Added BoringSSL SHAKE benchmarks.

benches/boringssl/CMakeLists.txt

@@ -27,3 +27,8 @@ FetchContent_MakeAvailable(boringssl)
 add_executable(kyber768 kyber768.cxx)
 target_compile_options(kyber768 PRIVATE -Wall -Wextra)
 target_link_libraries(kyber768 crypto benchmark::benchmark)
+
+add_executable(shake shake.cxx)
+target_include_directories(shake PRIVATE ${boringssl_SOURCE_DIR})
+target_compile_options(shake PRIVATE -Wall -Wextra)
+target_link_libraries(shake crypto benchmark::benchmark)

benches/boringssl/shake.cxx

@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <string>
+
+#include "crypto/kyber/internal.h"
+
+#include <benchmark/benchmark.h>
+
+#define BYTES_TO_OUTPUT 10000
+
+static void BM_SHAKE128(benchmark::State &state) {
+  uint8_t input[34] = {0};
+  uint8_t output[BYTES_TO_OUTPUT];
+
+  for (auto _ : state) {
+    BORINGSSL_keccak(output, BYTES_TO_OUTPUT, input, sizeof(input),
+                     boringssl_shake128);
+  }
+}
+
+static void BM_SHAKE256(benchmark::State &state) {
+  uint8_t input[34] = {0};
+  uint8_t output[BYTES_TO_OUTPUT];
+
+  for (auto _ : state) {
+    BORINGSSL_keccak(output, BYTES_TO_OUTPUT, input, sizeof(input),
+                     boringssl_shake256);
+  }
+}
+
+BENCHMARK(BM_SHAKE128);
+BENCHMARK(BM_SHAKE256);
+
+BENCHMARK_MAIN();