OpenSSL: The Open Source Toolkit for SSL and TLS

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Apache and ECC Curve Order

I have Ubuntu 15.04 with Apache 2.4.10 (OpenSSL 1.0.1f) and I would like to configure Apache SSL.conf specifically for "ECC Curve Order" as on Windows 10, where I select the preferred order of ...
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6 views

openssl smime message signing: why do I need a -certfile key?

Here is how one should sign a message with openssl smime? according to the docs openssl smime -sign -in in.txt -text -out mail.msg -signer mycert.pem \ -inkey mykey.pem -certfile mycerts.pem But ...
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Install self-signed SSL certificate correctly (for use in Node.js)

I've been trying to create a self-signed certificate, use it in a simple Node.js server, and install it into the system to the system trusted. However, something is not working, the 'SSL certificate ...
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OpenSSL listen and decrypt automatically

I want to design an application to connect my server using OpenSSL and send encrypted data (encrypted with server public key) to specified port on server like 4433. All client using server public key ...
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37 views

Not able to GET resource using openssl s_client

I tried following command openssl s_client -connect google.com:443 and was able to connect with google.com over SSL. But when I tried to get some resource using GET /?q=cats HTTP/1.1 <enter> ...
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194 views

Why can't I connect to this site via HTTPS?

Ever since I upgraded to Windows 10, there is a single site I visit that I simply can't connect to. Other people I've talked to don't have this issue. I can access it fine from my phone while on the ...
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13 views

Test authentication credentials in imaps without manual typing

In terminal I call: openssl s_client -crlf -connect outlook.office365.com:993 Then I get nice prompt: * OK The Microsoft Exchange IMAP4 service is ready. And then I can simply type: a login ...
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26 views

Convert CA.cer to pfx

I have CA.cer. I need to convert it to .pfx. I was messing around with openssl tool but nothing worked. What are the exact steps I need to do in order to convert my CA.cert to .pfx?
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92 views

openssl “unable to find 'distinguished_name' in config”

I get the following error from openssl req: unable to find 'distinguished_name' in config problems making Certificate Request 41035:error:0E06D06C:configuration file routines:NCONF_get_string:no ...
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36 views

unable to create cms signed message

So I'm trying to create a CMS signed message with OpenSSL and am having some difficulty. Here's what the OpenSSL docs say: Create a cleartext signed message: openssl cms -sign -in message.txt -text ...
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41 views

What is the difference between openssl pkeyutl -sign and openssl rsautl -sign

What is the difference between openssl pkeyutl -sign -pkeyopt digest:sha256 and openssl rsautl -sign ? Do they do the same thing?
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How to extract the Subject Alternative Name from a CSR by just using the openssl command?

I would need to extract the Subject Alternative Name from a CSR. Is there any way I can extract this other than using the "-text" in openssl req -in test.csr -text -noout? (Maybe similar with the ...
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84 views

Install Tomcat SSL cert in CUCM signed by CA created through openssl

My problem looks like this. I want to install a Tomcat certificate in CUCM signed by CA created by me which exists in my ubuntu operating system.This is what I thought the steps should be: Generate ...
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1answer
12 views

Changing the signature on a cert or creating a key file from an existing cert

I would like to create a certificate with a specific public key. I have another certificate which contains the public key I need to use, and I wish to change the signature on that certificate to a ...
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46 views

Enforcing RC4 cipher and testing enabled ciphers with OpenSSL

I am trying to enable and enforce the RC4 cipher on Apache 2.4. I checked the Apache SSL HOWTO. It says the RC4 cipher can be enabled in the two ways below: SSLCipherSuite ...
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1answer
191 views

Thunderbird: Error: imap.server.com : server does not support RFC 5746, see CVE-2009-3555

I'm getting this error when checking my mail, and I can't download my mail. I recently updated Thundirbird yesterday, but it restarted and was working fine for many hours. I saw this question: How to ...
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1answer
73 views

Why does not ECDHE-ECDSA work?

