[{"data":1,"prerenderedAt":1079},["ShallowReactive",2],{"site-info":3,"post-tech-1047":7,"related-post-tag-index":48},{"name":4,"description":5,"url":6},"アイ・エル・アール","フリーランスWEB制作","https:\u002F\u002Filr.jp\u002Fwp\u002F",{"ID":8,"title":9,"post_type":10,"post_type_label":11,"url":12,"date":13,"modified":14,"thumbnail":15,"thumb":15,"tag":16,"slug":37,"excerpt":38,"content":39,"simple_css":40,"adjacent":41},1047,"Vue.jsで暗号化・復号化を実装する","tech","Tech Blog","\u002Ftech\u002F1047\u002F","2023.05.04","2024.06.25","\u002Fuploads\u002F2023\u002F05\u002Fvuejs.png",[17,21,25,29,33],{"name":18,"slug":19,"url":20},"JavaScript","javascript","\u002Ftag\u002Fjavascript\u002F",{"name":22,"slug":23,"url":24},"Vue","vue","\u002Ftag\u002Fvue\u002F",{"name":26,"slug":27,"url":28},"プラグイン","plugin","\u002Ftag\u002Fplugin\u002F",{"name":30,"slug":31,"url":32},"復号化","decryption","\u002Ftag\u002Fdecryption\u002F",{"name":34,"slug":35,"url":36},"暗号化","encryption","\u002Ftag\u002Fencryption\u002F","vue-js%e3%81%a7%e6%9a%97%e5%8f%b7%e5%8c%96%e3%83%bb%e8%a4%87%e5%90%88%e5%8c%96%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b","概要 下記githubのソースをもとにVue.js用にプラグイン化しました。 https:\u002F\u002Fgist.github.com\u002FAgoreddah\u002F511864e2c00da064586523b3087c30e2 ソース  […]","\n\u003Ch3 class=\"wp-block-heading\">概要\u003C\u002Fh3>\n\n\n\n\u003Cp class=\"wp-block-paragraph\">下記githubのソースをもとにVue.js用にプラグイン化しました。\u003C\u002Fp>\n\n\n\n\u003Cp class=\"wp-block-paragraph\">\u003Ca href=\"https:\u002F\u002Fgist.github.com\u002FAgoreddah\u002F511864e2c00da064586523b3087c30e2\" target=\"_blank\" rel=\"noreferrer noopener\">https:\u002F\u002Fgist.github.com\u002FAgoreddah\u002F511864e2c00da064586523b3087c30e2\u003C\u002Fa>\u003C\u002Fp>\n\n\n\n\u003Chr class=\"wp-block-separator has-alpha-channel-opacity\"\u002F>\n\n\n\n\u003Ch3 class=\"wp-block-heading\">ソース\u003C\u002Fh3>\n\n\n\n\u003Cdiv class=\"hcb_wrap\">\u003Cpre class=\"prism line-numbers lang-js\" data-file=\"encrypter.js\" data-lang=\"JavaScript\">\u003Ccode>\u002F\u002F load dependencies\nconst crypto = require('crypto');\n\n'use strict';\n\nconst APP_KEY = 暗号化キー;\n\nconst SETTINGS = {\n  key : Buffer.from(APP_KEY.substring(7), 'base64'),\n  sha : 'sha256',\n  mode : 'AES-256-CBC'\n}\n\nconst Crypto = {\n  install(Vue) {\n    Vue.prototype.crypto = {\n      \u002F**\n       * Caclulate MAC.\n       * Paylod needs to be decoded to JSON with getJsonPayload(payload)\n       * @param {Object} payload with iv & value\n       * @param {String} key\n       *\u002F\n      calculateMac(payload, key){\n        let hashedData = this.hash(payload['iv'], payload['value'])\n        return this.hashHmac(hashedData, key);\n      },\n      \u002F**\n       * Decrypts payload with master key\n       * @param {String} Payload - base64 encoded json with iv, value, mac information\n       *\u002F\n      decrypt(payload){\n        if(payload !