sign | 易学教程

Multiple OpenSSL RSA signing methods produce different results

阅读更多关于 Multiple OpenSSL RSA signing methods produce different results

问题 Trying to wrap my head around signing and use/test various options. I can sign using this command: openssl dgst -sha256 -sign private_key.pem -binary -out sig_file data_file But the documentation seems to say that I can also use this method openssl dgst -sha256 -binary data_file > hash_file openssl rsautl -sign -inkey private_key.pem -keyform PEM -in hash_file > sig_file2 But the signatures are different when I\'d expect them to be identical. Either I missed something in the options or

node项目实战-用node-koa2-mysql-bootstrap搭建一个前端论坛

阅读更多关于 node项目实战-用node-koa2-mysql-bootstrap搭建一个前端论坛

前言在学习了koa2和express并写了一些demo后，打算自己写一个项目练练手，由于是在校生，没什么好的项目做，即以开发一个前端论坛为目标，功能需求参照一下一些社区拟定，主要有：登录注册个人信息维护、头像等基本信息发表文章，富文本编辑器采用wangEditor插件，编辑、删除文章,文章分类等文章评论、文章收藏、点赞等支持文章分页、评论分页加载关注取关用户资源（文件）上传分享、下载、查看学习资源推荐..... 作者个人日记 but。。。。由于种种原因，目前仅实现了部分功能，资源分享还没写项目运行效果： http://120.77.211.212/home 项目技术栈应用：node-koa2-ejs-bootstrap3—jquery， github地址： https://github.com/Jay214/myb... ，如果觉得对你有帮助或者还看得下去，欢迎star~~鼓励鼓励我这前端渣渣辉。开发环境 node: v8.3.0 koa: ^2.4.1 mysql: 5.7.1 npm: 5.3.0及以上如何运行项目将项目clone至本地 git clone git@github.com:Jay214/myblog-koa2.git 安装模块中间件 npm install 安装mysql mysql版本推荐使用5.7以下的，5.7的有个bug

Given URL is not allowed by the Application configuration

阅读更多关于 Given URL is not allowed by the Application configuration

问题 I am trying to create facebook sign-in page according to this tutorial. I only changed the two lines appId : \'370675846382420\', // App ID channelUrl : \'//http://bp.php5.cz/channel.html\', // Channel File and I get the following error Given URL is not allowed by the Application configuration.: One or more of the given URLs is not allowed by the App\'s settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App\'s domains. What might be the

C++大数模板

阅读更多关于 C++大数模板

#include<bits/stdc++.h> //大整数 struct BigInteger { static const int BASE = 100000000;//和WIDTH保持一致 static const int WIDTH = 8;//八位一存储,如修改记得修改输出中的%08d bool sign;//符号, 0表示负数 size_t length; std::vector<int> num;//反序存 //构造函数 BigInteger(long long x = 0) { *this = x; } BigInteger(const std::string &x) { *this = x; } BigInteger(const BigInteger &x) { *this = x; } //剪掉前导0 void cutLeadingZero() { while (num.back() == 0 && num.size() != 1) { num.pop_back(); } } //设置数的长度 void setLength() { cutLeadingZero(); int tmp = num.back(); if (tmp == 0) { length = 1; } else { length = (num.size() - 1) * WIDTH; while

Android接入支付宝支付服务

阅读更多关于 Android接入支付宝支付服务

简介首先要说明的是个人感觉接入支付宝比微信简单多了，很轻松的，所以同学们不要紧张~ 当然还是老规矩啦，上来肯定的贴上官网地址，因为我这些服务天天在更新，而我的文章是教大家方法，而让你不是照葫芦画瓢进入app支付文档有两种方式，一种是直接在下面的开放业务里还有一种是通过上面的导航栏文档中心，然后滚动到业务接入那一栏，可以看到移动支付当然也可以直接打开这个地址，文档还是挺多，可以关注我勾选的这几项首先这里我也要说明的是个人是不能申请的，只能是企业，所以我demo里面的用的一些资料也是demo里面的这里是交互流程的官方文档，需要详细的可以点进去看看运行Demo 我们来到官方demo的下载地址可以看到有两个，选择你需要的就行了，下载解压完直接导入eclipse并配置一些参数运行就可以查看效果了导入jar 将demo里面的alipaySdk-20160223.jar拷贝到我们工程的libs下，并添加到依赖中配置权限 <uses-permission android:name= "android.permission.INTERNET" /> <uses-permission android:name= "android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name=

