/// <summary>
/// Encrypt a specific `Ballot` in the context of a specific `CiphertextElectionContext`
///
/// This method accepts a ballot representation that only includes `True` selections.
/// It will fill missing selections for a contest with `False` values, and generate `placeholder`
/// selections to represent the number of seats available for a given contest. By adding `placeholder`
/// votes
///
/// This method also allows for ballots to exclude passing contests for which the voter made no selections.
/// It will fill missing contests with `False` selections and generate `placeholder` selections that are marked `True`.
///
/// <param name="ballot">the selection in the valid input form</param>
/// <param name="internalManifest">the `InternalManifest` which defines this ballot's structure</param>
/// <param name="context">all the cryptographic context for the election</param>
/// <param name="ballotCodeSeed">Hash from previous ballot or hash from device</param>
/// <param name="nonce">an optional value used to seed the `Nonce` generated for this ballot
/// if this value is not provided, the secret generating mechanism of the OS provides its own</param>
/// <param name="shouldVerifyProofs">specify if the proofs should be verified prior to returning (default True)</param>
/// <returns>A `CiphertextBallot`</returns>
/// </summary>
public static unsafe CiphertextBallot Ballot(
PlaintextBallot ballot,
InternalManifest internalManifest,
CiphertextElectionContext context,
ElementModQ ballotCodeSeed,
ElementModQ nonce = null,
bool shouldVerifyProofs = true)
{
if (nonce == null)
{
var status = NativeInterface.Encrypt.Ballot(
ballot.Handle, internalManifest.Handle, context.Handle,
ballotCodeSeed.Handle, shouldVerifyProofs,
out NativeCiphertextBallot ciphertext);
if (status != Status.ELECTIONGUARD_STATUS_SUCCESS)
{
Console.WriteLine($"Encrypt Ballot Error Status: {status}");
}
return(new CiphertextBallot(ciphertext));
}
else
{
var status = NativeInterface.Encrypt.Ballot(
ballot.Handle, internalManifest.Handle, context.Handle,
ballotCodeSeed.Handle, nonce.Handle, shouldVerifyProofs,
out NativeCiphertextBallot ciphertext);
if (status != Status.ELECTIONGUARD_STATUS_SUCCESS)
{
Console.WriteLine($"EncryptWithNonce Ballot Error Status: {status}");
}
return(new CiphertextBallot(ciphertext));
}
}
public unsafe EncryptionMediator(
InternalManifest manifest,
CiphertextElectionContext context,
EncryptionDevice device)
{
var status = NativeInterface.EncryptionMediator.New(
manifest.Handle, context.Handle, device.Handle, out Handle);
if (status != Status.ELECTIONGUARD_STATUS_SUCCESS)
{
Console.WriteLine($"EncryptionMediator New Error Status: {status}");
}
}
protected override bool Free()
{
if (IsClosed)
{
return(true);
}
var status = InternalManifest.Free(this);
if (status != Status.ELECTIONGUARD_STATUS_SUCCESS)
{
Console.WriteLine($"InternalManifest Error Free: {status}");
return(false);
}
return(true);
}
/// <summary>
/// Encrypt a specific `Ballot` in the context of a specific `CiphertextElectionContext`
///
/// This method accepts a ballot representation that only includes `True` selections.
/// It will fill missing selections for a contest with `False` values, and generate `placeholder`
/// selections to represent the number of seats available for a given contest. By adding `placeholder`
/// votes
///
/// This method also allows for ballots to exclude passing contests for which the voter made no selections.
/// It will fill missing contests with `False` selections and generate `placeholder` selections that are marked `True`.
///
/// This version of the encrypt method returns a `compact` version of the ballot that includes a minimal representation
/// of the plaintext ballot along with the crypto parameters that are required to expand the ballot
///
/// <param name="ballot">the selection in the valid input form</param>
/// <param name="internalManifest">the `InternalManifest` which defines this ballot's structure</param>
/// <param name="context">all the cryptographic context for the election</param>
/// <param name="ballotCodeSeed">Hash from previous ballot or hash from device</param>
/// <param name="nonceSeed">an optional value used to seed the `Nonce` generated for this ballot
/// if this value is not provided, the secret generating mechanism of the OS provides its own</param>
/// <param name="shouldVerifyProofs">specify if the proofs should be verified prior to returning (default True)</param>
/// <returns>A `CiphertextBallot`</returns>
/// </summary>
public static unsafe CompactCiphertextBallot CompactBallot(
PlaintextBallot ballot,
InternalManifest internalManifest,
CiphertextElectionContext context,
ElementModQ ballotCodeSeed,
bool verifyProofs = true)
{
var status = NativeInterface.Encrypt.CompactBallot(
ballot.Handle, internalManifest.Handle, context.Handle,
ballotCodeSeed.Handle, verifyProofs,
out NativeCompactCiphertextBallot ciphertext);
if (status != Status.ELECTIONGUARD_STATUS_SUCCESS)
{
Console.WriteLine($"Encrypt CompactBallot Error Status: {status}");
}
return(new CompactCiphertextBallot(ciphertext));
}
