> For the complete documentation index, see [llms.txt](https://docs.lightbeam.ai/lxqobxw6ak7CTnsQjikH/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lightbeam.ai/lxqobxw6ak7CTnsQjikH/getting-started/installer-guides/integration-and-setup/generate-csr-for-lightbeam.md).

# Generate CSR for LightBeam

### Step-by-Step Guide

Here is a script that combines the generation of the private key and CSR using the configuration file:

```
#!/bin/bash
# Define filenames
PRIVATE_KEY="private.key"
CSR="request.csr"
CONFIG_FILE="openssl.cnf"
# Create OpenSSL configuration file
cat > $CONFIG_FILE <<EOL
[ req ]
default_bits = 2048
default_md = sha256
prompt = no
default_keyfile = $PRIVATE_KEY
distinguished_name = req_distinguished_name
req_extensions = req_ext
[ req_distinguished_name ]
C = US
ST = California
L = San Francisco
O = My Organization
OU = My Organizational Unit
CN = abc@def.com
emailAddress = abc@def.com
[ req_ext ]
subjectAltName = @alt_names
[ alt_names ]
email.1 = abc@def.com
EOL
# Generate private key
echo "Generating private key..."
openssl genpkey -algorithm RSA -out $PRIVATE_KEY -aes256
# Generate CSR
echo "Generating CSR..."
openssl req -new -key $PRIVATE_KEY -out $CSR -config $CONFIG_FILE
echo "Private key and CSR have been generated."
```

#### Usage

1\. Save the script to a file, for example, \``generate_key_and_csr_with_san.sh`\`.<br>

2\. Make the script executable:

`chmod +x generate_key_and_csr_with_san.sh`

\
3\. Run the script:

`./generate_key_and_csr_with_san.sh`

This script will generate a private key and a CSR with the \`subjectAltName\` set to \`<abc@def.com>\`. Adjust the values in the configuration file section of the script as needed for your specific requirements.<br>

#### Configuration File Sections:

* `[ req ]:` Main settings for the request.
  * `default_bits:` Key size.
  * `default_md:` Message digest algorithm.
  * `prompt:` Whether to prompt for details.
  * `default_keyfile:` Default private key file.
  * `distinguished_name:` Section for distinguished name.
  * `req_extensions:` Section for request extensions.<br>
* `[ req_distinguished_name ]:` Details for the distinguished name.<br>
* `[ req_ext ]:` Extensions to add to the request.<br>
* `[ alt_names ]:` Subject alternative names.


---

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