Merge remote-tracking branch 'upstream-public/pr/865' into development

include/mbedtls/ccm.h

@@ -28,6 +28,10 @@
 #define MBEDTLS_ERR_CCM_BAD_INPUT      -0x000D /**< Bad input parameters to function. */
 #define MBEDTLS_ERR_CCM_AUTH_FAILED    -0x000F /**< Authenticated decryption failed. */
 
+#if !defined(MBEDTLS_CCM_ALT)
+// Regular implementation
+//
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -125,6 +129,18 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
                       const unsigned char *input, unsigned char *output,
                       const unsigned char *tag, size_t tag_len );
 
+#ifdef __cplusplus
+}
+#endif
+
+#else  /* !MBEDTLS_CCM_ALT */
+#include "ccm_alt.h"
+#endif /* !MBEDTLS_CCM_ALT */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
 /**
  * \brief          Checkup routine

include/mbedtls/config.h

@@ -266,6 +266,7 @@
 //#define MBEDTLS_ARC4_ALT
 //#define MBEDTLS_BLOWFISH_ALT
 //#define MBEDTLS_CAMELLIA_ALT
+//#define MBEDTLS_CCM_ALT
 //#define MBEDTLS_DES_ALT
 //#define MBEDTLS_XTEA_ALT
 //#define MBEDTLS_MD2_ALT