NtruParameterSet
Abstract class for all NTRU parameter sets.
using Org.BouncyCastle.Pqc.Crypto.Ntru.Polynomials;
namespace Org.BouncyCastle.Pqc.Crypto.Ntru.ParameterSets
{
internal abstract class NtruParameterSet
{
internal int N { get; }
internal int LogQ { get; }
internal int SeedBytes { get; }
internal int PrfKeyBytes { get; }
internal int { get; }
internal NtruParameterSet(int n, int logQ, int seedBytes, int prfKeyBytes, int sharedKeyBytes)
{
N = n;
LogQ = logQ;
SeedBytes = seedBytes;
PrfKeyBytes = prfKeyBytes;
SharedKeyBytes = sharedKeyBytes;
}
internal abstract Polynomial CreatePolynomial();
internal int Q()
{
return 1 << LogQ;
}
internal int SampleIidBytes()
{
return N - 1;
}
internal int SampleFixedTypeBytes()
{
return (30 * (N - 1) + 7) / 8;
}
internal abstract int SampleFgBytes();
internal abstract int SampleRmBytes();
internal int PackDegree()
{
return N - 1;
}
internal int PackTrinaryBytes()
{
return (PackDegree() + 4) / 5;
}
internal int OwcpaMsgBytes()
{
return 2 * PackTrinaryBytes();
}
internal int OwcpaPublicKeyBytes()
{
return (LogQ * PackDegree() + 7) / 8;
}
internal int OwcpaSecretKeyBytes()
{
return 2 * PackTrinaryBytes() + OwcpaPublicKeyBytes();
}
internal int OwcpaBytes()
{
return (LogQ * PackDegree() + 7) / 8;
}
internal int NtruPublicKeyBytes()
{
return OwcpaPublicKeyBytes();
}
internal int NtruSecretKeyBytes()
{
return OwcpaSecretKeyBytes() + PrfKeyBytes;
}
internal int NtruCiphertextBytes()
{
return OwcpaBytes();
}
}
}