private byte[][] ComputeRecipientsField(byte[] seed)
{
byte[][] recipientsField = new byte[policy.NumberOfRecipients][];
var it = policy.RecipientsIterator;
int i = 0;
while (it.MoveNext())
{
PublicKeyRecipient recipient = it.Current;
X509Certificate certificate = recipient.X509;
int permission = recipient.Permission.PermissionBytesForPublicKey;
byte[] pkcs7input = new byte[24];
byte one = (byte)(permission);
byte two = (byte)((uint)permission >> 8);
byte three = (byte)((uint)permission >> 16);
byte four = (byte)((uint)permission >> 24);
// put this seed in the pkcs7 input
Array.Copy(seed, 0, pkcs7input, 0, 20);
pkcs7input[20] = four;
pkcs7input[21] = three;
pkcs7input[22] = two;
pkcs7input[23] = one;
var obj = CreateDERForRecipient(pkcs7input, certificate);
recipientsField[i] = obj.GetDerEncoded();
i++;
}
return(recipientsField);
}
/**
* Removes a recipient from the recipients list.
* @param recipient The recipient to remove.
* @return true If a recipient was found and removed.
*/
public bool RemoveRecipient(PublicKeyRecipient recipient)
{
return(recipients.Remove(recipient));
}
/**
* Adds a new recipient to the recipients list.
* @param recipient A new recipient.
*/
public void AddRecipient(PublicKeyRecipient recipient)
{
recipients.Add(recipient);
}
