Create a client certificate using your CA certificate
You can use your own certificate authority (CA) to create client certificates. The client certificate must be registered with AWS IoT before use. For information about the registration options for your client certificates, see Register a client certificate.
Create a client certificate (CLI)
Note
You can't perform this procedure in the AWS IoT console.
To create a client certificate using the AWS CLI
-
Generate a key pair.
openssl genrsa -out
device_cert_key_filename.key
2048 -
Create a CSR for the client certificate.
openssl req -new \ -key
device_cert_key_filename.key
\ -outdevice_cert_csr_filename.csr
You are prompted for some information, as shown here:
You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter '.', the field will be left blank. ----- Country Name (2 letter code) [AU]: State or Province Name (full name) []: Locality Name (for example, city) []: Organization Name (for example, company) []: Organizational Unit Name (for example, section) []: Common Name (e.g. server FQDN or YOUR name) []: Email Address []: Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []: An optional company name []:
-
Create a client certificate from the CSR.
openssl x509 -req \ -in
device_cert_csr_filename.csr
\ -CAroot_CA_cert_filename.pem
\ -CAkeyroot_CA_key_filename.key
\ -CAcreateserial \ -outdevice_cert_filename.pem
\ -days 500 -sha256
At this point, the client certificate has been created, but it has not yet been registered with AWS IoT. For information about how and when to register the client certificate, see Register a client certificate.