diff --git a/flask-ui/src/layout/components/Sidebar/index.vue b/flask-ui/src/layout/components/Sidebar/index.vue
index 2fa7a8a..08422f0 100644
--- a/flask-ui/src/layout/components/Sidebar/index.vue
+++ b/flask-ui/src/layout/components/Sidebar/index.vue
@@ -23,13 +23,19 @@ const {isCollapse} = storeToRefs(isCollapseStore)
           </el-icon>
           <span>统计</span>
         </el-menu-item>
-        <el-menu-item index="3" disabled>
+        <el-menu-item index="3" route="byte-to-hex">
+          <el-icon>
+            <Menu/>
+          </el-icon>
+          <span>字节对象转Hex</span>
+        </el-menu-item>
+        <el-menu-item index="4" disabled>
           <el-icon>
             <document/>
           </el-icon>
           <span>Navigator Three</span>
         </el-menu-item>
-        <el-menu-item index="4">
+        <el-menu-item index="5">
           <el-icon>
             <setting/>
           </el-icon>
diff --git a/flask-ui/src/router/index.ts b/flask-ui/src/router/index.ts
index 1e4ff95..b59d6bb 100644
--- a/flask-ui/src/router/index.ts
+++ b/flask-ui/src/router/index.ts
@@ -19,6 +19,11 @@ const router = createRouter({
           name: 'About',
           component: () => import('../views/AboutView.vue'),
         },
+        {
+          path: 'byte-to-hex',
+          name: 'ByteToHex',
+          component: () => import('../views/ByteToHexView.vue'),
+        },
       ],
     },
     {
diff --git a/flask-ui/src/views/ByteToHexView.vue b/flask-ui/src/views/ByteToHexView.vue
new file mode 100644
index 0000000..5647235
--- /dev/null
+++ b/flask-ui/src/views/ByteToHexView.vue
@@ -0,0 +1,402 @@
+<template>
+  <div class="container">
+    <div class="card">
+      <h1>🔑 字节对象 → Hex 密钥</h1>
+      <p class="sub">
+        将键为数字索引的 JSON 对象转换为 32 位十六进制字符串（适用于 AES‑128 密钥）
+      </p>
+
+      <label for="jsonInput">输入 JSON 对象</label>
+      <textarea
+        id="jsonInput"
+        v-model="inputText"
+        placeholder='例如：{"0":14,"1":3,"2":121,...}'
+        @keydown.ctrl.enter="performConversion"
+        @keydown.meta.enter="performConversion"
+      ></textarea>
+
+      <div class="actions">
+        <button @click="performConversion">🔄 转换</button>
+        <button class="secondary" :disabled="!copyEnabled" @click="copyResult">
+          📋 复制 Hex
+        </button>
+        <span class="copy-feedback" :class="{ show: copyFeedbackVisible }"
+          >已复制！</span
+        >
+      </div>
+
+      <div class="result-area">
+        <div class="result-label">
+          <span>转换结果</span>
+        </div>
+        <div
+          class="result-box"
+          :class="resultClass"
+          v-text="resultText"
+        ></div>
+      </div>
+
+      <div class="example-hint">
+        💡 点击 <button class="link-btn" @click="loadExample">加载示例</button> 快速体验
+      </div>
+    </div>
+
+    <div class="footer">
+      按数字键升序取值，每个字节补零为两位十六进制
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+
+// 示例数据
+const EXAMPLE_OBJ: Record<string, number> = {
+  '0': 14,
+  '1': 3,
+  '2': 121,
+  '3': 117,
+  '4': 7,
+  '5': 245,
+  '6': 22,
+  '7': 34,
+  '8': 136,
+  '9': 163,
+  '10': 201,
+  '11': 114,
+  '12': 195,
+  '13': 230,
+  '14': 109,
+  '15': 204,
+}
+
+// 响应式数据
+const inputText = ref<string>('')
+const resultText = ref<string>('等待转换…')
+const resultClass = ref<string>('') // 用于 success / error
