diff --git a/CMakeLists.txt b/CMakeLists.txt
index f7fc0dc..ecfb51b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,6 +58,11 @@ add_library (cruft-crypto STATIC ${sources})
 target_link_libraries (cruft-crypto INTERFACE cruft)
 
 
+##-----------------------------------------------------------------------------
+add_executable (crypto_bench tools/bench.cpp)
+target_link_libraries (crypto_bench cruft-crypto)
+
+
 ##-----------------------------------------------------------------------------
 add_executable (crypto_hash tools/hash.cpp)
 target_link_libraries (crypto_hash cruft-crypto)
diff --git a/tools/bench.cpp b/tools/bench.cpp
new file mode 100644
index 0000000..729fd94
--- /dev/null
+++ b/tools/bench.cpp
@@ -0,0 +1,76 @@
+#include "cruft/crypto/hash/blake.hpp"
+#include "cruft/crypto/hash/blake2.hpp"
+#include "cruft/crypto/hash/md2.hpp"
+#include "cruft/crypto/hash/md4.hpp"
+#include "cruft/crypto/hash/md5.hpp"
+#include "cruft/crypto/hash/md6.hpp"
+#include "cruft/crypto/hash/ripemd.hpp"
+#include "cruft/crypto/hash/sha1.hpp"
+#include "cruft/crypto/hash/sha2.hpp"
+
+#include <cruft/util/std.hpp>
+#include <cruft/util/random.hpp>
+#include <cruft/util/rand/pcg.hpp>
+#include <cruft/util/preprocessor.hpp>
+
+#include <vector>
+#include <random>
+#include <algorithm>
+#include <iostream>
+
+
+///////////////////////////////////////////////////////////////////////////////
+template <typename HashT>
+float
+time_hash (cruft::view<u08 const*> data)
+{
+    auto const start = std::chrono::high_resolution_clock::now ();
+    HashT obj;
+    auto const res = obj (data);
+    cruft::debug::escape (res);
+    auto const finish = std::chrono::high_resolution_clock::now ();
+
+    std::chrono::duration<float> const duration = finish - start;
+    return duration.count ();
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+int
+main (void)
+{
+    // 1 GiB of random data;
+    static constexpr std::size_t SOURCE_SIZE = 1024u * 1024u * 10;
+    std::vector<u08> source (SOURCE_SIZE);
+
+    std::cerr << "generating data\n";
+#if 1
+    std::fill (std::begin (source), std::end (source), 0u);
+#else
+    std::generate_n (
+        std::begin (source),
+        SOURCE_SIZE,
+        [] () { return cruft::random::uniform<u08> (); }
+    );
+#endif
+
+    f32 const gib_multiplier = f32 (SOURCE_SIZE) / (1024 * 1024 * 1024);
+
+    std::cerr << "starting benchmark\n";
+    #define BENCH_HASH(KLASS) \
+    do { \
+        auto const elapsed = time_hash<cruft::crypto::hash::KLASS> (cruft::view (source)); \
+        std::cout << #KLASS ": " << gib_multiplier / elapsed << " GiB/s\n"; \
+    } while (0);
+
+    MAP0 (BENCH_HASH,
+        MD2,
+        MD4,
+        MD5,
+        RIPEMD,
+        SHA1,
+        SHA256,
+        blake<512>,
+        blake2
+    )
+}
\ No newline at end of file