diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
---|---|---|
committer | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
commit | 2b976f5364cfdbc37d3086019d93483c983eb80b (patch) | |
tree | cb846af3fd1d43f9c2562a1fb2d06b997ad8f229 /core/src/main/java/org/bouncycastle/pqc/crypto/mceliece/McEliecePrivateKeyParameters.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/pqc/crypto/mceliece/McEliecePrivateKeyParameters.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/pqc/crypto/mceliece/McEliecePrivateKeyParameters.java | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/pqc/crypto/mceliece/McEliecePrivateKeyParameters.java b/core/src/main/java/org/bouncycastle/pqc/crypto/mceliece/McEliecePrivateKeyParameters.java new file mode 100644 index 00000000..762c2a25 --- /dev/null +++ b/core/src/main/java/org/bouncycastle/pqc/crypto/mceliece/McEliecePrivateKeyParameters.java @@ -0,0 +1,197 @@ +package org.bouncycastle.pqc.crypto.mceliece; + +import org.bouncycastle.pqc.math.linearalgebra.GF2Matrix; +import org.bouncycastle.pqc.math.linearalgebra.GF2mField; +import org.bouncycastle.pqc.math.linearalgebra.Permutation; +import org.bouncycastle.pqc.math.linearalgebra.PolynomialGF2mSmallM; + + +public class McEliecePrivateKeyParameters + extends McElieceKeyParameters +{ + + // the OID of the algorithm + private String oid; + + // the length of the code + private int n; + + // the dimension of the code, where <tt>k >= n - mt</tt> + private int k; + + // the underlying finite field + private GF2mField field; + + // the irreducible Goppa polynomial + private PolynomialGF2mSmallM goppaPoly; + + // a k x k random binary non-singular matrix + private GF2Matrix sInv; + + // the permutation used to generate the systematic check matrix + private Permutation p1; + + // the permutation used to compute the public generator matrix + private Permutation p2; + + // the canonical check matrix of the code + private GF2Matrix h; + + // the matrix used to compute square roots in <tt>(GF(2^m))^t</tt> + private PolynomialGF2mSmallM[] qInv; + + /** + * Constructor. + * + * @param oid + * @param n the length of the code + * @param k the dimension of the code + * @param field the field polynomial defining the finite field + * <tt>GF(2<sup>m</sup>)</tt> + * @param goppaPoly the irreducible Goppa polynomial + * @param sInv the matrix <tt>S<sup>-1</sup></tt> + * @param p1 the permutation used to generate the systematic check + * matrix + * @param p2 the permutation used to compute the public generator + * matrix + * @param h the canonical check matrix + * @param qInv the matrix used to compute square roots in + * <tt>(GF(2<sup>m</sup>))<sup>t</sup></tt> + * @param params McElieceParameters + */ + public McEliecePrivateKeyParameters(String oid, int n, int k, GF2mField field, + PolynomialGF2mSmallM goppaPoly, GF2Matrix sInv, Permutation p1, + Permutation p2, GF2Matrix h, PolynomialGF2mSmallM[] qInv, McElieceParameters params) + { + super(true, params); + this.oid = oid; + this.k = k; + this.n = n; + this.field = field; + this.goppaPoly = goppaPoly; + this.sInv = sInv; + this.p1 = p1; + this.p2 = p2; + this.h = h; + this.qInv = qInv; + } + + /** + * Constructor (used by the {@link McElieceKeyFactory}). + * + * @param oid + * @param n the length of the code + * @param k the dimension of the code + * @param encField the encoded field polynomial defining the finite field + * <tt>GF(2<sup>m</sup>)</tt> + * @param encGoppaPoly the encoded irreducible Goppa polynomial + * @param encSInv the encoded matrix <tt>S<sup>-1</sup></tt> + * @param encP1 the encoded permutation used to generate the systematic + * check matrix + * @param encP2 the encoded permutation used to compute the public + * generator matrix + * @param encH the encoded canonical check matrix + * @param encQInv the encoded matrix used to compute square roots in + * <tt>(GF(2<sup>m</sup>))<sup>t</sup></tt> + * @param params McElieceParameters + */ + public McEliecePrivateKeyParameters(String oid, int n, int k, byte[] encField, + byte[] encGoppaPoly, byte[] encSInv, byte[] encP1, byte[] encP2, + byte[] encH, byte[][] encQInv, McElieceParameters params) + { + super(true, params); + this.oid = oid; + this.n = n; + this.k = k; + field = new GF2mField(encField); + goppaPoly = new PolynomialGF2mSmallM(field, encGoppaPoly); + sInv = new GF2Matrix(encSInv); + p1 = new Permutation(encP1); + p2 = new Permutation(encP2); + h = new GF2Matrix(encH); + qInv = new PolynomialGF2mSmallM[encQInv.length]; + for (int i = 0; i < encQInv.length; i++) + { + qInv[i] = new PolynomialGF2mSmallM(field, encQInv[i]); + } + } + + /** + * @return the length of the code + */ + public int getN() + { + return n; + } + + /** + * @return the dimension of the code + */ + public int getK() + { + return k; + } + + /** + * @return the finite field <tt>GF(2<sup>m</sup>)</tt> + */ + public GF2mField getField() + { + return field; + } + + /** + * @return the irreducible Goppa polynomial + */ + public PolynomialGF2mSmallM getGoppaPoly() + { + return goppaPoly; + } + + /** + * @return the k x k random binary non-singular matrix S^-1 + */ + public GF2Matrix getSInv() + { + return sInv; + } + + /** + * @return the permutation used to generate the systematic check matrix + */ + public Permutation getP1() + { + return p1; + } + + /** + * @return the permutation used to compute the public generator matrix + */ + public Permutation getP2() + { + return p2; + } + + /** + * @return the canonical check matrix H + */ + public GF2Matrix getH() + { + return h; + } + + /** + * @return the matrix used to compute square roots in + * <tt>(GF(2<sup>m</sup>))<sup>t</sup></tt> + */ + public PolynomialGF2mSmallM[] getQInv() + { + return qInv; + } + + public String getOIDString() + { + return oid; + } + +} |