== ''){\n          try {\n            let _payload = this.getJsonPayload(payload);\n            let _iv = Buffer.from(_payload['iv'], 'base64');\n            let decipher = crypto.createDecipheriv(SETTINGS.mode, SETTINGS.key, _iv);\n            let decrypted = decipher.update(_payload['value'], 'base64', 'utf8');\n            decrypted += decipher.final('utf8');\n            return this.hashDeserialize(decrypted);\n          }catch (e) {\n            return payload;\n          }\n        }else{\n          return '';\n        }\n      },\n      \u002F**\n       * Create payload encrypted with master key.\n       * Payload contains: iv, value, mac\n       * @param {String} data to be encrypted\n       * @return {String} Base64 encdoded payload\n       *\u002F\n      encrypt(data){\n        let serializedValue = this.hashSerialize(data);\n        try{\n          let _iv = crypto.randomBytes(16);\n          let base64_iv = _iv.toString('base64');\n          let cipher = crypto.createCipheriv(SETTINGS.mode, SETTINGS.key, _iv);\n          let encrypted = cipher.update(serializedValue, 'utf8', 'base64');\n          encrypted += cipher.final('base64');\n          let _mac = this.hash(base64_iv, encrypted);\n\n          let payloadObject = {\n            'iv' : base64_iv,\n            'value' : encrypted,\n            'mac' : _mac\n          }\n\n          let _payload = JSON.stringify(payloadObject);\n          return Buffer.from(_payload).toString('base64');\n        }\n        catch(e){\n          throw new Error('Cannot encrypt data provided !');\n        }\n      },\n      \u002F**\n       * Get JSON object from payload.\n       * Payload needs to be base64 encoded and must contains iv, value, mac attributes.\n       * MAC is validated\n       * @param {String} payload\n       * @return {Object} Data with iv, value, mac\n       *\u002F\n      getJsonPayload(payload){\n        if(payload === undefined || payload === ''){\n          throw new Error('Payload MUST NOT be empty !');\n        }\n\n        if(typeof payload !== 'string'){\n          throw new Error('Payload MUST be string !');\n        }\n\n        try{\n          this._payload = JSON.parse(Buffer.from(payload, 'base64'));\n        }\n        catch(e){\n          throw new Error('Payload cannot be parsed !');\n        }\n\n        if(!this.isValidPayload(this._payload)){\n          throw new Error('Payload is not valid !');\n        }\n\n        if(!this.isValidMac(this._payload)){\n          throw new Error('Mac is not valid !!');\n        }\n        return this._payload;\n      },\n      \u002F**\n       * Hash function.\n       * Combines initialization vector (iv) with data to be hashed (value).