Generate Public Key For Terraform Aws

This module can be used to generate a Certificate Authority (CA) public key and the public and private keys of aTLS certificate signed by this CA. This certificate is meant to be used with private/microsoft-office-professional-plus-2010-product-key-generator-online.html. services, such as a Vaultcluster accessed solely within your AWS account. For publicly-accessible services, especially services you accessthrough a web browser, you should NOT use this module, and instead get certificates from a commercial CertificateAuthority, such as Let's Encrypt.

Sep 26, 2018 Create New Key; Use Existing Key. You can create one key using AWS console and use the existing one which is already present as shown below. Now in your terraform code, you have to just use this key name in your configuration like this. Resource “awsinstance” “bastion” count = “1”. If you have the private SSH key you can re-generate the public key component simply by running the following ssh-keygen command: ssh-keygen -i -f /path/to/private-key /path/to/public-key That much is the simple part. The AWS console and API does not support pushing 2 keypairs when starting an EC2 instance. Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Mar 19, 2020 AWS Key Pair Terraform module. Terraform module which creates EC2 key pair resource by Terraform AWS provider. This type of resources are supported: EC2 Key Pair; Terraform versions. Only Terraform 0.12 is supported. Usage Create new EC2 key pair.

» tlsprivatekey. Generates a secure private key and encodes it as PEM. This resource is primarily intended for easily bootstrapping throwaway development environments. Important Security Notice The private key generated by this resource will be stored unencrypted in your Terraform state file.

Account

If you're unfamiliar with how TLS certificates work, check out the Background section.

Quick start

  1. Copy this module to your computer.

  2. Open variables.tf and fill in the variables that do not have a default.

  3. DO NOT configure Terraform remote state storage for this code. You do NOT want to store the state files as theywill contain the private keys for the certificates.

  4. Run terraform apply. The output will show you the paths to the generated files:

  5. Delete your local Terraform state:

    The Terraform state will contain the private keys for the certificates, so it's important to clean it up!

  6. To inspect a certificate, you can use OpenSSL:

Now that you have your TLS certs, check out the next section for how to use them.

Using TLS certs

Distributing TLS certs to your servers

Distribute the private and public keys (the files at private_key_file_path and public_key_file_path) to theservers that will use them to handle TLS connections (e.g. Vault). For example, to run Vault with the run-vaultmodule, you need to pass it the TLS certs:

We strongly recommend encrypting the private key file while it's in transit to the servers that will use it. Hereare some of the ways you could do this:

  • Encrypt the certificate using KMS and include the encrypted files in the AMI for yourVault servers. Give those servers an IAM role that lets them access the same KMS key and decrypt their certs justbefore booting.
  • Put your TLS cert in a secure S3 Bucket with encryption enabled. Give your Vault servers an IAM role that allows themto download the certs from the S3 bucket just before booting.
  • Manually upload the certificate to each EC2 Instance with scp.

Distributing TLS certs to your clients

Distribute the CA public key (the file at ca_public_key_file_path) to any clients of those services so they canvalidate the server's TLS cert. Without the CA public key, the clients will reject any TLS connections:

Most TLS clients offer a way to explicitly specify extra public keys that you want to trust. For example, withVault, you do this via the -ca-cert argument:

As an alternative, you can configure the certificate trust on your server so that all TLS clients trust your CApublic key by running the update-certificate-store module on your server. Onceyou do that, your system will trust the public key without having to pass it in explicitly:

Background

How TLS/SSL Works

Terraform Aws Tutorial

The industry-standard way to add encryption for data in motion is to use TLS (the successor to SSL). There are manyexamples online explaining how TLS works, but here are the basics:

Using terraform with aws

  • Some entity decides to be a 'Certificate Authority' ('CA') meaning it will issue TLS certificates to websites orother services

  • An entity becomes a Certificate Authority by creating a public/private key pair and publishing the public portion(typically known as the 'CA Cert'). The private key is kept under the tightest possible security since anyone whopossesses it could issue TLS certificates as if they were this Certificate Authority!

