ECDH fails for CURVE25519 using X-CUBE-CRYPTOLIB I can't get ECDH working for CURVE25519 using the STM32 HAL / crypto lib. This may be an issue with the somewhat confusing constants for this library. I can get the NIST curves working with ECDH. The trouble I have is it seems there are two cmox_ecc_impl_t constants: CMOX_ECC_CURVE25519 and CMOX_ECC_CURVE_ED25519. Here is some abbreviated test code: // inputs: size_t pubLen, uint8_t* secret, size_t secretLen
// create randoms for local test key
uint16_t randSize = pubLen;
uint8_t randBuff[randSize];
// ... set randoms via HAL_RNG_GenerateRandomNumber
ecc_key_t localKey;
if ((result = cmox_eddsa_keyGen(&eccHandle, CMOX_ECC_CURVE_ED25519, randBuff, randSize,
localKey.private, &localKey.privLen, localKey.public, &localKey.pubLen)) != CMOX_ECC_SUCCESS) {
return result;
}
// create randoms for remote test key
// ... set randoms via HAL_RNG_GenerateRandomNumber
ecc_key_t remoteKey;
if ((result = cmox_eddsa_keyGen(&eccHandle, CMOX_ECC_CURVE_ED25519, rand
