Questions tagged as 'openssl'

Tagged questions
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OpenSSL and ASP.NET WebAPI

I'm developing an internal application, but in a certain module I'll need to traffic some sensitive data. A priori I thought about using SSL, but due to limitations ( non-technical ) I would not be able to do so, so I thought about using Open...
asked by 31.05.2016 / 13:56
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How to generate a pdf file containing the digital certificate information? [closed]

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 documentation, and I've seen that the FPDF that I'm using does not yet support this method, since TCPDF give...
asked by 13.05.2015 / 03:29
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Should I take any action on Heartbleed?

As a developer, do I have to take any action on Heartbleed ? Being a problem in OpenSSL, I believe it is more of the scope of webmasters, server administrators, etc. But I'm not sure if it's just that (updating OpenSSL and swapping all the cert...
asked by 10.04.2014 / 02:03
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Use Command Line with C #

In my work I use the Command Line, and wanted to improve the work in my company. To do this, I thought about creating a C # program for people who do not know how to work with the command line. I thought of putting a button to open a CNF fi...
asked by 17.04.2015 / 17:52
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How does an e-CPF work?

I do not have a Card or Token, but I would like to know how it works, as I should use it in the future to generate Certified / Digitally Signed Medical Records. I have some questions:    - Does it contain a set of public and private keys o...
asked by 15.04.2015 / 19:50
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What is Initialization Vector?

When I used a function in PHP, called openssl_encrypt , which encrypts data, I came across the term iv , which is Initialization Vector . I'd like to understand a little bit about this; I saw this in an example like this: $i...
asked by 22.02.2017 / 19:24
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Maximum memory consumption in linux bash using openssl with aes

#!/bin/sh SUM = 0 for i in {1..5} do t=$((/ usr / bin / time-f '% e' openssl enc -aes-128-ecb -K 1234567890 -in t -out g 1> /dev/null) 2> &1) SUM = 'bc <<<" $ SUM + $ t "' done res = bc <<< "scale = 4; $ SUM / 5" echo...
asked by 27.04.2018 / 15:30
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What does '% 02x' do exactly?

I was seeing some examples of hash functions > from OpenSSL and I came across the format specifier / a> %02x . I do not know very well their purpose we codes that I saw. I even understand that %02x is to fill the field with ze...
asked by 08.07.2018 / 21:07
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How do I use the OpenSSL functions in VB.Net?

Is there a DLL that I can use the OpenSSL functions, to work with signatures, PEM, etc.? How to work with it?     
asked by 28.10.2014 / 18:49
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What does this error mean after calling the openssl_encrypt function?

When calling the function openssl_encrypt , it is always returned false. When I check the openssl_error_string function, I get the following error:    error: 0906D06C: PEM routines: PEM_read_bio: no start line The code I'm te...
asked by 22.02.2017 / 18:33