diff --git a/src/views/SendFileView.vue b/src/views/SendFileView.vue
index 414d6f5..b0955cd 100644
--- a/src/views/SendFileView.vue
+++ b/src/views/SendFileView.vue
@@ -1,49 +1,32 @@
 <template>
-  <div
-    class="min-h-screen flex items-center justify-center p-4 overflow-hidden transition-colors duration-300"
-    @paste.prevent="handlePaste"
-  >
-    <div
-      class="rounded-3xl shadow-2xl overflow-hidden border w-full max-w-md transition-colors duration-300"
-      :class="[
-        isDarkMode
-          ? 'bg-white bg-opacity-10 backdrop-filter backdrop-blur-xl border-gray-700'
-          : 'bg-white border-gray-200'
-      ]"
-    >
+  <div class="min-h-screen flex items-center justify-center p-4 overflow-hidden transition-colors duration-300"
+    @paste.prevent="handlePaste">
+    <div class="rounded-3xl shadow-2xl overflow-hidden border w-full max-w-md transition-colors duration-300" :class="[
+      isDarkMode
+        ? 'bg-white bg-opacity-10 backdrop-filter backdrop-blur-xl border-gray-700'
+        : 'bg-white border-gray-200'
+    ]">
       <div class="p-8">
-        <h2
-          class="text-3xl font-extrabold text-center mb-8 cursor-pointer transition-colors duration-300"
-          :class="[
-            isDarkMode
-              ? 'text-transparent bg-clip-text bg-gradient-to-r from-indigo-300 via-purple-300 to-pink-300'
-              : 'text-indigo-600'
-          ]"
-          @click="toRetrieve"
-        >
+        <h2 class="text-3xl font-extrabold text-center mb-8 cursor-pointer transition-colors duration-300" :class="[
+          isDarkMode
+            ? 'text-transparent bg-clip-text bg-gradient-to-r from-indigo-300 via-purple-300 to-pink-300'
+            : 'text-indigo-600'
+        ]" @click="toRetrieve">
           {{ config.name }}
         </h2>
         <form @submit.prevent="handleSubmit" class="space-y-8">
           <!-- 发送类型选择 -->
           <div class="flex justify-center space-x-4 mb-6">
-            <button
-              type="button"
-              @click="sendType = 'file'"
-              :class="[
-                'px-4 py-2 rounded-lg',
-                sendType === 'file' ? 'bg-indigo-600 text-white' : 'bg-gray-700 text-gray-300'
-              ]"
-            >
+            <button type="button" @click="sendType = 'file'" :class="[
+              'px-4 py-2 rounded-lg',
+              sendType === 'file' ? 'bg-indigo-600 text-white' : 'bg-gray-700 text-gray-300'
+            ]">
               发送文件
             </button>
-            <button
-              type="button"
-              @click="sendType = 'text'"
-              :class="[
-                'px-4 py-2 rounded-lg',
-                sendType === 'text' ? 'bg-indigo-600 text-white' : 'bg-gray-700 text-gray-300'
-              ]"
-            >
+            <button type="button" @click="sendType = 'text'" :class="[
+              'px-4 py-2 rounded-lg',
+              sendType === 'text' ? 'bg-indigo-600 text-white' : 'bg-gray-700 text-gray-300'
+            ]">
               发送文本
             </button>
             <!-- <button
@@ -67,37 +50,23 @@
                   isDarkMode
                     ? 'bg-gray-800 bg-opacity-50 border-gray-600 hover:border-indigo-500'
                     : 'bg-gray-100 border-gray-300 hover:border-indigo-500'
-                ]"
-                @click="triggerFileUpload"
-                @dragover.prevent
-                @drop.prevent="handleFileDrop"
-              >
-                <input
-                  id="file-upload"
-                  type="file"
-                  class="hidden"
-                  @change="handleFileUpload"
-                  ref="fileInput"
-                />
+                ]" @click="triggerFileUpload" @dragover.prevent @drop.prevent="handleFileDrop">
+                <input id="file-upload" type="file" class="hidden" @change="handleFileUpload" ref="fileInput" />
                 <div class="absolute inset-0 w-full h-full" v-if="uploadProgress > 0">
                   <BorderProgressBar :progress="uploadProgress" />
                 </div>
-                <UploadCloudIcon
-                  :class="[
-                    'w-16 h-16 transition-colors duration-300',
-                    isDarkMode
-                      ? 'text-gray-400 group-hover:text-indigo-400'
-                      : 'text-gray-600 group-hover:text-indigo-600'
-                  ]"
-                />
-                <p
-                  :class="[
-                    'mt-4 text-sm transition-colors duration-300 w-full text-center',
-                    isDarkMode
-                      ? 'text-gray-400 group-hover:text-indigo-400'
-                      : 'text-gray-600 group-hover:text-indigo-600'
-                  ]"
-                >
+                <UploadCloudIcon :class="[
+                  'w-16 h-16 transition-colors duration-300',
+                  isDarkMode
+                    ? 'text-gray-400 group-hover:text-indigo-400'
