cryptography

Can't import PFX to Microsoft Sample Key Storage Provider (Cryptographic Provider Development Kit)

由 限于喜欢 提交于 2021-02-19 08:23:08
问题 I'm trying to execute samples provided with "Cryptographic Provider Development Kit"; in this case an example specifically called KeyStorageProviderSample. In this sample, a new Key Storage Provider called "Microsoft Sample Key Storage Provider" is created in the system simply by executing the .exe with the -register param: symmclient -register At this point everything is ok; if I list the KSPs in the system I get the complete list: symmclient -enum The one just created, "Microsoft Sample Key

Is it possible to implement AES with a 64-bit I/O block size?

由 ↘锁芯ラ 提交于 2021-02-19 00:40:15
问题 I'm working on an application with a very specific encryption requirement: We are required to encrypt/decrypt individual 64-bit values, to protect certain parts of our internal architecture from reverse engineering through our public web endpoints. The problem is, the existing 64-bit encryption methods (such as 3DES) are not secure enough to meet our requirements (as far as I know). They also perform slower than AES, which is another painpoint. My question is, can we feasibly implement AES

How to validate a public and private key pair in Java

由 人盡茶涼 提交于 2021-02-18 00:01:33
问题 Is there a way to validate in java if the given private key, say certain *.key file matches with the certain public key, to a certain .pub file using RSA algorithm? 回答1: You can verify if a key pair matches by creating a challenge (random byte sequence of sufficient length) signing the challenge with the private key verifying the signature using the public key This gives you a sufficiently high confidence (almost certainity) that a key pair matches if the signature verification is ok, and an

How to validate a public and private key pair in Java

由 こ雲淡風輕ζ 提交于 2021-02-17 23:59:26
问题 Is there a way to validate in java if the given private key, say certain *.key file matches with the certain public key, to a certain .pub file using RSA algorithm? 回答1: You can verify if a key pair matches by creating a challenge (random byte sequence of sufficient length) signing the challenge with the private key verifying the signature using the public key This gives you a sufficiently high confidence (almost certainity) that a key pair matches if the signature verification is ok, and an

MD5加密

由 烂漫一生 提交于 2021-02-16 23:33:49
MD5全称是message-digest algorithm 5，MD5是一个单向加密（只能加密，不能解密（网上有暴力解密的，成功率很小）） MD5主要用途： 1、对一段信息生成信息摘要，该摘要对该信息具有唯一性,可以作为数字签名 2、用于验证文件的有效性(是否有丢失或损坏的数据) 3、对用户密码的加密 4、在哈希函数中计算散列值 5、安全性高 由于算法的某些不可逆特征，在加密应用上有较好的安全性。通过使用MD5加密算法，我们输入一个任意长度的字节串，都会生成一个128位的整数。所以根据这一点MD5被广泛的用作密码加密。 需要引入命名空间 using System.Security; using System.Security.Cryptography; 直接上代码 /// <summary> /// md5加密返回一个128位整数的方法 /// </summary> /// <param name="strs"> 需要加密的明文 </param> /// <returns></returns> public static string ToMD5( string strs) { MD5 md5 = new MD5CryptoServiceProvider(); byte [] bytes = Encoding.Default.GetBytes(strs); //

validating rsa signature from C# in java

由 梦想的初衷 提交于 2021-02-16 20:08:19
问题 I'm attempting to generate an RSA SHA512 signature on my server application (written in C#) and verify that signature on a client application (written in Java). Prior to the signature exchange, the server generates a public- and private-key pair and shares the public key with the client app by giving it the modulus and exponent values that were generated. The client app stores the values for later, when the signature needs to be verified. The server is generating a 128-byte modulus and a 128

validating rsa signature from C# in java

由 ╄→гoц情女王★ 提交于 2021-02-16 20:08:12
问题 I'm attempting to generate an RSA SHA512 signature on my server application (written in C#) and verify that signature on a client application (written in Java). Prior to the signature exchange, the server generates a public- and private-key pair and shares the public key with the client app by giving it the modulus and exponent values that were generated. The client app stores the values for later, when the signature needs to be verified. The server is generating a 128-byte modulus and a 128

Unity AssetBundle 教程

由 自古美人都是妖i 提交于 2021-02-14 21:55:05
Unity AssetBundle 教程 AssetBundle是Unity用来处理资源热更新的，下面简单介绍AssetBundle的所有操作。本教程使用的Unity版本：Unity 2018.2.12f1 (64-bit) AssetBundle打包 设置AssetBundle名字 手动设置 打包之前按照上图所示的方法，设置一下AssetBundle的名字。 自动设置 将需要进行AssetBundle打包的图片按照“UI_”的前缀命名，然后根据图片的父目录来设置AssetBundle的名字。如下所示 然后新建一个ImageImporter.cs文件放入Editor目录下 using UnityEngine; using UnityEditor; /// <summary> /// 根据名字前缀自动化设置图片的格式以及TAG等设置 /// </summary> public class ImageImporter : AssetPostprocessor { /// <summary> /// 图片导入之前调用，可设置图片的格式、spritePackingTag、assetBundleName等信息 /// </summary> void OnPreprocessTexture() { TextureImporter importer = (TextureImporter

把旧系统迁移到.Net Core 2.0 日记（11) -- Authentication 认证 claimsIdentity 对比 之前的FormAuthentication

由 给你一囗甜甜゛ 提交于 2021-02-12 05:25:23
实现最简单的认证,类似之前的FormAuthentication 在 Startup 的 ConfigureServices() 方法中添加 Authentication 的配置： 这个CookieAuthenticationDefaults类默认的登录地址是/Account/Login,如果要要修改 则可以在后面的AddCookie()方法里修改路径 services.AddAuthentication(options => { options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme; options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme; }).AddCookie(); 在 Startup 的 Configure() 方法 app.UseAuthentication(); AccountController方法 public class AccountController : Controller { private readonly CRMContext _context; public AccountController(CRMContext

AES-CMAC module for Node.js?

由 ε祈祈猫儿з 提交于 2021-02-11 17:23:46
问题 Is there a Node.js module that handles AES-CMAC (RFC 4493)? I've been searching around NPM, Google, and the like, but haven't found one. Somebody within my company built one that wraps Crypto++ as a C++ addon for Node.js, but unfortunately it doesn't build on Windows (depends on make ). Just looking for possible alternatives. This is similar to this other question, but I'm hoping for a Node.js specific implementation instead of a plain JavaScript one. Ideally something that makes use of Node
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