I am now using this ciphersuite: ...
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33 views

Windows can't find the issuer of a client certificate

Hello and sorry about my bad english. I have a problem about a PKI which I did on Ubuntu using OpenSSL: when I installed the root certificate on Windows (it's a simple hierarchy: ROOT -> Intermediate ...
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35 views

X509 extensions in openssl

With "openssl" I want to sign a "csr" including several X509.v3 extensions. I do not known how to configure the following three ones: a) "X509v3 Private Key Usage Period", "not before/after than". ...
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34 views

Automated script to create/access an encrypted file with multiple recipients

My goal is to create an automated way of encrypting/decrypting some files using openssl. What I currently have are the public keys of the recipients (in PEM format) and the actual data I need to ...
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SSL issue: The private key did not match the public key provided

I followed the instructions outlined here by amazon. A quick summary: Created a private key openssl genrsa -out my-private-key.pem 2048 Created a CSRopenssl req -sha256 -new -key ...
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Client not connecting to port running openssl s_server

Question Context: I want to test a TLS handshake and see all the output (for learning/work related purposes) between my local computer (running OSX Yosemite) and a remote work server (running amazon ...
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97 views

Creating PEM public key for Google App Engine

I am running a small company and unfortunately my IT support just quit. I am running a site on GAE. My SSL expired and I ordered a new one, receiving the following files: 3 .cer files in an SHA-1 ...
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54 views

Mumble-Ruby openssl error when running scripts

First things first here are the instructions I am working off and system details: http://wiki.natenom.com/w/Mumble-Ruby_installation and this is for SuperBot a mumble ruby plugin. This is running ...
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687 views

What is NSS error -5961 (PR_CONNECT_RESET_ERROR)

Can someone enlighten me the meaning of "NSS error -5961 (PR_CONNECT_RESET_ERROR)"? I am trying to connect to bitbucket.org with "https" protocol but got a refuse from the server. Then, I try to use ...
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OpenSSL failing to read combined key and certificate from /dev/stdin

I have a private key and a certificate, both in PEM format. I want to create a p12 file out of them This works: openssl pkcs12 -export -in operator.crt -inkey operator.key -out test.p12 -password ...
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Stunnel can't open web page

I am using stunnel with following configuration on my mac. It is Yosemite. output = stunnel.log options = NO_SSLv2 accept = 443 connect = 80 [gmail-pop3] client = yes accept = 127.0.0.1:110 ...
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113 views

Activate PHP OpenSSL module on Mac Yosemite

I've got a new MacBook Pro (with latest Yosemite) I'm setting up for web development. I am running PHPStorm as my IDE. PHPStorm cannot use its built-in composer functionality, saying it cannot connect ...
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114 views

How to force a server to use a specific elliptic curve at the beginning of the handshake via openssl?

Is there a possibility or command in openssl to force a server to use a specific elliptic curve that I am requesting with a certificate or key? Can I "ask" the process the curves it is able to use?
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How to RC4 decryption in command line when encrypting using C program

I used the code Decrypt RC4 in Linux (by mr.spuratic) to encrypt a file. How is it possible to decrypt it using openssl command? for example- openssl enc -d -rc4 -in rc4.txt -out plain.txt -K ...
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OpenSSL: Display DH Parameters

When using SSL Ciphers relying on a diffie hellman key exchange, the size of the private key employed is of crucial importance for the security of that key exchange. When I connect to a server using ...
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288 views

PuTTY Key Generator says “Couldn't load private key (not a private key)” when loading a PEM file

I have a certificate ("gridcert.p12") in PKCS12 format that I'm trying to convert to a keypair that I can use in PuTTY. I'm using OpenSSL to convert the PKCS12 file to a pair of PEM files, one for a ...
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91 views

Why can't I verify this certificate chain?

I have three certificates in a chain: root.pem intermediate.pem john.pem When I examine them using openssl x509 -in [filename] -text -noout they look fine, root.pem looks like it is self-signed ...
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39 views

UTF8 and T61 strings, how do I see what my SSL cert uses?

