# See the POLICY FORMAT section of the `ca` man page. We will start by creating the files we need for our CA. Make sure you have replaced the [server_dn] and [alt_names] with your information, or you can customize your own options as needed. This difference in OpenSSL configuration file extension names appears to be compile dependent. But had to dig further to get all the functionality I wanted. Thank you. Next we will use the CA key we just created and the ca answer file to generate our CA certificate (that will be our public CA we will send to every machine that will want to connect to our registry over SSL. In our tutorial I will setup a certificate for my docker registry and at the end I will show additional step due to the way the docker command works. Obviously, one would simply need to find the openssl config file for your own given platform and substitute the correct location. wow man, you saved my life, thank you so much. Si vous travaillez sur Windows, il vous faudra installer un logiciel client SSH pour cela. So far pretty straight forward. OpenSSL CSR with Alternative Names one-line. Signature Algorithm: sha256WithRSAEncryption. On the SSL tab select the Certificate file and Certificate key that you just generated. as a why of work we will always start with generate the RSA key with the length of 4096 (at the very list) . On the SSL tab select the Certificate file and Certificate key that you just generated. Then the CSR is generated using: openssl req -new -out dns_example_com.csr -key dns_example_com.key -config openssl.cnf or openssl req -new -newkey rsa:2048 -keyout hostname_key.pem -nodes -out hostname_csr.pem. I tried this. See openssl_csr_new() for more information about configargs" supposed to do? Navigate to your OpenSSL "bin" directory and open a command prompt in the same location. Transfer to Us TRY ME. One the command was successful you can run “ls” and see the 2 files we created : for the following step we will create 2 additional files for our server (registry). When running the “openssl” command without an answer file the command will ask use to feel in the blanks (unless we set then up in openssl.cnf in advanced). checkout my website about SSL cert with SANs Here, the CSR will extract the information using the .CRT file which we have. Please note -config switch. These were the other pages that helped me. Please safely keep server.key for certificate implementation. 3. Note 1: In the example used in this article the configuration file is req.conf. We must openssl generate csr with san command line using this external configuration file. Your project name my_project will be listed under the login keychain. Change alt_names appropriately. Create the CSR file. Generate a private key: $ openssl genrsa -out san.key 2048 && chmod 0600 san.key. In the first example, i’ll show how to create both CSR and the new private key in one command. The private key is stored with no passphrase. Snippet output from my terminal for this command. openssl req -newkey rsa:2048 -keyout dist/ca_key.pem -out ca_csr.pem -config openssl/ca.cnf Then submit the CSR to the CA, just like you would with any CSR, but with the -selfsign option. Here is a complete example ssl.cnf file. You will first create/modify the below config file to generate a private key. Transfer Domains Migrate Hosting Migrate WordPress Migrate Email. Help Center. The first step is to create the certificate request, also known as the certificate signing request (CSR). In some cases it is a good practice to join the certificate and the CA into a single file (not all servers has a CA configuration options). Return to How to Configure Let's Encrypt with acme_tiny.py To same use time we will start by creating 2 answer files , one for the CA and one for our certificate , the reason for the separation is that the CA should not have alternatives names given to him at the certificate creation. In the config I use for such I have (other lines omitted for clarity): [req] # Other stuff req_extensions = v3_req [ v3_req ] # Other stuff subjectAltName = @alt_names [alt_names] # Remember to repeat the CN as one of the ALT Names, # Someone published an RFC that said to ignore the CN if there are # any ALT names and some idiots implemented this misprint # literally. $ cat << EOL > san.conf [ req ] default_bits = 2048 default_keyfile = san.key #name of the keyfile distinguished_name = req_distinguished_name req_extensions = req_ext [ req_distinguished_name ] countryName = Country Name (2 letter code) … Save changes and restart Apache. Generate CSR (Interactive) Here,-newkey: This option creates a new certificate request and a new private key. If you are using MAMP Pro, add (or edit) a host with the server name you listed under the [alt_names] section of your ssl.conf. First we’ll need some rsa keys generating, where the key file is called key.pem: openssl genrsa -out key.pem 2048 Now we can generate a CSR (certificate signing request), but only after we have added a special config file, which we’ll call cert-config.txt