1 files changed, 0 insertions, 131 deletions
diff --git a/prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/McElieceCCA2Primitives.java b/prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/McElieceCCA2Primitives.java
deleted file mode 100644
index 2650fffe..00000000
--- a/prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/McElieceCCA2Primitives.java
+++ /dev/null
@@ -1,131 +0,0 @@
-package org.bouncycastle.pqc.jcajce.provider.mceliece;
-
-import org.bouncycastle.pqc.crypto.mceliece.McElieceCCA2PrivateKeyParameters;
-import org.bouncycastle.pqc.crypto.mceliece.McElieceCCA2PublicKeyParameters;
-import org.bouncycastle.pqc.math.linearalgebra.GF2Matrix;
-import org.bouncycastle.pqc.math.linearalgebra.GF2Vector;
-import org.bouncycastle.pqc.math.linearalgebra.GF2mField;
-import org.bouncycastle.pqc.math.linearalgebra.GoppaCode;
-import org.bouncycastle.pqc.math.linearalgebra.Permutation;
-import org.bouncycastle.pqc.math.linearalgebra.PolynomialGF2mSmallM;
-import org.bouncycastle.pqc.math.linearalgebra.Vector;
-
-/**
- * Core operations for the CCA-secure variants of McEliece.
- */
-public final class McElieceCCA2Primitives
-{
-
-    /**
-     * Default constructor (private).
-     */
-    private McElieceCCA2Primitives()
-    {
-    }
-
-    /**
-     * The McEliece encryption primitive.
-     *
-     * @param pubKey the public key
-     * @param m      the message vector
-     * @param z      the error vector
-     * @return <tt>m*G + z</tt>
-     */
-    public static GF2Vector encryptionPrimitive(BCMcElieceCCA2PublicKey pubKey,
-                                                GF2Vector m, GF2Vector z)
-    {
-
-        GF2Matrix matrixG = pubKey.getG();
-        Vector mG = matrixG.leftMultiplyLeftCompactForm(m);
-        return (GF2Vector)mG.add(z);
-    }
-
-    public static GF2Vector encryptionPrimitive(McElieceCCA2PublicKeyParameters pubKey,
-                                                GF2Vector m, GF2Vector z)
-    {
-
-        GF2Matrix matrixG = pubKey.getMatrixG();
-        Vector mG = matrixG.leftMultiplyLeftCompactForm(m);
-        return (GF2Vector)mG.add(z);
-    }
-
-    /**
-     * The McEliece decryption primitive.
-     *
-     * @param privKey the private key
-     * @param c       the ciphertext vector <tt>c = m*G + z</tt>
-     * @return the message vector <tt>m</tt> and the error vector <tt>z</tt>
-     */
-    public static GF2Vector[] decryptionPrimitive(
-        BCMcElieceCCA2PrivateKey privKey, GF2Vector c)
-    {
-
-        // obtain values from private key
-        int k = privKey.getK();
-        Permutation p = privKey.getP();
-        GF2mField field = privKey.getField();
-        PolynomialGF2mSmallM gp = privKey.getGoppaPoly();
-        GF2Matrix h = privKey.getH();
-        PolynomialGF2mSmallM[] q = privKey.getQInv();
-
-        // compute inverse permutation P^-1
-        Permutation pInv = p.computeInverse();
-
-        // multiply c with permutation P^-1
-        GF2Vector cPInv = (GF2Vector)c.multiply(pInv);
-
-        // compute syndrome of cP^-1
-        GF2Vector syndVec = (GF2Vector)h.rightMultiply(cPInv);
-
-        // decode syndrome
-        GF2Vector errors = GoppaCode.syndromeDecode(syndVec, field, gp, q);
-        GF2Vector mG = (GF2Vector)cPInv.add(errors);
-
-        // multiply codeword and error vector with P
-        mG = (GF2Vector)mG.multiply(p);
-        errors = (GF2Vector)errors.multiply(p);
-
-        // extract plaintext vector (last k columns of mG)
-        GF2Vector m = mG.extractRightVector(k);
-
-        // return vectors
-        return new GF2Vector[]{m, errors};
-    }
-
-    public static GF2Vector[] decryptionPrimitive(
-        McElieceCCA2PrivateKeyParameters privKey, GF2Vector c)
-    {
-
-        // obtain values from private key
-        int k = privKey.getK();
-        Permutation p = privKey.getP();
-        GF2mField field = privKey.getField();
-        PolynomialGF2mSmallM gp = privKey.getGoppaPoly();
-        GF2Matrix h = privKey.getH();
-        PolynomialGF2mSmallM[] q = privKey.getQInv();
-
-        // compute inverse permutation P^-1
-        Permutation pInv = p.computeInverse();
-
-        // multiply c with permutation P^-1
-        GF2Vector cPInv = (GF2Vector)c.multiply(pInv);
-
-        // compute syndrome of cP^-1
-        GF2Vector syndVec = (GF2Vector)h.rightMultiply(cPInv);
-
-        // decode syndrome
-        GF2Vector errors = GoppaCode.syndromeDecode(syndVec, field, gp, q);
-        GF2Vector mG = (GF2Vector)cPInv.add(errors);
-
-        // multiply codeword and error vector with P
-        mG = (GF2Vector)mG.multiply(p);
-        errors = (GF2Vector)errors.multiply(p);
-
-        // extract plaintext vector (last k columns of mG)
-        GF2Vector m = mG.extractRightVector(k);
-
-        // return vectors
-        return new GF2Vector[]{m, errors};
-    }
-
-}