Java生成公私鑰對

    public static synchronized KeyPair generateRSAKeyPair(int keysize, BigInteger publicExponent) {
        try {
            keyPairGen.initialize(new RSAKeyGenParameterSpec(keysize, publicExponent), new SecureRandom());
            return keyPairGen.generateKeyPair();
        } catch (Exception var3) {
            LOGGER.error("生成模長 =" + keysize + "，指數=" + publicExponent + "的RSA金鑰對失敗", var3);
            return null;
        }
    }

sample:

    public static void main(String[] args) throws Exception {
        KeyPair keyp = RSAUtils.generateRSAKeyPair(1408, RSAKeyGenParameterSpec.F0);
        PrivateKey privateKey = keyp.getPrivate();
        PublicKey publicKey = keyp.getPublic();
    }