Add more hash algorthms, switch to openssl / libcrypto

CMakeLists.txt

@@ -12,6 +12,7 @@ add_executable(ImHex
         source/main.cpp
         source/window.cpp
         source/utils.cpp
+        source/crypto.cpp
 
         source/parser/lexer.cpp
         source/parser/parser.cpp
@@ -36,6 +37,6 @@ add_executable(ImHex
         res.rc
         )
 
-target_link_libraries(ImHex libglfw3.a libgcc.a libstdc++.a libmagic.a libgnurx.a libtre.a libintl.a libiconv.a shlwapi.lib libwinpthread.a)
+target_link_libraries(ImHex libglfw3.a libgcc.a libstdc++.a libmagic.a libgnurx.a libtre.a libintl.a libiconv.a shlwapi.lib libwinpthread.a libcrypto.a)
 
 

include/crypto.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <hex.hpp>
+
+#include <array>
+#include <optional>
+#include <string>
+
+namespace hex {
+
+    namespace prv { class Provider; }
+
+    u16 crc16(prv::Provider* &data, u64 offset, size_t size, u16 polynomial, u16 init);
+    u32 crc32(prv::Provider* &data, u64 offset, size_t size, u32 polynomial, u32 init);
+
+    std::array<u32, 4> md4(prv::Provider* &data, u64 offset, size_t size);
+    std::array<u32, 4> md5(prv::Provider* &data, u64 offset, size_t size);
+    std::array<u32, 5> sha1(prv::Provider* &data, u64 offset, size_t size);
+    std::array<u32, 7> sha224(prv::Provider* &data, u64 offset, size_t size);
+    std::array<u32, 8> sha256(prv::Provider* &data, u64 offset, size_t size);
+    std::array<u32, 12> sha384(prv::Provider* &data, u64 offset, size_t size);
+    std::array<u32, 16> sha512(prv::Provider* &data, u64 offset, size_t size);
+
+}

include/utils.hpp

@@ -10,7 +10,4 @@ namespace hex {
 
     std::optional<std::string> openFileDialog();
 
-    u16 crc16(u8 *data, size_t size, u16 polynomial, u16 init);
-    u32 crc32(u8 *data, size_t size, u32 polynomial, u32 init);
-    std::array<u32, 4> md5(u8 *data, size_t size);
 }

include/views/view_hashes.hpp

@@ -23,7 +23,7 @@ namespace hex {
         bool m_shouldInvalidate = true;
         int m_currHashFunction = 0;
         int m_hashStart = 0, m_hashEnd = 0;
-        static constexpr const char* HashFunctionNames[] = { "CRC16", "CRC32", "MD5", "SHA-1", "SHA-256" };
+        static constexpr const char* HashFunctionNames[] = { "CRC16", "CRC32", "MD4", "MD5", "SHA-1", "SHA-224", "SHA-256", "SHA-384", "SHA-512" };
     };
 