How do I use the openssl x509 tool to see whether or not my strings are T61 or UTF8 encoded in the cert? Is there a better way?
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get x and y components of ec public key using openssl

I am generating a KeyPair for ECC from curve 'secp128r1' using openssl Steps I followed : first I generated a private key using the command openssl ecparam -genkey -name secp128r1 -noout -out ...
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3answers
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OpenSSL 0.9.8zc -> 0.9.8zd “broke” my certificates.

I have a self-signed certificate (and CA) created on a Mac using OpenSSL 0.9.8zc. I use the certificate to secure connection to my svn server. With the latest OS X update, OpenSSL was updated to ...
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Homebrew OpenSSL: rehash failed to verify, something is wrong

Reposted from StackOverflow Just noticed 'You have mail' in shell prompt. Here is what is says: $ mail Mail version 8.1 6/6/93. Type ? for help. "/var/mail/pain": 1 message 1 new >N 1 ...
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284 views

OpenSSL Error: Error loading extension section server

The system is Fedora fc21. The objective is to run the examples shown here: “APACHE web server and SSL authentication” The openssl.cnf file has been created and the following command run: openssl ...
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101 views

SSL not available when attempting to compile“wget” from source?

I was trying to install wget from source in Linux by: ./configure --with-ssl=openssl But it returns me: configure: error: --with-ssl=openssl was given, but SSL is not available. If I do: ...
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openssl print numeric value of the key?

Given a file contains the public key, I need to get the numeric value of the modulus and the e. But I can only get something like this: $ openssl rsa -in key -pubin -text Modulus (2050 bit): ...
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Public armored key for OpenPGP from .pfx file?

With OpenSSL I can generate a public key file from a .pfx file as follows: openssl pkcs12 -in cert.pfx -clcerts -nokeys -out pubcert.pem openssl x509 -pubkey -in pubcert.pem -noout > pubkey.pem ...
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OpenSSL s_client and putting binary data

I'm creating application with half-binary and half-textual protocol. Because I'm not writing client application yet, I decided to use openssl s_client to test protocol. I don't know how to pass binary ...
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openSSL: How to specify the signature hash algorithms I will accept?

Using openSSL, on a TLS client, I specified a unique cipher suite with SSL_CTX_set_cipher_list(). When I use wireshark to look at the messages, I see in the Client Hello message, the cipher suites ...
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3DES_CMAC encryption using online tools or OpenSSL

I have a smart card that claims that its mutual authentication is based on 3DES_CMAC algorithm. In the first step, the user sends a random number to the card and the card calculate the encrypted ...
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148 views

Imported CA certificate to Firefox Browser not working

I created Certificate Authority (CA) according to Ubuntu help using openssl. After creating a certificate for Apache2 and adding to certificate to it, I want to import it in Firefox. In the end of ...
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SSLCipherSuite settings in Apache for supporting TLS 1.0, 1.1 and 1.2

I have an Apache 2.4.7 web server running multiple domain names using a single IP address. As a result of the Poodle vulnerability, I added the following SSLCipherSuite line. It worked fine for a ...
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188 views

Using OpenSSL to generate encryption key for Outlook users

A private web application needs to receive encrypted email from perhaps 20 known users. How can I use OpenSSL to generate a valid encryption certificate that Outlook users can import and use to ...
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507 views

Beaglebone Black OpenSSl crypto acceleration

I'm running Debian Wheezy at my Beaglebone Black. Is OpenSSL using the hardware crypto accelerator by default? If no, how can I enable it?
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Patch Heartbleed Vulnerability on Oracle Enterprise Linux 6.5

After running an application scan on a webapp hosted on Oracle Enterprise Linux 6.5, the scan reported that the app was vulnerable to Heartbleed. I am having a tough time updating OpenSSL on OEL 6.5. ...
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8k views

Disabling RC4 in the SSL cipher suite of an Apache server

I'm trying to disable RC4 for an Apache 2.2.29 server running on a CentOS 6.5 VPS and I can't seem to succeed. A recently purchased business-validated certificate is installed and SSL connections are ...