From 1bc6380c6fdd7a9b500422a54bc508ab5557eb46 Mon Sep 17 00:00:00 2001
From: Corentin Thomasset <corentin.thomasset74@gmail.com>
Date: Wed, 3 Aug 2022 13:59:45 +0200
Subject: [PATCH] feat(new-tool): hmac generator

---
 src/tools/hmac-generator/hmac-generator.vue | 98 +++++++++++++++++++++
 src/tools/hmac-generator/index.ts           | 12 +++
 src/tools/index.ts                          |  3 +-
 3 files changed, 112 insertions(+), 1 deletion(-)
 create mode 100644 src/tools/hmac-generator/hmac-generator.vue
 create mode 100644 src/tools/hmac-generator/index.ts

diff --git a/src/tools/hmac-generator/hmac-generator.vue b/src/tools/hmac-generator/hmac-generator.vue
new file mode 100644
index 00000000..73669df8
--- /dev/null
+++ b/src/tools/hmac-generator/hmac-generator.vue
@@ -0,0 +1,98 @@
+<template>
+  <div>
+    <n-form-item label="Plain text to compute the hash">
+      <n-input v-model:value="plainText" type="textarea" placeholder="Enter the text to compute the hash..." />
+    </n-form-item>
+    <n-form-item label="Secret key">
+      <n-input v-model:value="secret" placeholder="Enter the secret key..." />
+    </n-form-item>
+    <n-space item-style="flex:1 1 0">
+      <n-form-item label="Hashing function">
+        <n-select
+          v-model:value="hashFunction"
+          placeholder="Select an hashing function..."
+          :options="Object.keys(algos).map((label) => ({ label, value: label }))"
+        />
+      </n-form-item>
+      <n-form-item label="Output encoding">
+        <n-select
+          v-model:value="encoding"
+          placeholder="Select the result encoding..."
+          :options="[
+            {
+              label: 'Binary (base 2)',
+              value: 'Bin',
+            },
+            {
+              label: 'Hexadecimal (base 16)',
+              value: 'Hex',
+            },
+            {
+              label: 'Base64 (base 64)',
+              value: 'Base64',
+            },
+            {
+              label: 'Base64-url (base 64 with url safe chars)',
+              value: 'Base64url',
+            },
+          ]"
+        />
+      </n-form-item>
+    </n-space>
+    <n-form-item label="HMAC of your text">
+      <n-input readonly :value="hmac" type="textarea" placeholder="The result of the HMAC..." />
+    </n-form-item>
+    <n-space justify="center">
+      <n-button secondary @click="copy()">Copy HMAC</n-button>
+    </n-space>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useCopy } from '@/composable/copy.js';
+import {
+  enc,
+  HmacMD5,
+  HmacRIPEMD160,
+  HmacSHA1,
+  HmacSHA224,
+  HmacSHA256,
+  HmacSHA3,
+  HmacSHA384,
+  HmacSHA512,
+  lib,
+} from 'crypto-js';
+import { computed, ref } from 'vue';
+import { convertHexToBin } from '../hash-text/hash-text.service.js';
+
+const algos = {
+  MD5: HmacMD5,
+  RIPEMD160: HmacRIPEMD160,
+  SHA1: HmacSHA1,
+  SHA3: HmacSHA3,
+  SHA224: HmacSHA224,
+  SHA256: HmacSHA256,
+  SHA384: HmacSHA384,
+  SHA512: HmacSHA512,
+} as const;
+
+type Encoding = keyof typeof enc | 'Bin';
+
+function formatWithEncoding(words: lib.WordArray, encoding: Encoding) {
+  if (encoding === 'Bin') {
+    return convertHexToBin(words.toString(enc.Hex));
+  }
+  return words.toString(enc[encoding]);
+}
+
+const plainText = ref('');
+const secret = ref('');
+const hashFunction = ref<keyof typeof algos>('SHA256');
+const encoding = ref<Encoding>('Hex');
+const hmac = computed(() =>
+  formatWithEncoding(algos[hashFunction.value](plainText.value, secret.value), encoding.value),
+);
+const { copy } = useCopy({ source: hmac });
+</script>
+
+<style lang="less" scoped></style>
diff --git a/src/tools/hmac-generator/index.ts b/src/tools/hmac-generator/index.ts
new file mode 100644
index 00000000..c0ca7da4
--- /dev/null
+++ b/src/tools/hmac-generator/index.ts
@@ -0,0 +1,12 @@
+import { ShortTextRound } from '@vicons/material';
+import { defineTool } from '../tool';
+
+export const tool = defineTool({
+  name: 'Hmac generator',
+  path: '/hmac-generator',
+  description:
+    'Computes a hash-based message authentication code (HMAC) using a secret key and your favorite hashing function.',
+  keywords: ['hmac', 'generator', 'MD5', 'SHA1', 'SHA256', 'SHA224', 'SHA512', 'SHA384', 'SHA3', 'RIPEMD160'],
+  component: () => import('./hmac-generator.vue'),
+  icon: ShortTextRound,
+});
diff --git a/src/tools/index.ts b/src/tools/index.ts
index 6f30200d..a03f273b 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -16,6 +16,7 @@ import { tool as cypher } from './encryption';
 import { tool as etaCalculator } from './eta-calculator';
 import { tool as gitMemo } from './git-memo';
 import { tool as hashText } from './hash-text';
+import { tool as hmacGenerator } from './hmac-generator';
 import { tool as htmlEntities } from './html-entities';
 import { tool as baseConverter } from './integer-base-converter';
 import { tool as jsonViewer } from './json-viewer';
@@ -36,7 +37,7 @@ export const toolsByCategory: ToolCategory[] = [
   {
     name: 'Crypto',
     icon: LockOpen,
-    components: [tokenGenerator, hashText, bcrypt, uuidGenerator, cypher, bip39],
+    components: [tokenGenerator, hashText, bcrypt, uuidGenerator, cypher, bip39, hmacGenerator],
   },
   {
     name: 'Converter',