Examples with SPHINCSPublicKeyParameters com.github.zhenwei.core.pqc.crypto.sphincs.SPHINCSPublicKeyParameters used on opensource projects

Example 1 with SPHINCSPublicKeyParameters

use of com.github.zhenwei.core.pqc.crypto.sphincs.SPHINCSPublicKeyParameters in project LinLong-Java by zhenwei1108.

the class SubjectPublicKeyInfoFactory method createSubjectPublicKeyInfo.

/**
 * Create a SubjectPublicKeyInfo public key.
 *
 * @param publicKey the key to be encoded into the info object.
 * @return a SubjectPublicKeyInfo representing the key.
 * @throws IOException on an error encoding the key
 */
public static SubjectPublicKeyInfo createSubjectPublicKeyInfo(AsymmetricKeyParameter publicKey) throws IOException {
    if (publicKey instanceof QTESLAPublicKeyParameters) {
        QTESLAPublicKeyParameters keyParams = (QTESLAPublicKeyParameters) publicKey;
        AlgorithmIdentifier algorithmIdentifier = Utils.qTeslaLookupAlgID(keyParams.getSecurityCategory());
        return new SubjectPublicKeyInfo(algorithmIdentifier, keyParams.getPublicData());
    } else if (publicKey instanceof SPHINCSPublicKeyParameters) {
        SPHINCSPublicKeyParameters params = (SPHINCSPublicKeyParameters) publicKey;
        AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PQCObjectIdentifiers.sphincs256, new SPHINCS256KeyParams(Utils.sphincs256LookupTreeAlgID(params.getTreeDigest())));
        return new SubjectPublicKeyInfo(algorithmIdentifier, params.getKeyData());
    } else if (publicKey instanceof NHPublicKeyParameters) {
        NHPublicKeyParameters params = (NHPublicKeyParameters) publicKey;
        AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PQCObjectIdentifiers.newHope);
        return new SubjectPublicKeyInfo(algorithmIdentifier, params.getPubData());
    } else if (publicKey instanceof LMSPublicKeyParameters) {
        LMSPublicKeyParameters params = (LMSPublicKeyParameters) publicKey;
        byte[] encoding = Composer.compose().u32str(1).bytes(params).build();
        AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PKCSObjectIdentifiers.id_alg_hss_lms_hashsig);
        return new SubjectPublicKeyInfo(algorithmIdentifier, new DEROctetString(encoding));
    } else if (publicKey instanceof HSSPublicKeyParameters) {
        HSSPublicKeyParameters params = (HSSPublicKeyParameters) publicKey;
        byte[] encoding = Composer.compose().u32str(params.getL()).bytes(params.getLMSPublicKey()).build();
        AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PKCSObjectIdentifiers.id_alg_hss_lms_hashsig);
        return new SubjectPublicKeyInfo(algorithmIdentifier, new DEROctetString(encoding));
    } else if (publicKey instanceof XMSSPublicKeyParameters) {
        XMSSPublicKeyParameters keyParams = (XMSSPublicKeyParameters) publicKey;
        byte[] publicSeed = keyParams.getPublicSeed();
        byte[] root = keyParams.getRoot();
        byte[] keyEnc = keyParams.getEncoded();
        if (keyEnc.length > publicSeed.length + root.length) {
            AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(IsaraObjectIdentifiers.id_alg_xmss);
            return new SubjectPublicKeyInfo(algorithmIdentifier, new DEROctetString(keyEnc));
        } else {
            AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PQCObjectIdentifiers.xmss, new XMSSKeyParams(keyParams.getParameters().getHeight(), Utils.xmssLookupTreeAlgID(keyParams.getTreeDigest())));
            return new SubjectPublicKeyInfo(algorithmIdentifier, new XMSSPublicKey(publicSeed, root));
        }
    } else if (publicKey instanceof XMSSMTPublicKeyParameters) {
        XMSSMTPublicKeyParameters keyParams = (XMSSMTPublicKeyParameters) publicKey;
        byte[] publicSeed = keyParams.getPublicSeed();
        byte[] root = keyParams.getRoot();
        byte[] keyEnc = keyParams.getEncoded();
        if (keyEnc.length > publicSeed.length + root.length) {
            AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(IsaraObjectIdentifiers.id_alg_xmssmt);
            return new SubjectPublicKeyInfo(algorithmIdentifier, new DEROctetString(keyEnc));
        } else {
            AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PQCObjectIdentifiers.xmss_mt, new XMSSMTKeyParams(keyParams.getParameters().getHeight(), keyParams.getParameters().getLayers(), Utils.xmssLookupTreeAlgID(keyParams.getTreeDigest())));
            return new SubjectPublicKeyInfo(algorithmIdentifier, new XMSSMTPublicKey(keyParams.getPublicSeed(), keyParams.getRoot()));
        }
    } else if (publicKey instanceof McElieceCCA2PublicKeyParameters) {
        McElieceCCA2PublicKeyParameters pub = (McElieceCCA2PublicKeyParameters) publicKey;
        McElieceCCA2PublicKey mcEliecePub = new McElieceCCA2PublicKey(pub.getN(), pub.getT(), pub.getG(), Utils.getAlgorithmIdentifier(pub.getDigest()));
        AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PQCObjectIdentifiers.mcElieceCca2);
        return new SubjectPublicKeyInfo(algorithmIdentifier, mcEliecePub);
    } else {
        throw new IOException("key parameters not recognized");
    }
}

Example 2 with SPHINCSPublicKeyParameters

use of com.github.zhenwei.core.pqc.crypto.sphincs.SPHINCSPublicKeyParameters in project LinLong-Java by zhenwei1108.

the class Sphincs256KeyPairGeneratorSpi method generateKeyPair.

public KeyPair generateKeyPair() {
    if (!initialised) {
        param = new SPHINCS256KeyGenerationParameters(random, new SHA512tDigest(256));
        engine.init(param);
        initialised = true;
    }
    AsymmetricCipherKeyPair pair = engine.generateKeyPair();
    SPHINCSPublicKeyParameters pub = (SPHINCSPublicKeyParameters) pair.getPublic();
    SPHINCSPrivateKeyParameters priv = (SPHINCSPrivateKeyParameters) pair.getPrivate();
    return new KeyPair(new BCSphincs256PublicKey(treeDigest, pub), new BCSphincs256PrivateKey(treeDigest, priv));
}