Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * 
 * Copyright (C) 2015 Orange Labs
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

import java.math.BigInteger;

import java.security.KeyFactory;

import java.security.PublicKey;

import java.security.spec.RSAPublicKeySpec;

import android.util.Log;

public class Main {
    static PublicKey getRsaPublicKey(String n, String e) {
        BigInteger rsaN = null;
        BigInteger rsaE = null;

        try {
            rsaN = new BigInteger(n);
            rsaE = new BigInteger(e);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        RSAPublicKeySpec pubRsaSpec = new RSAPublicKeySpec(rsaN, rsaE);
        try {
            KeyFactory keyfact = KeyFactory.getInstance("RSA", "SC");
            PublicKey pk = keyfact.generatePublic(pubRsaSpec);
            Log.d("getRsaPublicKey", "pubRsaKey OK " + pk.getFormat());
            return pk;
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return null;
    }
}