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POIs there's a hexToString implemented method in Java for Hashing?
 

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  1. POIs there's a hexToString implemented method in Java for Hashing?
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    <p>I'm working in a little method that hashes a String. Looking for information, I could find that MessageDigest can help me to make this task, here</p> <blockquote> <p><a href="https://stackoverflow.com/questions/1515489/java-compute-sha-1">Compute SHA-1 of byte array</a></p> </blockquote> <p>But now I have a question. It seems that the procedure to hash a String in Java it's always the same:</p> <ol> <li>You create your MessageDigester and specify the algorithm to use.</li> <li>You updates the MessageDigester with the String to hash</li> <li>Then you call MessageDigester.digest and you get a byte[].</li> </ol> <p>If one of the most used fonctionnalities of a hash it's to get the String version of this hash, why (in the question I refered and some other) people have to implement their convToHex method?</p> <pre><code>private static String convToHex(byte[] data) { StringBuilder buf = new StringBuilder(); for (int i = 0; i &lt; data.length; i++) { int halfbyte = (data[i] &gt;&gt;&gt; 4) &amp; 0x0F; int two_halfs = 0; do { if ((0 &lt;= halfbyte) &amp;&amp; (halfbyte &lt;= 9)) buf.append((char) ('0' + halfbyte)); else buf.append((char) ('a' + (halfbyte - 10))); halfbyte = data[i] &amp; 0x0F; } while(two_halfs++ &lt; 1); } return buf.toString(); } </code></pre> <p>Is there a Java method that allows me to make this parse between the byte[] returned by the MessageDigester and a String?? If it exists, where is it?? If not, why do I have to make my own method?</p> <p>Thanks.</p>
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