Open Terminal and navigate to 'my_project': (You will be asked a series of questions about your certificate. Creating your first some-domain.cnf. Here's the ssl.conf I ended up with. 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. openssl req -new -key example.com.key -out example.com.csr -config example.com.cnf. Please let me know if you need any more info, i search so i'm hoping this isn't a dupe but apologies if it is. After you create the file correctly, then kitsa is ordered to make the .csr and .key files. https://www.openssl.org/docs/manmaster/man5/x509v3_config.html. It is in the directory SSLConfigs. See openssl_csr_new() for more information about configargs" supposed to do? The first step is to create the certificate request, also known as the certificate signing request (CSR). For that purpose we can apply DNS alternative names to our SSL certificates. 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. The command generates the RSA keypair and writes the keypair to bacula_ca.key. This will create sslcert.csr and private.key in the present 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. 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' Create an OpenSSL configuration file (text file) on the local computer by editing the fields to the company requirements. 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. Now we will generate the certificate request using the domain Key and the domain answer file which we created in the beginning of the this tutorial. openssl req -new -key example.com.key -out example.com.csr -config example.com.cnf. Make sure that the first DNS matches the Domain CN.You can apply the CA answer file to your domain in case you don’t need the alternative names options. as a why of work we will always start with generate the RSA key with the length of 4096 (at the very list) . Generate a CSR & Private Key: openssl req -out CSR.csr -new -newkey rsa:2048 -keyout privatekey.key. Below are the basic steps to use OpenSSL and create a certificate request using a config file and a private key. # subjectAltName = @alt_names Complete example. Here was my commandline 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 I also did a Window10 64-bit install using the binaries from Shining Path Productions. When prompted for the Common Name (domain name), type the fully qualified domain (FQDN) for the site that you are going to secure. This will create the files localhost.key and localhost.csr in the current folder, using the information in your configuration file. 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 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. This extra stuff was all in the request, but was ignored and not added to the output cert. countryName = optional stateOrProvinceName = optional localityName = optional organizationName = optional organizationalUnitName = optional commonName = supplied emailAddress = optional [req ] # Options for the `req` tool (`man req`). I want to be able to view CSR's with subjectAltName's but I can't figure out any way to make it happen. Snippet output from my terminal for this command. Here we can generate or renew an existing certificate where we miss the CSR file due to some reason. $ 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) … One is (and obviously) the Server key and the other is the server certificate request. openssl req -new -key localhost.key -out localhost.csr -config localhost.cnf -extensions v3_req. 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. For example, Microsoft’s IIS and Exchange Server have wizards to create the certificate request. In Today’s world in some case you would want your certificates to be able to be legitimate for more then one domain. 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. While you could edit the ‘openssl req’ command on-the-fly with a tool like ‘sed’ to make the necessary changes to the openssl.cnf file, I will walk through the step of manually updating the file for clarity. # openssl req -new -newkey rsa:2048 -nodes -keyout kitsake.com.key -out kitsake.com.csr -config kitsake.conf I couldn't figure out why my SANs weren't carrying over from the CSR to the final cert. NET::ERR_CERT_AUTHORITY_INVALID. OpenSSL CSR with Alternative Names one-line. Note 1: In the example used in this article the configuration file is req.conf. Next we will create the CA answer file which we will use (as mentioned) only for the CA creation. OpenSSL.cnf files Why are they so hard to understand ? Learning from that we have a simple, commented, template that you can edit. Next, we will generate CSR using private key above AND site-specific copy of OpenSSL config file. OpenSSL CSR with Alternative Names one-line. "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. Log on to NetScaler command line interface as nsroot and switch to the shell prompt. You can find an tutorial on that here, for example. This will create sslcert.csr and private.key in the present We will store this configuration file as example.cnf and then create our CSR using the following command syntax: openssl req -out .csr-new -newkey rsa:2048 -nodes -keyout .key-config ./example.cnf. [ alt_names ] DNS.1 = my.fqdn.address DNS.2 = www.my.fqdn.address DNS.3 = my DNS.4 = another.dns.address DNS.5 = another: Create the Certificate Request with the following command: OpenSSL req -new -sha256 -nodes -out MyCertificateRequest.csr -newkey rsa:2048 -keyout MyCertificate.key -config MyCertSettings.txt *Note: Copy all on one line Validate the Certficate Request file … http://apetec.com/support/GenerateSAN-CSR.htm Mostly active directory team handles this request in an enterprise organization. Edit the domain(s) listed under the [alt_names] section so that they match the local domain name you want to use for your project, e.g. Please note -config switch. If i just hit when prompted for e.g. As promise to update the registry first we will copy our ca.crt to our “anchors” directory : For the registry we will copy the file to our domain directory under “/etc/docker/cert.d/” as follow : Now all that is left is to restart the docker service and we are good to go. We must openssl generate csr with san command line using this external configuration file. The private key is stored with no passphrase. openssl req -nodes -new -days 365 -key < domain >.ec.key -config < domain >.ec.conf -out < domain >.ec.csr Hopefully that all makes sense. Generate a CSR from an Existing Certificate and Private key. 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. 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. $ 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. This CSR is the file you will submit to a certificate authority to get back the public cert. This was incredibly helpful after a very long wrestle! Create a configuration file. Thank you so much!!! Instantly share code, notes, and snippets. my_project and save ssl.conf inside it. # See the POLICY FORMAT section of the `ca` man page. To generate a 4096-bit CSR you can replace the rsa:2048 syntax with rsa:4096 as shown below. Additional FQDNs can be added if required: Create a directory for your project, e.g. Answer however you like, but for 'Common name' enter the name of your project, e.g. Create a configuration file. Create the CSR file. Step 2 – Using OpenSSL to generate CSR’s with Subject Alternative Name extensions. Change alt_names appropriately. $ openssl req -new -x509 -key ca.key -days 730 -out ca.crt -config <( cat csr_ca.txt ), $ openssl genrsa -out ${SHORT_NAME}.key 4096, $ openssl req -new -key ${SHORT_NAME}.key -out ${SHORT_NAME}.csr -config <( cat ${SHORT_NAME}_answer.txt ), $ openssl req -in ${SHORT_NAME}.csr -noout -text | grep DNS, $ openssl x509 -req -in ${SHORT_NAME}.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out ${SHORT_NAME}.crt -days 730 -extensions 'req_ext' -extfile <(cat ${SHORT_NAME}_answer.txt), $ mv ${SHORT_NAME}.crt ${SHORT_NAME}-certonly.crt, $ openssl x509 -in ${SHORT_NAME}.crt -noout -text | grep DNS, $ openssl verify -CAfile ca.crt ${SHORT_NAME}.crt, $ cp ca.crt /etc/pki/ca-trust/source/anchors/${SHORT_NAME}.crt, $ export MY_SERVER="registry.example.local", Transport Layer Topics: TCP, Multiplexing & Sockets, How To Create a Batch Processing Job On GCP Dataflow, Ways to Solve the Classic Two Sum Algorithm Question with an Explanation on Big-O, Manage Your Messy Open-Source Repository With Terminal Tools, 3 Coding Follies Your Future Self Will Wish You Avoided, extentions — section from config file with X509V3 extensions to add, extfile — configuration file with X509V3 extensions to add. We will start by creating the files we need for our CA. Then you will create a .csr. These were the other pages that helped me. If you forget it, your CSR won’t include (Subject) Alternative (domain) Names. # See the POLICY FORMAT section of the `ca` man page. Sur le serveur GNU/Linux nous allons générer : 1. une clé privée 2. une clé publique 3. une CSR (signée numérique avec la clé privée, contient aussi la clé publique) Cette CSR sera ensuite soumise à l'autorité Active Directory qui retournera le certificat multi-domaine/SAN associé (les 2 sont possibles). 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. Without that option, certificate will be signed with SHA1 (which is deprecated). Change alt_names appropriately. You will first create/modify the below config file to generate a private key. In the first example, i’ll show how to create both CSR and the new private key in one command. As you can see, OpenSSL prompts for some details that needs to be fil… 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. You signed in with another tab or window. For the article, I had to generate a keys and certificates for a self-signed certificate authority, a server and a client. # 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. Changing the permissions to 600 (i.e. 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: First, lets look at how I did it originally. Generate CSR (Interactive) Here,-newkey: This option creates a new certificate request and a new private key. Pas 1: Connectez-vous au serveur. Because we want to include a SAN (Subject Alternative Name) in our CSR (and certificate), we need to use a customized openssl.cnf file. If more SAN names are needed, add more DNS lines in the [alt_names] section. So, to set up the certificate authority, I first generated a set of keys. 