Java ECUtil.encodeECParameterSpec方法代码示例

import sun.security.util.ECUtil; //导入方法依赖的package包/类
@Override
protected byte[] engineGenerateSecret() throws IllegalStateException {
    if ((privateKey == null) || (publicValue == null)) {
        throw new IllegalStateException("Not initialized correctly");
    }

    byte[] s = privateKey.getS().toByteArray();
    byte[] encodedParams =                   // DER OID
        ECUtil.encodeECParameterSpec(null, privateKey.getParams());

    try {

        return deriveKey(s, publicValue, encodedParams);

    } catch (GeneralSecurityException e) {
        throw new ProviderException("Could not derive key", e);
    }

}
 

import sun.security.util.ECUtil; //导入方法依赖的package包/类
private PrivateKey generatePrivate(BigInteger s, ECParameterSpec params)
        throws PKCS11Exception {
    byte[] encodedParams =
        ECUtil.encodeECParameterSpec(getSunECProvider(), params);
    CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
        new CK_ATTRIBUTE(CKA_CLASS, CKO_PRIVATE_KEY),
        new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC),
        new CK_ATTRIBUTE(CKA_VALUE, s),
        new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams),
    };
    attributes = token.getAttributes
            (O_IMPORT, CKO_PRIVATE_KEY, CKK_EC, attributes);
    Session session = null;
    try {
        session = token.getObjSession();
        long keyID = token.p11.C_CreateObject(session.id(), attributes);
        return P11Key.privateKey
            (session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes);
    } finally {
        token.releaseSession(session);
    }
}
 

import sun.security.util.ECUtil; //导入方法依赖的package包/类
@Override
public KeyPair generateKeyPair() {

    byte[] encodedParams =
        ECUtil.encodeECParameterSpec(null, (ECParameterSpec)params);

    // seed is twice the key size (in bytes) plus 1
    byte[] seed = new byte[(((keySize + 7) >> 3) + 1) * 2];
    if (random == null) {
        random = JCAUtil.getSecureRandom();
    }
    random.nextBytes(seed);

    try {

        Object[] keyBytes = generateECKeyPair(keySize, encodedParams, seed);

        // The 'params' object supplied above is equivalent to the native
        // one so there is no need to fetch it.
        // keyBytes[0] is the encoding of the native private key
        BigInteger s = new BigInteger(1, (byte[])keyBytes[0]);

        PrivateKey privateKey =
            new ECPrivateKeyImpl(s, (ECParameterSpec)params);

        // keyBytes[1] is the encoding of the native public key
        ECPoint w = ECUtil.decodePoint((byte[])keyBytes[1],
            ((ECParameterSpec)params).getCurve());
        PublicKey publicKey =
            new ECPublicKeyImpl(w, (ECParameterSpec)params);

        return new KeyPair(publicKey, privateKey);

    } catch (Exception e) {
        throw new ProviderException(e);
    }
}
 

import sun.security.util.ECUtil; //导入方法依赖的package包/类
private PublicKey generatePublic(ECPoint point, ECParameterSpec params)
        throws PKCS11Exception {
    byte[] encodedParams =
        ECUtil.encodeECParameterSpec(getSunECProvider(), params);
    byte[] encodedPoint =
        ECUtil.encodePoint(point, params.getCurve());

    // Check whether the X9.63 encoding of an EC point shall be wrapped
    // in an ASN.1 OCTET STRING
    if (!token.config.getUseEcX963Encoding()) {
        try {
            encodedPoint =
                new DerValue(DerValue.tag_OctetString, encodedPoint)
                    .toByteArray();
        } catch (IOException e) {
            throw new
                IllegalArgumentException("Could not DER encode point", e);
        }
    }

    CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
        new CK_ATTRIBUTE(CKA_CLASS, CKO_PUBLIC_KEY),
        new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC),
        new CK_ATTRIBUTE(CKA_EC_POINT, encodedPoint),
        new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams),
    };
    attributes = token.getAttributes
            (O_IMPORT, CKO_PUBLIC_KEY, CKK_EC, attributes);
    Session session = null;
    try {
        session = token.getObjSession();
        long keyID = token.p11.C_CreateObject(session.id(), attributes);
        return P11Key.publicKey
            (session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes);
    } finally {
        token.releaseSession(session);
    }
}
 

import sun.security.util.ECUtil; //导入方法依赖的package包/类
@Override
public KeyPair generateKeyPair() {

    byte[] encodedParams =
        ECUtil.encodeECParameterSpec(null, (ECParameterSpec)params);

    // seed is twice the key size (in bytes) plus 1
    byte[] seed = new byte[(((keySize + 7) >> 3) + 1) * 2];
    if (random == null) {
        random = JCAUtil.getSecureRandom();
    }
    random.nextBytes(seed);

    try {

        long[] handles = generateECKeyPair(keySize, encodedParams, seed);

        // The 'params' object supplied above is equivalent to the native
        // one so there is no need to fetch it.

        // handles[0] points to the native private key
        BigInteger s = new BigInteger(1, getEncodedBytes(handles[0]));

        PrivateKey privateKey =
            new ECPrivateKeyImpl(s, (ECParameterSpec)params);

        // handles[1] points to the native public key
        ECPoint w = ECUtil.decodePoint(getEncodedBytes(handles[1]),
            ((ECParameterSpec)params).getCurve());
        PublicKey publicKey =
            new ECPublicKeyImpl(w, (ECParameterSpec)params);

        return new KeyPair(publicKey, privateKey);

    } catch (Exception e) {
        throw new ProviderException(e);
    }
}
 

import sun.security.util.ECUtil; //导入方法依赖的package包/类
static byte[] encodeParameters(ECParameterSpec params) {
    return ECUtil.encodeECParameterSpec(getSunECProvider(), params);
}