Examples with McEliecePrivateKeyParameters com.github.zhenwei.core.pqc.crypto.mceliece.McEliecePrivateKeyParameters used on opensource projects

Example 1 with McEliecePrivateKeyParameters

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

the class McElieceKeyFactorySpi method engineGeneratePrivate.

/**
 * Converts, if possible, a key specification into a {@link BCMcEliecePrivateKey}.
 *
 * @param keySpec the key specification
 * @return the McEliece private key
 * @throws InvalidKeySpecException if the KeySpec is not supported.
 */
protected PrivateKey engineGeneratePrivate(KeySpec keySpec) throws InvalidKeySpecException {
    if (keySpec instanceof PKCS8EncodedKeySpec) {
        // get the DER-encoded Key according to PKCS#8 from the spec
        byte[] encKey = ((PKCS8EncodedKeySpec) keySpec).getEncoded();
        // decode the PKCS#8 data structure to the pki object
        PrivateKeyInfo pki;
        try {
            pki = PrivateKeyInfo.getInstance(ASN1Primitive.fromByteArray(encKey));
        } catch (IOException e) {
            throw new InvalidKeySpecException("Unable to decode PKCS8EncodedKeySpec: " + e);
        }
        try {
            if (PQCObjectIdentifiers.mcEliece.equals(pki.getPrivateKeyAlgorithm().getAlgorithm())) {
                McEliecePrivateKey key = McEliecePrivateKey.getInstance(pki.parsePrivateKey());
                return new BCMcEliecePrivateKey(new McEliecePrivateKeyParameters(key.getN(), key.getK(), key.getField(), key.getGoppaPoly(), key.getP1(), key.getP2(), key.getSInv()));
            } else {
                throw new InvalidKeySpecException("Unable to recognise OID in McEliece private key");
            }
        } catch (IOException cce) {
            throw new InvalidKeySpecException("Unable to decode PKCS8EncodedKeySpec.");
        }
    }
    throw new InvalidKeySpecException("Unsupported key specification: " + keySpec.getClass() + ".");
}

Example 2 with McEliecePrivateKeyParameters

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

the class McElieceKeyFactorySpi method generatePrivate.

public PrivateKey generatePrivate(PrivateKeyInfo pki) throws IOException {
    // get the inner type inside the BIT STRING
    ASN1Primitive innerType = pki.parsePrivateKey().toASN1Primitive();
    McEliecePrivateKey key = McEliecePrivateKey.getInstance(innerType);
    return new BCMcEliecePrivateKey(new McEliecePrivateKeyParameters(key.getN(), key.getK(), key.getField(), key.getGoppaPoly(), key.getP1(), key.getP2(), key.getSInv()));
}

Example 3 with McEliecePrivateKeyParameters

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

the class McElieceKeyPairGeneratorSpi method generateKeyPair.

public KeyPair generateKeyPair() {
    AsymmetricCipherKeyPair generateKeyPair = kpg.generateKeyPair();
    McEliecePrivateKeyParameters sk = (McEliecePrivateKeyParameters) generateKeyPair.getPrivate();
    McEliecePublicKeyParameters pk = (McEliecePublicKeyParameters) generateKeyPair.getPublic();
    return new KeyPair(new BCMcEliecePublicKey(pk), new BCMcEliecePrivateKey(sk));
}