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. 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. leevigraham/Generate ssl certificates with Subject Alt Names on OSX.md, https://security.stackexchange.com/questions/74345/provide-subjectaltname-to-openssl-directly-on-the-command-line, http://itinfosecurity.blogspot.com/2017/02/openssl-certificates-and-extentions.html, http://apetec.com/support/GenerateSAN-CSR.htm, https://www.openssl.org/docs/manmaster/man5/x509v3_config.html, distinguished_name = req_distinguished_name, countryName = Country Name (2 letter code), stateOrProvinceName = State or Province Name (full name), localityName = Locality Name (eg, city), organizationName = Organization Name (eg, company), organizationName_default = Hallmarkdesign, commonName = Common Name (e.g. I added organizationalUnitName, emailAddress and different SAN examples to make Wildcard usage more clear. for the following step we will create 2 additional files for our server (registry). Next under [alt_names], I will provide the complete list of IP Address and DNS name which the server certificate should resolve when validating a client request. Verify CSR 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. Feel free to change the DN and the DNS values as you see fit. This CSR is the file you will submit to a certificate authority to get back the public cert. Extract information from the CSR/CRT openssl req -in self-ssl.csr -text -noout openssl x509 -in self-ssl.crt -text -noout Trsuted CA or CRT 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. Please note -config switch. Explanation of the command line options:-new – generate a new CSR This difference in OpenSSL configuration file extension names appears to be compile dependent. Your project name my_project will be listed under the login keychain. Below are the basic steps to use OpenSSL and create a certificate request using a config file and a private key. Now all that is left to do is to test our certificate : And if we want to make sure the ca.crt is the signer of the certificate we can test it with the “verify” arguments: If your output is the same as the example you done everything right!! my_project), X509v3 Subject Alternative Name: DNS:my-project.site and Obviously, one would simply need to find the openssl config file for your own given platform and substitute the correct location. Transfer to Us TRY ME. Verify Subject Alternative Name value in CSR 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. Generate the Certificate Request File For a generic SSL certificate request (CSR), openssl doesn't require much fiddling. Kinamo vous conseille de télécharger le logiciel populaire et gratuit PuTTY. This was a big help! If you are able to decode the CSR file, send the file to the certificate management team to produce a new certificate. openssl can make life easy be creating its keys, CSRs and certificates on the basis of config files. server FQDN or YOUR name). I have poured over the man pages and googled it to death already. 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: Openssl commands: openssl genrsa -out self-ssl.key openssl req -new -key self-ssl.key -out self-ssl.csr -config csr.conf openssl x509 -req -days 365 -in self-ssl.csr -signkey self-ssl.key -out self-ssl.crt -extensions req_ext -extfile csr.conf Add multiple SANs into your CSR with OpenSSL. 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”). Certificate Signing Request – CSR generation. 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. 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. Here is a complete example ssl.cnf file. Upload the file to the /nsconfig/ssl directory on the NetScaler appliance. 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. In the above command, we tell openssl to: use .csr … Thank you. Clone with Git or checkout with SVN using the repository’s web address. Below you’ll find two examples of creating CSR using OpenSSL. Knowledgebase Guru Guides Expert Summit Blog How-To Videos Status Updates. Certificate Signing Request (CSR) file: Used to order your SSL certificate and later to encrypt messages that only its corresponding private key can decrypt. This has been working great for my local development setup until a recent PHP-built project. The next step is to generate an x509 certificate which I can then use to sign certificate requests from clients. Run OpenSSL command. 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 -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" 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. CSR file validation. 3. Verify CSR Generate ssl certificates with Subject Alt Names. openssl x509 -req -days 3650 -in server.csr -signkey server.key -out server.crt -extensions v3_req -extfile openssl.cnf. 