My-Notes-Compilation/Password_validation_pattern.html.html.html at master · Archive-42/My-Notes-Compilation · GitHub

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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
  <head>
    <meta charset="utf-8" />
    <meta name="generator" content="pandoc" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0, user-scalable=yes"
    />
    <title>Password validation pattern</title>
    <style type="text/css">
      code {
        white-space: pre-wrap;
      }
      span.smallcaps {
        font-variant: small-caps;
      }
      span.underline {
        text-decoration: underline;
      }
      div.column {
        display: inline-block;
        vertical-align: top;
        width: 50%;
      }
    </style>
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/css/bootstrap.min.css"
      integrity="sha384-eOJMYsd53ii+scO/bJGFsiCZc+5NDVN2yr8+0RDqr0Ql0h+rP48ckxlpbzKgwra6"
      crossorigin="anonymous"
    />
    <script
      src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/js/bootstrap.min.js"
      integrity="sha384-j0CNLUeiqtyaRmlzUHCPZ+Gy5fQu0dQ6eZ/xAww941Ai1SxSY+0EQqNXNE6DZiVc"
      crossorigin="anonymous"
    ></script>
  </head>
  <body>
    <p>Length checking:</p>
    <p><code>^(?=.{8,20}$).+$</code></p>
    <p>Valid Characters, not repeated thrice:</p>
    <p><code>^(?!.*([\w\d*?!:;])\1{2}).+$</code></p>
    <p>
      <code>^(?!.*([A-Za-z0-9])\1{2})(?=.*[a-z])(?=.*\d)[A-Za-z0-9]+$</code> or
      ^(?=.{8,20}<span class="math inline"
        >$)(?=[^A-Za-z]*[A-Za-z])(?=[^0-9]*[0-9])(?:([\w\d*?!:;])\1?(?!\1))+$</span
      >
      (matches in fewer stepts but needs more steps to fail)
    </p>
    <p>
      Only allow a limited set of symbols (e.g. <code>.-()/</code>), not more
      than two times (non-consecutive)
    </p>
    <p>
      <code
        >^(?!([.()\/-])((?!\1).)+\1((?!\1).)+\1)(?!.*([\/\(\)\.\-])\2)[a-zA-Z\/().\s-]+$</code
      >
    </p>
  </body>
</html>