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pkparse: use proper sizing for buffer

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
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Valerio Setti
2023-04-04 10:48:57 +02:00
parent 34f6755b34
commit 4bf73ad83f
1 changed files with 4 additions and 1 deletions
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library/pkparse.c
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@@ -888,7 +888,10 @@ static int pk_derive_public_key(mbedtls_ecp_group *grp, mbedtls_ecp_point *Q,
psa_key_attributes_t key_attr = PSA_KEY_ATTRIBUTES_INIT; psa_key_attributes_t key_attr = PSA_KEY_ATTRIBUTES_INIT;
size_t curve_bits; size_t curve_bits;
psa_ecc_family_t curve = mbedtls_ecc_group_to_psa(grp->id, &curve_bits); psa_ecc_family_t curve = mbedtls_ecc_group_to_psa(grp->id, &curve_bits);
unsigned char key_buf[MBEDTLS_PSA_MAX_EC_KEY_PAIR_LENGTH]; /* This buffer is used to store the private key at first and then the
* public one (but not at the same time). Therefore we size it for the
* latter since it's bigger. */
unsigned char key_buf[MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH];
size_t key_len = PSA_BITS_TO_BYTES(curve_bits); size_t key_len = PSA_BITS_TO_BYTES(curve_bits);
mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT; mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT;
int ret; int ret;