C Generate Certificate With Private Key

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Jul 09, 2019 If the Private Key key file is lost, you’ll need to reissue your Certificate. Can I generate a new Private Key for my Certificate if I lose the old one? You can generate a new private key and CSR, or use the automatic CSR and key generation during Certificate reissue (this option is available for all Certificates except for the Multi.

In case we generate the private key as well by rekey method of godaddy,then what is the procedure to install wildcard certificate on third party servers where we cant share the private key. Also in case it need to be shared what is the location where this private key.
Jul 09, 2019 If the Private Key key file is lost, you’ll need to reissue your Certificate. Can I generate a new Private Key for my Certificate if I lose the old one? You can generate a new private key and CSR, or use the automatic CSR and key generation during Certificate reissue (this option is available for all Certificates except for the Multi.
Generating a Certificate Authority (CA) Certificate for Self-Signing. Generate a CA private key. Generate the root CA certificate. openssl req -new -key CA-key.pem -x509 -days 1000 -out CA-cert.pem You will be prompted for information which will be incorporated into the certificate, such as Country, City, Company Name, etc.
Sep 12, 2014 Generate a Self-Signed Certificate from an Existing Private Key and CSR. Use this method if you already have a private key and CSR, and you want to generate a self-signed certificate with them. This command creates a self-signed certificate (domain.crt) from an existing private key (domain.key) and (domain.csr).
Generate & Import an SSL certificate. DESCRIPTION: This article contains the steps required for generating a PKCS#12 file for import on an Email Security appliance. RESOLUTION: The first step is to generate a private key which can be done either in Linux or Windows. Generating a private key in Linux. Access terminal within.
This article discusses how to generate an unencrypted private key and public certificate pair that is suitable for use with HTTPS, FTPS, and the administrative port for EFT Server. (To generate an encrypted key/certificate pair, refer to Generating an Encrypted Private Key and Self-Signed Public Certificate.) General Information.

A Key Vault (KV) certificate can be either created or imported into a key vault. When a KV certificate is created the private key is created inside the key vault and never exposed to certificate owner. The following are ways to create a certificate in Key Vault:

Create a self-signed certificate: This will create a public-private key pair and associate it with a certificate. The certificate will be signed by its own key.
Create a new certificate manually: This will create a public-private key pair and generate an X.509 certificate signing request. The signing request can be signed by your registration authority or certification authority. The signed x509 certificate can be merged with the pending key pair to complete the KV certificate in Key Vault. Although this method requires more steps, it does provide you with greater security because the private key is created in and restricted to Key Vault. This is explained in the diagram below.

The following descriptions correspond to the green lettered steps in the preceding diagram.

In the diagram above, your application is creating a certificate which internally begins by creating a key in your key vault.
Key Vault returns to your application a Certificate Signing Request (CSR)
Your application passes the CSR to your chosen CA.
Your chosen CA responds with an X509 Certificate.
Your application completes the new certificate creation with a merger of the X509 Certificate from your CA.

Create a certificate with a known issuer provider: This method requires you to do a one-time task of creating an issuer object. Once an issuer object is created in you key vault, its name can be referenced in the policy of the KV certificate. A request to create such a KV certificate will create a key pair in the vault and communicate with the issuer provider service using the information in the referenced issuer object to get an x509 certificate. The x509 certificate is retrieved from the issuer service and is merged with the key pair to complete the KV certificate creation.

The following descriptions correspond to the green lettered steps in the preceding diagram.

In the diagram above, your application is creating a certificate which internally begins by creating a key in your key vault.
Key Vault sends an TLS/SSL Certificate Request to the CA.
Your application polls, in a loop and wait process, for your Key Vault for certificate completion. The certificate creation is complete when Key Vault receives the CA’s response with x509 certificate.
The CA responds to Key Vault's TLS/SSL Certificate Request with an TLS/SSL X.509 certificate.
Your new certificate creation completes with the merger of the TLS/SSL X.509 certificate for the CA.

