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Many may have the same deep experience as myself. Using the OpenSSL library to write an encrypted communication process, the code can be easily written, but the entire work has taken several days. In addition to compiling the program successfully (no certificate file can be used, it is compiled successfully, it cannot run, it does not mean it can be used normally, So ......), you also need to generate necessary certificates and private key files so that both parties can successfully verify the o
Certificate file generation Many may have the same deep experience as myself. Using the OpenSSL library to write an encrypted communication process, the code can be easily written, but the entire work has taken several days. Except for compiling the program successfully (no certificate file can be used, it is compiled successfully and cannot run, it does not mean it can be used normally, so ......), You also need to generate necessary certificates and private key files so that both parties can
Certificate Online ToolIf you are applying for the SSL certificate for the first time, if you are unfamiliar with how your server uses SSL certificates, we recommend that you use this set of tools, which support all SSL server certificate formats and various Web servers. Helps you generate CSR files online, crafting PFX, JKS, p7b, KDB, and Pem files online. If you need to check that the certificate is installed properly after you install the certifica
format (aka IJV, triplet format) 7. dia_matrix: DIAgonal format To construct a matrix efficiently, use either dok_matrix or lil_matrix. The lil_matrix class supports basic slicing and fancy indexing with a similar syntax to NumPy arrays. As illustrated below, the COO format may also be used to efficiently construct matrices. To perform manipulations such as multiplication or inversion, first convert the matrix to either CSC or CSR format. Th
First, let's take a look at the configuration of vivo X6S Plus. It uses a Qualcomm Yunlong 652 eight-core processor, with 4 gb ram and 64 gb rom. The screen uses a 5.7 inch 1080 P Super AMOLED screen, the camera uses a 16 million pixel rear camera and a 8 million front camera, and the battery power is 3000 mAh. We will also introduce the specific performance in the following individual evaluations. Vivo X6S Plus
After you enable Apache Mod_ssl, you need a certificate to function properly. Wrote a script to manipulate it. The first thing to make sure is that there are OpenSSL on the machine. Copy Code code as follows: #!/bin/sh # # The root directory for SSL certificate output.ssloutputroot= "/etc/apache_ssl"If [$#-eq 1]; ThenSsloutputroot=$1Fiif [!-D ${ssloutputroot}]; ThenMkdir-p ${ssloutputroot}Fi CD ${ssloutputroot} echo "starts creating CA Root Certificates ..."## Create the CA r
they must be comprehensive. This feature has continued on the Smart platform. Friends who use MTK smart machines often find that their performance is not the strongest, on the contrary, the pursuit of detailed functions, such as ultra-long standby (power-saving), such as external connection capabilities (USB-OTG), naked eye 3D (Intel Graphics 3D display technology) and so on. MTK is very smart. While it ensures almost the same user experience as Qualcomm
Cool1 and red rice Note3 which is better? Differences between Cool1 and Note3Parameter comparisonFirst, let's take a look at the hardware configuration. From the parameter perspective, let's take a look at the differences between the two mobile phones. Comparison between Cool1 and Note3 Comparison model Cool1 Red rice Note3 Screen specification 5.5 inch 1920x1080 pixels
The CPU is the most complex, most expensive SOC (chip) on the phone, which is also the location of the brain in the cell phone, and is the decisive hardware for the performance of the mobile phone. The development of smartphones to today, the major mobile phone CPU manufacturers from the spring and autumn warring States gradually to the current four-country separation of the Times (Qualcomm, MTK, Samsung, apple a series). Of course, the largest CPU ve
Yesterday finally successfully submitted the application to the App Store, personally feel that using air as an iOS development is a hole ah. After the problem, ask Apple technical support, people say "for non-xcode environment problems caused by development and release, we can not find the corresponding solution in the database". Ask Adobe's technical support, "Do you follow the Developer Center tutorial?" "Yes" "can you successfully generate an IPA file?" "Yes" "OK, then your question should g
