public ByteString[] SignByteStrings(IUser[] users, params ByteString[] bs)
{
if (bs == null)
{
return(null);
}
if (bs.Length == 0)
{
return(null);
}
if (bs.Length == 1 && bs[0] == null)
{
return(null);
}
byte[] signbytes = new byte[bs.Sum(a => a.Length)];
int start = 0;
foreach (ByteString b in bs)
{
Array.Copy(b.ToByteArray(), 0, signbytes, start, b.Length);
start += b.Length;
}
ByteString[] ret = new ByteString[users.Length];
int ii = -1;
foreach (IUser user in users)
{
// Get the signing identity from the user
ISigningIdentity si = IdentityFactory.GetSigningIdentity(CryptoPrimitives, user);
// generate signature
ret[++ii] = ByteString.CopyFrom(si.Sign(signbytes));
}
return(ret);
}
public byte[] Sign(byte[] b)
{
return(signingIdentity.Sign(b));
}