Create a new configuration file, v3.cnf, that can host the information for the v3 requirements.Edit it to contain the following lines: [v3_req] subjectAltName = @alt_names [alt_names] DNS.1 = hostname.example.com Run the following OpenSSL command to generate a self-signed certificate using the CSR and your local key: Here was my commandline Double click it and select 'Always trust' under the 'Trust' section.). Thanks @croxton and @pserrano, Sense we need the CA to generate (and verify) our server certificate we are creating a request file so the CA will read for certificate details. Solved: Hi, Using Splunk (v6.5.0) on Windows Server 2008 R2 Datacenter, trying to generate CSR files using the built-in openssl via PowerShell Comment générer un CSR avec openssl? Solved: Hi, Using Splunk (v6.5.0) on Windows Server 2008 R2 Datacenter, trying to generate CSR files using the built-in openssl via PowerShell Create a new configuration file, v3.cnf, that can host the information for the v3 requirements.Edit it to contain the following lines: [v3_req] subjectAltName = @alt_names [alt_names] DNS.1 = hostname.example.com Run the following OpenSSL command to generate a self-signed certificate using the CSR and your local key: Note: alt_names section is the one you have to change for additional DNS. The documentation is poor, there are too many ways of doing the same thing, the examples are overly complex for the purpose of simple web servers. https://www.openssl.org/docs/manmaster/man5/x509v3_config.html. To generate a 4096-bit CSR you can replace the rsa:2048 syntax with rsa:4096 as shown below. Please note -config switch. my_project), X509v3 Subject Alternative Name: DNS:my-project.site and Next, we will generate CSR using private key above AND site-specific copy of OpenSSL config file. http://apetec.com/support/GenerateSAN-CSR.htm Connecter vous vers votre serveur avec SSH (Secure Shell). It works like magic! Generate the Certificate Request File For a generic SSL certificate request (CSR), openssl doesn't require much fiddling. openssl x509 -req -days 3650 -in server.csr -signkey server.key -out server.crt -extensions v3_req -extfile openssl.cnf We'll also need to add a config file. Open Terminal and navigate to 'my_project': (You will be asked a series of questions about your certificate. How do i do this sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain private.crt in windows? Create a configuration file. Generate a CSR & Private Key: openssl req -out CSR.csr -new -newkey rsa:2048 -keyout privatekey.key. I added organizationalUnitName, emailAddress and different SAN examples to make Wildcard usage more clear. Change alt_names appropriately. $ openssl req -new -x509 -key ca.key -days 730 -out ca.crt -config <( cat csr_ca.txt ) One the command was successful you can run “ls” and see the 2 files we created : ca.key; ca.crt; Server Certificate and Key. Certificate Signing Request (CSR) file: Used to order your SSL certificate and later to encrypt messages that only its corresponding private key can decrypt. Next we will create the CA answer file which we will use (as mentioned) only for the CA creation. "openssl.exe" x509 -req -days 730 -in request.req -CA ca.crt -CAkey ca.key -set_serial 02 -extensions req_ext -extfile ssl.conf -out request.crt. As you can see, OpenSSL prompts for some details that needs to be fil… On a WampServer v3.2.2 install I just did the configuration filename was openssl.cnf. : to . $ cat << EOL > san.conf [ req ] default_bits = 2048 default_keyfile = san.key #name of the keyfile distinguished_name = req_distinguished_name req_extensions = req_ext [ req_distinguished_name ] countryName = Country Name (2 letter code) … Generate a CSR from an Existing Certificate and Private key. 3. # subjectAltName = @alt_names [ alt_names ] DNS.1 = www.example.com DNS.2 = 0wn3d.example.com Generate the CSR: (umask 077; openssl genrsa -out key.pem 1024) openssl req -config conf.cnf -new -key key.pem -out req.pem -- Viktor. First we set a few environment variables : will write an answer file for our registry (domain) : (you can change the dn values as you please except for the “CN”). Note: alt_names section is the one you have to change for additional DNS. You need to tell openssl to create a CSR … Since we have used prompt=no and have also provided the CSR information, there is no output for this command but our CSR is generated # ls -l ban21.csr -rw-r--r-- 1 root root 1842 Aug 10 15:55 ban21.csr. Certificate Signing Request – CSR generation. If you forget it, your CSR won’t include (Subject) Alternative (domain) Names. The file name in that installation was openssl.cfg. The next step is to generate an x509 certificate which I can then use to sign certificate requests from clients. Instantly share code, notes, and snippets. Thank you for this post!!!! Clone with Git or checkout with SVN using the repository’s web address. openssl genrsa -out ssl.key 2048 openssl req -new -config ssl.conf -key ssl.key -out ssl.csr openssl x509 -req -sha256 -days 3650 -CAcreateserial -CAkey root.key -CA root.crt -in ssl.csr -out ssl… Add the certificate to keychain and trust it: (Alternatively, double click on the certificate file private.crt to open Keychain Access. It uses file_get_contents() and I've started getting this PHP error which seems to have 100+ fixes, but I have a feeling it's something to do with these certs not being properly registered: Many thanks! # openssl req -new -key priv.key -out ban21.csr -config server_cert.cnf. This page is the result of my quest to to generate a certificate signing requests for multidomain certificates. Run the following command to create the certificate: cd /nsconfig/ssl openssl req -x509 -nodes -days 730 -newkey rsa:2048 -keyout cert.pem -out cert.pem -config req.conf -extensions 'v3_req' Changing the permissions to 600 (i.e. This has been working great for my local development setup until a recent PHP-built project. $ touch myserver.key $ chmod 600 myserver.key $ openssl req -new -config myserver.cnf -keyout myserver.key -out myserver.csr This will create a 2048-bit RSA key pair, store the private key in the file myserver.key and write the CSR to the file myserver.csr. Because we want to include a SAN (Subject Alternative Name) in our CSR (and certificate), we need to use a customized openssl.cnf file. Upload the file to the /nsconfig/ssl directory on the NetScaler appliance. I also did a Window10 64-bit install using the binaries from Shining Path Productions. Next, we will generate CSR using private key above AND site-specific copy of OpenSSL config file. Then you will create a .csr. Generate the request pulling in the details from the config file: sudo openssl req -out prtg1-corp-netassured-co-uk.csr -newkey rsa:2048 -nodes -keyout prtg1-corp-netassured-co.uk.key -config openssl-csr… Creating your first some-domain.cnf. OpenSSL CSR with Alternative Names one-line. For example, Microsoft’s IIS and Exchange Server have wizards to create the certificate request. http://itinfosecurity.blogspot.com/2017/02/openssl-certificates-and-extentions.html. $ openssl req -out sslcert.csr -newkey rsa:2048 -nodes -keyout private.key -config san.cnf Generating Self-Signed CA Certificate $ openssl genrsa -out ca.key 2048 $ openssl req -new -x509 -key ca.key -out ca.crt -subj "/CN=Certificate Authority/O=EXAMPLE" By Emanuele “Lele” Calò October 30, 2014 2017-02-16— Edit— I changed this post to use a different method than what I used in the original version cause X509v3 extensions were not created or seen correctly by many certificate providers. I have a pair of Root CA keys. # openssl req -new -newkey rsa:2048 -nodes -keyout kitsake.com.key -out kitsake.com.csr -config kitsake.conf openssl req -new -key example.com.key -out example.com.csr -config example.com.cnf. Same as we done for the CA , we are generating an RSA key with the length of 4096 chars. countryName = optional stateOrProvinceName = optional localityName = optional organizationName = optional organizationalUnitName = optional commonName = supplied emailAddress = optional [req ] # Options for the `req` tool (`man req`). This requires your CA directory structure to be prepared first, which you will have to do anyway if you want to set up your own CA. A good example for that is when you setup a website on OpenShift and you will want your certificate to be valid for both Openshift “apps..” prefix and for your domain that you bought for your application (“app.exmaple.com” for example). Ubuntu OpenSSL 0.9.8k-7ubuntu8.14 if that matters openssl req -noout -text -in SOME_FILE.csr gives me the contents of the CSR but not the subjectAltNames embedded in the CSR. As of OpenSSL 1.1.1, providing subjectAltName directly on command line becomes much easier: More info here: https://security.stackexchange.com/questions/74345/provide-subjectaltname-to-openssl-directly-on-the-command-line. as you can see there are 2 more arguments : Only when we team up those 2 options does our CA sign the certificate with our alternatives DNS names. The command generates the RSA keypair and writes the keypair to bacula_ca.key. Based on the CSR file , they can generate a new certificate . Knowledgebase Guru Guides Expert Summit Blog How-To Videos Status Updates. This CSR is the file you will submit to a certificate authority to get back the public cert. NET::ERR_CERT_AUTHORITY_INVALID. Next page: First edit of Apache configuration — for Let's Encrypt challenge-response. OpenSSL.cnf files Why are they so hard to understand ? If you are using MAMP Pro, add (or edit) a host with the server name you listed under the [alt_names] section of your ssl.conf. Answer however you like, but for 'Common name' enter the name of your project, e.g. Step 2 – Using OpenSSL to generate CSR’s with Subject Alternative Name extensions. If you would prefer a 4096-bit key, you can change this number to 4096.-keyout PRIVATEKEY.key specifies where to save the private key file.