/**
* Break a public or private key down into its constituent components
*
* @access public
* @param string $key
* @param string $password optional
* @return array
*/
static function load($key, $password = '')
{
if (!is_string($key)) {
return false;
}
$components = ['isPublicKey' => strpos($key, 'PUBLIC') !== false];
$key = parent::load($key, $password);
if ($key === false) {
return false;
}
$asn1 = new ASN1();
$decoded = $asn1->decodeBER($key);
if (empty($decoded)) {
return false;
}
$key = $asn1->asn1map($decoded[0], RSAPrivateKey);
if (is_array($key)) {
$components += ['modulus' => $key['modulus'], 'publicExponent' => $key['publicExponent'], 'privateExponent' => $key['privateExponent'], 'primes' => [1 => $key['prime1'], $key['prime2']], 'exponents' => [1 => $key['exponent1'], $key['exponent2']], 'coefficients' => [2 => $key['coefficient']]];
if ($key['version'] == 'multi') {
foreach ($key['otherPrimeInfos'] as $primeInfo) {
$components['primes'][] = $primeInfo['prime'];
$components['exponents'][] = $primeInfo['exponent'];
$components['coefficients'][] = $primeInfo['coefficient'];
}
}
return $components;
}
$key = $asn1->asn1map($decoded[0], RSAPublicKey);
return is_array($key) ? $components + $key : false;
}