+                    : 'text-gray-600 group-hover:text-indigo-600'
+                ]" />
+                <p :class="[
+                  'mt-4 text-sm transition-colors duration-300 w-full text-center',
+                  isDarkMode
+                    ? 'text-gray-400 group-hover:text-indigo-400'
+                    : 'text-gray-600 group-hover:text-indigo-600'
+                ]">
                   <span class="block truncate">
                     {{ selectedFile ? selectedFile.name : '点击或拖放文件到此处上传' }}
                   </span>
@@ -110,18 +79,12 @@
             <div v-else key="text" class="grid grid-cols-1 gap-8">
               <!-- 文本输入区域 -->
               <div v-if="sendType === 'text'" class="flex flex-col">
-                <textarea
-                  id="text-content"
-                  v-model="textContent"
-                  rows="7"
-                  :class="[
-                    'flex-grow px-4 py-3 rounded-xl placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-indigo-500 transition duration-300 resize-none',
-                    isDarkMode
-                      ? 'bg-gray-800 bg-opacity-50 text-white'
-                      : 'bg-white text-gray-900 border border-gray-300'
-                  ]"
-                  placeholder="在此输入要发送的文本..."
-                ></textarea>
+                <textarea id="text-content" v-model="textContent" rows="7" :class="[
+                  'flex-grow px-4 py-3 rounded-xl placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-indigo-500 transition duration-300 resize-none',
+                  isDarkMode
+                    ? 'bg-gray-800 bg-opacity-50 text-white'
+                    : 'bg-white text-gray-900 border border-gray-300'
+                ]" placeholder="在此输入要发送的文本..."></textarea>
               </div>
             </div>
           </transition>
@@ -130,51 +93,38 @@
             <label :class="['text-sm font-medium', isDarkMode ? 'text-gray-300' : 'text-gray-700']">
               过期方式
             </label>
-            <select
-              v-model="expirationMethod"
-              :class="[
-                'px-4 py-2 rounded-xl focus:outline-none focus:ring-2 focus:ring-indigo-500',
-                isDarkMode
-                  ? 'bg-gray-800 bg-opacity-50 text-white'
-                  : 'bg-white text-gray-900 border border-gray-300'
-              ]"
-            >
+            <select v-model="expirationMethod" :class="[
+              'px-4 py-2 rounded-xl focus:outline-none focus:ring-2 focus:ring-indigo-500',
+              isDarkMode
+                ? 'bg-gray-800 bg-opacity-50 text-white'
+                : 'bg-white text-gray-900 border border-gray-300'
+            ]">
               <option v-for="item in config.expireStyle" :value="item" :key="item">
                 {{ getUnit(item) }}
               </option>
             </select>
             <div v-if="expirationMethod !== 'forever'" class="flex items-center space-x-2">
               <div class="relative flex-grow">
-                <input
-                  v-model="expirationValue"
-                  type="number"
-                  :placeholder="getPlaceholder()"
-                  :class="[
-                    'w-full px-4 py-2 pr-16 rounded-xl placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-indigo-500',
-                    isDarkMode
-                      ? 'bg-gray-800 bg-opacity-50 text-white'
-                      : 'bg-white text-gray-900 border border-gray-300'
-                  ]"
-                />
-                <span
-                  :class="[
-                    'absolute right-3 top-1/2 transform -translate-y-1/2',
-                    isDarkMode ? 'text-gray-300' : 'text-gray-700'
-                  ]"
-                >
+                <input v-model="expirationValue" type="number" :placeholder="getPlaceholder()" :class="[
+                  'w-full px-4 py-2 pr-16 rounded-xl placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-indigo-500',
+                  isDarkMode
+                    ? 'bg-gray-800 bg-opacity-50 text-white'
+                    : 'bg-white text-gray-900 border border-gray-300'
+                ]" />
+                <span :class="[
+                  'absolute right-3 top-1/2 transform -translate-y-1/2',
+                  isDarkMode ? 'text-gray-300' : 'text-gray-700'
+                ]">
                   {{ getUnit() }}
                 </span>
               </div>
             </div>
           </div>
           <!-- 提交按钮 -->
-          <button
-            type="submit"
-            class="w-full bg-gradient-to-r from-indigo-500 via-purple-500 to-pink-500 text-white font-bold py-4 px-6 rounded-lg focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-opacity-50 transition-all duration-300 transform hover:scale-105 hover:shadow-lg relative overflow-hidden group"
-          >
+          <button type="submit"
