CURVE25519_MAX_KEY_TO_DER_SZ: refactor to macro like other CURVE25519_ constants, and add FIPS clause in curve255519_der_test() to accommodate FIPS v6.

wolfcrypt/test/test.c

@@ -35648,7 +35648,11 @@ static wc_test_ret_t curve255519_der_test(void)
         0xA2, 0x5B, 0x38, 0xFD, 0x96, 0xDB, 0x2A, 0x26
     };
     curve25519_key key;
+#if !defined(HAVE_FIPS) || FIPS_VERSION3_GE(7,0,0)
     byte output[CURVE25519_MAX_KEY_TO_DER_SZ];
+#else
+    byte output[128];
+#endif
     word32 outputSz = (word32)sizeof(output);
     word32 idx;
 

wolfssl/wolfcrypt/curve25519.h

@@ -44,12 +44,7 @@
 
 #define CURVE25519_KEYSIZE 32
 #define CURVE25519_PUB_KEY_SIZE 32
-
-enum {
-    CURVE25519_MAX_KEY_TO_DER_SZ = 82,  /* for exported DER keys temp buffer */
-
-    WOLF_ENUM_DUMMY_LAST_ELEMENT(CURVE25519)
-};
+#define CURVE25519_MAX_KEY_TO_DER_SZ 82 /* for exported DER keys temp buffer */
 
 #ifdef WOLFSSL_NAMES_STATIC
 typedef char curve25519_str[12];