Kaspar Schleiser
ce9b1e3826
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Micro-ECC for RIOT
This port of Micro-ECC to RIOT is based on the Micro-ECC
upstream and adds hwrng_read
(provided by RIOT) as the default RNG function if it is available on the target
platform. This port also fixes a minor issue with unused variables in the
upstream code.
Usage
Build
Add
USEPKG += micro-ecc
to your Makefile.
Choosing the right API
Before using the Micro-ECC library, you need to check the Makefile.features
of your target board to see if periph_hwrng is provided.
If it is provided, you may safely use uECC_make_key to generate ECDSA key
pairs and call uECC_sign/uECC_verify to sign/verify the ECDSA signatures.
If not, you cannot use uECC_make_key or uECC_sign APIs anymore. The ECDSA
keys have to be generated on a platform with HWRNG support (e.g., native) and
transferred to your target device. You need to use uECC_sign_deterministic to
perform ECDSA deterministic signing (standardized by RFC 6979). You can still
use uECC_verify to verify the signatures from both signing APIs.
WARNING Calling uECC_make_key and uECC_sign APIs on platforms without
HWRNG support will lead to compile failure.
Examples of using these uECC APIs can be found in the test folder of the
Micro-ECC upstream.