wolfTPM support for STMicroelectronics ST33TP TPM 2.0 modules

We have added ST33TP support for the I2C and SPI version of the TPM 2.0 modules to the wolfTPM library.

STMicroelectronics ST33TP* TPM 2.0 Module Specifications:

  • Interfaces: SPI (33MHz) or I2C (400kHz)
  • Algorithms: RSA (1024/2048), ECC (224/256), AES (128/192/256), SHA1, SHA2, HMAC
  • Certifications: CC EAL4+ and FIPS 140-2 Level 2
  • NV Storage: 112KB

wolfTPM Library Features:

  • The design allows for easy portability to different platforms.
  • Native C code designed for embedded use.
  • Single IO callback for hardware interface.
  • No external library dependencies.
  • Compact code size and minimal memory use.
  • HAL IO callback examples for Raspberry Pi, STM32 CubeMX Hal and Atmel ASF.
  • Tested on ST ST33TP* SPI/I2C and Infineon Optiga SLB9670.

Wrappers to simplify:

  • Key Generation
  • RSA encrypt/decrypt
  • ECC sign/verify (ECDSA)
  • ECC shared secret (ECDH)
  • NV access (key and data storage)

Examples for:

  • All TPM2 native API’s
  • TPM wrappers
  • PKCS #7
  • Certificate Signing Request (CSR)
  • TLS Client/Server
  • Benchmarking

For the latest information and sources see GitHub here:

For more questions please email us at facts@wolfssl.com.