IAIK PKCS#11包装器: ECDH KeyAgreement示例

import iaik.pkcs.pkcs11.*;
import iaik.pkcs.pkcs11.objects.*;
import iaik.pkcs.pkcs11.wrapper.PKCS11Constants;

public class ECDHKeyAgreementExample {
    public static void main(String[] args) throws PKCS11Exception {
        // 初始化PKCS#11库
        Module pkcs11Module = Module.getInstance("path/to/pkcs11/library", "your_pkcs11_module_name", null, false);
        pkcs11Module.initialize(null);

        // 获取PKCS#11会话
        Token token = ...; // 获取要使用的令牌
        Session session = token.openSession(Token.SessionType.SERIAL_SESSION, Token.SessionReadWriteBehavior.RO_SESSION, null, null);

        // 登录令牌
        session.login(Session.UserType.USER, "your_user_pin".toCharArray());

        // 生成ECDH密钥对
        Mechanism keyPairGenerationMechanism = Mechanism.get(PKCS11Constants.CKM_EC_KEY_PAIR_GEN);
        ECDSAPublicKey publicKeyTemplate = new ECDSAPublicKey();
        ECDSAPrivateKey privateKeyTemplate = new ECDSAPrivateKey();
        publicKeyTemplate.getEcdsaParams().setKeyType(PKCS11Constants.CKK_EC);
        publicKeyTemplate.getEcdsaParams().setParams(new ECParameter(256)); // 设置椭圆曲线参数
        privateKeyTemplate.getSensitive().setExtractable(true);
        session.generateKeyPair(keyPairGenerationMechanism, publicKeyTemplate, privateKeyTemplate);

        // 获取生成的公钥和私钥对象
        ECDSAPublicKey generatedPublicKey = (ECDSAPublicKey) session.findObject(publicKeyTemplate).clone();
        ECDSAPrivateKey generatedPrivateKey = (ECDSAPrivateKey) session.findObject(privateKeyTemplate).clone();

        // 创建ECDH密钥协商对象
        KeyAgreement keyAgreement = KeyAgreement.getInstance("ECDH");
        keyAgreement.init(generatedPrivateKey);

        // 执行密钥协商
        keyAgreement.doPhase(generatedPublicKey, true);

        // 获取协商得到的共享密钥
        byte[] sharedSecret = keyAgreement.generateSecret();

        // 使用共享密钥进行加密或解密操作...
        
        // 关闭会话和PKCS#11库
        session.logout();
        session.closeSession();
        pkcs11Module.finalize(null);
    }
}