 }

source/crypto.cpp

@@ -0,0 +1,218 @@
+#include "crypto.hpp"
+
+#include "providers/provider.hpp"
+
+#include <openssl/md4.h>
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+
+#include <array>
+#include <span>
+
+namespace hex {
+
+    u16 crc16(prv::Provider* &data, u64 offset, size_t size, u16 polynomial, u16 init) {
+        const auto table = [polynomial] {
+            std::array<u16, 256> table;
+
+            for (u16 i = 0; i < 256; i++) {
+                u16 crc = 0;
+                u16 c = i;
+
+                for (u16 j = 0; j < 8; j++) {
+                    if (((crc ^ c) & 0x0001U) != 0)
+                        crc = (crc >> 1U) ^ polynomial;
+                    else
+                        crc >>= 1U;
+
+                    c >>= 1U;
+                }
+
+                table[i] = crc;
+            }
+
+            return table;
+        }();
+
+        u16 crc = init;
+
+        std::array<u8, 512> buffer = { 0 };
+
+        for (u64 bufferOffset = 0; offset < size; offset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+
+            for (size_t i = 0; i < readSize; i++) {
+                crc = (crc >> 8) ^ table[(crc ^ u16(buffer[i])) & 0x00FF];
+            }
+        }
+
+        return crc;
+    }
+
+    u32 crc32(prv::Provider* &data, u64 offset, size_t size, u32 polynomial, u32 init) {
+        auto table = [polynomial] {
+            std::array<uint32_t, 256> table = {0};
+
+            for (uint32_t i = 0; i < 256; i++) {
+                uint32_t c = i;
+                for (size_t j = 0; j < 8; j++) {
+                    if (c & 1)
+                        c = polynomial ^ (c >> 1);
+                    else
+                        c >>= 1;
+                }
+                table[i] = c;
+            }
+
+            return table;
+        }();
+
+        uint32_t c = init;
+        std::array<u8, 512> buffer = { 0 };
+
+        for (u64 bufferOffset = 0; offset < size; offset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+
+            for (size_t i = 0; i < readSize; i++) {
+                c = table[(c ^ buffer[i]) & 0xFF] ^ (c >> 8);
+            }
+        }
+
+        return ~c;
+    }
+
+    std::array<u32, 4> md4(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 4> result = { 0 };
+
+        MD4_CTX ctx;
+
+        MD4_Init(&ctx);
+
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            MD4_Update(&ctx, buffer.data(), readSize);
+        }
+
+        MD4_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+    std::array<u32, 4> md5(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 4> result = { 0 };
+
+        MD5_CTX ctx;
+
+        MD5_Init(&ctx);
+
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            MD5_Update(&ctx, buffer.data(), readSize);
+        }
+
+        MD5_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+    std::array<u32, 5> sha1(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 5> result = { 0 };
+
+        SHA_CTX ctx;
+
+        SHA1_Init(&ctx);
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            SHA1_Update(&ctx, buffer.data(), readSize);
+        }
+
+        SHA1_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+    std::array<u32, 7> sha224(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 7> result = { 0 };
+
+        SHA256_CTX ctx;
+
+        SHA224_Init(&ctx);
+
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            SHA224_Update(&ctx, buffer.data(), readSize);
+        }
+
+        SHA224_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+    std::array<u32, 8> sha256(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 8> result = { 0 };
+
+        SHA256_CTX ctx;
+
+        SHA256_Init(&ctx);
+
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            SHA256_Update(&ctx, buffer.data(), readSize);
+        }
+
+        SHA256_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+    std::array<u32, 12> sha384(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 12> result = { 0 };
+
+        SHA512_CTX ctx;
+
+        SHA384_Init(&ctx);
+
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            SHA384_Update(&ctx, buffer.data(), readSize);
+        }
+
+        SHA384_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+    std::array<u32, 16> sha512(prv::Provider* &data, u64 offset, size_t size) {
+        std::array<u32, 16> result = { 0 };
+
+        SHA512_CTX ctx;
+
+        SHA512_Init(&ctx);
+
+        std::array<u8, 512> buffer = { 0 };
+        for (u64 bufferOffset = 0; bufferOffset < size; bufferOffset += buffer.size()) {
+            const u64 readSize = std::min(buffer.size(), size - bufferOffset);
+            data->read(offset + bufferOffset, buffer.data(), readSize);
+            SHA512_Update(&ctx, buffer.data(), readSize);
+        }
+
+        SHA512_Final(reinterpret_cast<u8*>(result.data()), &ctx);
+
+        return result;
+    }
+
+}

source/utils.cpp

@@ -3,12 +3,8 @@
 #include <windows.h>
 #include <shobjidl.h>
 
-#include <array>
-#include <bit>
 #include <codecvt>
-#include <cstring>
 #include <locale>
-#include <vector>
 
