2021-05-05 10:13:49 -07:00
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---
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id: 58a25c98f9fc0f352b528e7f
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title: 哈希密碼
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challengeType: 2
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forumTopicId: 301553
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dashedName: hashing-your-passwords
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---
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# --description--
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回過頭來看信息安全,你也許記得在數據庫中存儲明文密碼是*絕對*禁止的。 現在,我們需要引入 BCrypt 來解決這個問題。
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2021-06-14 23:47:03 +09:00
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添加 `bcrypt@~5.0.0` 作爲依賴,並在服務端使用它。 你需要在兩個步驟中使用哈希運算:註冊和保存新賬戶,以及登錄時檢查密碼是否正確。
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2021-05-05 10:13:49 -07:00
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目前處理註冊的路由中,我們是這樣把密碼添加到數據庫的:`password: req.body.password`。 保存哈希值的一個簡單方式是在數據庫邏輯中添加 `const hash = bcrypt.hashSync(req.body.password, 12);`,然後把 `req.body.password` 替換爲 `password: hash`。
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最後,在驗證邏輯中,我們已經有這樣一段代碼執行檢查:`if (password !== user.password) { return done(null, false); }`。 現在存儲的密碼 `user.password` 已經是哈希值了。 在對現有代碼進行修改前,注意目前的語句是如何檢查如果密碼**不**匹配,就返回未認證的。 牢記這一點,你的代碼應該是如下,檢查輸入的密碼是否與哈希相對照:
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```js
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if (!bcrypt.compareSync(password, user.password)) {
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return done(null, false);
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}
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```
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當你需要存儲密碼時,這樣做可以有效地提升網站的安全性。
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完成上述要求後,請提交你的頁面鏈接。 如果你遇到了問題,可以參考[這裏](https://gist.github.com/camperbot/dc16cca09daea4d4151a9c36a1fab564)的答案。
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# --hints--
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應存在 BCrypt 依賴。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/package.json').then(
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(data) => {
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var packJson = JSON.parse(data);
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assert.property(
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packJson.dependencies,
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'bcrypt',
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'Your project should list "bcrypt" as a dependency'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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應正確地引入和調用 BCrypt。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/server.js').then(
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(data) => {
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assert.match(
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data,
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/require.*("|')bcrypt\1/gi,
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'You should have required bcrypt'
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);
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assert.match(
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data,
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/bcrypt.hashSync/gi,
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'You should use hash the password in the registration'
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);
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assert.match(
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data,
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/bcrypt.compareSync/gi,
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'You should compare the password to the hash in your strategy'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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# --solutions--
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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