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Expand Up @@ -132,6 +132,7 @@ <h2 id="helpful-tools">Helpful Tools<a class="headerlink" href="#helpful-tools"
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Power of Hashing in modern secure communications
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<p>In today’s world, hashing plays a fundamental role in securing our digital interactions. From protecting passwords to verifying data integrity, hashing is at the core of modern encrypted communications. In this article, we’ll dive into the essentials of hashing, explore its types, and look at its many real-world applications.</p>
<h2 id="what-is-hashing">What is Hashing?<a class="headerlink" href="#what-is-hashing" title="Permanent link"></a></h2>
<p>Hashing is a process that transforms input data (often called plaintext) of any length into a fixed-length string of characters. This transformation produces a “hash,” a unique fingerprint of the original data, typically represented by a string of letters and numbers.</p>
<p>The distinct feature of hashing is its <strong>irreversibility</strong>. Once data is hashed, you cannot easily revert it to its original form. This is because hashing is a <strong>one-way function</strong>. Although it’s technically possible to guess the input by brute force or through algorithmic flaws (in weaker hashing algorithms), good hashing algorithms are designed to make such efforts practically infeasible.</p>
<p>In hashing:</p>
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<li>For a given input, hashing will <strong>always produce the same output</strong> (deterministic).</li>
<li>The hashing process is designed to be computationally <strong>efficient</strong>, producing results quickly even with large inputs.</li>
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<p>Hashing is therefore ideal for many security applications, particularly because of this unique combination of <strong>irreversibility</strong>, <strong>speed</strong>, and <strong>determinism</strong>.</p>
<p>For example, to hash a password like <code>imaginary-password</code> with the SHA-256 hashing algorithm, you can use the following command in Unix-based systems:</p>
<div class="highlight"><pre><span></span><code><span class="nb">echo</span><span class="w"> </span>-n<span class="w"> </span><span class="s2">"imaginary-password"</span><span class="w"> </span><span class="p">|</span><span class="w"> </span>shasum<span class="w"> </span>-a<span class="w"> </span><span class="m">256</span>
</code></pre></div>
<p>This command produces a 256-bit (32-byte) hash value, which is the “fingerprint” of your input text.</p>




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<h4>Published</h4>
<time itemprop="dateCreated" datetime="2024-11-03T10:42:00+01:00">Sun 03 November 2024</time>

<h4>Hashing Series</h4>
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