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Weather Observations

Build a tool to mine the logs of a weather balloon for important information.

Requirements

There is a weather balloon traversing the globe, periodically taking observations. At each observation, the balloon records the temperature

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package com.opentok.media.avc;

import java.io.IOException;
import java.nio.ByteBuffer;

import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;

public class AvcEncoder {

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# Convert base64 string from Google to a pem file
openssl enc -base64 -d -in publickey.base64 -A | openssl rsa -inform DER -pubin > public.pem
 
# Decode base64 signature to binary
openssl base64 -d -A -in signature.txt -out signature.sha1
 
# Verify signature
openssl dgst -sha1 -verify public.pem -signature signature.sha1 receipt.json

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Grab the certificate from the HTTPS server (e.g. Google)
$ openssl s_client -connect google.com:443

Generate a Java keystore from certificate

$ wget http://bouncycastle.org/download/bcprov-jdk16-146.jar
$ keytool -importcert -file your_signing_certificate.pem -keystore app.keystore -provider org.bouncycastle.jce.provider.BouncyCastleProvider -providerpath bcprov-jdk16-146.jar -storetype BKS

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/*
 * Copyright (C) 2012 CyberAgent
 *
 * 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

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package com.snepo.common.widgets;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Path.Direction;
import android.graphics.Path.FillType;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;