 namespace hex {
 
@@ -50,141 +46,4 @@ namespace hex {
         return { };
     }
 
-    u16 crc16(u8 *data, size_t size, u16 polynomial, u16 init) {
-        const auto table = [polynomial] {
-            std::array<u16, 256> table;
-
-            for (u16 i = 0; i < 256; i++) {
-                u16 crc = 0;
-                u16 c = i;
-
-                for (u16 j = 0; j < 8; j++) {
-                    if (((crc ^ c) & 0x0001U) != 0)
-                        crc = (crc >> 1U) ^ polynomial;
-                    else
-                        crc >>= 1U;
-
-                    c >>= 1U;
-                }
-
-                table[i] = crc;
-            }
-
-            return table;
-        }();
-
-        u16 crc = init;
-
-        for (size_t i = 0; i < size; i++) {
-            crc = (crc >> 8) ^ table[(crc ^ u16(*data++)) & 0x00FF];
-        }
-
-        return crc;
-    }
-
-    u32 crc32(u8 *buffer, size_t size, u32 polynomial, u32 init) {
-        auto table = [polynomial] {
-            std::array<uint32_t, 256> table = {0};
-
-            for (uint32_t i = 0; i < 256; i++) {
-                uint32_t c = i;
-                for (size_t j = 0; j < 8; j++) {
-                    if (c & 1)
-                        c = polynomial ^ (c >> 1);
-                    else
-                        c >>= 1;
-                }
-                table[i] = c;
-            }
-
-            return table;
-        }();
-
-        uint32_t c = init;
-        const uint8_t *u = static_cast<const uint8_t *>(buffer);
-
-        for (size_t i = 0; i < size; ++i)
-            c = table[(c ^ u[i]) & 0xFF] ^ (c >> 8);
-
-        return ~c;
-    }
-
-    std::array<u32, 4> md5(u8 *data, size_t size) {
-        constexpr u32 r[] = {   7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
-                                5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20,
-                                4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
-                                6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21
-                            };
-
-        constexpr u32 k[] = {
-                0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
-                0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
-                0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
-                0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
-                0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
-                0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
-                0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
-                0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
-                0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
-                0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
-                0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
-                0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
-                0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
-                0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
-                0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
-                0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
-            };
-
-        std::array<u32, 4> h = { 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476 };
-
-        u32 newSize = ((((size + 8) / 64) + 1) * 64) - 8;
-
-        std::vector<u8> buffer(newSize + 64, 0x00);
-        std::memcpy(buffer.data(), data, size);
-        buffer[size] = 128;
-
-        u32 numBits = 8 * size;
-        std::memcpy(buffer.data() + newSize, &numBits, 4);
-
-        for (s32 offset = 0; offset < newSize; offset += (512/8)) {
-            u32 *w = reinterpret_cast<u32*>(buffer.data() + offset);
-
-            u32 a = h[0];
-            u32 b = h[1];
-            u32 c = h[2];
-            u32 d = h[3];
-
-            for (u32 i = 0; i < 64; i++) {
-                u32 f, g;
-
-                if (i < 16) {
-                    f = (b & c) | ((~b) & d);
-                    g = i;
-                } else if (i < 32) {
-                    f = (d & b) | ((~d) & c);
-                    g = (5 * i + 1) & 0x0F;
-                } else if (i < 48) {
-                    f = b ^ c ^ d;
-                    g = (3 * i + 5) & 0x0F;
-                } else {
-                    f = c ^ (b | (~d));
-                    g = (7 * i) & 0x0F;
-                }
-
-                u32 temp = d;
-                d = c;
-                c = b;
-                b = b + std::rotl(a + f + k[i] + w[g], r[i]);
-                a = temp;
-            }
-
-            h[0] += a;
-            h[1] += b;
-            h[2] += c;
-            h[3] += d;
-        }
-
-        return h;
-    }
-
 }

source/views/view_hashes.cpp

@@ -2,7 +2,7 @@
 
 #include "providers/provider.hpp"
 
-#include "utils.hpp"
+#include "crypto.hpp"
 
 #include <vector>
 
@@ -19,6 +19,11 @@ namespace hex {
     }
 
 
+    static void formatBigHexInt(auto dataArray, char *buffer, size_t bufferSize) {
+        for (int i = 0; i < dataArray.size(); i++)
+            snprintf(buffer + 8 * i, bufferSize - 8 * i, "%08X", __builtin_bswap32(dataArray[i]));
+    }
+
     void ViewHashes::createView() {
         if (!this->m_windowOpen)
             return;
@@ -29,8 +34,8 @@ namespace hex {
 
             if (this->m_dataProvider != nullptr && this->m_dataProvider->isAvailable()) {
 
-                ImGui::Combo("Hash Function", &this->m_currHashFunction, HashFunctionNames,sizeof(HashFunctionNames) / sizeof(const char *));
-                if (ImGui::IsItemEdited()) this->m_shouldInvalidate = true;
+                if (ImGui::Combo("Hash Function", &this->m_currHashFunction, HashFunctionNames,sizeof(HashFunctionNames) / sizeof(const char *)))
+                    this->m_shouldInvalidate = true;
 