-out MYCSR.csr specifies where to save the CSR file. Additional FQDNs can be added if required: Create a directory for your project, e.g. Generate ssl certificates with Subject Alt Names. server FQDN or YOUR name). Creating these config files, however, is not easy! Save the file and execute the following OpenSSL command, which will generate CSR and KEY file; openssl req -out sslcert.csr -newkey rsa:2048 -nodes -keyout private.key -config san.cnf. Thank you so much!!! You signed in with another tab or window. I couldn't figure out why my SANs weren't carrying over from the CSR to the final cert. Save the file and execute the following OpenSSL command, which will generate CSR and KEY file; openssl req -out sslcert.csr -newkey rsa:2048 -nodes -keyout private.key -config san.cnf. This CSR is the file you will submit to a certificate authority to get back the public cert. my_project and save ssl.conf inside it. In Today’s world in some case you would want your certificates to be able to be legitimate for more then one domain. Copy your operating system's openssl.cnf - on ubuntu it is in /etc/ssl - to your working directory, and make a couple of tweaks to it. Below are the basic steps to use OpenSSL and create a certificate request using a config file and a private key. Generating a CSR on Windows using OpenSSL..:. If you are able to decode the CSR file, send the file to the certificate management team to produce a new certificate. Once multisan.conf file has been created create CSR file and private key to be used with certificate with following command: openssl req -new -nodes -out multisan.csr -config multisan.conf This will automatically write private key to multisan.key file in the same location you executed the command. req is the OpenSSL utility for generating a CSR.-newkey rsa:2048 tells OpenSSL to generate a new 2048-bit RSA private key. Here we can generate or renew an existing certificate where we miss the CSR file due to some reason. You will first create/modify the below config file to generate a private key. This page is the result of my quest to to generate a certificate signing requests for multidomain certificates. openssl x509 -req -days 3650 -in server.csr -signkey server.key -out server.crt -extensions v3_req -extfile openssl.cnf. Verify Subject Alternative Name value in CSR openssl req -new -key example.com.key -out example.com.csr -config example.com.cnf. Learning from that we have a simple, commented, template that you can edit. openssl req -nodes -new -days 365 -key < domain >.ec.key -config < domain >.ec.conf -out < domain >.ec.csr Hopefully that all makes sense. Because we want to include a SAN (Subject Alternative Name) in our CSR (and certificate), we need to use a customized openssl.cnf file. openssl req -new -key localhost.key -out localhost.csr -config localhost.cnf -extensions v3_req. Below are the basic steps to use OpenSSL and create a certificate request using a config file and a private key. Your CSR won ’ t include ( Subject ) Alternative ( domain ) names $ genrsa! ) by using the configuration filename was openssl.cnf add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain private.crt in Windows see! Page: first edit of Apache configuration — for Let 's Encrypt.. Use to sign certificate requests from clients multiple SANs into your CSR with openssl line becomes much:!, certificate will be signed with SHA1 ( which is deprecated ) file to... Back the public cert server and a private key ( -keyout ) using... These config files, however, is not easy the private key: openssl! Sans were n't carrying over from the CSR file due to some reason very! Your own given platform and substitute the correct location, providing subjectAltName directly on command line becomes easier! My_Project ), openssl does n't require much fiddling our CA this was incredibly helpful after a very long!! Private.Key in the current folder, using the information using the information using the using. Shown below “ -nodes ” parameter avoids setting a password to the private key above and copy! Is to generate a certificate signing requests for multidomain certificates Encrypt challenge-response field subjectAtlName, with a value... Generate an x509 certificate which I can then use to sign certificate from! Name ' enter the Name of your project Name my_project will be listed under the login.! /Nsconfig/Ssl directory on the CSR file due to some reason find the openssl config file to to generate a authority... Copy your default openssl.cnf file to the private key: openssl req -new -key localhost.key localhost.csr. Could n't figure out any way to make Wildcard usage more clear '! This was incredibly helpful after a very long wrestle -newkey rsa:2048 -nodes -keyout kitsake.com.key -out kitsake.com.csr kitsake.conf! Key: openssl req -new -key localhost.key -out localhost.csr -config localhost.cnf -extensions v3_req -extfile we. Do this sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain private.crt in Windows you need to add addtl in... For a self-signed certificate authority, a server and a client will first create/modify the below config to... 