cryptography | 易学教程

XML to PEM in Node.js

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问题 I'm stuck with the crypto api because I know little about cryptography. I have this XML: <RSAKeyValue> <Modulus>1znidPBIcMcO7K/53tkTSyKqxlG5Mcws8kVtijS4tyEU4W/FEVWYpOtv+Stnb4Vt</Modulus> <Exponent>AQAB</Exponent> </RSAKeyValue> Signature: rNbdUP-p4pEGfwQSwR6VPvAVZ-sZu-ptgw8SofYYmNTlfUB9iUbb593eCAuT5jsqDTC Original data: <xml>...some big xml...</xml> I want to verify the signature, how do I do that? (I'm using node v0.10.18) 回答1: I'm not really a node.js dev, so this is super hacky.. Here's a

Rijndael support in Java

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问题 We have a requirement to do some Rijndael development in Java. Any recommendations for articles, libraries etc. that would help us? Any pointers to keystore maintenance and how store the keys securely? Edit: It would need to be open source. Essentially, it's just standard encrypt / decrypt of data using Rijndael. 回答1: Java includes AES out of the box. Rijndael is AES. You don't need any external libraries. You just need something like this: byte[] sessionKey = null; //Where you get this from

MCrypt rijndael-128 to OpenSSL aes-128-ecb conversion

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问题 Since Mcrypt is deprecated, I want to use OpenSSL instead in my code since we already using php 7.0.17 in our server and there's no tell when they upgrade it. Some third party API (hosted on PHP 5.x probably and using mcrypt ), is taking encrypted data. They've provided methods which they are using to encrypt/decrypt strings. Here are they $secret = 'a0a7e7997b6d5fcd55f4b5c32611b87c' ; public function encrypt128($str) { $block = mcrypt_get_block_size("rijndael_128", "ecb"); $pad = $block -

Generate and Sign Certificate Request using pure .net Framework

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问题 I am trying to use pure .net code to create a certificate request and create a certificate from the certificate request against an existing CA certificate I have available (either in the Windows Certificate store or as a separate file). I know that I have the classes X509Certificate and X509Certificate2 available to load certificates and get access to their information, but I don't see any classes or functionality within the System.Security.Cryptography namespace that could be used to create

Generate and Sign Certificate Request using pure .net Framework

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php的openssl_private_encrypt的python实现

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 参考： https://github.com/klokantech/flask-fastspring/blob/0462833f67727cba9755a26c88941f11f0159a48/flask_fastspring.py def openssl_private_encrypt(key, data, backend): """Encrypt data with RSA private key. This is a rewrite of the function from PHP, using cryptography FFI bindings to the OpenSSL library. Private key encryption is non-standard operation and Python packages either don't offer it at all, or it's incompatible with the PHP version. The backend argument MUST be the OpenSSL cryptography backend. """ length = backend._lib.EVP_PKEY_size(key._evp_pkey)

微信退款异步通知解密异常->填充无效，无法被移除

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 该问题是怎么引起的？ AESDecrypt 加密处理发生异常重现步骤使用模拟工具 POSTMan 发送模拟通知示例报文一： <return_code>SUCCESS</return_code><mch_id></mch_id><nonce_str></nonce_str><req_info></req_info> 报错信息 System.Security.Cryptography.CryptographicException: 填充无效，无法被移除。解密函数代码问题原因商户密码错误导致来源： oschina 链接： https://my.oschina.net/u/559187/blog/3028072

How to perform Client Side Encryption in iOS AWS SDK?

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问题 is it Available ? or should I choose my own algorithm to encrypt data and upload it to the S3-bucket? I'm having a requirement to create an application in multiplatform(android/C#/ios) in which we have to encrypt data and Store it to the server side . . . I've tried this library to encrypt data, but in iOS side, I'm having different results than others . . . 回答1: I uploaded a video on aws s3 bucket with client side encryption using below code. We need the AES256 key and md5 key when going to

Why I should not use my custom encryption algorithm? [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 3 years ago . I am currently working on an application and I am at the stage of encrypting the data. I thought of using Security through Obscurity via implementing my encryption algorithm. However, many articles that I have read had suggested that using custom cryptographic algorithm is usually

import a certificate using CryptUIWizImport automatically as a trusted root with C++

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问题 I am using the following code to import a certificate as a trusted root: #include "stdafx.h" #include "windows.h" #include "Cryptuiapi.h" #pragma comment(lib, "Cryptui.lib") int _tmain(int argc, _TCHAR* argv[]){ CRYPTUI_WIZ_IMPORT_SRC_INFO importSrc; memset(&importSrc, 0, sizeof(CRYPTUI_WIZ_IMPORT_SRC_INFO)); importSrc.dwSize = sizeof(CRYPTUI_WIZ_IMPORT_SRC_INFO); importSrc.dwSubjectChoice = CRYPTUI_WIZ_IMPORT_SUBJECT_FILE; importSrc.pwszFileName = L“C:\\PathToCert\\MyCertificate.cer”;