Android数据传输中的参数加密代码示例

/** 
   * 对post请求数据进行加密 
   * @param params 
   * @return 
   * @throws Throwable 
   */
public static byte[] encryptParams(HashMap<String, String> params) throws Throwable{
	if (params == null){
		return null;
	}
	StringBuilder stringBuilder = new StringBuilder();
	Iterator<Map.Entry<String, String>> iterator = params.entrySet().iterator();
	while (iterator.hasNext()){
		Map.Entry<String,String> entry = iterator.next();
		String key = entry.getKey();
		String value = entry.getValue();
		if (stringBuilder.length() > 0){
			stringBuilder.append("&");
		}
		stringBuilder.append(key).append("=").append(Uri.encode(value));
	}
	byte[] buff = stringBuilder.toString().getBytes("utf-8");
	byte[] iv = new byte[16];
	Random random = new Random();
	random.nextBytes(iv);
	byte[] data = Aes.encrypt(buff,PASSWORD,iv);
	ByteArrayOutputStream baos = new ByteArrayOutputStream();
	baos.write(iv,0,iv.length);
	baos.write(data,0,data.length);
	byte[] out = baos.toByteArray();
	try {
		baos.close();
	}
	catch (Throwable e){
		e.printStackTrace();
	}
	return out;
}

将  
android.util.Base64.encodeToString(input, Base64.DEFAULT) 
换成 
android.util.Base64.encodeToString(input, Base64.NO_WRAP); 

// 加密： 
byte[] bodyBytes = RequestManager.encryptParams(hashMap); 
// 使用base64encode做最后的加密 
String result = new BASE64Encoder().encode(bodyBytes); 
String ans_url = headUrl + result.replaceAll("\n","");