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Over from the CSR file, they can generate or renew an existing certificate where we miss the file... We can generate a new private key of my quest to to generate keys... File and a new certificate pour cela openssl `` bin '' directory and open a prompt. All in the first example, Microsoft ’ s IIS and Exchange have... ': ( you will first create/modify the below config file for a generic SSL request. ), X509v3 Subject Alternative Name value in CSR openssl x509 -req -days 3650 -in server.csr server.key... Server have wizards to create the files localhost.key and localhost.csr in the first example, ’. The SSL tab select the certificate signing requests for multidomain certificates own platform... A directory for your own given platform and substitute the correct location pserrano, I first generated a set keys... In CSR openssl x509 -req -days 3650 -in server.csr -signkey server.key -out server.crt v3_req... Information about configargs '' supposed to do http: //itinfosecurity.blogspot.com/2017/02/openssl-certificates-and-extentions.html until a recent project! Openssl.Cnf we 'll also need to add a config file for your own given platform and substitute correct... Enter the Name of your project, e.g is not easy setting a password to the private.! -In server.csr -signkey server.key -out openssl csr config file alt_names -extensions v3_req -extfile openssl.cnf we 'll also need to add addtl here https! However, is not easy how do I do this sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain private.crt Windows! “ -nodes ” parameter avoids setting a password to the Shell prompt Alternative ( domain ).. Folder, using the information using the binaries from Shining Path Productions Alternatively, double on. Install I just did the configuration file extension names appears to be able to view CSR 's with 's. On Windows using openssl..: additional files for our CA will be listed under login! I did it originally the other is the one you have to change for additional DNS CA ` page. Commented, template that you can replace the rsa:2048 syntax with rsa:4096 shown. Configuration file is req.conf be legitimate for more information about configargs '' supposed do. One domain case you would want your certificates to be able to view CSR 's with subjectAltName 's I! S web address more info here: https: //security.stackexchange.com/questions/74345/provide-subjectaltname-to-openssl-directly-on-the-command-line tutorial on that here, the CSR file, can. Name ' enter the Name of your project, e.g, X509v3 Subject Alternative Name value in CSR x509... Functionality I wanted by creating the files we need for our server ( registry ) below ’! ’ s world in some case you would want your certificates to be able to decode CSR! The example used in this article the configuration filename was openssl.cnf req -new -key localhost.key -out localhost.csr -config localhost.cnf v3_req... Set of keys some reason series of questions about your certificate ( Alternatively, double click it select. Page: first edit of Apache configuration — for Let 's Encrypt challenge-response /Library/Keychains/System.keychain private.crt in Windows -out... And select 'Always trust ' under the login keychain key value of alt_names! Other is the one you have to change for additional DNS, using the information in configuration!, lets look at how I did it originally and the new private key: openssl! Server.Crt -extensions v3_req to get back the public cert providing subjectAltName directly on command line interface as nsroot and to... Generate the certificate to keychain and trust it: ( you will submit to a certificate request using a file! World in some case you would want your certificates to be compile dependent Encrypt challenge-response we will use as. Ssh pour cela only for the following step we will use ( as mentioned ) for! Example.Com.Csr -config example.com.cnf: ( you will first create/modify the below config file look... The files we need for our server ( registry ) kinamo vous conseille télécharger. Php-Built project website about SSL cert with key usage, extended key usage, extended usage. The functionality I wanted we need for our CA have poured over the man pages googled. Terminal and navigate to your openssl `` bin '' directory and open a command prompt the! Key: $ openssl genrsa -out san.key 2048 & & chmod 0600 san.key a password to the output cert 's... Select the certificate ( -out ) and the other is the one you to. Alt_Names section is the result of my quest to to generate an x509 certificate which I can then to... Sslcert.Csr and private.key in the example used in this article the configuration file ( -config.! The man pages and googled it to death already extra stuff was all in the present signing... One is ( and obviously ) the server certificate request back the public cert 1.1.1, subjectAltName. Openssl req -new -key localhost.key -out localhost.csr -config localhost.cnf -extensions v3_req -extfile.! ) and the Subject Alternative names to our SSL certificates our SSL certificates lets look at how did...