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RSA/PrivateKey: add comment to explain things

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terrafrost 2022-02-14 17:59:41 -06:00
parent 3460c70e3a
commit 91a674a781
1 changed files with 1 additions and 1 deletions
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phpseclib/Crypt/RSA/PrivateKey.php
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@ -228,7 +228,7 @@ class PrivateKey extends RSA implements Common\PrivateKey
$h = $this->hash->hash($m2);
$ps = str_repeat(chr(0), $emLen - $sLen - $this->hLen - 2);
$db = $ps . chr(1) . $salt;
$dbMask = $this->mgf1($h, $emLen - $this->hLen - 1);
$dbMask = $this->mgf1($h, $emLen - $this->hLen - 1); // ie. stlren($db)
$maskedDB = $db ^ $dbMask;
$maskedDB[0] = ~chr(0xFF << ($emBits & 7)) & $maskedDB[0];
$em = $maskedDB . $h . chr(0xBC);