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Use ecp keypair calc public instead.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2026-05-01 21:01:45 +02:00
parent 98145a0ef4
commit 6aa986ca06
3 changed files with 4 additions and 9 deletions
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2
pico-keys-sdk

Submodule pico-keys-sdk updated: 92b8c644d8...9cb83e3abc

2
src/fido/cbor_vendor.c
View File

@@ -217,7 +217,7 @@ static int cbor_vendor_generic(uint8_t cmd, const uint8_t *data, size_t len) {
mbedtls_ecdsa_free(&ekey);
CBOR_ERROR(CTAP2_ERR_PROCESSING);
}
ret = mbedtls_ecp_mul(&ekey.grp, &ekey.Q, &ekey.d, &ekey.grp.G, random_fill_iterator, NULL);
ret = mbedtls_ecp_keypair_calc_public(&ekey, random_fill_iterator, NULL);
if (ret != 0) {
mbedtls_ecdsa_free(&ekey);
CBOR_ERROR(CTAP2_ERR_PROCESSING);

9
src/fido/fido.c
View File

@@ -349,12 +349,7 @@ 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_fill_iterator, NULL);
}
#endif
return mbedtls_ecp_mul(&key->grp, &key->Q, &key->d, &key->grp.G, random_fill_iterator, NULL);
return mbedtls_ecp_keypair_calc_public(key, random_fill_iterator, NULL);
}
mbedtls_platform_zeroize(outk, sizeof(outk));
return r;
@@ -426,7 +421,7 @@ int scan_files_fido(void) {
mbedtls_ecdsa_free(&key);
return ret;
}
ret = mbedtls_ecp_mul(&key.grp, &key.Q, &key.d, &key.grp.G, random_fill_iterator, NULL);
ret = mbedtls_ecp_keypair_calc_public(&key, random_fill_iterator, NULL);
if (ret != 0) {
mbedtls_ecdsa_free(&key);
return ret;