Merge pull request #7161 from SparkiDev/xmss

XMSS implementation

Author: JacobBarthelmeh

configure.ac

@@ -1167,6 +1167,10 @@ do
     ENABLED_WC_XMSS=yes
     AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_WC_XMSS"
     ;;
+  small)
+    ENABLED_WC_XMSS=yes
+    AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_WC_XMSS_SMALL"
+    ;;
   *)
     AC_MSG_ERROR([Invalid choice for XMSS []: $ENABLED_XMSS.])
     break;;

src/include.am

@@ -714,6 +714,7 @@ endif
 
 if BUILD_WC_XMSS
 src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/wc_xmss.c
+src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/wc_xmss_impl.c
 endif
 
 if BUILD_CURVE25519