diff --git a/util/fipstools/break-tests.sh b/util/fipstools/break-tests.sh
new file mode 100644
index 0000000..5b1cd21
--- /dev/null
+++ b/util/fipstools/break-tests.sh
@@ -0,0 +1,53 @@
+# Copyright (c) 2018, Google Inc.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+# This script exists to exercise breaking each of the FIPS tests. It builds
+# BoringSSL differently for each test and that can take a long time. Thus it's
+# run twice: once, from a BoringSSL source tree, with "build" as the sole
+# argument to run the builds, and then (from the same location) with no
+# arguments to run each script.
+#
+# Run it with /bin/bash, not /bin/sh, otherwise "read" may fail.
+
+set -x
+
+TESTS="NONE ECDSA_PWCT CRNG RSA_PWCT AES_CBC AES_GCM DES SHA_1 SHA_256 SHA_512 RSA_SIG DRBG ECDSA_SIG"
+
+if [ "x$1" = "xbuild" ]; then
+	for test in $TESTS; do
+		rm -Rf build-$test
+		mkdir build-$test
+		pushd build-$test
+		cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=${HOME}/toolchain -DFIPS=1 -DFIPS_BREAK_TEST=${test} -DCMAKE_BUILD_TYPE=Release ..
+		ninja test_fips
+		popd
+	done
+
+	exit 0
+fi
+
+for test in $TESTS; do
+	pushd build-$test
+	printf "\n\n\\x1b[1m$test\\x1b[0m\n"
+	./fipstools/test_fips
+	echo "Waiting for keypress..."
+	read
+	popd
+done
+
+pushd build-NONE
+printf "\\x1b[1mIntegrity\\x1b[0m\n"
+go run ../util/fipstools/break-hash.go ./fipstools/test_fips ./fipstools/test_fips_broken
+./fipstools/test_fips_broken
+popd