# cd /root/certs # openssl req -nodes -new -extensions server \ -keyout server.key -out server.csr # openssl ca -extensions server \ -out server.crt -in server.csr In order to create a client key and certificate, run the following commands.
Oct 13, 2013 · Zakir Durumeric | October 13, 2013. While OpenSSL has become one of the defacto libraries for performing SSL and TLS operations, the library is surprisingly opaque and its documentation is, at times, abysmal. openssl.cnf をセットアップするとき 、 keyUsage に気づいた パラメータは、明らかにキーが使用されることになっているものに設定する必要があります。パラメーター値は文書化されていますが、特定の状況でどのパラメーターを使用するかについての情報は # This is typical in keyUsage for a client certificate. keyUsage = nonRepudiation, digitalSignature, keyEncipherment # This will be displayed in Netscape's comment listbox. nsComment = "OpenSSL Generated Certificate" # PKIX recommendations harmless if included in all certificates. subjectKeyIdentifier=hash authorityKeyIdentifier=keyid,issuer keyUsage = nonRepudiation, digitalSignature, keyEncipherment. After the keyUsage line, insert the following line: subjectAltName = @alt_names. If you’re creating a self-signed SAN certificate, do the following to give the certificate permission to sign the certificate: keyUsage = keyEncipherment, dataEncipherment extendedKeyUsage = serverAuth subjectAltName = @alt_names [alt_names] DNS.1 = alternatename1 DNS.2 = alternatename2 IP.1 = 10.191.84.22 IP.2 = 10.191.84.23. The alternate names I have used are alternatename1 and alternatename2. $ openssl ca -config config/openssl.cnf -in csr/ < your >.csr -out newcerts/ < your >.crt -extensions v3_intermediate_ca where openssl.cnf has a section much like the following: [ v3_intermediate_ca ] subjectKeyIdentifier = hash authorityKeyIdentifier = keyid:always,issuer basicConstraints = critical,CA:true,pathlen:0 keyUsage = critical
Jun 23, 2020 · openssl genrsa -out dev.deliciousbrains.com.key 2048 Then we create a CSR: openssl req -new -key dev.deliciousbrains.com.key -out dev.deliciousbrains.com.csr You’ll get all the same questions as you did above and, again, your answers don’t matter.
I want to use OpenSSL to create a CSR and submit it to my CA (which uses Microsoft PKI) and receive certificates that can be used for both Server Auth and Client Auth. I'm not clear on a couple of things, which may simply be a a link between keyUsage and nsCertType. In the following example we have used the openssl application to examine the CSR we generated for our mail server in the previous section. As you can see the CSR has been generated as we expected with all the requested extensions present, the correct keyUsage settings as well as the now deprecated Netscape Cert Type entries for backward openssl x509 -req -in req.pem -extfile openssl.cnf -extensions v3_usr \ -CA cacert.pem -CAkey key.pem -CAcreateserial Set a certificate to be trusted for SSL client use and change set its alias to "Steve's Class 1 CA" openssl x509 -in cert.pem -addtrust sslclient \ -alias "Steve's Class 1 CA" -out trust.pem References¶. http://www.openssl.org/docs/apps/config.html; http://www.openssl.org/docs/apps/req.html#CONFIGURATION_FILE_FORMAT; http://www.openssl.org/docs/apps
# This is typical in keyUsage for a client certificate. # keyUsage = nonRepudiation, digitalSignature, keyEncipherment # This will be displayed in Netscape's comment listbox. nsComment = "OpenSSL Generated Certificate" # PKIX recommendations harmless if included in all certificates. subjectKeyIdentifier=hash: authorityKeyIdentifier=keyid,issuer
#openssl ca -policy policy_anything -config -out windows_server.crt -extensions some_ext -extfile some_extensions.txt -infiles cert_request.csr provided, you have created a file named "some_extensions.txt" on the same directory and it has got the required extensions the windows box required. id-ce-keyUsage This extension indicates the purpose for which the certified public key is used. This extension may, at the option of the certificate issuer, be either critical or non-critical. >> OpenSSL has Key Encipherment (e0) as a Key Usage, while a certificate >> generated through MS Certificate Server has Key Encipherment (a0). > > What do you get in the keyUsage extension when you do: > > openssl x509 -in cert.pem -noout -text > openssl shows "Key Encipherment" for both certifcates. Is the e0/a0 issue a MS undocumented "feature"? Type openssl req -new -key privkey.pem -out request.csr This command generates a CSR in the PEM format in your current working directory. When you are prompted for the x509 Common Name attribute information, type your fully-qualified domain name (FQDN). Use other information as appropriate. # cd /root/ca # openssl req -config openssl.cnf \-key private/ca.key.pem \-new -x509 -days 7300-sha256 -extensions v3_ca \-out certs/ca.cert.pem Enter pass phrase for ca.key.pem: secretpassword You are about to be asked to enter information that will be incorporated into your certificate request. May 27, 2020 · [root@centos8-1 certs]# cat client_cert_ext.cnf basicConstraints = CA:FALSE nsCertType = client, email nsComment = "OpenSSL Generated Client Certificate" subjectKeyIdentifier = hash authorityKeyIdentifier = keyid,issuer keyUsage = critical, nonRepudiation, digitalSignature, keyEncipherment extendedKeyUsage = clientAuth, emailProtection