ACA 20201117

<?php
/*
 * message digesting examples
 * Message digesting algorithms are "injective" mathematical
 * functions that will necessarily produce a different
 * output per each different input
 */
$source = $argv[1];
$md5 = md5($source);
$iSizeMd5 = strlen($md5);

$strMsgMd5 =
    sprintf(
        "algo: %s\ninput: %s\nouput: %s (%d symbols)\n",
        "MD5",
        $source,
        $md5,
        $iSizeMd5
    );

echo $strMsgMd5;

//*****************

echo PHP_EOL;

$sha1 = hash("sha1", $source);
$iSizeSha1 = strlen($sha1);

$strMsgSha1 =
    sprintf(
        "algo: %s\ninput: %s\nouput: %s (%d symbols)\n",
        "sha1",
        $source,
        $sha1,
        $iSizeSha1
    );

echo $strMsgSha1;

//*****************

echo PHP_EOL;

$sha256 = hash("sha256", $source);
$iSizeSha256 = strlen($sha256);

$strMsgSha256 =
    sprintf(
        "algo: %s\ninput: %s\nouput: %s (%d symbols)\n",
        "sha256",
        $source,
        $sha256,
        $iSizeSha256
    );

echo $strMsgSha256;

//**

echo PHP_EOL;

$sha512 = hash("sha512", $source);
$iSizeSha512 = strlen($sha512);

$strMsgSha512 =
    sprintf(
        "algo: %s\ninput: %s\nouput: %s (%d symbols)\n",
        "sha512",
        $source,
        $sha512,
        $iSizeSha512
    );

echo $strMsgSha512;