                 ImGui::NewLine();
                 ImGui::Separator();
@@ -52,17 +57,10 @@ namespace hex {
 
                 if (this->m_hashEnd >= this->m_hashStart) {
 
-                    std::vector<u8> buffer;
-
-                    if (this->m_shouldInvalidate) {
-                        buffer = std::vector<u8>(this->m_hashEnd - this->m_hashStart + 1, 0x00);
-                        this->m_dataProvider->read(this->m_hashStart, buffer.data(), buffer.size());
-                    }
-
                     switch (this->m_currHashFunction) {
                         case 0: // CRC16
                         {
-                            static int polynomial = 0, init = 0;
+                            int polynomial = 0, init = 0;
 
                             ImGui::InputInt("Initial Value", &init, 0, 0, ImGuiInputTextFlags_CharsHexadecimal);
                             if (ImGui::IsItemEdited()) this->m_shouldInvalidate = true;
@@ -77,14 +75,16 @@ namespace hex {
                             static u16 result = 0;
 
                             if (this->m_shouldInvalidate)
-                                result = crc16(buffer.data(), buffer.size(), polynomial, init);
+                                result = crc16(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1, polynomial, init);
 
-                            ImGui::LabelText("##nolabel", "%X", result);
+                            char buffer[sizeof(result) * 2 + 1];
+                            snprintf(buffer, sizeof(buffer), "%04X", result);
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
                         }
                             break;
                         case 1: // CRC32
                         {
-                            static int polynomial = 0, init = 0;
+                            int polynomial = 0, init = 0;
 
                             ImGui::InputInt("Initial Value", &init, 0, 0, ImGuiInputTextFlags_CharsHexadecimal);
                             if (ImGui::IsItemEdited()) this->m_shouldInvalidate = true;
@@ -99,23 +99,95 @@ namespace hex {
                             static u32 result = 0;
 
                             if (this->m_shouldInvalidate)
-                                result = crc32(buffer.data(), buffer.size(), polynomial, init);
+                                result = crc32(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1, polynomial, init);
 
-                            ImGui::LabelText("##nolabel", "%X", result);
+                            char buffer[sizeof(result) * 2 + 1];
+                            snprintf(buffer, sizeof(buffer), "%08X", result);
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
                         }
                             break;
-                        case 2: // MD5
+                        case 2: // MD4
                         {
                             static std::array<u32, 4> result;
 
                             if (this->m_shouldInvalidate)
-                                result = md5(buffer.data(), buffer.size());
+                                result = md4(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
 
-                            ImGui::LabelText("##nolabel", "%08X%08X%08X%08X",
-                                             __builtin_bswap32(result[0]),
-                                             __builtin_bswap32(result[1]),
-                                             __builtin_bswap32(result[2]),
-                                             __builtin_bswap32(result[3]));
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
+                        }
+                            break;
+                        case 3: // MD5
+                        {
+                            static std::array<u32, 4> result = { 0 };
+
+                            if (this->m_shouldInvalidate)
+                                result = md5(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
+
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
+                        }
+                            break;
+                        case 4: // SHA-1
+                        {
+                            static std::array<u32, 5> result = { 0 };
+
+                            if (this->m_shouldInvalidate)
+                                result = sha1(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
+
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
+                        }
+                            break;
+                        case 5: // SHA-224
+                        {
+                            static std::array<u32, 7> result = { 0 };
+
+                            if (this->m_shouldInvalidate)
+                                result = sha224(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
+
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
+                        }
+                            break;
+                        case 6: // SHA-256
+                        {
+                            static std::array<u32, 8> result;
+
+                            if (this->m_shouldInvalidate)
+                                result = sha256(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
+
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
+                        }
+                            break;
+                        case 7: // SHA-384
+                        {
+                            static std::array<u32, 12> result;
+
+                            if (this->m_shouldInvalidate)
+                                result = sha384(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
+
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
+                        }
+                            break;
+                        case 8: // SHA-512
+                        {
+                            static std::array<u32, 16> result;
+
+                            if (this->m_shouldInvalidate)
+                                result = sha512(this->m_dataProvider, this->m_hashStart, this->m_hashEnd - this->m_hashStart + 1);
+
+                            char buffer[sizeof(result) * 2 + 1];
+                            formatBigHexInt(result, buffer, sizeof(buffer));
+                            ImGui::InputText("Hash value", buffer, ImGuiInputTextFlags_ReadOnly);
                         }
                             break;
                     }