Java GMSSRandom类代码示例

import org.bouncycastle.pqc.crypto.gmss.util.GMSSRandom; //导入依赖的package包/类
/**
 * The standard constructor tries to generate the MerkleTree Algorithm
 * identifier with the corresponding OID.
 *
 * @param digest     the digest to use
 */
// TODO
public GMSSSigner(GMSSDigestProvider digest)
{
    digestProvider = digest;
    messDigestTrees = digest.get();
    messDigestOTS = messDigestTrees;
    mdLength = messDigestTrees.getDigestSize();
    gmssRandom = new GMSSRandom(messDigestTrees);
}
 

import org.bouncycastle.pqc.crypto.gmss.util.GMSSRandom; //导入依赖的package包/类
/**
 * The constructor generates the PRNG and initializes some variables
 *
 * @param digest   an array of strings, containing the digest of the used hash
 *               function, the digest of the PRGN and the names of the
 *               corresponding providers
 * @param w      the winternitz parameter
 * @param height the heigth of the tree
 */
public GMSSRootSig(Digest digest, int w, int height)
{
    messDigestOTS = digest;
    gmssRandom = new GMSSRandom(messDigestOTS);

    this.mdsize = messDigestOTS.getDigestSize();
    this.w = w;
    this.height = height;

    this.k = (1 << w) - 1;

    int mdsizeBit = mdsize << 3;
    this.messagesize = (int)Math.ceil((double)(mdsizeBit) / (double)w);
}
 

import org.bouncycastle.pqc.crypto.gmss.util.GMSSRandom; //导入依赖的package包/类
/**
 * This constructor regenerates a prior GMSSLeaf object
 *
 * @param digest   an array of strings, containing the name of the used hash
 *                 function and PRNG and the name of the corresponding
 *                 provider
 * @param otsIndex status bytes
 * @param numLeafs status ints
 */
public GMSSLeaf(Digest digest, byte[][] otsIndex, int[] numLeafs)
{
    this.i = numLeafs[0];
    this.j = numLeafs[1];
    this.steps = numLeafs[2];
    this.w = numLeafs[3];

    messDigestOTS = digest;

    gmssRandom = new GMSSRandom(messDigestOTS);

    // calulate keysize for private key and the help array
    mdsize = messDigestOTS.getDigestSize();
    int mdsizeBit = mdsize << 3;
    int messagesize = (int)Math.ceil((double)(mdsizeBit) / (double)w);
    int checksumsize = getLog((messagesize << w) + 1);
    this.keysize = messagesize
        + (int)Math.ceil((double)checksumsize / (double)w);
    this.two_power_w = 1 << w;

    // calculate steps
    // ((2^w)-1)*keysize + keysize + 1 / (2^h -1)

    // initialize arrays
    this.privateKeyOTS = otsIndex[0];
    this.seed = otsIndex[1];
    this.concHashs = otsIndex[2];
    this.leaf = otsIndex[3];
}
 

import org.bouncycastle.pqc.crypto.gmss.util.GMSSRandom; //导入依赖的package包/类
/**
 * The standard constructor tries to generate the GMSS algorithm identifier
 * with the corresponding OID.
 * <p/>
 *
 * @param digestProvider     provider for digest implementations.
 */
public GMSSKeyPairGenerator(GMSSDigestProvider digestProvider)
{
    this.digestProvider = digestProvider;
    messDigestTree = digestProvider.get();

    // set mdLength
    this.mdLength = messDigestTree.getDigestSize();
    // construct randomizer
    this.gmssRandom = new GMSSRandom(messDigestTree);

}
 

import org.bouncycastle.pqc.crypto.gmss.util.GMSSRandom; //导入依赖的package包/类
/**
 * The standard constructor tries to generate the GMSS algorithm identifier
 * with the corresponding OID.
 *
 * @param digestProvider     provider for digest implementations.
 */
public GMSSKeyPairGenerator(GMSSDigestProvider digestProvider)
{
    this.digestProvider = digestProvider;
    messDigestTree = digestProvider.get();

    // set mdLength
    this.mdLength = messDigestTree.getDigestSize();
    // construct randomizer
    this.gmssRandom = new GMSSRandom(messDigestTree);

}