+            class="w-full bg-gradient-to-r from-indigo-500 via-purple-500 to-pink-500 text-white font-bold py-4 px-6 rounded-lg focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-opacity-50 transition-all duration-300 transform hover:scale-105 hover:shadow-lg relative overflow-hidden group">
             <span
-              class="absolute top-0 left-0 w-full h-full bg-white opacity-0 group-hover:opacity-20 transition-opacity duration-300"
-            ></span>
+              class="absolute top-0 left-0 w-full h-full bg-white opacity-0 group-hover:opacity-20 transition-opacity duration-300"></span>
             <span class="relative z-10 flex items-center justify-center text-lg">
               <SendIcon class="w-6 h-6 mr-2" />
               <span>安全寄送</span>
@@ -188,22 +138,14 @@
         </div>
       </div>
 
-      <div
-        class="px-8 py-4 bg-opacity-50 flex justify-between items-center"
-        :class="[isDarkMode ? 'bg-gray-800' : 'bg-gray-100']"
-      >
-        <span
-          class="text-sm flex items-center"
-          :class="[isDarkMode ? 'text-gray-300' : 'text-gray-800']"
-        >
+      <div class="px-8 py-4 bg-opacity-50 flex justify-between items-center"
+        :class="[isDarkMode ? 'bg-gray-800' : 'bg-gray-100']">
+        <span class="text-sm flex items-center" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-800']">
           <ShieldCheckIcon class="w-4 h-4 mr-1 text-green-400" />
           安全加密
         </span>
-        <button
-          @click="toggleDrawer"
-          class="text-sm hover:text-indigo-300 transition duration-300 flex items-center"
-          :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
-        >
+        <button @click="toggleDrawer" class="text-sm hover:text-indigo-300 transition duration-300 flex items-center"
+          :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']">
           发件记录
           <ClipboardListIcon class="w-4 h-4 ml-1" />
         </button>
@@ -212,84 +154,56 @@
 
     <!-- 抽屉式发件记录 -->
     <transition name="drawer">
-      <div
-        v-if="showDrawer"
+      <div v-if="showDrawer"
         class="fixed inset-y-0 right-0 w-full sm:w-120 bg-opacity-70 backdrop-filter backdrop-blur-xl shadow-2xl z-50 overflow-hidden flex flex-col"
-        :class="[isDarkMode ? 'bg-gray-900' : 'bg-white']"
-      >
-        <div
-          class="flex justify-between items-center p-6 border-b"
-          :class="[isDarkMode ? 'border-gray-700' : 'border-gray-200']"
-        >
+        :class="[isDarkMode ? 'bg-gray-900' : 'bg-white']">
+        <div class="flex justify-between items-center p-6 border-b"
+          :class="[isDarkMode ? 'border-gray-700' : 'border-gray-200']">
           <h3 class="text-2xl font-bold" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
             发件记录
           </h3>
-          <button
-            @click="toggleDrawer"
-            class="hover:text-white transition duration-300"
-            :class="[isDarkMode ? 'text-gray-400' : 'text-gray-800']"
-          >
+          <button @click="toggleDrawer" class="hover:text-white transition duration-300"
+            :class="[isDarkMode ? 'text-gray-400' : 'text-gray-800']">
             <XIcon class="w-6 h-6" />
           </button>
         </div>
         <div class="flex-grow overflow-y-auto p-6">
           <transition-group name="list" tag="div" class="space-y-4">
-            <div
-              v-for="record in sendRecords"
-              :key="record.id"
+            <div v-for="record in sendRecords" :key="record.id"
               class="bg-opacity-50 rounded-lg p-4 flex items-center shadow-md hover:shadow-lg transition duration-300 transform hover:scale-102"
-              :class="[isDarkMode ? 'bg-gray-800 hover:bg-gray-700' : 'bg-gray-100 hover:bg-white']"
-            >
+              :class="[isDarkMode ? 'bg-gray-800 hover:bg-gray-700' : 'bg-gray-100 hover:bg-white']">
               <div class="flex-shrink-0 mr-4">
-                <FileIcon
-                  class="w-10 h-10"
-                  :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
-                />
+                <FileIcon class="w-10 h-10" :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']" />
               </div>
               <div class="flex-grow min-w-0 mr-4">
-                <p
-                  class="font-medium text-lg truncate"
-                  :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
-                >
+                <p class="font-medium text-lg truncate" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
                   {{ record.filename ? record.filename : 'Text' }}
                 </p>
-                <p
-                  class="text-sm truncate"
-                  :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']"
-                >
+                <p class="text-sm truncate" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']">