what's the meaning of %r in python

阅读更多关于 what's the meaning of %r in python

问题 what\'s the meaning of %r in the following statement? print \'%r\' % (1) I think I\'ve heard of %s , %d , and %f but never heard of this. 回答1: Background: In Python, there are two builtin functions for turning an object into a string: str vs. repr. str is supposed to be a friendly, human readable string. repr is supposed to include detailed information about an object's contents (sometimes, they'll return the same thing, such as for integers). By convention, if there's a Python expression

使用RSA算法对接口参数签名及验签

阅读更多关于使用RSA算法对接口参数签名及验签

　　在不同的服务器或系统之间通过API接口进行交互时，两个系统之间必须进行身份的验证，以满足安全上的防抵赖和防篡改。　　通常情况下为了达到以上所描述的目的，我们首先会想到使用非对称加密算法对传输的数据进行签名以验证发送方的身份，而RSA加密算法是目前比较通用的非对称加密算法，经常被用于数字签名及数据加密，且很多编程语言的标准库中都自带有RSA算法的库，所以实现起来也是相对简单的。　　本文将使用Java标准库来实现RSA密钥对的生成及数字签名和验签，密钥对中的私钥由请求方系统妥善保管，不能泄漏；而公钥则交由系统的响应方用于验证签名。　　RSA使用私钥对数据签名，使用公钥进行验签，生成RSA密钥对的代码如下： package com.springboot.RSAdemo; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.security.NoSuchAlgorithmException; import java.security.interfaces.RSAPrivateKey; import java.security.interfaces.RSAPublicKey; import java.util.Base64; /** * @description

Signing a Windows EXE file

阅读更多关于 Signing a Windows EXE file

问题 I have an EXE file that I should like to sign so that Windows will not warn the end user about an application from an \"unknown publisher\". I am not a Windows developer. The application in question is a screensaver generated from an application that generates screensaver applications. As such I have no influence on how the file is generated. I\'ve already found out that I will need a code signing certificate from a CA like Verisign or instantssl.com. What I don\'t understand is what I need

Sign PDF with plain JavaScript

阅读更多关于 Sign PDF with plain JavaScript

问题 With WebCrypto API evolving and being supported by Chrome and Firefox, I would like to use it for digitally signing a PDF document. There is not much of literature around, but I found some examples [1] and a library called PKI.js [2]. In the examples, the signing process is described, but in the end, a signature is returned. I would expect my Base64 PDF file returned again in a signed Base64 string, but sadly, this is not what happens. PKI.js too, to my knowledge, does not provide a way to

Python实现腾讯云CDB备份文件自动上传到COS

阅读更多关于 Python实现腾讯云CDB备份文件自动上传到COS

一、背景需求：目前遇到的客户需求为将腾讯云CDB备份文件自动上传到腾讯云COS内，在此抛砖引玉，还有很多类似的需求均可以采用此类方法解决，线下IDC数据文件备份至云端COS内，或根据文件下载地址url将文件上传至COS内。思路：首先获取到CDB的备份下载url，通过COS的API上传文件，大佬如有更好的方法欢迎一块讨论。二、技术细节 COS：COS有API同时有SDK，这就很方便我们来通过Python对COS进行各类操作， COS SDK for Python CDB：CDB有API但是CDB的查询备份下载没有对应的SDK，此时只能通过API来进行获取，腾讯云API的签名很复杂，要进行：构造参数字典->对dict排序->拼接sign->对sign编码->拼接完成最终url->完成调用，签名方法，查询备份API requirements: cos-python-sdk-v5==1.5.2 requests==2.19.1 tencentcloud-sdk-python==3.0.15 urllib3==1.23 文件目录结构三、代码 github地址 3.1 配置文件 # auth:kaliarch # func:将腾讯云cdb备份文件上传至cos制定的bucket内 # python version:python3+ # cos version:v5 # https:

订阅 sign