/**
* Initialize from PrivateKeyInfo.
*
* Encrypts PrivateKeyInfo with given pre-derived key.
*
* @param PrivateKeyInfo $pki
* @param PBEAlgorithmIdentifier $algo
* @param string $key
* @param Crypto $crypto
* @return self
*/
public static function encryptPrivateKeyInfoWithDerivedKey(PrivateKeyInfo $pki, PBEAlgorithmIdentifier $algo, $key, Crypto $crypto)
{
$data = $pki->toDER();
$scheme = PBEScheme::fromAlgorithmIdentifier($algo, $crypto);
$ciphertext = $scheme->encryptWithKey($data, $key);
return new self($algo, $ciphertext);
}
