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<?php
namespace Risan\OAuth1\Request;
class NonceGenerator implements NonceGeneratorInterface
{
/**
* {@inheritDoc}
*/
public function generate($length = 32)
$nonce = '';
while (($currentNonceLength = strlen($nonce)) < $length) {
$size = $length - $currentNonceLength;
$randomString = $this->base64EncodedRandomBytes($size);
$nonce .= substr($this->extractAlphaNumericFromBase64EncodedString($randomString), 0, $size);
}
return $nonce;
* Get cryptographically secure base64 encoded random bytes.
*
* @param int $length
* @return string
public function base64EncodedRandomBytes($length)
return base64_encode(random_bytes($length));
* Extract the alphanumeric characters from base64 encoded string.
* @param string $string
public function extractAlphaNumericFromBase64EncodedString($string)
return str_replace(['/', '+', '='], '', $string);
risan /
oauth1