Asynchronous process

KV certificate creation is an asynchronous process. This operation will create a KV certificate request and return an http status code of 202 (Accepted). The status of the request can be tracked by polling the pending object created by this operation. The full URI of the pending object is returned in the LOCATION header.

When a request to create a KV certificate completes, the status of the pending object will change to “completed” from “inprogress”, and a new version of the KV certificate will be created. This will become the current version.

First creation

When a KV certificate is created for the first time, an addressable key and secret is also created with the same name as that of the certificate. If the name is already in use, then the operation will fail with an http status code of 409 (conflict).The addressable key and secret get their attributes from the KV certificate attributes. The addressable key and secret created this way are marked as managed keys and secrets, whose lifetime is managed by Key Vault. Managed keys and secrets are read-only. Note: If a KV certificate expires or is disabled, the corresponding key and secret will become inoperable.

If this is the first operation to create a KV certificate then a policy is required. A policy can also be supplied with successive create operations to replace the policy resource. If a policy is not supplied, then the policy resource on the service is used to create a next version of KV certificate. Note that while a request to create a next version is in progress, the current KV certificate, and corresponding addressable key and secret, remain unchanged.

Self-issued certificate

To create a self-issued certificate, set the issuer name as 'Self' in the certificate policy as shown in following snippet from certificate policy.

If the issuer name is not specified, then the issuer name is set to 'Unknown'. When issuer is 'Unknown', the certificate owner will have to manually get a x509 certificate from the issuer of his/her choice, then merge the public x509 certificate with the key vault certificate pending object to complete the certificate creation.

Partnered CA Providers

Certificate creation can be completed manually or using a “Self” issuer. Key Vault also partners with certain issuer providers to simplify the creation of certificates. The following types of certificates can be ordered for key vault with these partner issuer providers.

Provider	Certificate type
DigiCert	Key Vault offers OV or EV SSL certificates with DigiCert
GlobalSign	Key Vault offers OV or EV SSL certificates with GlobalSign

A certificate issuer is an entity represented in Azure Key Vault (KV) as a CertificateIssuer resource. It is used to provide information about the source of a KV certificate; issuer name, provider, credentials, and other administrative details.

Note that when an order is placed with the issuer provider, it may honor or override the x509 certificate extensions and certificate validity period based on the type of certificate.

Authorization: Requires the certificates/create permission.

Introduction

This document describes the procedure to generate certificates which have to be uploaded with every fresh installation of AMP Virtual Private Cloud (VPC). With the introduction of AMP Private Cloud 3.X, hostnames and certificate/key pairs are required for all of the following services:

Administration Portal
Authentication (new in Private Cloud 3.X)
FireAMP Console
Disposition Server
Disposition Server - Extended Protocol
Disposition Update Service
Firepower Management Center

Here, we will discuss a quick way to generate and upload the required certificates. You may tweak each of the parameters, including the hashing algorithm, key size, and others, as per your organization's policy, and your mechanism of generating these certificates might not match with what is detailed here.

Prerequisites

Components Used

Cisco recommends that you have knowledge of these topics:

Windows Server 2008 onwards
AMP Private Cloud installation
Public Key Infrastructure

Requirements

The information in this document is based on these software and hardware versions:

Windows Server 2008
CentOS 7
AMP Virtual Private Cloud 3.0.2

Warning: The procedure mentioned below can vary as per your CA server configuration. It is expected that the CA server of your choice is already provisioned and the configuration of the same has been completed. The following technote just describes an example of generating the certificates and Cisco TAC will not be involved in troubleshooting issues related to certificate generation and/or CA server issues of any kind.

Generate Certificates on Window Server

Ensure that the following roles are installed and configured on your Windows Server.

Active Directory Certificate Services
Certification Authority
Certification Authority Web Enrollment
Online Responder
Certificate Enrollment Web Service
Certificate Enrollment Policy Web Service
Active Directory Domain Services
DNS Servers
Web Server (IIS)

Generate a Certificate Signing Request (CSR)

Step 1. Navigate to MMC console, and add the Certificates snap-in for your computer account as shown in the image here.

