cryptography | 易学教程

X509 Certificate with Subject UID

阅读更多关于 X509 Certificate with Subject UID

问题 I am loading a certificate from string like this: public static void Test() { byte[] arrayCertificate; arrayCertificate = Convert.FromBase64String("CERT_STRING"); X509Certificate2 clientCertificateFromXml = new X509Certificate2(arrayCertificate); Console.Write(clientCertificateFromXml); Console.ReadKey(); } But this certificate doesn't have a "Subject Unique Identifier" Take a look at this: http://en.wikipedia.org/wiki/X.509 (The part of Structure of a certificate ) And I want to know how can

X509 Certificate with Subject UID

阅读更多关于 X509 Certificate with Subject UID

How to validate Safety Net JWS signature from header data in Android app

阅读更多关于 How to validate Safety Net JWS signature from header data in Android app

问题 I'm using SafetyNet API for checking if device is rooted or not and using the below helpful code but this uses Android verification API to validate the JWT signature: https://github.com/scottyab/safetynethelper And I want to validate on client side only to reduce the overhead of another web service all and besides it has limitation on only 10k request per day. So after decoding the JWS i'm getting the below info Sample JWS message response xxxx.yyy.zzzz Header data {"alg":"RS256","x5c":["

Decryption Exception - length of the data to decrypt is invalid

阅读更多关于 Decryption Exception - length of the data to decrypt is invalid

问题 I am working in a C# application. We have common methods to store data on a file. These methods encrypt the data and store them on the file system. when we need the data, ReadData method decrypts the data and returns me plain text. This code works fine in normal cases if size of the text in small. but for a example text given below, the decryption code is throwing exception - length of the data to decrypt is invalid. The exception occurs at line // close the CryptoStream x_cryptostream.Close(

ntp时间同步（centos7为chrony）

阅读更多关于 ntp时间同步（centos7为chrony）

NTP服务搭建 ntp 和 ntpdate 区别　　1.两个服务都是centos自带的（centos7中不自带ntp）。ntp的安装包名是ntp,ntpdate的安装包是ntpdate。他们并非由一个安装包提供。　　2.ntp守护进程为ntpd，配置文件是/etc/ntp.conf 　　3.ntpdate用于客户端的时间矫正，非NTP服务器可以不启动NTP。简介： ntp 全名 network time protocol 。 NTP 服务器可以为其他主机提供时间校对服务。环境准备：两台服务器，一台作为 NTP 服务器，另一台作为 client 端向服务器同步时间测试。　　NTP服务器：156.0.26.6 　　client端：156.0.0.27 安装与配置：我们从配置文件的角度来讲解一下 ntp 的配置　　# For more information about this file, see the man pages 　　# ntp.conf(5), ntp_acc(5), ntp_auth(5), ntp_clock(5), ntp_misc(5), ntp_mon(5). 　　　　driftfile /var/lib/ntp/drift #默认即可。driftfile用来指定记录本机与上层NTP server之间的频率误差。单位是百万分之一秒。　　　　#

Error in python cryptography module: _RSAPrivateKey' object has no attribute 'sign

阅读更多关于 Error in python cryptography module: _RSAPrivateKey' object has no attribute 'sign

问题 In my Python code, I'm using cryptography module. I have a private key on disk. So, from documentation, I used this example to load that key. Then use that key to sign a message. But running the program throws AttributeError: '_RSAPrivateKey' object has no attribute 'sign' I looked in to source code of serialization module and check return type of load_pem_private_key(). The code requires some understanding of Abstract Base Classes. Seeking help here to debug this issue. Here's my code 1 from

ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

阅读更多关于 ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

问题 I get an error when pip builds wheels for the cryptography package. Error: LINK : fatal error LNK1181: cannot open input file 'libssl.lib' error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x86\\link.exe' failed with exit status 1181 ---------------------------------------- ERROR: Failed building wheel for cryptography Running setup.py clean for cryptography Failed to build cryptography ERROR: Could not build wheels

How to verify the digital signature of downloaded xml file in java

阅读更多关于 How to verify the digital signature of downloaded xml file in java

问题 I have an XML file, given below <OfflinePaperlessKyc referenceId="686820201209011401091"> <UidData> <Poi dob="21-01-1945" e="bd05902a34b7b9e4d92230ac6b0asded072c1c0945190ad357f9ceec387f6fd6" gender="M" m="ed4eeb1376575c1b59096cf5c41243re5f3d4146e0c63eb4cc08a6c22fa9afe5" name="Reepak Sangid"/> <Poa careof="S/O John Uncle" country="India" dist="Jaipur" house="1134 - B" landmark="80 Feet Road 200 Feet Baypass ke pass" loc="Heerapura Ajmer Road" pc="302024" po="" state="Kerala" street="Heera

Google sheet: import a library (CryptoJS)

阅读更多关于 Google sheet: import a library (CryptoJS)

问题 I'm using the google sheet webscript to manipulate spreadsheet data and I want to use the following function to encrypt certain cells: var encrypted = CryptoJS.AES.encrypt("message", "Secret key"); There's an option to add libraries to the Google Sheet webscript but I have no idea how to get a library installed. According to the Google documentation you need the project key/script ID in order to use the library, but I have not been able to find this kind of information. Can someone assist in

2018-2019-2 20175227张雪莹《Java程序设计》实验三《敏捷开发与XP实践》

阅读更多关于 2018-2019-2 20175227张雪莹《Java程序设计》实验三《敏捷开发与XP实践》

2018-2019-2 20175227张雪莹《Java程序设计》实验三《敏捷开发与XP实践》实验报告封面课程：Java程序设计班级：1752班姓名：张雪莹学号：20175227 指导教师：娄嘉鹏实验日期：2019年4月29日实验时间：--- 实验序号：实验三实验名称：敏捷开发与XP实践实验题目：实验要求：完成实验三敏捷开发与XP实践中的内容，参考Java密码学算法相关内容其中Eclipse相关的内容参考Intellj IDEA简易教程换成IDEA实现完成云班课中的检查点，也可以先完成实验报告，直接提交。注意不能只有截图，要有知识点，原理，遇到的问题和解决过程等说明。实验报告中一个检查点要有多张截图。发表实验报告博客，标题“学期（如2018-2019-2）学号（如20175300）实验三《敏捷开发与XP实践》实验报告” 实验步骤代码规范要求：敏捷开发与XP实践 http://www.cnblogs.com/rocedu/p/4795776.html , Eclipse的内容替换成IDEA 参考 http://www.cnblogs.com/rocedu/p/6371315.html#SECCODESTANDARD 安装alibaba 插件，解决代码中的规范问题。在IDEA中使用工具（Code->Reformate