\n       * Uses master key to hash results\n       * @param {String} iv Initialization vector\n       * @param {String} value Data\n       *\u002F\n      hash(iv, value){\n        if(iv === undefined || iv === ''){\n          throw new Error('Iv is not defined !');\n        }\n        if(value === undefined || value === ''){\n          throw new Error('Value is not defined !');\n        }\n        let data = String(iv) + String(value);\n        return this.hashHmac(data, SETTINGS.key);\n      },\n      \u002F**\n       * Crypto function to hash data with given key\n       * @param {String} data\n       * @param {String} key\n       *\u002F\n      hashHmac(data, key){\n        let hmac = crypto.createHmac(SETTINGS.sha, key);\n        hmac.update(data);\n        return hmac.digest('hex');\n      },\n      \u002F**\n       * MAC validation function.\n       * Payload must be decoded to JSON\n       * @param {Object} payload\n       *\u002F\n      isValidMac(payload){\n        let bytes = crypto.randomBytes(16),\n          calculatedMac = this.calculateMac(payload, bytes);\n\n        let originalMac = this.hashHmac(payload['mac'], bytes);\n        return originalMac === calculatedMac;\n      },\n      \u002F**\n       * Payload validation function.\n       * Payload must be decoded to JSON\n       * @param {Object} payload\n       *\u002F\n      isValidPayload(payload){\n        return (\n          Object.prototype.hasOwnProperty.call(payload, "iv") &&\n          Object.prototype.hasOwnProperty.call(payload, "value") &&\n          Object.prototype.hasOwnProperty.call(payload, "mac")\n        );\n      },\n      hashDeserialize(data) {\n        let str = String(data)\n        return str.substring(str.indexOf(':', 2) + 2, str.lastIndexOf(';') - 1)\n      },\n      hashSerialize(data){\n        if(typeof data !== 'string'){\n          throw new Error('Data to be serialized must be type of string !');\n        }\n        let str = String(data);\n        return 's:'+str.length+':"'+str+'";';\n      }\n\n    }\n  }\n}\n\nexport default Crypto;\n\n\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\n\n\n\n\u003Cdiv class=\"hcb_wrap\">\u003Cpre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\">\u003Ccode>const APP_KEY = 暗号化キー;\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\n\n\n\n\u003Cp class=\"wp-block-paragraph\">暗号化キーは直接書いても良いですし、.envファイルに設定しても良いと思います。\u003C\u002Fp>\n\n\n\n\u003Chr class=\"wp-block-separator has-alpha-channel-opacity\"\u002F>\n\n\n\n\u003Ch3 class=\"wp-block-heading\">Vue.jsのプラグイン登録\u003C\u002Fh3>\n\n\n\n\u003Cdiv class=\"hcb_wrap\">\u003Cpre class=\"prism line-numbers lang-js\" data-file=\"main.js\" data-lang=\"JavaScript\">\u003Ccode>import Crypto from '.\u002Fplugins\u002Fencrypter';\nVue.use(Crypto);\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\n\n\n\n\u003Chr class=\"wp-block-separator has-alpha-channel-opacity\"\u002F>\n\n\n\n\u003Ch3 class=\"wp-block-heading\">暗号化\u003C\u002Fh3>\n\n\n\n\u003Cdiv class=\"hcb_wrap\">\u003Cpre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\">\u003Ccode>this.crypto.encrypt('暗号化したい文字列');\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\n\n\n\n\u003Chr class=\"wp-block-separator has-alpha-channel-opacity\"\u002F>\n\n\n\n\u003Ch3 class=\"wp-block-heading\">復号化\u003C\u002Fh3>\n\n\n\n\u003Cdiv