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path: root/core/src/main/java/org/bouncycastle/pqc/crypto/ntru/NTRUSigningPrivateKeyParameters.java
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Diffstat (limited to 'core/src/main/java/org/bouncycastle/pqc/crypto/ntru/NTRUSigningPrivateKeyParameters.java')
-rw-r--r--core/src/main/java/org/bouncycastle/pqc/crypto/ntru/NTRUSigningPrivateKeyParameters.java385
1 files changed, 0 insertions, 385 deletions
diff --git a/core/src/main/java/org/bouncycastle/pqc/crypto/ntru/NTRUSigningPrivateKeyParameters.java b/core/src/main/java/org/bouncycastle/pqc/crypto/ntru/NTRUSigningPrivateKeyParameters.java
deleted file mode 100644
index 515f3562..00000000
--- a/core/src/main/java/org/bouncycastle/pqc/crypto/ntru/NTRUSigningPrivateKeyParameters.java
+++ /dev/null
@@ -1,385 +0,0 @@
-package org.bouncycastle.pqc.crypto.ntru;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.ArrayList;
-import java.util.List;
-
-import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
-import org.bouncycastle.pqc.math.ntru.polynomial.DenseTernaryPolynomial;
-import org.bouncycastle.pqc.math.ntru.polynomial.IntegerPolynomial;
-import org.bouncycastle.pqc.math.ntru.polynomial.Polynomial;
-import org.bouncycastle.pqc.math.ntru.polynomial.ProductFormPolynomial;
-import org.bouncycastle.pqc.math.ntru.polynomial.SparseTernaryPolynomial;
-
-/**
- * A NtruSign private key comprises one or more {@link NTRUSigningPrivateKeyParameters.Basis} of three polynomials each,
- * except the zeroth basis for which <code>h</code> is undefined.
- */
-public class NTRUSigningPrivateKeyParameters
- extends AsymmetricKeyParameter
-{
- private List<Basis> bases;
- private NTRUSigningPublicKeyParameters publicKey;
-
- /**
- * Constructs a new private key from a byte array
- *
- * @param b an encoded private key
- * @param params the NtruSign parameters to use
- */
- public NTRUSigningPrivateKeyParameters(byte[] b, NTRUSigningKeyGenerationParameters params)
- throws IOException
- {
- this(new ByteArrayInputStream(b), params);
- }
-
- /**
- * Constructs a new private key from an input stream
- *
- * @param is an input stream
- * @param params the NtruSign parameters to use
- */
- public NTRUSigningPrivateKeyParameters(InputStream is, NTRUSigningKeyGenerationParameters params)
- throws IOException
- {
- super(true);
- bases = new ArrayList<Basis>();
- for (int i = 0; i <= params.B; i++)
- // include a public key h[i] in all bases except for the first one
- {
- add(new Basis(is, params, i != 0));
- }
- publicKey = new NTRUSigningPublicKeyParameters(is, params.getSigningParameters());
- }
-
- public NTRUSigningPrivateKeyParameters(List<Basis> bases, NTRUSigningPublicKeyParameters publicKey)
- {
- super(true);
- this.bases = new ArrayList<Basis>(bases);
- this.publicKey = publicKey;
- }
-
- /**
- * Adds a basis to the key.
- *
- * @param b a NtruSign basis
- */
- private void add(Basis b)
- {
- bases.add(b);
- }
-
- /**
- * Returns the <code>i</code>-th basis
- *
- * @param i the index
- * @return the basis at index <code>i</code>
- */
- public Basis getBasis(int i)
- {
- return bases.get(i);
- }
-
- public NTRUSigningPublicKeyParameters getPublicKey()
- {
- return publicKey;
- }
-
- /**
- * Converts the key to a byte array
- *
- * @return the encoded key
- */
- public byte[] getEncoded()
- throws IOException
- {
- ByteArrayOutputStream os = new ByteArrayOutputStream();
- for (int i = 0; i < bases.size(); i++)
- {
- // all bases except for the first one contain a public key
- bases.get(i).encode(os, i != 0);
- }
-
- os.write(publicKey.getEncoded());
-
- return os.toByteArray();
- }
-
- /**
- * Writes the key to an output stream
- *
- * @param os an output stream
- * @throws IOException
- */
- public void writeTo(OutputStream os)
- throws IOException
- {
- os.write(getEncoded());
- }
-
- @Override
- public int hashCode()
- {
- final int prime = 31;
- int result = 1;
- result = prime * result + ((bases == null) ? 0 : bases.hashCode());
- for (Basis basis : bases)
- {
- result += basis.hashCode();
- }
- return result;
- }
-
- @Override
- public boolean equals(Object obj)
- {
- if (this == obj)
- {
- return true;
- }
- if (obj == null)
- {
- return false;
- }
- if (getClass() != obj.getClass())
- {
- return false;
- }
- NTRUSigningPrivateKeyParameters other = (NTRUSigningPrivateKeyParameters)obj;
- if (bases == null)
- {
- if (other.bases != null)
- {
- return false;
- }
- }
- if (bases.size() != other.bases.size())
- {
- return false;
- }
- for (int i = 0; i < bases.size(); i++)
- {
- Basis basis1 = bases.get(i);
- Basis basis2 = other.bases.get(i);
- if (!basis1.f.equals(basis2.f))
- {
- return false;
- }
- if (!basis1.fPrime.equals(basis2.fPrime))
- {
- return false;
- }
- if (i != 0 && !basis1.h.equals(basis2.h)) // don't compare h for the 0th basis
- {
- return false;
- }
- if (!basis1.params.equals(basis2.params))
- {
- return false;
- }
- }
- return true;
- }
-
- /**
- * A NtruSign basis. Contains three polynomials <code>f, f', h</code>.
