Most voted "certified" questions
Digital certificate is a file containing information relating to the entity for which it was issued (company, individual or computer), plus the public key referring to the private key believed to be held solely by the entity specified in the certificate.
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29
votes3
answers880
viewsWhat are the security impacts of a site that has an invalid certificate?
Many Brazilian government websites often do not have valid safety certificates. Examples: https://www.ibama.gov.br/ (expired) https://www.ibge.gov.br/ (auto-signed, invalid URL)…
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18
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answer2413
viewsHow to generate a pdf file containing the digital certificate information?
I have a PHP system that generates a pdf, and I need to use the client’s Digital Certificate to sign this document. I’ve been reading documents, and I saw that the FPDF that I use does not yet…
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16
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answer669
viewsFree SSL certificates Let’s Encrypt has the same reliability as paid?
Encryption TLS is the one used by lets encrypt and uses the protocol acme that makes the file exchange between server - client, I realize that when using https websites get a small delay I have…
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15
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answers7861
viewsCreating and Validating Java Digital Signature
I’m trying to sign a test NFE with a self-signed digital certificate through the code below. The code at first works, the signature is generated in the file and the validation done through the…
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12
votes3
answers423
viewsHow to choose a digital certificate? What to take into account?
I’m working in a virtual store, and I need to know which is the best certificate Custo x Benefício, need to indicate a certificate to the client, but this is the first time I work with a.…
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12
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answers10007
viewsA3 Digital Certificate, e-CPF, how to access information with Javascript
I am having to develop an application, which for security purposes, it is necessary to use an e-CPF by users when trying to log in. I just need to check if the e-CPF number matches the registered…
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12
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answer3396
viewsHow does authentication with digital certificate work?
I want to authenticate via digital certificate in a web application. I have been able to read the data of my digital certificate that is connected to my machine. The question is: "How to…
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9
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answer2436
viewsWhat is the correct order of the ICP-Brazil certificate chain so that the certificate of an e-CPF and e-CNPJ is requested via TLS Handshake?
To authenticate a user using the digital certificate, and to obtain this certificate in the backend it is necessary to enable the "SSL/TSL Handshake" option on the web server with the option to…
authentication ssl certified digital-signature brazilasked 7 years, 2 months ago LeonanCarvalho 3,527 -
8
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answer3149
viewsDigital signature of software
I use the Antivirus Kaspersky and for it to allow my software, written in Delphi, run I needed to mark it as reliable software. The reason that the Kaspersky was that the software is unreliable…
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8
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answer7789
viewsHow to sign documents with digital certificate?
I would like to know how to sign documents with digital certificate using Delphi or Lazarus. If someone knows of some component, free preference, or some function that I can use would help a lot.…
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8
votes2
answers11564
viewsDigital Certificate with PHP
I am developing a system in which I need to implement the use of A3 digital certificate so that the documents attached to the system have legal value. How is this done? Is it possible to do it in…
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7
votes3
answers232
viewsChange CRT file to byte
I need to convert a file .crt byte to be able to send by socket. This code works in Java, but how would I write it on Android? Path path = Paths.get("sdcard/certificado.crt"); byte[] certificado =…
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7
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answers2007
viewsHow to obtain information from an SSL Certificate via C#?
How to obtain information (expiry date for example) from an SSL certificate via C#?
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7
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answer396
viewsTesting with digital certificates
I wonder if anyone knows a way to test with digital certificates. I have the following situation, my system works normally with digital certificates. However when the configured certificate expires…
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7
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answers686
viewsHow to make webscrapping of an https using rvest?
I would like to shave a page that is in https using the package rvest. However, it is a website with problems in the security certificate. In such cases, you need to turn off the SSL verification --…
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6
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answer4038
viewsHow do I convert a . PFX certificate to . PEM?
I exported a file .pfx of my A3 certificate. How do I convert it to .pem. In VB.Net if possible.
