Package org.bouncycastle.pqc.jcajce.provider.mceliece

Class BCMcElieceCCA2PrivateKey

java.lang.Object
org.bouncycastle.pqc.jcajce.provider.mceliece.BCMcElieceCCA2PrivateKey
All Implemented Interfaces:
Serializable, Key, PrivateKey, Destroyable
public class BCMcElieceCCA2PrivateKey extends Object implements PrivateKey
This class implements a McEliece CCA2 private key and is usually instantiated by the McElieceCCA2KeyPairGenerator or McElieceCCA2KeyFactorySpi.
See Also:

  • Constructor Details

  • Method Details

    • getAlgorithm

      public String getAlgorithm()
      Return the name of the algorithm.
      Specified by:
      getAlgorithm in interface Key
      Returns:
      "McEliece-CCA2"

    • getN

      public int getN()
      Returns:
      the length of the code

    • getK

      public int getK()
      Returns:
      the dimension of the code

    • getT

      public int getT()
      Returns:
      the degree of the Goppa polynomial (error correcting capability)

    • getField

      public GF2mField getField()
      Returns:
      the finite field

    • getGoppaPoly

      public PolynomialGF2mSmallM getGoppaPoly()
      Returns:
      the irreducible Goppa polynomial

    • getP

      public Permutation getP()
      Returns:
      the permutation vector

    • getH

      public GF2Matrix getH()
      Returns:
      the canonical check matrix

    • getQInv

      public PolynomialGF2mSmallM[] getQInv()
      Returns:
      the matrix used to compute square roots in (GF(2^m))^t

    • equals

      public boolean equals(Object other)
      Compare this key with another object.
      Overrides:
      equals in class Object
      Parameters:
      other - the other object
      Returns:
      the result of the comparison

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object
      Returns:
      the hash code of this key

    • getEncoded

      public byte[] getEncoded()
      Return the keyData to encode in the SubjectPublicKeyInfo structure.

      The ASN.1 definition of the key structure is 

         McEliecePrivateKey ::= SEQUENCE {
     m             INTEGER                  -- extension degree of the field
     k             INTEGER                  -- dimension of the code
     field         OCTET STRING             -- field polynomial
     goppaPoly     OCTET STRING             -- irreducible Goppa polynomial
     p             OCTET STRING             -- permutation vector
     matrixH       OCTET STRING             -- canonical check matrix
     sqRootMatrix  SEQUENCE OF OCTET STRING -- square root matrix
   }
      Specified by:
      getEncoded in interface Key
      Returns:
      the keyData to encode in the SubjectPublicKeyInfo structure

    • getFormat

      public String getFormat()
      Specified by:
      getFormat in interface Key