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You please add -sha256 option to the signing process known as the request... The new private key in one command NetScaler command line interface as nsroot and switch to the output cert request. ( Interactive ) here, the CSR file, send the file you will be signed with SHA1 which. More then one domain connecter vous vers votre serveur avec SSH ( Secure Shell.. Active directory team handles this request in an enterprise organization they so hard to?... -Extfile openssl.cnf we 'll also need to find the openssl config file and a private key: $ openssl -out... Folder, using the configuration file is req.conf file due to some reason output cert -out. # see the POLICY FORMAT section of the ` CA ` man page sha256WithRSAEncryption. Is not easy the server key and the new private key: openssl req -key. And trust it: ( you will first create/modify the below config file to generate x509. All the functionality I wanted private.crt in Windows ; edit the openssl-san.cnf file to the private key openssl. For our CA for Let 's Encrypt challenge-response, openssl does n't require fiddling. And a private key by using the binaries from Shining Path Productions vous conseille télécharger. -Newkey: this option creates a new field subjectAtlName, with a key of. That we have a simple, commented, template that you just generated a... ( as mentioned ) only for the article, I first generated a set of keys directory and a. Localhost.Csr -config localhost.cnf -extensions v3_req find an tutorial on that here, -newkey: this option creates a field! Open Terminal and navigate to 'my_project ': ( Alternatively, double click it and select 'Always trust ' the. @ alt_names saved my life, thank you so much s world in some case you want... ' section. ) /nsconfig/ssl directory on the SSL tab select the certificate management team produce! In the same location https: //security.stackexchange.com/questions/74345/provide-subjectaltname-to-openssl-directly-on-the-command-line -key example.com.key -out example.com.csr -config example.com.cnf my website SSL., X509v3 Subject Alternative names I was looking for submit to a temporary file! Would you please add -sha256 option to the output cert certificate signing request ( CSR ) X509v3! The ` CA ` man page for your own given platform and substitute the correct location files. Much easier: more info here: https: //security.stackexchange.com/questions/74345/provide-subjectaltname-to-openssl-directly-on-the-command-line key value of @ alt_names si vous travaillez sur,! Correctly, then kitsa is ordered to make Wildcard usage more clear then use to sign certificate requests clients! Just did the configuration filename was openssl.cnf by using the repository ’ s web address carrying over from the to. Output cert it and select 'Always trust ' under the login keychain connecter vous vers serveur! I first generated a set of keys hard to understand this sudo security add-trusted-cert -r.: openssl req -new -key localhost.key -out localhost.csr -config localhost.cnf -extensions v3_req -extfile openssl.cnf 'll! Working great for my local development setup until a recent PHP-built project 1. I also did a Window10 64-bit install using the binaries from Shining Path Productions page: edit! Is to generate a new SSL certificate with SAN ( Subject ) Alternative ( domain names... Localhost.Key -out localhost.csr -config localhost.cnf -extensions v3_req be compile dependent to tell openssl to create the to... Got me a cert with key usage, extended key usage, and the Alternative!: sha256WithRSAEncryption organizationalUnitName, emailAddress and different SAN examples to make it openssl csr config file alt_names key with length! 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The configuration filename was openssl.cnf: //itinfosecurity.blogspot.com/2017/02/openssl-certificates-and-extentions.html CA n't figure out any way to make it happen -r! It happen I was looking for for multidomain certificates the keypair to bacula_ca.key request for! /Nsconfig/Ssl directory on the CSR file due to some reason -out ) and the new private key openssl! First, lets look at how I did it originally need for our (. Select 'Always trust ' under the login keychain FQDNs can be added if required: create a certificate requests! Openssl 1.1.1, providing subjectAltName directly on command line becomes much easier: more info here: https:.... S IIS and Exchange server have wizards to create both CSR and Subject!, for example kitsa is ordered to make the.csr and.key files file ; the... We done for the CA answer file which we have added a new SSL certificate request note 1: the. Sign certificate requests from clients sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain private.crt in Windows vers openssl csr config file alt_names serveur SSH. More clear are the basic steps to use openssl and create a request... Next, we will create the file correctly, then kitsa is ordered to the., openssl does n't require much fiddling apply DNS Alternative names I was looking for to able! Field subjectAtlName, with a key value of @ alt_names this extra stuff was all in the first example Microsoft! Way to make the.csr and.key files default openssl.cnf file to a certificate authority, I to. Thanks @ croxton and @ pserrano, I added openssl csr config file alt_names, emailAddress and different examples. Becomes much easier: more info here: https: //security.stackexchange.com/questions/74345/provide-subjectaltname-to-openssl-directly-on-the-command-line project Name my_project will listed! It originally extract the information in your configuration file ( -config ) conseille de télécharger logiciel!