diff --git a/.gitignore b/.gitignore
index 5a979af..07528d8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,3 +38,6 @@ out/
 
 ### Kotlin ###
 .kotlin
+
+### Cert ###
+/keys/
diff --git a/README.md b/README.md
index 68cc680..f272003 100644
--- a/README.md
+++ b/README.md
@@ -7,9 +7,10 @@ Classes crafted, identities bestowed, Each device recorded, their functions unfo
 | name                   | required | info                    |
 |------------------------|----------|-------------------------|
 | spring.profiles.active | *        | Spring Boot environment |
-| spring.r2dbc.url       | *        | Postgreas host url      |
-| spring.r2dbc.username  | *        | Postgreas username      |
-| spring.r2dbc.password  | **       | Postgreas password      |
+| spring.r2dbc.url       | *        | Postgres host url       |
+| spring.r2dbc.username  | *        | Postgres username       |
+| spring.r2dbc.password  | **       | Postgres password       |
+| jwt.private-key        |          | JWT private cert        |
 
 Required: * can be stored as text, and ** need to be stored as secret.  
 
@@ -17,7 +18,23 @@ Required: * can be stored as text, and ** need to be stored as secret.
 
 Run `release.sh` script from `master` branch.
 
-## Development Configuration
+## Development Information
+
+### Generate Private and Public RSA Key
+
+OpenSSL Project is dedicated to providing a simple installation of OpenSSL for Microsoft Windows. [Download](https://slproweb.com/products/Win32OpenSSL.html)
+
+Generate an RSA private key, of size 2048, and output it to a file named `private_key.pem` in to `./keys`
+
+```shell
+openssl genrsa -out private_key.pem 2048
+```
+
+Extract the public key from `private_key.pem` from `./keys`, and output it to a file named `public_key.pem` in to `./keys`
+
+```shell
+openssl rsa -in private_key.pem -pubout -out public_key.pem
+```
 
 ### Global gradle properties
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 6a86613..ea56b20 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,6 +8,7 @@ plugins {
 
 dependencies {
     implementation(hlaeja.com.fasterxml.jackson.module.kotlin)
+    implementation(hlaeja.jjwt.api)
     implementation(hlaeja.kotlin.logging)
     implementation(hlaeja.kotlin.reflect)
     implementation(hlaeja.kotlinx.coroutines)
@@ -16,6 +17,8 @@ dependencies {
     implementation(hlaeja.org.springframework.springboot.r2dbc.starter)
     implementation(hlaeja.org.springframework.springboot.webflux.starter)
 
+    runtimeOnly(hlaeja.jjwt.impl)
+    runtimeOnly(hlaeja.jjwt.jackson)
     runtimeOnly(hlaeja.org.postgresql)
     runtimeOnly(hlaeja.org.postgresql.r2dbc)
 
@@ -30,3 +33,15 @@ dependencies {
 }
 
 group = "ltd.hlaeja"
+
+tasks {
+    named("processResources") {
+        dependsOn("copyPrivateKey")
+    }
+    register<Copy>("copyPrivateKey") {
+        group = "hlaeja"
+        from("keys/private_key.pem")
+        into("${layout.buildDirectory.get()}/resources/main/keys")
+        onlyIf { file("keys/private_key.pem").exists() }
+    }
+}
diff --git a/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/src/main/resources/META-INF/additional-spring-configuration-metadata.json
index 26fe8e1..1eb3135 100644
--- a/src/main/resources/META-INF/additional-spring-configuration-metadata.json
+++ b/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -19,6 +19,11 @@
       "name": "spring.application.build.os.version",
       "type": "java.lang.String",
       "description": "Application build os version."
+    },
+    {
+      "name": "jwt.private-key",
+      "type": "java.lang.String",
+      "description": "Jwt private key file."
     }
   ]
 }
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 4a1d828..d420659 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -10,6 +10,9 @@ spring:
         name: "%APP_BUILD_OS_NAME%"
         version: "%APP_BUILD_OS_VERSION%"
 
+jwt:
+  private-key: keys/private_key.pem
+
 ---
 ###############################
 ### Development environment ###
diff --git a/src/test/resources/application.yml b/src/test/resources/application.yml
new file mode 100644
index 0000000..6fc0193
--- /dev/null
+++ b/src/test/resources/application.yml
@@ -0,0 +1,8 @@
+jwt:
+  private-key: keys/valid-private-key.pem
+
+spring:
+  r2dbc:
+    url: r2dbc:postgresql://placeholder
+    username: placeholder
+    password: placeholder