public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(
string algorithm,
char[] passPhrase,
byte[] salt,
int iterationCount,
PrivateKeyInfo keyInfo)
{
if (!PbeUtilities.IsPbeAlgorithm(algorithm))
{
throw new ArgumentException("attempt to use non-PBE algorithm with PBE EncryptedPrivateKeyInfo generation");
}
IBufferedCipher cipher = PbeUtilities.CreateEngine(algorithm) as IBufferedCipher;
if (cipher == null)
{
// TODO Throw exception?
}
Asn1Encodable parameters = PbeUtilities.GenerateAlgorithmParameters(
algorithm, salt, iterationCount);
ICipherParameters keyParameters = PbeUtilities.GenerateCipherParameters(
algorithm, passPhrase, parameters);
cipher.Init(true, keyParameters);
byte[] keyBytes = keyInfo.GetEncoded();
byte[] encoding = cipher.DoFinal(keyBytes);
DerObjectIdentifier oid = PbeUtilities.GetObjectIdentifier(algorithm);
AlgorithmIdentifier algID = new AlgorithmIdentifier(oid, parameters);
return(new EncryptedPrivateKeyInfo(algID, encoding));
}