Step 2. Drill down Certificates (Local Computer) > Personal > Certificates.

Step 3. Right click on the empty space and select All Tasks > Advanced Operations > Create Custom Request

Step 4. Click Next at the Enrollment window.

Step 5. Select your certificate enrollment policy and click Next.

Step 6. Choose the template as Web Server and click Next.

Step 7. If your 'Web Server' template has been configured correctly and is available for enrollment, you will see the status as 'Available' here. Click 'Details' to expand click on Properties.

C generate certificate with private key number

Step 8. At a minimum, add the CN and DNS attributes. The rest of the attributes can be added as per your security requirements.

Step 9. Optionally, give a Friendly Name under the General tab.

Step 10. Click on the PrivateKey tab and ensure that you're enabling Make private key exportable under the Key Options section.

Step 11. Finally, click on OK. This should lead you to the Certificate Enrollment dialog from where you can click on Next.

Step 12. Browse to a location to save the .req file which will be submitted to the CA server for signing.

Submitting the CSR to the CA and generating the certificate

C generate certificate with private key address

Step 1. Navigate to your MS AD Certificate Services Web Page as below and click 'Request a Certificate'

Step 2. Click on the advanced certificate request link.

Step 3. Click on Submit a certificate request by using a base-64-encoded CMC or PKCS #10 file, or submit a renewal request by using a base-64-encoded PKCS #7 file.

Step 4. Open the contents of the previously saved .req file (CSR) via Notepad. Copy the contents and paste it here. Ensure that the Certificate Template is selected as Web Server

Step 5. Finally, click on Submit.

Step 6. At this point, you should be able to Download the certificate as shown in the image here.

Exporting the Private Key and converting to PEM format

Step 1. Install the certificate into your Certificate Store by opening the .cer file and clicking on Install Certificate.

Step 2. Navigate to the MMC snap-in that was selected earlier.

Step 3. Navigate to the store where the certificate was installed.

Step 4. Right click the correct certificate, select All Tasks > Export.

Step 5. At the Certificate Export Wizard, confirm to export the private key as shown in the image.

Step 6. Enter a password and click Next to save the private key on your disk.

Step 7. This will save the private key in .PFX format, however, this needs to be converted to .PEM format to use this with AMP VPC.

Step 8. Install OpenSSL libraries from here:https://wiki.openssl.org/index.php/Binaries

Step 9. Open a command prompt window and change to the directory where you installed OpenSSL.

Step 10. Run the following command to extract the private key and save it to a new file: (If your PFX file is not in the same path as where the OpenSSL library is stored, you will have to specify the exact path along with the filename)

Step 11. Now run the following command to also extract the public cert and save it to a new file:

Generate Certificate on Linux Server

Ensure that the Linux server that you're trying to generate the required certificates has the OpenSSL libraries installed. Verifying if this and the procedure listed below will vary from the Linux distribution that you're running. This portion has been documented, as done on a CentOS 7 server.

Generate Self Signed RootCA

Step 1. Generate the Private Key for Root CA certificate

Step 2. Generate the CA certificate

Generate a certificate for each service

Create the certificate for Authentication, Console, Disposition, Disposition-Extended, Update server, Firepower Management Center(FMC) service as per the DNS name entry. You need to repeat below certificate generate process for each service (Authentication, Console etc.)

Generate Private key

Replace the <example.key> with actual certificate key such as Auth-Cert.key.

Generate CSR

Replace the <example.csr> with actual certificate CSR such as Auth-Cert.csr

Generate Certificate

Replace <example.csr>, <example.crt> with actual certificate CSR and certificate name

Adding The Certificates to AMP VPC

Step 1. Once the certificates are generated from any of the above methods, upload the corresponding certificate for each of the services. If they have been generated correctly, all the check marks are enabled as seen in the image here.

Verify