Android校验-阿里云

Android P中的AVB校验（二）

前言Android O/P 版本以来，谷歌加入了A/B system的特性，此时ramdisk和system是一起放在同一个system.img镜像中的。而系统起来之后也就不存在system分区了，而是直接把system镜像挂载到/根目录上。那么这个操作是怎么进行的呢？system.img默认是需要...

Android P中的AVB校验（一）

1、avb校验库的主入口avb校验功能主要是由external/avb/libavb库实现的，该库主要完成的工作包括各个分区镜像的校验，签名验证，以及vbmeta数据的解析，包括了各种flags的处理以及dm-verity所需要的参数解析。avb校验库的主入口为：avb_slot_verify(Av...

开源Android容器化框架Atlas开发者指南

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Android AVB的校验宏观的两个阶段

前言Android Verified Boot上有两个阶段，bootloader和init，每个阶段校验的内容都是不一样的。当然这个也不是绝对的，我觉得这个AVB的校验逻辑是可以用在很多的方面的，根据自己的启动方案可以设置很多的校验逻辑，这里就不展开了，说多了就不安全了。这里暂时分为两个阶段：boo...

Android安全启动学习（三）：AVB校验的内容、怎么校验、AVB的作用

前面学习了1、AVB是什么？校验安卓镜像的，完成整个安全启动的。2、安卓的镜像有什么？主要就那三个大玩意：boot、recover、system。3、有个 vbmeta.img还记得吗？bootloader验证vbmeta的签名**，再用vbmeta的key以及hash值验证dtbo/boot/sy...

Android安全启动学习（一）：AVB校验是什么？

最近老师让学习一下AVB，这玩意很难找到资料。只有网上搜索一些零碎的资料和博客。最多的资料就是官网的。这里来整理学习一下AVB的相关资料。1、AVB是什么？如果你知道安全启动ATF，那么到这里肯定是能接上的，如果没有那也不影响。我们的ATF在安全启动流程的时候走到了BL33，BL33一般就是boot...

【Android 逆向】ELF 文件格式 ( ELF 文件当前版本号 | 操作系统 ABI 信息 | ABI 版本 | 文件头校验 | 文件头长度信息 )

文章目录一、ELF 文件当前版本号二、操作系统 ABI 信息三、ABI 版本四、文件头校验五、文件头长度信息总结一、ELF 文件当前版本号ELF 文件头第 6 字节 : 版本信息 ;二、操作系统 ABI 信息ELF 文件头第 7 字节 : 操作系统 ABI 信息 ;三、ABI 版本ELF 文件头 ...

android 校验用户名密码手机邮箱身份证邮编等

package com.farmlink.most.util; import java.text.SimpleDateFormat; import java.util.Date; import java.util.regex.Matcher; import java.util.regex.Patte...

Android 悬浮窗权限校验

原文:Android 悬浮窗权限校验悬浮窗权限： <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /> 权限检验和请求： //检查是否已经授予权限，大于6.0的系统适用，小于6....

Android多进程之Binder的意外死亡及权限校验

Android多进程系列 Android 多进程通信之几个基本问题 Android多进程之Binder的使用 Android多进程之手动编写Binder类 Android多进程之Binder解绑监听的问题通过前几篇文章，我们对Binder的使用和工作流程有了一定的了解，但是还有几个问题休要我们去解...

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