class=\"hcb_wrap\">\u003Cpre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\">\u003Ccode>this.crypto.decrypt('this.crypto.encryptで暗号化された文字列');\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Fdiv>\n","",{"next":42,"previous":45},{"ID":43,"title":18,"post_type":10,"date":44},1061,"2023.05.18",{"ID":46,"title":47,"post_type":10,"date":13},1027,"Youtubeフィードを使用してWordPressにチャンネルの動画一覧を表示する。",[49,65,175,307,324,332,352,370,387,402,589,596,616,623,645,661,668,725,732,759,765,789,917,943,953,1002,1022,1031,1045,1053,1059,1065],{"name":50,"slug":51,"url":52,"posts":53},"Android","android","\u002Ftag\u002Fandroid\u002F",[54],{"ID":55,"title":56,"post_type":10,"post_type_label":11,"url":57,"date":58,"modified":59,"thumbnail":60,"thumb":60,"tag":61,"slug":63,"excerpt":64},298,"Android ChromeをUSBでパソコンに繋いでデバッグする方法","\u002Ftech\u002F298\u002F","2022.10.03","2022.10.10","\u002Fuploads\u002F2022\u002F10\u002Fthumbnail_298-1200x675.jpg",[62],{"name":50,"slug":51,"url":52},"%ef%bf%bc","Android 側 ※OSのバージョンによって異なる場合があります。 ホーム画面などにある「設定」アイコンをタップ 「設定」にある、「デバイス情報」をタップ 「ビルド番号」を数回タップしたあと、「PIN番号」を入力。 「 […]",{"name":66,"slug":67,"url":68,"posts":69},"API","api","\u002Ftag\u002Fapi\u002F",[70,88,106,122,143,162],{"ID":71,"title":72,"post_type":10,"post_type_label":11,"url":73,"date":74,"modified":74,"thumbnail":75,"thumb":75,"tag":76,"slug":86,"excerpt":87},2756,"WordPressサイトをヘッドレスCMS化し、Nuxt.js + AI開発で静的サイト運用に移行した話","\u002Ftech\u002F2756\u002F","2026.06.12","\u002Fuploads\u002F2026\u002F06\u002Fimg_2756-1200x675.png",[77,78,82],{"name":66,"slug":67,"url":68},{"name":79,"slug":80,"url":81},"Nuxt","nuxt","\u002Ftag\u002Fnuxt\u002F",{"name":83,"slug":84,"url":85},"WordPress","wordpress","\u002Ftag\u002Fwordpress\u002F","wordpress%e3%82%b5%e3%82%a4%e3%83%88%e3%82%92%e3%83%98%e3%83%83%e3%83%89%e3%83%ac%e3%82%b9cms%e5%8c%96%e3%81%97%e3%80%81nuxt-js-ai%e9%96%8b%e7%99%ba%e3%81%a7%e9%9d%99%e7%9a%84%e3%82%b5%e3%82%a4","これまでこのサイトは、WordPressを使って運用していました。 WordPressは記事の管理や更新がしやすく、長く使われているCMSです。プラグインも豊富で、管理画面から多くのことが完結します。一方で、サーバー上で […]",{"ID":89,"title":90,"post_type":10,"post_type_label":11,"url":91,"date":92,"modified":92,"thumbnail":93,"thumb":93,"tag":94,"slug":104,"excerpt":105},1737,"WordPressに気象庁APIで天気を表示する","\u002Ftech\u002F1737\u002F","2023.07.24","\u002Fuploads\u002F2023\u002F07\u002Fweather_api-1200x731.webp",[95,96,99,100],{"name":66,"slug":67,"url":68},{"name":97,"slug":97,"url":98},"php","\u002Ftag\u002Fphp\u002F",{"name":83,"slug":84,"url":85},{"name":101,"slug":102,"url":103},"気象庁","jma","\u002Ftag\u002Fjma\u002F","wordpress%e3%81%ab%e6%b0%97%e8%b1%a1%e5%ba%81api%e3%81%a7%e5%a4%a9%e6%b0%97%e3%82%92%e8%a1%a8%e7%a4%ba%e3%81%99%e3%82%8b","概要 気象庁が提供しているAPIから天気情報をWordPressに表示します。 エリア情報 エリア情報は下記URLから確認することができます。 