                   {{ record.date }} · {{ record.size }}
                 </p>
               </div>
               <div class="flex-shrink-0 flex space-x-2">
-                <button
-                  @click="copyRetrieveLink(record.retrieveCode)"
-                  class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
-                  :class="[
+                <button @click="copyRetrieveLink(record.retrieveCode)"
+                  class="p-2 rounded-full hover:bg-opacity-20 transition duration-300" :class="[
                     isDarkMode
                       ? 'hover:bg-blue-400 text-blue-400'
                       : 'hover:bg-blue-100 text-blue-600'
-                  ]"
-                >
+                  ]">
                   <ClipboardCopyIcon class="w-5 h-5" />
                 </button>
-                <button
-                  @click="viewDetails(record)"
-                  class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
-                  :class="[
+                <button @click="viewDetails(record)"
+                  class="p-2 rounded-full hover:bg-opacity-20 transition duration-300" :class="[
                     isDarkMode
                       ? 'hover:bg-green-400 text-green-400'
                       : 'hover:bg-green-100 text-green-600'
-                  ]"
-                >
+                  ]">
                   <EyeIcon class="w-5 h-5" />
                 </button>
-                <button
-                  @click="deleteRecord(record.id)"
-                  class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
-                  :class="[
+                <button @click="deleteRecord(record.id)"
+                  class="p-2 rounded-full hover:bg-opacity-20 transition duration-300" :class="[
                     isDarkMode ? 'hover:bg-red-400 text-red-400' : 'hover:bg-red-100 text-red-600'
-                  ]"
-                >
+                  ]">
                   <TrashIcon class="w-5 h-5" />
                 </button>
               </div>
@@ -301,53 +215,34 @@
 
     <!-- 记录详情弹窗 -->
     <transition name="fade">
-      <div
-        v-if="selectedRecord"
-        class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50"
-      >
+      <div v-if="selectedRecord" class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
         <div
           class="p-8 rounded-2xl max-w-md w-full mx-4 shadow-2xl transform transition-all duration-300 ease-out backdrop-filter backdrop-blur-lg bg-opacity-70"
-          :class="[isDarkMode ? 'bg-gray-800' : 'bg-white']"
-        >
-          <h3
-            class="text-2xl font-bold mb-6"
-            :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
-          >
+          :class="[isDarkMode ? 'bg-gray-800' : 'bg-white']">
+          <h3 class="text-2xl font-bold mb-6" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
             文件详情
           </h3>
           <div class="space-y-4">
             <div class="flex items-center">
-              <FileIcon
-                class="w-6 h-6 mr-3"
-                :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
-              />
+              <FileIcon class="w-6 h-6 mr-3" :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']" />
               <p :class="[isDarkMode ? 'text-gray-300' : 'text-gray-800']">
                 <span class="font-medium">文件名：</span>{{ selectedRecord.filename }}
               </p>
             </div>
             <div class="flex items-center">
-              <CalendarIcon
-                class="w-6 h-6 mr-3"
-                :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
-              />
+              <CalendarIcon class="w-6 h-6 mr-3" :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']" />
               <p :class="[isDarkMode ? 'text-gray-300' : 'text-gray-800']">
                 <span class="font-medium">发送日期：</span>{{ selectedRecord.date }}
               </p>
             </div>
             <div class="flex items-center">
-              <HardDriveIcon
-                class="w-6 h-6 mr-3"
-                :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
-              />
+              <HardDriveIcon class="w-6 h-6 mr-3" :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']" />
               <p :class="[isDarkMode ? 'text-gray-300' : 'text-gray-800']">
                 <span class="font-medium">文件大小：</span>{{ selectedRecord.size }}
               </p>
             </div>
             <div class="flex items-center">
-              <ClockIcon
-                class="w-6 h-6 mr-3"
-                :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
-              />
+              <ClockIcon class="w-6 h-6 mr-3" :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']" />
               <p :class="[isDarkMode ? 'text-gray-300' : 'text-gray-800']">
                 <span class="font-medium">过期时间：</span>{{ selectedRecord.expiration }}
               </p>