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6
votes2
answers5569
viewsHow to read a digital certificate file with php
I have a system where it does digital certificate storage, I need some information in addition to the file itself, one such information is the expiration date of the certificate. The question is,…
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6
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answer1437
viewsRetrieve information from digital certificate
I’m working with digitally signed PKCS#7 PDF files. I searched the Internet and I can’t find a way to retrieve subscriber information. Using the class SignedCms I can even get some information when…
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6
votes0
answers1020
viewsDigital Certificate Login ( E-CPF, E-CNPJ ) with Servlet / JSP
Hello. I’m looking to develop a login system similar to what government portals use ( E-CAC, NFE and the like ), where E-CNPJ is used to log in. I did the following: 1) I created and signed an RSA…
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6
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answer4278
viewsHow to sign a PDF digitally in C#?
I need to digitally sign one PDF previously created. This PDF is being created through a Web Service who uses the Interop of Office to generate from a Template Office. I already have access to ICP…
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6
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answers496
viewsWhat is the technical difference between SSL and EV SSL certificates?
I am in the implementation phase of the Cielo API on my website. On the integration site there are two types of certificatesat that link, EV SSL, and SSL. Honestly I am dealing with certificate for…
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6
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answer1756
viewsIs it possible to create a certificate in PFX format and set an OID for some parameters?
I need to generate a certificate to simulate an e-CPF. I am creating an implementation to query and validate the digital certificate information e-CPF and e-CNPJ with my application. The extraction…
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5
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answer9990
viewsJava Tutorial for Reading A3 Digital Certificate
I am looking for a tutorial for implementing read cards with A3 digital certificate. I’ve never worked with anything like this before and now this need has arisen. I searched some things on the web…
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5
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answers7208
viewsHow to select Digital User Certificate in Web Applications?
I am developing a project in ASP.NET MVC5 to make manifestation of electronic invoices. During the process of searching notes, manifestation or download, I access the Internal Revenue Service and…
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5
votes1
answer7857
viewsWhat is the difference between . cer, . pfx and . pvk?
I was tinkering with some files that are certified digital and security certificates, so I came up with the question: What’s the difference between a file .cer, .pfx and .pvk?…
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4
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answer401
viewsHow does an e-CPF work?
I do not have a Card or Token, but I would like to know how it works because in the future I must use in the system to generate Certified/Digitally Signed Medical Reports. I have some questions:…
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4
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answer4499
viewsOpen modal with Javascript to select certificate and send to server
When we enter the page eCAC - Virtual Call Center and we click on Digital Certificate on the right side of the screen a modal is opened to select certain certificate that we configure in the system…
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4
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answer1918
viewsWEBAPI AND A3 CERTIFICATE - TOKEN
Can anyone here use A3 type certificate for a WEBAPI ? Because when I test it in debug (i.e., local), everything works normal. But if I compile, and put in the IIS application, keeps returning me…
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4
votes2
answers3654
viewsHow to obtain the CPF/CNPJ number of a digital certificate type e-CPF/e-CNPJ on A1 and A3 models?
I am developing an alternative method to login via certificate, without needing java or a specific language, only http and php to process backend information (but that could be manipulated by any…
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4
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answer644
viewsHTTP Error 403.7 Forbidden - SEFAZ RS
I’m trying to access the address RS electronic invoice authorization. When accessing I receive the following message: Server Error in Application "PRNFH/WS/NFEAUTHORIZATION" HTTP Error 403.7 -…
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4
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answer42
viewsCan Let’s Encrypts certify Ips?
I have a local server running some applications php, and some running in virtual environment hosts, all accessing via https, but now the company wants to make the intranet via ip available for…
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4
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answer406
viewsSelf-signed Certificate Security ( Self-signed Certificate)
I am making a Java Client-Server system that will manage computers in a room, the scenario is as follows: A computer, the server, waits for connections, when an action is made ( Block Screen ) this…
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4
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answer555
viewsIs there a way to create a valid certificate for Apache localhost?
Look at my local development I have made use of https://localhost, created the certificate by apache openssl, works beauty. As it is not a certificate that is in an external source the browser says…
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3
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answer416
viewsSslstream - Certificate
1 - To make a secure communication between a client and a server, I decided to use SSL using Sslstream, from example msdn site, but the issue is that it is not a server on the web, even not being a…
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3
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answer361
viewsHow does Digital Subscription work in the Healthcare System?
