mbedtls_ecp_write_key: no FEATURE_UNAVAILABLE error
When exporting a key, MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE should not happen.
This error indicates that the curve is not supported, but that would prevent
the creation of the key.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/include/mbedtls/ecp.h b/include/mbedtls/ecp.h
index 76aef32..3d14f36 100644
--- a/include/mbedtls/ecp.h
+++ b/include/mbedtls/ecp.h
@@ -1339,8 +1339,6 @@
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the \p key
representation is larger than the available space in \p buf.
- * \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the operation for
- * the group is not implemented.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_ecp_write_key(mbedtls_ecp_keypair *key,
diff --git a/library/ecp.c b/library/ecp.c
index 758d54b..66b3dc1 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -3305,7 +3305,7 @@
int mbedtls_ecp_write_key(mbedtls_ecp_keypair *key,
unsigned char *buf, size_t buflen)
{
- int ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
+ int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
#if defined(MBEDTLS_ECP_MONTGOMERY_ENABLED)
if (mbedtls_ecp_get_type(&key->grp) == MBEDTLS_ECP_TYPE_MONTGOMERY) {