@@ -357,16 +252,12 @@
           <!-- 取件码和二维码部分 -->
           <div class="mt-6 flex justify-between items-center">
             <div class="flex flex-col items-center w-1/2 pr-2">
-              <h4
-                class="text-lg font-semibold mb-3"
-                :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
-              >
+              <h4 class="text-lg font-semibold mb-3" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
                 取件码
               </h4>
               <div
                 class="bg-gray-100 p-3 rounded-lg shadow-md cursor-pointer hover:bg-gray-200 transition-colors duration-300 w-full text-center"
-                @click="copyRetrieveCode(selectedRecord.retrieveCode)"
-              >
+                @click="copyRetrieveCode(selectedRecord.retrieveCode)">
                 <p class="text-2xl font-bold text-indigo-600">{{ selectedRecord.retrieveCode }}</p>
               </div>
               <p class="mt-2 text-sm" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']">
@@ -374,10 +265,7 @@
               </p>
             </div>
             <div class="flex flex-col items-center w-1/2 pl-2">
-              <h4
-                class="text-lg font-semibold mb-3"
-                :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
-              >
+              <h4 class="text-lg font-semibold mb-3" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
                 二维码
               </h4>
               <div class="bg-white p-2 rounded-lg shadow-md">
@@ -389,10 +277,8 @@
             </div>
           </div>
 
-          <button
-            @click="selectedRecord = null"
-            class="mt-8 w-full bg-gradient-to-r from-indigo-500 to-purple-600 text-white px-6 py-3 rounded-lg font-medium hover:from-indigo-600 hover:to-purple-700 focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-opacity-50 transition duration-300 transform hover:scale-105"
-          >
+          <button @click="selectedRecord = null"
+            class="mt-8 w-full bg-gradient-to-r from-indigo-500 to-purple-600 text-white px-6 py-3 rounded-lg font-medium hover:from-indigo-600 hover:to-purple-700 focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-opacity-50 transition duration-300 transform hover:scale-105">
             关闭
           </button>
         </div>
@@ -454,27 +340,56 @@ const triggerFileUpload = () => {
 const handleFileUpload = async (event: Event) => {
   const target = event.target as HTMLInputElement
   if (target.files && target.files.length > 0) {
-    selectedFile.value = target.files[0]
-    fileHash.value = await calculateFileHash(selectedFile.value)
+    const file = target.files[0]
+    if (!config.openUpload && localStorage.getItem('token') === null) {
+      alertStore.showAlert('游客上传功能已关闭', 'error')
+      return
+    }
+    if (file.size > config.uploadSize) {
+      alertStore.showAlert(`文件大小超过限制 (${getStorageUnit(config.uploadSize)})`, 'error')
+      return
+    }
+
+    selectedFile.value = file
+    fileHash.value = await calculateFileHash(file)
     console.log(fileHash.value)
   }
 }
 
 const handleFileDrop = async (event: DragEvent) => {
   if (event.dataTransfer?.files && event.dataTransfer.files.length > 0) {
-    selectedFile.value = event.dataTransfer.files[0]
-    fileHash.value = await calculateFileHash(selectedFile.value)
+    const file = event.dataTransfer.files[0]
+    if (!config.openUpload && localStorage.getItem('token') === null) {
+      alertStore.showAlert('游客上传功能已关闭', 'error')
+      return
+    }
+    if (file.size > config.uploadSize) {
+      alertStore.showAlert(`文件大小超过限制 (${getStorageUnit(config.uploadSize)})`, 'error')
+      return
+    }
+
+    selectedFile.value = file
+    fileHash.value = await calculateFileHash(file)
   }
 }
 
 const handlePaste = async (event: ClipboardEvent) => {
   const items = event.clipboardData?.items
   if (!items) return
+  if (config.openUpload===0 && localStorage.getItem('token') === null) {
+    alertStore.showAlert('游客上传功能已关闭', 'error')
+    return
+  }
 
   for (const item of items) {
     if (item.kind === 'file') {
       const file = item.getAsFile()
       if (file) {
+        if (file.size > config.uploadSize) {
+          alertStore.showAlert(`文件大小超过限制 (${getStorageUnit(config.uploadSize)})`, 'error')
+          return
+        }
+
         selectedFile.value = file
         fileHash.value = await calculateFileHash(file)
         alertStore.showAlert('已从剪贴板添加文件：' + file.name, 'success')
@@ -493,7 +408,6 @@ const calculateFileHash = async (file: File): Promise<string> => {
 
     fileReader.onload = async (e) => {
       const chunk = new Uint8Array(e.target!.result as ArrayBuffer)
-      // 计算当前切片的 SHA256
       const hashBuffer = await crypto.subtle.digest('SHA-256', chunk)
       const hashArray = Array.from(new Uint8Array(hashBuffer))
       const hashHex = hashArray.map((b) => b.toString(16).padStart(2, '0')).join('')