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如何进一步使用Diffie hellman密钥交换生成的共享密钥来获得密钥导出函数。diffie hellman密钥交换生成共享密钥的密钥导出函数
这是我的代码:
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDH", "BC");
ECGenParameterSpec ecsp;
ecsp = new ECGenParameterSpec("secp192r1");
keyGen.initialize(ecsp, new SecureRandom());
// Generate RSA Assymetric KeyPair
KeyPair alice_pair = keyGen.generateKeyPair();
// Extract Public Key
PublicKey alice_pub = alice_pair.getPublic();
// Extract Private Key
PrivateKey alice_pvt = alice_pair.getPrivate();
KeyAgreement alice_agreement = KeyAgreement.getInstance("ECDH","BC");
alice_agreement.init(alice_pair.getPrivate());
alice_agreement.doPhase(bob_pub, true);
byte[] alice_secret = alice_agreement.generateSecret();
SecretKeySpec alice_aes = new SecretKeySpec(alice_secret, "AES");
// Create KeyAgreement for Bob
KeyAgreement bob_agreement = KeyAgreement.getInstance("ECDH","BC");
bob_agreement.init(bob_pvt);
bob_agreement.doPhase(alice_pub, true);
可以共享的秘密可以是ECC曲线点?
谢谢@vojta,但通过执行上述代码中显示的密钥协议,我得到了16字节字符串的共享密钥。任何关于如何获得共享秘密的建议。 –