- */
- public static class Basis
- {
- public Polynomial f;
- public Polynomial fPrime;
- public IntegerPolynomial h;
- NTRUSigningKeyGenerationParameters params;
-
- /**
- * Constructs a new basis from polynomials <code>f, f', h</code>.
- *
- * @param f
- * @param fPrime
- * @param h
- * @param params NtruSign parameters
- */
- protected Basis(Polynomial f, Polynomial fPrime, IntegerPolynomial h, NTRUSigningKeyGenerationParameters params)
- {
- this.f = f;
- this.fPrime = fPrime;
- this.h = h;
- this.params = params;
- }
-
- /**
- * Reads a basis from an input stream and constructs a new basis.
- *
- * @param is an input stream
- * @param params NtruSign parameters
- * @param include_h whether to read the polynomial <code>h</code> (<code>true</code>) or only <code>f</code> and <code>f'</code> (<code>false</code>)
- */
- Basis(InputStream is, NTRUSigningKeyGenerationParameters params, boolean include_h)
- throws IOException
- {
- int N = params.N;
- int q = params.q;
- int d1 = params.d1;
- int d2 = params.d2;
- int d3 = params.d3;
- boolean sparse = params.sparse;
- this.params = params;
-
- if (params.polyType == NTRUParameters.TERNARY_POLYNOMIAL_TYPE_PRODUCT)
- {
- f = ProductFormPolynomial.fromBinary(is, N, d1, d2, d3 + 1, d3);
- }
- else
- {
- IntegerPolynomial fInt = IntegerPolynomial.fromBinary3Tight(is, N);
- f = sparse ? new SparseTernaryPolynomial(fInt) : new DenseTernaryPolynomial(fInt);
- }
-
- if (params.basisType == NTRUSigningKeyGenerationParameters.BASIS_TYPE_STANDARD)
- {
- IntegerPolynomial fPrimeInt = IntegerPolynomial.fromBinary(is, N, q);
- for (int i = 0; i < fPrimeInt.coeffs.length; i++)
- {
- fPrimeInt.coeffs[i] -= q / 2;
- }
- fPrime = fPrimeInt;
- }
- else if (params.polyType == NTRUParameters.TERNARY_POLYNOMIAL_TYPE_PRODUCT)
- {
- fPrime = ProductFormPolynomial.fromBinary(is, N, d1, d2, d3 + 1, d3);
- }
- else
- {
- fPrime = IntegerPolynomial.fromBinary3Tight(is, N);
- }
-
- if (include_h)
- {
- h = IntegerPolynomial.fromBinary(is, N, q);
- }
- }
-
- /**
- * Writes the basis to an output stream
- *
- * @param os an output stream
- * @param include_h whether to write the polynomial <code>h</code> (<code>true</code>) or only <code>f</code> and <code>f'</code> (<code>false</code>)
- * @throws IOException
- */
- void encode(OutputStream os, boolean include_h)
- throws IOException
- {
- int q = params.q;
-
- os.write(getEncoded(f));
- if (params.basisType == NTRUSigningKeyGenerationParameters.BASIS_TYPE_STANDARD)
- {
- IntegerPolynomial fPrimeInt = fPrime.toIntegerPolynomial();
- for (int i = 0; i < fPrimeInt.coeffs.length; i++)
- {
- fPrimeInt.coeffs[i] += q / 2;
- }
- os.write(fPrimeInt.toBinary(q));
- }
- else
- {
- os.write(getEncoded(fPrime));
- }
- if (include_h)
- {
- os.write(h.toBinary(q));
- }
- }
-
- private byte[] getEncoded(Polynomial p)
- {
- if (p instanceof ProductFormPolynomial)
- {
- return ((ProductFormPolynomial)p).toBinary();
- }
- else
- {
- return p.toIntegerPolynomial().toBinary3Tight();
- }
- }
-
- @Override
- public int hashCode()
- {
- final int prime = 31;
- int result = 1;
- result = prime * result + ((f == null) ? 0 : f.hashCode());
- result = prime * result + ((fPrime == null) ? 0 : fPrime.hashCode());
- result = prime * result + ((h == null) ? 0 : h.hashCode());
- result = prime * result + ((params == null) ? 0 : params.hashCode());
- return result;
- }
-
- @Override
- public boolean equals(Object obj)
- {
- if (this == obj)
- {
- return true;
- }
- if (obj == null)
- {
- return false;
- }
- if (!(obj instanceof Basis))
- {
- return false;
- }
- Basis other = (Basis)obj;
- if (f == null)
- {
- if (other.f != null)
- {
- return false;
- }
- }
- else if (!f.equals(other.f))
- {
- return false;
- }
- if (fPrime == null)
- {
- if (other.fPrime != null)
- {
- return false;
- }
- }
- else if (!fPrime.equals(other.fPrime))
- {
- return false;
- }
- if (h == null)
- {
- if (other.h != null)
- {
- return false;
- }
- }
- else if (!h.equals(other.h))
- {
- return false;
- }
- if (params == null)
- {
- if (other.params != null)
- {
- return false;
- }
- }
- else if (!params.equals(other.params))
- {
- return false;
- }
- return true;
- }
- }
-} \ No newline at end of file
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