https:\u002F\u002Fwww.jma.go.jp\u002Fbosai\u002Fcommon\u002Fcon […]",{"ID":107,"title":108,"post_type":10,"post_type_label":11,"url":109,"date":110,"modified":110,"thumbnail":111,"thumb":111,"tag":112,"slug":120,"excerpt":121},1131,"WordPressで月送りのカレンダーを実装（祝日対応）","\u002Ftech\u002F1131\u002F","2023.06.15","\u002Fuploads\u002F2023\u002F06\u002Fbnr_calendar.png",[113,114,118,119],{"name":66,"slug":67,"url":68},{"name":115,"slug":116,"url":117},"Google","google","\u002Ftag\u002Fgoogle\u002F",{"name":97,"slug":97,"url":98},{"name":83,"slug":84,"url":85},"wordpress%e3%81%a7%e6%9c%88%e9%80%81%e3%82%8a%e3%81%ae%e3%82%ab%e3%83%ac%e3%83%b3%e3%83%80%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85%ef%bc%88%e7%a5%9d%e6%97%a5%e5%af%be%e5%bf%9c%ef%bc%89","概要 月送りが出来て、投稿日にリンクと祝日の表示がされるカレンダーを実装します。 下記のようにAPIにしてHTML書き出しにしています。 https:\u002F\u002Filr.jp\u002Fapi\u002Fcalendar.php 祝日部 […]",{"ID":46,"title":47,"post_type":10,"post_type_label":11,"url":123,"date":13,"modified":124,"thumbnail":125,"thumb":125,"tag":126,"slug":141,"excerpt":142},"\u002Ftech\u002F1027\u002F","2026.06.04","\u002Fuploads\u002F2022\u002F10\u002Fyoutube_id.png",[127,128,132,133,137],{"name":66,"slug":67,"url":68},{"name":129,"slug":130,"url":131},"RSS","rss","\u002Ftag\u002Frss\u002F",{"name":83,"slug":84,"url":85},{"name":134,"slug":135,"url":136},"YouTube","youtube","\u002Ftag\u002Fyoutube\u002F",{"name":138,"slug":139,"url":140},"フィード","feed","\u002Ftag\u002Ffeed\u002F","youtube%e3%83%95%e3%82%a3%e3%83%bc%e3%83%89%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6wordpress%e3%81%ab%e3%83%81%e3%83%a3%e3%83%b3%e3%83%8d%e3%83%ab%e3%81%ae%e5%8b%95%e7%94%bb%e4%b8%80%e8%a6%a7","概要 Youtubeにはフィードを取得する方法があります。 今回はYoutubeフィードを使用してWordPressにチャンネルの動画一覧を表示させます。 フィードURL チャンネルIDは以前投稿した記事で確認することが […]",{"ID":144,"title":145,"post_type":10,"post_type_label":11,"url":146,"date":147,"modified":148,"thumbnail":149,"thumb":149,"tag":150,"slug":160,"excerpt":161},521,"Instagram Graph APIのビジネスアカウントIDとアクセストークン取得","\u002Ftech\u002F521\u002F","2022.11.01","2023.08.08","\u002Fuploads\u002F2022\u002F11\u002Fimg_instagram.webp",[151,152,156],{"name":66,"slug":67,"url":68},{"name":153,"slug":154,"url":155},"Instagram","instagram","\u002Ftag\u002Finstagram\u002F",{"name":157,"slug":158,"url":159},"Node.js","node-js","\u002Ftag\u002Fnode-js\u002F","instagram-graph-api%e3%81%ae%e3%83%93%e3%82%b8%e3%83%8d%e3%82%b9%e3%82%a2%e3%82%ab%e3%82%a6%e3%83%b3%e3%83%88id%e3%81%a8%e3%82%a2%e3%82%af%e3%82%bb%e3%82%b9%e3%83%88%e3%83%bc%e3%82%af%e3%83%b3","概要 WEBサイトにインスタグラムの写真を埋め込むために必要なビジネスアカウントIDとアクセストークン取得方法です。3段階目のアクセストークンまでの発行をスクリプトにしました。 用意するもの 必要なデータ ソース git […]",{"ID":163,"title":164,"post_type":10,"post_type_label":11,"url":165,"date":166,"modified":167,"thumbnail":168,"thumb":168,"tag":169,"slug":173,"excerpt":174},464,"WordPressにYouTubeの動画一覧を表示する","\u002Ftech\u002F464\u002F","2022.10.28","2022.12.02","\u002Fuploads\u002F2022\u002F10\u002Fwordpress-youtube-1200x684.png",[170,171,172],{"name":66,"slug":67,"url":68},{"name":83,"slug":84,"url":85},{"name":134,"slug":135,"url":136},"wordpress%e3%81%abyoutube%e3%81%ae%e5%8b%95%e7%94%bb%e4%b8%80%e8%a6%a7%e3%82%92%e8%a1%a8%e7%a4%ba%e3%81%99%e3%82%8b","概要 簡易的にWordPressにYouTubeの動画一覧を表示する方法 ※事前にYouTubeのAPIキーの取得をする必要があります。 