Use uint16_t to store key usage field in X.509 CRT
Also, reorder the fields to avoid padding, thereby reducing the size of
mbedtls_x509_crt_frame by 2 Bytes.
diff --git a/include/mbedtls/x509_crt.h b/include/mbedtls/x509_crt.h
index 26f3a62..47b29de 100644
--- a/include/mbedtls/x509_crt.h
+++ b/include/mbedtls/x509_crt.h
@@ -63,13 +63,13 @@
uint8_t ns_cert_type; /**< Optional Netscape certificate type extension value:
* See the values in x509.h */
- unsigned int key_usage; /**< Optional key usage extension value: See the values in x509.h */
- uint32_t ext_types; /**< Bitfield indicating which extensions are present.
- * See the values in x509.h. */
-
mbedtls_md_type_t sig_md; /**< The hash algorithm used to hash CRT before signing. */
mbedtls_pk_type_t sig_pk; /**< The signature algorithm used to sign the CRT hash. */
+ uint16_t key_usage; /**< Optional key usage extension value: See the values in x509.h */
+ uint32_t ext_types; /**< Bitfield indicating which extensions are present.
+ * See the values in x509.h. */
+
mbedtls_x509_time valid_from; /**< The start time of certificate validity. */
mbedtls_x509_time valid_to; /**< The end time of certificate validity. */