/**
* Generates a new signature key pair. Runs in a single thread.
* @return a key pair
*/
public SignatureKeyPair generateKeyPairSingleThread()
{
SignaturePrivateKey priv = new SignaturePrivateKey(param);
SignaturePublicKey pub = null;
Basis pubBasis = generateBoundedBasis();
pub = new SignaturePublicKey(pubBasis.h, param.q);
pubBasis.h = null; // remove the public polynomial h from the private key
priv.add(pubBasis);
for (int k = param.B; k > 0; k--)
{
Basis basis = generateBoundedBasis();
priv.add(basis);
}
SignatureKeyPair kp = new SignatureKeyPair(priv, pub);
return(kp);
}
/**
* Generates a new signature key pair. Uses up to <code>B+1</code> threads
* if multiple processors are available.
* @return a key pair
*/
public SignatureKeyPair generateKeyPair()
{
int processors = Environment.ProcessorCount;
SignaturePrivateKey priv = new SignaturePrivateKey(param);
int B = param.B;
//if (processors == 1)
// generate all B+1 bases in the current thread
for (int k = B; k >= 0; k--)
{
priv.add(generateBoundedBasis());
}
/*else {
* List<Future<Basis>> bases = new ArrayList<Future<Basis>>();
*
* // start up to processors-1 new threads and generate B bases
* int numThreads = Math.min(B, processors-1);
* if (numThreads > 0) {
* ExecutorService executor = Executors.newFixedThreadPool(numThreads);
* for (int k=B-1; k>=0; k--)
* bases.add(executor.submit(new BasisGenerationTask()));
* executor.shutdown();
* }
*
* // generate the remaining basis in the current thread
* Basis basis0 = generateBoundedBasis();
*
* // build the private key
* for (Future<Basis> basis: bases)
* try {
* priv.add(basis.get());
* } catch (Exception e) {
* throw new NtruException(e);
* }
* priv.add(basis0);
* }*/
int q = param.q;
SignaturePublicKey pub = new SignaturePublicKey(priv.getBasis(0).h, q);
priv.getBasis(0).h = null; // remove the public polynomial h from the private key
SignatureKeyPair kp = new SignatureKeyPair(priv, pub);
return(kp);
}
/**
* Generates a new signature key pair. Uses up to <code>B+1</code> threads
* if multiple processors are available.
* @return a key pair
*/
public SignatureKeyPair generateKeyPair()
{
int processors = Environment.ProcessorCount;
SignaturePrivateKey priv = new SignaturePrivateKey(param);
int B = param.B;
//if (processors == 1)
// generate all B+1 bases in the current thread
for (int k = B; k >= 0; k--)
priv.add(generateBoundedBasis());
/*else {
List<Future<Basis>> bases = new ArrayList<Future<Basis>>();
// start up to processors-1 new threads and generate B bases
int numThreads = Math.min(B, processors-1);
if (numThreads > 0) {
ExecutorService executor = Executors.newFixedThreadPool(numThreads);
for (int k=B-1; k>=0; k--)
bases.add(executor.submit(new BasisGenerationTask()));
executor.shutdown();
}
// generate the remaining basis in the current thread
Basis basis0 = generateBoundedBasis();
// build the private key
for (Future<Basis> basis: bases)
try {
priv.add(basis.get());
} catch (Exception e) {
throw new NtruException(e);
}
priv.add(basis0);
}*/
int q = param.q;
SignaturePublicKey pub = new SignaturePublicKey(priv.getBasis(0).h, q);
priv.getBasis(0).h = null; // remove the public polynomial h from the private key
SignatureKeyPair kp = new SignatureKeyPair(priv, pub);
return kp;
}
/**
* Generates a new signature key pair. Runs in a single thread.
* @return a key pair
*/
public SignatureKeyPair generateKeyPairSingleThread()
{
SignaturePrivateKey priv = new SignaturePrivateKey(param);
SignaturePublicKey pub = null;
Basis pubBasis = generateBoundedBasis();
pub = new SignaturePublicKey(pubBasis.h, param.q);
pubBasis.h = null; // remove the public polynomial h from the private key
priv.add(pubBasis);
for (int k = param.B; k > 0; k--)
{
Basis basis = generateBoundedBasis();
priv.add(basis);
}
SignatureKeyPair kp = new SignatureKeyPair(priv, pub);
return kp;
}