検索部分 「youtube_data」の部分はTransients APIで保存す […]",{"name":176,"slug":177,"url":178,"posts":179},"CSS","css","\u002Ftag\u002Fcss\u002F",[180,191,205,216,225,235,246,257,267,277,287,297],{"ID":181,"title":182,"post_type":10,"post_type_label":11,"url":183,"date":184,"modified":185,"thumbnail":186,"thumb":186,"tag":187,"slug":189,"excerpt":190},1904,"ブラウザの横幅に合わせてフォントサイズを変更する。","\u002Ftech\u002F1904\u002F","2023.11.28","2023.12.15","\u002Fuploads\u002F2022\u002F10\u002Filr.png",[188],{"name":176,"slug":177,"url":178},"%e3%83%96%e3%83%a9%e3%82%a6%e3%82%b6%e3%81%ae%e6%a8%aa%e5%b9%85%e3%81%ab%e5%90%88%e3%82%8f%e3%81%9b%e3%81%a6%e3%83%95%e3%82%a9%e3%83%b3%e3%83%88%e3%82%b5%e3%82%a4%e3%82%ba%e3%82%92%e5%a4%89%e6%9b%b4","概要 CSSでブラウザの横幅に合わせて、フォントサイズを変更します。方法はいろいろありますので、こちらは私の個人的な方法で備忘録になります。 施策 CSS htmlに設定します。大元であるhtmlに設定することでその中の […]",{"ID":192,"title":193,"post_type":10,"post_type_label":11,"url":194,"date":195,"modified":148,"thumbnail":196,"thumb":196,"tag":197,"slug":203,"excerpt":204},1769,"HTMLメール用にインラインCSSに変換する","\u002Ftech\u002F1769\u002F","2023.07.27","\u002Fuploads\u002F2023\u002F07\u002Fimg_mail.webp",[198,199],{"name":176,"slug":177,"url":178},{"name":200,"slug":201,"url":202},"HTML","html","\u002Ftag\u002Fhtml\u002F","html%e3%83%a1%e3%83%bc%e3%83%ab%e7%94%a8%e3%81%ab%e3%82%a4%e3%83%b3%e3%83%a9%e3%82%a4%e3%83%b3css%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b","概要 OutlookのレンダリングエンジンがEdgeになるみたいですが、まだまだ、テーブルコーディング、インラインCSSが主流でコーディングが面倒で悩まされます。 今回はメルマガのHTMLメール用のコーディングをする際に […]",{"ID":206,"title":207,"post_type":10,"post_type_label":11,"url":208,"date":209,"modified":210,"thumbnail":211,"thumb":211,"tag":212,"slug":214,"excerpt":215},889,"CSSで三角形を作る(clip-path版)","\u002Ftech\u002F889\u002F","2022.12.28","2026.06.03","\u002Fuploads\u002F2021\u002F09\u002Fimg_css-triangle-1.png",[213],{"name":176,"slug":177,"url":178},"css%e3%81%a7%e4%b8%89%e8%a7%92%e5%bd%a2%e3%82%92%e4%bd%9c%e3%82%8bclip-path%e7%89%88","概要 リンクのアイコンなどに使用する三角アイコンをCSSだけで作ります。以前、CSSで三角形を作る(border版)の記事を書いたのですが、その方法のclip-path版です。 ソース .triangleにスタイルを設定 […]",{"ID":217,"title":218,"post_type":10,"post_type_label":11,"url":219,"date":167,"modified":167,"thumbnail":220,"thumb":220,"tag":221,"slug":223,"excerpt":224},837,"要素の境界線を斜めにする","\u002Ftech\u002F837\u002F","\u002Fuploads\u002F2022\u002F12\u002Fimg837-1200x638.png",[222],{"name":176,"slug":177,"url":178},"%e8%a6%81%e7%b4%a0%e3%81%ae%e5%a2%83%e7%95%8c%e7%b7%9a%e3%82%92%e6%96%9c%e3%82%81%e3%81%ab%e3%81%99%e3%82%8b","概要 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[…]",{"ID":258,"title":259,"post_type":10,"post_type_label":11,"url":260,"date":261,"modified":262,"thumbnail":211,"thumb":211,"tag":263,"slug":265,"excerpt":266},228,"CSSで三角形を作る(border版)","\u002Ftech\u002F228\u002F","2021.09.11","2026.06.02",[264],{"name":176,"slug":177,"url":178},"css%e3%81%a7%e4%b8%89%e8%a7%92%e5%bd%a2%e3%82%92%e4%bd%9c%e3%82%8b","概要 リンクのアイコンなどに使用する三角アイコンをCSSだけで作ります。 私自身はclip-path版を推しています。こちらの記事もどうぞ。 https:\u002F\u002Filr.jp\u002Ftech\u002F889 実装結果 解説 な 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