In order to save storage space and speed up parallel program processing, it is necessary to compress the sparse matrix, and the principle of compressing storage is that the same element is not stored repeatedly; 0 value elements are not stored. The storage formats of several commonly used matrices are as follows: COO,CSR,DIA,ELL,HYB, etc. in general, sparse matrices refer to matrices where the element is mostly 0 (some data defines a matrix that is no
directory. # mkdir rsaref-2.0 # CD rsaref-2.0 # gzip-d-C. /rsaref20.tar.z | Tar xvf- The OpenSSL library is now configured and constructed. # CD rsaref-2.0 # CP-RP Install/unix Local # CD Local # make # MV RSAREF.A LIBRSAREF.A # CD ... /.. Install OpenSSL. Remember, you will use it to create temporary certificates and CSR files. The--prefix option specifies the primary installation directory. # CD openssl-0.9.x #./config-prefix=/usr/loca
AIR for IOS development summary, airios I finally successfully submitted an application to the app store yesterday. I personally feel that using AIR for IOS development is a pitfall. After a problem occurs, ask Apple's technical support. "We cannot find the corresponding solution in the database for problems caused by development and release in non-XCODE environments ". Ask adobe's technical support. "Have you followed the Developer Center tutorial ?" "Yes" "Can you generate the IPA file success
AIR for IOS development Summary I finally successfully submitted an application to the app store yesterday. I personally feel that using AIR for IOS development is a pitfall. After a problem occurs, ask Apple's technical support. "We cannot find the corresponding solution in the database for problems caused by development and release in non-XCODE environments ". Ask adobe's technical support. "Have you followed the Developer Center tutorial ?" "Yes" "Can you generate the IPA file successfully ?
client newcerts Echo 01> serial Echo 01> crlnumber Touch index.txt1.2 OpenSSL configuration preparation Modify OpenSSL configurations VI/etc/pki/tls/OpenSSL. CNF Comment out this sentence and replace it with the following sentence # Default_ca = ca_default Default_ca = ca_linvo Copy the entire [ca_default] Part and change it to the above name [Ca_linvo] Modify the following parameters: Dir =/etc/pki/ca_linvo Certificate = $ DIR/root/CA. CRT Private_key = $ DIR/root/CA. Key Save and exit2. Crea
An integer array with dimension ndiag . Element of the array is the i distance distance between i -diagonal and the main diagonal. The distance is positive if the diagonal are above the main diagonal, and negative if the diagonal is below the main Diagon Al. The main diagonal have a distance equal to zero. 3. Compressed Sparse Row Format (CSR)The Intel MKL compressed sparse row (CSR
In HTTPS learning note two, the concept of digital certificates has been clarified, composed and how the client validates the server-side certificate during the HTTPS connection process. This chapter describes how to use the OpenSSL library to create a key file, and to generate a root CA and issue a child certificate. Learn the main reference Official document: https://www.feistyduck.com/library/openssl-cookbook/online/ch-openssl.html#I. Introduction of OpenSSL OpenSSL is currently the most pop
Brew technology Overview Author: Wang Xiaochuan Brew, the wireless binary Operating Environment launched by Qualcomm, is an open standard thin application environment designed for wireless devices. With the BREW Platform, many wireless applications can be easily and quickly developed. Third-party developers, which were barely tied to the wireless market, can be involved in this new market. Due to the versatility of the BREW Platform, software develop
SSL security certificates can be generated on their own or through a third-party CA (certification authority) Certification Center payment request. SSL security certificates include: 1, CA certificate, also called root certificate or intermediate level certificate. For one-way authenticated HTTPS, the CA certificate is optional. The primary purpose is to make the certificate a chain of certificates to achieve the purpose of the browser trusting the certificate. If a CA certificate is used, both
SERVER.CSR > Server.crt For convenience, someone on the web is making a shell. Easy to generate. As follows: #!/bin/sh## The root directory for SSL certificate output.ssloutputroot= "/etc/apache_ssl"If [$#-eq 1]; ThenSsloutputroot=$1Fiif [!-D ${ssloutputroot}]; ThenMkdir-p ${ssloutputroot}FiCD ${ssloutputroot}echo "starts creating CA Root Certificates ..."## Create the CA root certificate, which is later used to sign the certificate for the server. If it is through a commercial CA such as# Veri
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