+const copyFeedbackVisible = ref<boolean>(false)
+const copyEnabled = ref<boolean>(false)
+
+// 核心转换函数
+function convertToHex(obj: Record<string, unknown>): string {
+  // 获取所有键并转为数字排序
+  const keys = Object.keys(obj)
+    .map((k) => Number(k))
+    .sort((a, b) => a - b)
+
+  // 检查是否有非数字键
+  if (keys.some((k) => isNaN(k))) {
+    throw new Error('对象包含非数字键，请确保键为 "0", "1", … 格式')
+  }
+
+  // 检查长度是否为16
+  if (keys.length !== 16) {
+    throw new Error(`期望 16 个字节，实际获得 ${keys.length} 个`)
+  }
+
+  // 按顺序取值并转为两位十六进制
+  const hex = keys
+    .map((key) => {
+      const val = obj[key]
+      if (typeof val !== 'number' || isNaN(val)) {
+        throw new Error(`键 "${key}" 对应的值不是有效数字 (${val})`)
+      }
+      if (val < 0 || val > 255) {
+        throw new Error(`键 "${key}" 的值 ${val} 超出字节范围 (0-255)`)
+      }
+      return val.toString(16).padStart(2, '0')
+    })
+    .join('')
+
+  return hex
+}
+
+// 执行转换
+function performConversion(): void {
+  const raw = inputText.value.trim()
+  if (!raw) {
+    resultText.value = '⚠️ 请输入 JSON 数据'
+    resultClass.value = 'error'
+    copyEnabled.value = false
+    copyFeedbackVisible.value = false
+    return
+  }
+
+  try {
+    const obj = JSON.parse(raw)
+    if (typeof obj !== 'object' || obj === null || Array.isArray(obj)) {
+      throw new Error('输入必须是 JSON 对象（不是数组或原始类型）')
+    }
+    const hex = convertToHex(obj)
+    resultText.value = hex
+    resultClass.value = 'success'
+    copyEnabled.value = true
+    copyFeedbackVisible.value = false
+  } catch (err: any) {
+    resultText.value = `❌ 转换失败：${err.message}`
+    resultClass.value = 'error'
+    copyEnabled.value = false
+    copyFeedbackVisible.value = false
+  }
+}
+
+// 加载示例
+function loadExample(): void {
+  inputText.value = JSON.stringify(EXAMPLE_OBJ, null, 2)
+  performConversion() // 自动转换
+}
+
+// 复制结果
+function copyResult(): void {
+  const text = resultText.value
+  if (!text || resultClass.value === 'error') return
+
+  if (navigator.clipboard && navigator.clipboard.writeText) {
+    navigator.clipboard
+      .writeText(text)
+      .then(() => {
+        copyFeedbackVisible.value = true
+        setTimeout(() => (copyFeedbackVisible.value = false), 2000)
+      })
+      .catch(() => {
+        fallbackCopy(text)
+      })
+  } else {
+    fallbackCopy(text)
+  }
+}
+
+function fallbackCopy(text: string): void {
+  const textarea = document.createElement('textarea')
+  textarea.value = text
+  document.body.appendChild(textarea)
+  textarea.select()
+  try {
+    document.execCommand('copy')
+    copyFeedbackVisible.value = true
+    setTimeout(() => (copyFeedbackVisible.value = false), 2000)
+  } catch (_) {
+    alert('复制失败，请手动复制')
+  }
+  document.body.removeChild(textarea)
+}
+
+// 组件挂载时加载示例
+onMounted(() => {
+  loadExample()
+})
+</script>
+
+<style lang="scss" scoped>
+// 变量（可根据需要调整）
+$primary: #3b82f6;
+$primary-hover: #2563eb;
+$bg: #f6f8fa;
+$card-bg: #ffffff;
+$text-dark: #1f2937;
+$text-gray: #6b7280;
+$border: #d1d5db;
+$radius: 16px;
+
+* {
+  box-sizing: border-box;
+  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
+}
+
+// 根容器：占满视口，flex列
+.container {
+  min-height: calc(100vh - 211px);
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  background: $bg;
+  padding: 20px;
+}
+
+// 卡片区域：flex:1 撑满剩余空间，居中显示
+.card {
