diff options
Diffstat (limited to 'prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/BCMcEliecePrivateKey.java')
| -rw-r--r-- | prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/BCMcEliecePrivateKey.java | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/BCMcEliecePrivateKey.java b/prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/BCMcEliecePrivateKey.java deleted file mode 100644 index be93b311..00000000 --- a/prov/src/main/java/org/bouncycastle/pqc/jcajce/provider/mceliece/BCMcEliecePrivateKey.java +++ /dev/null @@ -1,334 +0,0 @@ -package org.bouncycastle.pqc.jcajce.provider.mceliece; - -import java.io.IOException; -import java.security.PrivateKey; - -import org.bouncycastle.asn1.ASN1ObjectIdentifier; -import org.bouncycastle.asn1.ASN1Primitive; -import org.bouncycastle.asn1.DERNull; -import org.bouncycastle.asn1.pkcs.PrivateKeyInfo; -import org.bouncycastle.asn1.x509.AlgorithmIdentifier; -import org.bouncycastle.crypto.CipherParameters; -import org.bouncycastle.pqc.asn1.McEliecePrivateKey; -import org.bouncycastle.pqc.crypto.mceliece.McElieceKeyPairGenerator; -import org.bouncycastle.pqc.crypto.mceliece.McElieceParameters; -import org.bouncycastle.pqc.crypto.mceliece.McEliecePrivateKeyParameters; -import org.bouncycastle.pqc.jcajce.spec.McEliecePrivateKeySpec; -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; - -/** - * This class implements a McEliece private key and is usually instantiated by - * the {@link McElieceKeyPairGenerator} or {@link McElieceKeyFactorySpi}. - */ -public class BCMcEliecePrivateKey - implements CipherParameters, PrivateKey -{ - - /** - * - */ - private static final long serialVersionUID = 1L; - - // 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; - - // the matrix S^-1 - private GF2Matrix sInv; - - // the permutation P1 used to generate the systematic check matrix - private Permutation p1; - - // the permutation P2 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; - - private McElieceParameters mcElieceParams; - - - /** - * Constructor (used by the {@link McElieceKeyPairGenerator}). - * - * @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> - */ - public BCMcEliecePrivateKey(String oid, int n, int k, GF2mField field, - PolynomialGF2mSmallM goppaPoly, GF2Matrix sInv, Permutation p1, - Permutation p2, GF2Matrix h, PolynomialGF2mSmallM[] qInv) - { - this.oid = oid; - this.n = n; - this.k = k; - 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 McElieceKeyFactorySpi}). - * - * @param keySpec a {@link McEliecePrivateKeySpec} - */ - public BCMcEliecePrivateKey(McEliecePrivateKeySpec keySpec) - { - this(keySpec.getOIDString(), keySpec.getN(), keySpec.getK(), keySpec.getField(), keySpec - .getGoppaPoly(), keySpec.getSInv(), keySpec.getP1(), keySpec - .getP2(), keySpec.getH(), keySpec.getQInv()); - } - - public BCMcEliecePrivateKey(McEliecePrivateKeyParameters params) - { - this(params.getOIDString(), params.getN(), params.getK(), params.getField(), params.getGoppaPoly(), - params.getSInv(), params.getP1(), params.getP2(), params.getH(), params.getQInv()); - - this.mcElieceParams = params.getParameters(); - } - - - /** - * Return the name of the algorithm. - * - * @return "McEliece" - */ - public String getAlgorithm() - { - return "McEliece"; - } - - /** - * @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 - */ - 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 - */ - 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 - */ - public GF2Matrix getH() - { - return h; - } - - /** - * @return the matrix for computing square roots in <tt>(GF(2^m))^t</tt> - */ - public PolynomialGF2mSmallM[] getQInv() - { - return qInv; - } - - /** - * @return the OID of the algorithm - */ - public String getOIDString() - { - return oid; - } - - /** - * @return a human readable form of the key - */ - public String toString() - { - String result = " length of the code : " + n + "\n"; - result += " dimension of the code : " + k + "\n"; - result += " irreducible Goppa polynomial: " + goppaPoly + "\n"; - result += " (k x k)-matrix S^-1 : " + sInv + "\n"; - result += " permutation P1 : " + p1 + "\n"; - result += " permutation P2 : " + p2; - return result; - } - - /** - * Compare this key with another object. - * - * @param other the other object - * @return the result of the comparison - */ - public boolean equals(Object other) - { - if (!(other instanceof BCMcEliecePrivateKey)) - { - return false; - } - BCMcEliecePrivateKey otherKey = (BCMcEliecePrivateKey)other; - - return (n == otherKey.n) && (k == otherKey.k) - && field.equals(otherKey.field) - && goppaPoly.equals(otherKey.goppaPoly) - && sInv.equals(otherKey.sInv) && p1.equals(otherKey.p1) - && p2.equals(otherKey.p2) && h.equals(otherKey.h); - } - - /** - * @return the hash code of this key - */ - public int hashCode() - { - return k + n + field.hashCode() + goppaPoly.hashCode() - + sInv.hashCode() + p1.hashCode() + p2.hashCode() - + h.hashCode(); - } - - /** - * @return the OID to encode in the SubjectPublicKeyInfo structure - */ - protected ASN1ObjectIdentifier getOID() - { - return new ASN1ObjectIdentifier(McElieceKeyFactorySpi.OID); - } - - /** - * @return the algorithm parameters to encode in the SubjectPublicKeyInfo - * structure - */ - protected ASN1Primitive getAlgParams() - { - return null; // FIXME: needed at all? - } - - /** - * Return the key data to encode in the SubjectPublicKeyInfo structure. - * <p/> - * The ASN.1 definition of the key structure is - * <p/> - * <pre> - * McEliecePrivateKey ::= SEQUENCE { - * n INTEGER -- length of the code - * k INTEGER -- dimension of the code - * fieldPoly OCTET STRING -- field polynomial defining GF(2ˆm) - * goppaPoly OCTET STRING -- irreducible Goppa polynomial - * sInv OCTET STRING -- matrix Sˆ-1 - * p1 OCTET STRING -- permutation P1 - * p2 OCTET STRING -- permutation P2 - * h OCTET STRING -- canonical check matrix - * qInv SEQUENCE OF OCTET STRING -- matrix used to compute square roots - * } - * </pre> - * - * @return the key data to encode in the SubjectPublicKeyInfo structure - */ - public byte[] getEncoded() - { - McEliecePrivateKey privateKey = new McEliecePrivateKey(new ASN1ObjectIdentifier(oid), n, k, field, goppaPoly, sInv, p1, p2, h, qInv); - PrivateKeyInfo pki; - try - { - AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(this.getOID(), DERNull.INSTANCE); - pki = new PrivateKeyInfo(algorithmIdentifier, privateKey); - } - catch (IOException e) - { - e.printStackTrace(); - return null; - } - try - { - byte[] encoded = pki.getEncoded(); - return encoded; - } - catch (IOException e) - { - e.printStackTrace(); - return null; - } - } - - public String getFormat() - { - // TODO Auto-generated method stub - return null; - } - - public McElieceParameters getMcElieceParameters() - { - return mcElieceParams; - } - - -} |