the serial interface

Full setup and installation instructions can be found in “docs/Targets.md”.

These new features can be found on GitHub here:
https://github.com/wolfSSL/wolfBoot/pull/14

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

Are you a user of MCU with CryptoCell hardware?  If so, you will be happy to know that wolfSSL recently added support for CryptoCell with wolfCrypt and benchmark examples to the wolfSSL embedded SSL/TLS library!

The wolfSSL port supports the following features:

• SHA-256
• AES CBC
• Elliptic Curve Digital Signature Algorithm (ECDSA) – sign and verify
• Elliptic Curve Diffie Hellman (ECDH) – shared secret
• ECC key generation support
• RSA sign and verify
• RSA key generation support
• RSA encrypt and decrypt

These features are tested on nRF52840 hardware platform with Nordic nRF5_SDK_15.2.0.

You can use the WOLFSSL_CRYPTOCELL macro to activate the CryptoCell support in wolfSSL. For instructions on how to build and run the examples on your projects, please see the “<wolfssl-root>/IDE/CRYPTOCELL/README” file.  This support is currently located in our GitHub master branch, and will roll into the next stable release of wolfSSL.

wolfSSL provides support for the latest and greatest version of the TLS protocol, TLS 1.3! Using the wolfSSL port will allow your device to connect to the internet in one of the most secure ways possible.

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

Resources

The most recent version of wolfSSL can be downloaded from our download page, here: https://www.wolfssl.com/download/
wolfSSL GitHub repository: https://github.com/wolfssl/wolfssl.git
wolfSSL support for TLS 1.3: https://www.wolfssl.com/docs/tls13/