+  background: $card-bg;
+  //max-width: 720px;
+  width: 100%;
+  border-radius: $radius;
+  //box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
+  padding: 28px 32px;
+  margin: 0 auto;
+  flex: 1; // 让卡片占据尽可能多的空间，但最大宽度限制
+  align-self: center; // 水平居中
+  width: 100%;
+}
+
+h1 {
+  font-size: 22px;
+  font-weight: 600;
+  margin-top: 0;
+  margin-bottom: 8px;
+  color: $text-dark;
+}
+
+.sub {
+  color: $text-gray;
+  font-size: 14px;
+  margin-top: -4px;
+  margin-bottom: 20px;
+}
+
+label {
+  font-weight: 500;
+  font-size: 14px;
+  color: #374151;
+  display: block;
+  margin-bottom: 6px;
+}
+
+textarea {
+  width: 100%;
+  height: 200px;
+  padding: 12px 14px;
+  border: 1px solid $border;
+  border-radius: 10px;
+  font-family: 'Menlo', 'Cascadia Code', 'Consolas', monospace;
+  font-size: 13px;
+  line-height: 1.6;
+  resize: vertical;
+  transition: border 0.2s, background 0.2s;
+  background: #fafbfc;
+
+  &:focus {
+    border-color: $primary;
+    outline: none;
+    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
+    background: white;
+  }
+}
+
+.actions {
+  display: flex;
+  gap: 12px;
+  margin: 18px 0 14px;
+  flex-wrap: wrap;
+  align-items: center;
+}
+
+button {
+  background: $primary;
+  color: white;
+  border: none;
+  padding: 10px 24px;
+  border-radius: 8px;
+  font-weight: 500;
+  font-size: 14px;
+  cursor: pointer;
+  transition: background 0.15s, transform 0.1s;
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+
+  &:hover {
+    background: $primary-hover;
+  }
+  &:active {
+    transform: scale(0.96);
+  }
+  &.secondary {
+    background: #e5e7eb;
+    color: $text-dark;
+    &:hover {
+      background: #d1d5db;
+    }
+  }
+  &:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+    transform: none;
+    &:hover {
+      background: #e5e7eb;
+    }
+  }
+  &.link-btn {
+    background: none;
+    border: none;
+    color: $primary;
+    font-weight: 500;
+    padding: 0;
+    font-size: 13px;
+    text-decoration: underline;
+    display: inline;
+    &:hover {
+      color: $primary-hover;
+      background: none;
+      transform: none;
+    }
+  }
+}
+
+.copy-feedback {
+  font-size: 13px;
+  color: #10b981;
+  margin-left: 12px;
+  opacity: 0;
+  transition: opacity 0.3s;
+  &.show {
+    opacity: 1;
+  }
+}
+
+.result-area {
+  margin-top: 8px;
+}
+
+.result-label {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 4px;
+  span {
+    font-weight: 500;
+    font-size: 14px;
+    color: #374151;
+  }
+}
+
+.result-box {
+  background: #f3f4f6;
+  border-radius: 10px;
+  padding: 14px 16px;
+  font-family: 'Menlo', 'Cascadia Code', 'Consolas', monospace;
+  font-size: 14px;
+  word-break: break-all;
+  min-height: 48px;
+  border: 1px solid #e5e7eb;
+  color: $text-dark;
+  transition: background 0.2s, border-color 0.2s;
+
+  &.error {
+    background: #fee2e2;
+    border-color: #fca5a5;
+    color: #991b1b;
+  }
+  &.success {
+    background: #ecfdf5;
+    border-color: #6ee7b7;
+  }
+}
+
+.example-hint {
+  font-size: 13px;
+  color: $text-gray;
+  margin-top: 6px;
+}
+
+// 底部：置于页面最底部，自动与卡片分离
+.footer {
+  margin-top: auto; // 自动推到底部
+  font-size: 13px;
+  color: #9ca3af;
+  text-align: center;
+  padding: 16px 0 8px;
+  border-top: 1px solid #e5e7eb;
+  max-width: 720px;
+  width: 100%;
+  align-self: center;
+}
+</style>