Add the MD4 message digest algorithm draft implementation

ChaosTests/CMakeLists.txt

@@ -0,0 +1,20 @@
+include(FetchContent)
+
+FetchContent_Declare(
+        googletest
+        GIT_REPOSITORY https://github.com/google/googletest.git
+        GIT_TAG v1.17.0
+)
+
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
+
+add_executable(ChaosTests Md4HasherTests.cpp)
+target_link_libraries(ChaosTests gtest gtest_main)
+target_include_directories(ChaosTests PRIVATE
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/Chaos>
+)
+
+include(GoogleTest)
+
+gtest_discover_tests(ChaosTests)

ChaosTests/MD4HasherTests.cpp

@@ -0,0 +1,177 @@
+#include <gtest/gtest.h>
+
+#include "Md4.hpp"
+
+using namespace Chaos;
+
+TEST(Md4Tests, RFCTest)
+{
+    struct Helper
+    {
+        std::string operator()(const char * in) const
+        {
+            Md4::Hasher hasher;
+            hasher.Update(in, in + strlen(in));
+            return hasher.Finish().ToHexString();
+        }
+    };
+
+    Helper hash;
+
+    ASSERT_EQ("31d6cfe0d16ae931b73c59d7e0c089c0", hash(""));
+    ASSERT_EQ("bde52cb31de33e46245e05fbdbd6fb24", hash("a"));
+    ASSERT_EQ("a448017aaf21d8525fc10ae87aa6729d", hash("abc"));
+    ASSERT_EQ("d9130a8164549fe818874806e1c7014b", hash("message digest"));
+    ASSERT_EQ("d79e1c308aa5bbcdeea8ed63df412da9", hash("abcdefghijklmnopqrstuvwxyz"));
+    ASSERT_EQ("043f8582f241db351ce627e153e7f0e4", hash("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"));
+    ASSERT_EQ("e33b4ddc9c38f2199c3e7b164fcc0536", hash("12345678901234567890123456789012345678901234567890123456789012345678901234567890"));
+}
+
+TEST(Md4Tests, PartialUpdateTest)
+{
+    {
+        // "a"
+        Md4::Hasher hasher;
+
+        {
+            const char * in = "a";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        ASSERT_EQ("bde52cb31de33e46245e05fbdbd6fb24", hasher.Finish().ToHexString());
+    }
+
+    {
+        // "abc"
+        Md4::Hasher hasher;
+
+        {
+            const char * in = "ab";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "c";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        ASSERT_EQ("a448017aaf21d8525fc10ae87aa6729d", hasher.Finish().ToHexString());
+    }
+
+    {
+        // "message digest"
+        Md4::Hasher hasher;
+
+        {
+            const char * in = "me";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "ssage ";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "diges";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "t";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        ASSERT_EQ("d9130a8164549fe818874806e1c7014b", hasher.Finish().ToHexString());
+    }
+
+    {
+        // "12345678901234567890123456789012345678901234567890123456789012345678901234567890"
+        Md4::Hasher hasher;
+
+        {
+            const char * in = "12345678901234567890";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "12345678901234567890";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "12345678901234567890";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        {
+            const char * in = "12345678901234567890";
+            hasher.Update(in, in + strlen(in));
+        }
+
+        ASSERT_EQ("e33b4ddc9c38f2199c3e7b164fcc0536", hasher.Finish().ToHexString());
+    }
+}
+
+TEST(Md4Tests, LongInputTest)
+{
+    struct Helper
+    {
+        std::string operator()(const char * in) const
+        {
+            Md4::Hasher hasher;
+            hasher.Update(in, in + strlen(in));
+            return hasher.Finish().ToHexString();
+        }
+    };
+
+    Helper hash;
+
+    // 2500 zeros ('0').
+    ASSERT_EQ("20de61fc6dc2134f7a7bbcf43fd923e6", hash(std::string(2500, '0').c_str()));
+    // 1000 'a' followed by 1000 'b'.
+    ASSERT_EQ("cbabb47a57b10e0028ec7f519c66f229", hash((std::string(1000, 'a') +
+                                                        std::string(1000, 'b')).c_str()));
+}
+
+TEST(Md4Tests, LongInputPartialUpdateTest)
+{
+    {
+        // 2500 zeros ('0').
+        Md4::Hasher hasher;
+
+        std::string in(750, '0');
+
+        hasher.Update(in.begin(), in.begin() + 250);
+        hasher.Update(in.begin(), in.begin() + 500);
+        hasher.Update(in.begin(), in.begin() + 500);
+        hasher.Update(in.begin(), in.begin() + 750);
+        hasher.Update(in.begin(), in.begin() + 333);
+        hasher.Update(in.begin(), in.begin() + 167);
+
+        ASSERT_EQ("20de61fc6dc2134f7a7bbcf43fd923e6", hasher.Finish().ToHexString());
+    }
+
+    {
+        // 1000 'a' followed by 1000 'b'.
+        Md4::Hasher hasher;
+
+        std::string inA(1000, 'a');
+        std::string inB(1000, 'b');
+
+        hasher.Update(inA.begin(), inA.begin() + 100);
+        hasher.Update(inA.begin(), inA.begin() + 255);
+        hasher.Update(inA.begin(), inA.begin() + 645);
+
+        hasher.Update(inB.begin(), inB.begin() + 33);
+        hasher.Update(inB.begin(), inB.begin() + 701);
+        hasher.Update(inB.begin(), inB.begin() + 266);
+
+        ASSERT_EQ("cbabb47a57b10e0028ec7f519c66f229", hasher.Finish().ToHexString());
+    }
+}