1 files changed, 0 insertions, 113 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/ntru/NTRUEncryptionKeyPairGenerator.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/ntru/NTRUEncryptionKeyPairGenerator.java
deleted file mode 100644
index bf63c33f0..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/ntru/NTRUEncryptionKeyPairGenerator.java
+++ /dev/null
@@ -1,113 +0,0 @@
-package org.spongycastle.pqc.crypto.ntru;
-
-import org.spongycastle.crypto.AsymmetricCipherKeyPair;
-import org.spongycastle.crypto.AsymmetricCipherKeyPairGenerator;
-import org.spongycastle.crypto.KeyGenerationParameters;
-import org.spongycastle.pqc.math.ntru.polynomial.DenseTernaryPolynomial;
-import org.spongycastle.pqc.math.ntru.polynomial.IntegerPolynomial;
-import org.spongycastle.pqc.math.ntru.polynomial.Polynomial;
-import org.spongycastle.pqc.math.ntru.polynomial.ProductFormPolynomial;
-import org.spongycastle.pqc.math.ntru.util.Util;
-
-/**
- * Generates key pairs.<br/>
- * The parameter p is hardcoded to 3.
- */
-public class NTRUEncryptionKeyPairGenerator
-    implements AsymmetricCipherKeyPairGenerator
-{
-    private NTRUEncryptionKeyGenerationParameters params;
-
-    /**
-     * Constructs a new instance with a set of encryption parameters.
-     *
-     * @param param encryption parameters
-     */
-    public void init(KeyGenerationParameters param)
-    {
-        this.params = (NTRUEncryptionKeyGenerationParameters)param;
-    }
-
-    /**
-     * Generates a new encryption key pair.
-     *
-     * @return a key pair
-     */
-    public AsymmetricCipherKeyPair generateKeyPair()
-    {
-        int N = params.N;
-        int q = params.q;
-        int df = params.df;
-        int df1 = params.df1;
-        int df2 = params.df2;
-        int df3 = params.df3;
-        int dg = params.dg;
-        boolean fastFp = params.fastFp;
-        boolean sparse = params.sparse;
-
-        Polynomial t;
-        IntegerPolynomial fq;
-        IntegerPolynomial fp = null;
-
-        // choose a random f that is invertible mod 3 and q
-        while (true)
-        {
-            IntegerPolynomial f;
-
-            // choose random t, calculate f and fp
-            if (fastFp)
-            {
-                // if fastFp=true, f is always invertible mod 3
-                t = params.polyType == NTRUParameters.TERNARY_POLYNOMIAL_TYPE_SIMPLE ? Util.generateRandomTernary(N, df, df, sparse, params.getRandom()) : ProductFormPolynomial.generateRandom(N, df1, df2, df3, df3, params.getRandom());
-                f = t.toIntegerPolynomial();
-                f.mult(3);
-                f.coeffs[0] += 1;
-            }
-            else
-            {
-                t = params.polyType == NTRUParameters.TERNARY_POLYNOMIAL_TYPE_SIMPLE ? Util.generateRandomTernary(N, df, df - 1, sparse, params.getRandom()) : ProductFormPolynomial.generateRandom(N, df1, df2, df3, df3 - 1, params.getRandom());
-                f = t.toIntegerPolynomial();
-                fp = f.invertF3();
-                if (fp == null)
-                {
-                    continue;
-                }
-            }
-
-            fq = f.invertFq(q);
-            if (fq == null)
-            {
-                continue;
-            }
-            break;
-        }
-
-        // if fastFp=true, fp=1
-        if (fastFp)
-        {
-            fp = new IntegerPolynomial(N);
-            fp.coeffs[0] = 1;
-        }
-
-        // choose a random g that is invertible mod q
-        DenseTernaryPolynomial g;
-        while (true)
-        {
-            g = DenseTernaryPolynomial.generateRandom(N, dg, dg - 1, params.getRandom());
-            if (g.invertFq(q) != null)
-            {
-                break;
-            }
-        }
-
-        IntegerPolynomial h = g.mult(fq, q);
-        h.mult3(q);
-        h.ensurePositive(q);
-        g.clear();
-        fq.clear();
-
-        NTRUEncryptionPrivateKeyParameters priv = new NTRUEncryptionPrivateKeyParameters(h, t, fp, params.getEncryptionParameters());
-        NTRUEncryptionPublicKeyParameters pub = new NTRUEncryptionPublicKeyParameters(h, params.getEncryptionParameters());
-        return new AsymmetricCipherKeyPair(pub, priv);
-    }
-}
-\ No newline at end of file