Fix for SP math all and ECC with compressed keys (missing sp_add_d). Reproduce using: ./configure --disable-rsa --disable-dh --enable-compkey --disable-pkcs12 && make.

configure.ac

@@ -8950,6 +8950,7 @@ echo "   * XCHACHA:                    $ENABLED_XCHACHA"
 echo "   * Hash DRBG:                  $ENABLED_HASHDRBG"
 echo "   * MmemUse Entropy:            $ENABLED_ENTROPY_MEMUSE"
 echo "   * PWDBASED:                   $ENABLED_PWDBASED"
+echo "   * Encrypted keys:             $ENABLED_ENCKEYS"
 echo "   * scrypt:                     $ENABLED_SCRYPT"
 echo "   * wolfCrypt Only:             $ENABLED_CRYPTONLY"
 echo "   * HKDF:                       $ENABLED_HKDF"

wolfcrypt/src/sp_int.c

@@ -4780,7 +4780,7 @@ static void _sp_mont_setup(const sp_int* m, sp_int_digit* rho);
 
 /* Determine when mp_add_d is required. */
 #if !defined(NO_PWDBASED) || defined(WOLFSSL_KEY_GEN) || !defined(NO_DH) || \
-    !defined(NO_DSA) || \
+    !defined(NO_DSA) || (defined(HAVE_ECC) && defined(HAVE_COMP_KEY)) || \
     (!defined(NO_RSA) && !defined(WOLFSSL_RSA_VERIFY_ONLY)) || \
     defined(OPENSSL_EXTRA)
 #define WOLFSSL_SP_ADD_D