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Add EDDSA support as a conditional build.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2025-02-21 19:00:44 +01:00
parent d54bc1b0f3
commit b91ece8ec3
8 changed files with 36 additions and 17 deletions
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6
src/fido/fido.c
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@@ -112,12 +112,14 @@ mbedtls_ecp_group_id fido_curve_to_mbedtls(int curve) {
else if (curve == FIDO2_CURVE_X448) {
return MBEDTLS_ECP_DP_CURVE448;
}
#ifdef MBEDTLS_EDDSA_C
else if (curve == FIDO2_CURVE_ED25519) {
return MBEDTLS_ECP_DP_ED25519;
}
else if (curve == FIDO2_CURVE_ED448) {
return MBEDTLS_ECP_DP_ED448;
}
#endif
return MBEDTLS_ECP_DP_NONE;
}
int mbedtls_curve_to_fido(mbedtls_ecp_group_id id) {
@@ -139,12 +141,14 @@ int mbedtls_curve_to_fido(mbedtls_ecp_group_id id) {
else if (id == MBEDTLS_ECP_DP_CURVE448) {
return FIDO2_CURVE_X448;
}
#ifdef MBEDTLS_EDDSA_C
else if (id == MBEDTLS_ECP_DP_ED25519) {
return FIDO2_CURVE_ED25519;
}
else if (id == MBEDTLS_ECP_DP_ED448) {
return FIDO2_CURVE_ED448;
}
#endif
return 0;
}
@@ -292,9 +296,11 @@ int derive_key(const uint8_t *app_id, bool new_key, uint8_t *key_handle, int cur
if (r != 0) {
return r;
}
#ifdef MBEDTLS_EDDSA_C
if (curve == MBEDTLS_ECP_DP_ED25519) {
return mbedtls_ecp_point_edwards(&key->grp, &key->Q, &key->d, random_gen, NULL);
}
#endif
return mbedtls_ecp_mul(&key->grp, &key->Q, &key->d, &key->grp.G, random_gen, NULL);
}
mbedtls_platform_zeroize(outk, sizeof(outk));