  • In fact, the consequences of a CA's private key being compromised are so disastrous that CA's typically create an'intermediate' CA keypair with their 'root' CA key, and only issue TLS certificates with the intermediate key.

  • Your client (e.g. a web browser) can decide to trust this newly created Certificate Authority by including its CACert (the CA's public key) when making an outbound request to a service that uses the TLS certificate.

  • When CAs issue a TLS certificate ('TLS cert') to a service, they again create a public/private keypair, but this timethe public key is 'signed' by the CA. That public key is what you view when you click on the lock icon in a webbrowser and what a service 'advertises' to any clients such as web browsers to declare who it is. When we say thatthe CA signed a public key, we mean that, cryptographically, any possessor of the CA Cert can validate that this sameCA issued this particular public key.

  • The public key is more generally known as the TLS cert.

  • The private key created by the CA must be kept secret by the service since the possessor of the private key can'prove' they are whoever the TLS cert (public key) claims to be as part of the TLS protocol.

  • How does that 'proof' work? Well, your web browser will attempt to validate the TLS cert in two ways:

    • First, it will ensure this public key (TLS cert) is in fact signed by a CA it trusts.
    • Second, using the TLS protocol, your browser will encrypt a message with the public key (TLS cert) that only thepossessor of the corresponding private key can decrypt. In this manner, your browser will be able to come up with asymmetric encryption key it can use to encrypt all traffic for just that one web session.

  • Now your client/browser has:

    • declared which CA it will trust
    • verified that the service it's connecting to possesses a certificate issued by a CA it trusts
    • used that service's public key (TLS cert) to establish a secure session

Commercial or Public Certificate Authorities

For public services like banks, healthcare, and the like, it makes sense to use a 'Commercial CA' like Verisign, Thawte,or Digicert, or better yet a widely trusted but free service like Let's Encrypt. That'sbecause every web browser comes pre-configured with a set of CA's that it trusts. This means the client connecting tothe bank doesn't have to know anything about CA's at all. Instead, their web browser is configured to trust the CA thathappened to issue the bank's certificate.

Generate Public Key For Terraform Aws Download

Connecting securely to private services is similar to connecting to your bank's website over TLS, with one primarydifference: We want total control over the CA.

Generate Public Key For Terraform Aws Login

Imagine if we used a commercial CA to issue our private TLS certificate and that commercial or public CA--which wedon't control--were compromised. Now the attackers of that commercial or public CA could impersonate our private server.And indeed, ithashappenedmultiple times.

How We'll Generate a TLS Cert for Private Services

One option is to be very selective about choosing a commercial CA, but to what benefit? What we want instead isassurance that our private service really was launched by people we trust. Those same people--let's call them our'operators'--can become their own CA and generate their ownCdex for mac free download. TLS certificate for the private service.

Sure, no one else in the world will trust this CA, but we don't care because we only need our organization to trustthis CA.

So here's our strategy for issuing a TLS Cert for a private service:

Terraform Aws Module

  1. Create our own CA.

    • If a client wishes to trust our CA, they need only reference this CA public key.
    • We'll deal with the private key in a moment.

  2. Using our CA, issue a TLS Certificate for our private service.

    • Create a public/private key pair for the private service, and have the CA sign the public key.
    • This means anyone who trusts the CA will trust that the possessor of the private key that corresponds to this publickey is who they claim to be.
    • We will be extremely careful with the TLS private key since anyone who obtains it can impersonate our privateservice! For this reason, we recommend immediately encrypting the private key withKMS.

  3. Freely advertise our CA's public key to all internal services.

    • Any service that wishes to connect securely to our private service will need our CA's public key so it can declarethat it trusts this CA, and thereby the TLS cert it issued to the private service.

  4. Throw away the CA private key. Windows 7 enterprise key generator free download.

    • By erasing a CA private key it's impossible for the CA to be compromised, because there's no private key to steal!
    • Future certs can be generated with a new CA.