For more than a month I have been doing the search on this subject but so far I found almost nothing on the subject, someone would know explain to me how it works, after acquiring an e-CPF as…
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3
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answer3030
viewsImplement digital certificate (ICP) authentication in Apache
I’m trying to implement Apache authentication through PKI with digital certificates stored in token/smart card. I am using XAMPP 5.6.8.0-VC11 on a Windows 7 computer. Following what I found by…
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3
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answer1824
viewsHow to request a digital certificate and use the public key to sign a string?
I’m developing a web site for my TCC at php, and I’m at an impasse: My application will need to request a digital certificate, which may be the file .cer or load from the user’s repository and sign…
php javascript web-application certified digital-signatureasked 7 years, 7 months ago adrianosmateus 755 -
3
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answer3835
viewsPHP Digital Signature
I am trying to perform the digital signature of a PHP document through A1 certificate. $pdf = new \FPDI(); $pdf_path = $_SERVER["DOCUMENT_ROOT"] . "\\files\\" . md5(uniqid("")) . ".pdf";…
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3
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answers47
viewsStrange expressions in PHP
Someone explains why this: <?php $world = _("World"); $str = <<<EOF <p>Hello</p> <p>$world</p> EOF; echo $str; ?> generates this: Hello World error-free? what…
php characteristic-language encoding-style syntax certifiedasked 6 years, 4 months ago Julio Henrique 4,352 -
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votes2
answers1248
viewsC# XML digital signature, poorly formed Reference element
I have a code c# that generates a xml with digital signature, but when calling the function signedXml.ComputeSignature() it shows the following error: Badly formed Reference element. However, I…
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3
votes1
answer276
viewsInvalid Date and Time on signature using A3 digital certificate in C#
I’m having trouble getting the day and time to digitally sign a PDF document to P7S. I followed the documentation: https://msdn.microsoft.com/pt-br/library/ms148432(v=vs.110). aspx There are also…
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3
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answers493
viewsDigital signature with C# and Json
Good afternoon to you all. I’m using the link code https://github.com/Gread/BoletoOnlineBradesco that uses C# to sign Json and send the letters to Bradesco. My problem is occurring in Bouncy…
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2
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answers762
viewsHow to Add SSL Free in Azure? Is it Possible?
In Azure: I have an Azure account where I created a new Site. To add an SSL Certificate (Https) I had to change the hosting plan from "Free" to "Basic" (in the Scale menu). Then I opened the option…
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2
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answer313
viewsCertified problems using GIT in https
The GIT repositories I’m accessing are now only available in HTTPS. However when I try to access the repository, I get the following error: git -c diff.mnemonicprefix=false -c core.quotepath=false…
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2
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answers831
viewsHow do I digitally sign a . pem file using the SHA256 algorithm
I have a. pem file converted from a A3(.pfx) digital certificate I need to sign 2 Cnpjs concatenated using this file. pem, which contains 2 Keys 1 Public and another Private, I need to use the…
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2
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answer3519
viewsHow do I show and select one of the digital certificates on my computer
In my desktop I have some certificates and I need to select one of them, I would like to know via VN.Net or C# code how to appear a list and I choose the digital certificate I need, without having…
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2
votes0
answers239
viewsHow to open Certificate Store and select certificate with Java?
I would like to know how it is possible to open the Windows Certification store and select the certificate to be used using the Java language. Using CAPICOM and even the C# classes X509 the result…
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2
votes0
answers277
viewsUse of two different certificates for nfse abrasf issuance
I am sending notes to abrasf using the code below to load keystrore certificate information and tals. Only when sending with a certificate and then with another from another taxpayer refuses to…
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2
votes2
answers658
viewsCan I generate a certificate for an IOS app without an Apple device?
I am developing an app via phonegap and would like to generate for IOS too, only I need a certificate, and so I saw this certificate has to be generated by a Mac. Is there any other way to generate…
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2
votes0
answers458
viewsConfigure jboss to request digital customer certificate
I am making a web application using jboss EAP 6.1. As one of the requirements, the system must perform user authentication via digital certificate. For this I have properly configured jboss to run…