我一直在尝试使用CryptoJS解密ArrayBuffer对象,但到目前为止它总是返回一个空白的WordArray.文件(图像)在iOS和Android应用程序中加密,发送到服务器,并在此Web应用程序中下载以进行解密和显示.iOS和Android应用程序能够毫无问题地解密文件,因此加密过程没有任何问题.
XMLHttpRequest使用responseType设置为的方式下载文件arraybuffer.到目前为止,这是我的代码:
// Decrypt a Base64 encrypted string (this works perfectly)
String.prototype.aesDecrypt = function(key) {
var nkey = CryptoJS.enc.Hex.parse(key.sha256());
return CryptoJS.AES.decrypt(this.toString(), nkey, {
iv: CryptoJS.enc.Hex.parse('00000000000000000000000000000000'),
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7
}).toString(CryptoJS.enc.Utf8);
}
// Decrypt a plain encrypted ArrayBuffer (this is the problem, it always outputs an empty WordArray)
ArrayBuffer.prototype.aesDecrypt = function(key) {
// Get key
if (!key) return null;
var nkey = CryptoJS.enc.Hex.parse(key.sha256());
// Get input (if I pass the ArrayBuffer directly to the create function, …Run Code Online (Sandbox Code Playgroud) 我有一个Flyout带有TextBlock 的视图.文本块有多行文本的数量,我希望它像往常一样包装到下一行,但是当Flyout它用于它时滚动屏幕...如何禁用滚动视图Flyout?
弹出式XAML:
...
<AppBarButton.Flyout>
<Flyout Placement="Full">
<local:MyView/>
</Flyout>
</AppBarButton.Flyout>
...
Run Code Online (Sandbox Code Playgroud)
我的观点XAML:
<UserControl ...>
<Grid>
...
<TextBlock Text="Loading..." Style="{ThemeResource SubtitleTextBlockStyle}" Margin="10,0,10,20" Grid.Row="1" TextWrapping="Wrap"/>
</Grid>
</UserControl>
Run Code Online (Sandbox Code Playgroud)
它是这样的:
我一直在尝试为使用NPAPI插件的Chrome编写扩展程序.我正在使用mingw来编译它.我最初努力让Chrome加载插件,但现在我有一个不同的问题.
我设法让Chrome调用NP_GetEntryPoints和NP_Initialize,但在此之后它崩溃了.这是我到目前为止的代码......
main.cpp:
#include <iostream>
#include <cstdlib>
#include <Windows.h>
#include <npapi.h>
#include <npfunctions.h>
#define Exported extern "C" __declspec(dllexport)
NPNetscapeFuncs NPNFuncs;
Exported NPError NP_Initialize(NPNetscapeFuncs* pFuncs) {
if (pFuncs == NULL)
return NPERR_INVALID_FUNCTABLE_ERROR;
if (HIBYTE(pFuncs->version) > NP_VERSION_MAJOR)
return NPERR_INCOMPATIBLE_VERSION_ERROR;
if (pFuncs->size < sizeof(NPNetscapeFuncs))
return NPERR_INVALID_FUNCTABLE_ERROR;
// Save functions
NPNFuncs.size = pFuncs->size;
NPNFuncs.version = pFuncs->version;
NPNFuncs.geturlnotify = pFuncs->geturlnotify;
NPNFuncs.geturl = pFuncs->geturl;
NPNFuncs.posturlnotify = pFuncs->posturlnotify;
NPNFuncs.posturl = pFuncs->posturl;
NPNFuncs.requestread = pFuncs->requestread;
NPNFuncs.newstream = pFuncs->newstream;
NPNFuncs.write = pFuncs->write;
NPNFuncs.destroystream = pFuncs->destroystream;
NPNFuncs.status = pFuncs->status; …Run Code Online (Sandbox Code Playgroud) 我正在尝试在Amazon Linux实例上安装OpenCV以与Pastec一起使用.这是我第一次使用亚马逊服务,而且我没有太多使用linux的经验......
我如何安装OpenCV及其对Amazon Linux的依赖?
我尝试使用此命令添加EPEL存储库:
$ sudo yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
Run Code Online (Sandbox Code Playgroud)
...哪有效但仍然无法安装OpenCV ......
$ sudo yum --enablerepo=epel install opencv-core
Loaded plugins: priorities, update-motd, upgrade-helper
948 packages excluded due to repository priority protections
Nothing to do
Run Code Online (Sandbox Code Playgroud) amazon-ec2 ×1
arraybuffer ×1
c++ ×1
cryptojs ×1
encryption ×1
javascript ×1
linux ×1
npapi ×1
opencv ×1
windows ×1