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      Node.js crypto.pbkdf2Sync

      Node.js crypto.pbkdf2Sync(password, salt, iterations, keylen, digest)版本历史

      版本变更
      v6.0.0Calling this function without passing the digest parameter is deprecated now and will emit a warning.
      v6.0.0The default encoding for password if it is a string changed from binary to utf8.
      v0.9.3新增于: v0.9.3
      • password < string> | < Buffer> ||
      • salt < string> | < Buffer> ||
      • iterations < number>
      • keylen < number>
      • digest < string>
      • Returns: < Buffer>

      Provides a synchronous Password-Based Key Derivation Function 2 (PBKDF2) implementation. A selected HMAC digest algorithm specified by digest is applied to derive a key of the requested byte length (keylen) from the password, salt and iterations.

      If an error occurs an Error will be thrown, otherwise the derived key will be returned as a Buffer.

      If digest is null, ‘sha1’ will be used. This behavior will be deprecated in a future version of Node.js.

      The iterations argument must be a number set as high as possible. The higher the number of iterations, the more secure the derived key will be, but will take a longer amount of time to complete.

      The salt should be as unique as possible. It is recommended that a salt is random and at least 16 bytes long. See NIST SP 800-132 for details.

      const crypto = require('crypto');
      const key = crypto.pbkdf2Sync('secret', 'salt', 100000, 64, 'sha512');
      console.log(key.toString('hex'));  // '3745e48...08d59ae'
      

      The crypto.DEFAULT_ENCODING property may be used to change the way the derivedKey is returned. This property, however, is deprecated and use should be avoided.

      const crypto = require('crypto');
      crypto.DEFAULT_ENCODING = 'hex';
      const key = crypto.pbkdf2Sync('secret', 'salt', 100000, 512, 'sha512');
      console.log(key);  // '3745e48...aa39b34'
      

      An array of supported digest functions can be retrieved using crypto.getHashes().


      更多内容请参考:Node.js crypto 加密,或者通过 点击对应菜单 进行查看;


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