Move ECP key generation code to the PSA ECP specific C file
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/psa_crypto_ecp.c b/library/psa_crypto_ecp.c
index 1a8f15e..95bb728 100644
--- a/library/psa_crypto_ecp.c
+++ b/library/psa_crypto_ecp.c
@@ -292,6 +292,52 @@
#endif /* defined(BUILTIN_KEY_TYPE_ECC_KEY_PAIR) ||
* defined(BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */
+#if defined(BUILTIN_KEY_TYPE_ECC_KEY_PAIR)
+psa_status_t mbedtls_psa_ecp_generate_key(
+ const psa_key_attributes_t *attributes,
+ uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length )
+{
+ psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+ int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+
+ psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY(
+ attributes->core.type );
+ mbedtls_ecp_group_id grp_id =
+ mbedtls_ecc_group_of_psa( curve, attributes->core.bits, 0 );
+
+ const mbedtls_ecp_curve_info *curve_info =
+ mbedtls_ecp_curve_info_from_grp_id( grp_id );
+ mbedtls_ecp_keypair ecp;
+
+ if( attributes->domain_parameters_size != 0 )
+ return( PSA_ERROR_NOT_SUPPORTED );
+
+ if( grp_id == MBEDTLS_ECP_DP_NONE || curve_info == NULL )
+ return( PSA_ERROR_NOT_SUPPORTED );
+
+ mbedtls_ecp_keypair_init( &ecp );
+ ret = mbedtls_ecp_gen_key( grp_id, &ecp,
+ mbedtls_psa_get_random,
+ MBEDTLS_PSA_RANDOM_STATE );
+ if( ret != 0 )
+ {
+ mbedtls_ecp_keypair_free( &ecp );
+ return( mbedtls_to_psa_error( ret ) );
+ }
+
+ status = mbedtls_to_psa_error(
+ mbedtls_ecp_write_key( &ecp, key_buffer, key_buffer_size ) );
+
+ mbedtls_ecp_keypair_free( &ecp );
+
+ if( status == PSA_SUCCESS )
+ *key_buffer_length = key_buffer_size;
+
+ return( status );
+}
+#endif /* defined(BUILTIN_KEY_TYPE_ECC_KEY_PAIR) */
+
+
#if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) || \
defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY)