/// <summary>
/// Get the issuance state after the second message generation.
/// </summary>
/// <returns>The issuance state after the second message generation.</returns>
public PostSecondMessageState ExportPostSecondMessageState()
{
if (state != State.Second)
{
throw new InvalidOperationException("GenerateSeondMessage must be called first");
}
PostSecondMessageState psms = new PostSecondMessageState();
psms.TI = TI;
psms.PI = PI;
FieldZqElement[] alphaInverse = new FieldZqElement[numberOfTokens];
for (int i = 0; i < numberOfTokens; i++)
{
alphaInverse[i] = ukat[i].PrivateKey;
}
psms.AlphaInverse = alphaInverse;
psms.Beta2 = beta2;
psms.H = h;
psms.SigmaZPrime = sigmaZPrime;
psms.SigmaAPrime = sigmaAPrime;
psms.SigmaBPrime = sigmaBPrime;
psms.SigmaCPrime = sigmaCPrime;
psms.IsDeviceProtected = isDeviceProtected;
// we update the state so this object cannot be used by mistake to complete the issuance
// (we don't want the same randomizers to be used twice on two issuer-provided messages)
state = State.Tokens;
return(psms);
}
/// <summary>
/// Constructs a new <code>Prover</code> instance.
/// </summary>
/// <param name="ip">The Issuer parameters.</param>
/// <param name="psms">The post second message state.</param>
public Prover(IssuerParameters ip, PostSecondMessageState psms)
{
psms.Validate();
this.ip = ip;
this.numberOfTokens = psms.AlphaInverse.Length;
this.TI = psms.TI;
this.PI = psms.PI;
this.isDeviceProtected = psms.IsDeviceProtected;
this.beta2 = psms.Beta2;
this.h = psms.H;
this.sigmaZPrime = psms.SigmaZPrime;
this.sigmaAPrime = psms.SigmaAPrime;
this.sigmaBPrime = psms.SigmaBPrime;
this.sigmaCPrime = psms.SigmaCPrime;
ukat = new UProveKeyAndToken[numberOfTokens];
for (int i = 0; i < numberOfTokens; i++)
{
ukat[i] = new UProveKeyAndToken();
ukat[i].PrivateKey = psms.AlphaInverse[i];
}
state = State.Second;
}
/// <summary>
/// Get the issuance state after the second message generation.
/// </summary>
/// <returns>The issuance state after the second message generation.</returns>
public PostSecondMessageState ExportPostSecondMessageState()
{
if (state != State.Second)
{
throw new InvalidOperationException("GenerateSeondMessage must be called first");
}
PostSecondMessageState psms = new PostSecondMessageState();
psms.TI = TI;
psms.PI = PI;
FieldZqElement[] alphaInverse = new FieldZqElement[numberOfTokens];
for (int i = 0; i < numberOfTokens; i++)
{
alphaInverse[i] = ukat[i].PrivateKey;
}
psms.AlphaInverse = alphaInverse;
psms.Beta2 = beta2;
psms.H = h;
psms.SigmaZPrime = sigmaZPrime;
psms.SigmaAPrime = sigmaAPrime;
psms.SigmaBPrime = sigmaBPrime;
psms.SigmaCPrime = sigmaCPrime;
psms.IsDeviceProtected = isDeviceProtected;
// we update the state so this object cannot be used by mistake to complete the issuance
// (we don't want the same randomizers to be used twice on two issuer-provided messages)
state = State.Tokens;
return psms;
}
/// <summary>
/// Constructs a new <code>Prover</code> instance.
/// </summary>
/// <param name="ip">The Issuer parameters.</param>
/// <param name="psms">The post second message state.</param>
public Prover(IssuerParameters ip, PostSecondMessageState psms)
{
psms.Validate();
this.ip = ip;
this.numberOfTokens = psms.AlphaInverse.Length;
this.TI = psms.TI;
this.PI = psms.PI;
this.isDeviceProtected = psms.IsDeviceProtected;
this.beta2 = psms.Beta2;
this.h = psms.H;
this.sigmaZPrime = psms.SigmaZPrime;
this.sigmaAPrime = psms.SigmaAPrime;
this.sigmaBPrime = psms.SigmaBPrime;
this.sigmaCPrime = psms.SigmaCPrime;
ukat = new UProveKeyAndToken[numberOfTokens];
for (int i = 0; i < numberOfTokens; i++)
{
ukat[i] = new UProveKeyAndToken();
ukat[i].PrivateKey = psms.AlphaInverse[i];
}
state = State.Second;
}
