Issues using certificates in terraform - ssl

Question

I'm facing some issues while dealing with certificates in terraform.
Before writing the code below, i've already made a CSR request.
I need to say that certificate_pem and private_key are both encoded in base64, particularly private_key is encrypted.
In the code below, i would like to use private_key and certificate_pem.
resource "kubernetes_secret" "my-secret" {
data = {
"tls.crt" = data.my_data.my-configuration-secret.data["certificate_pem"]
"tls.key" = data.my_data.my-configuration-secret.data["private_key"]
}
metadata {
name = "my-secret"
namespace = "my-namespace"
}
}
Now, in the Ingress ressource, i use this secret name
resource "kubernetes_ingress" "my-sni" {
metadata {
name = "my-sni"
namespace = "my_namespace"
annotations = {
"kubernetes.io/ingress.class" = "my_namespace"
"kubernetes.io/ingress.allow-http" = "true"
"nginx.ingress.kubernetes.io/ssl-redirect" = "false"
"nginx.ingress.kubernetes.io/force-ssl-redirect" = "false"
"nginx.ingress.kubernetes.io/ssl-passthrough" = "false"
"nginx.ingress.kubernetes.io/secure-backends" = "false"
"nginx.ingress.kubernetes.io/proxy-body-size" = "0"
"nginx.ingress.kubernetes.io/proxy-read-timeout" = "3600000"
"nginx.ingress.kubernetes.io/rewrite-target" = "/$1"
"nginx.ingress.kubernetes.io/proxy-send-timeout" = "400000"
"nginx.ingress.kubernetes.io/backend-protocol" = "HTTP"
}
}
spec {
tls {
hosts = ["my_host"]
secret_name = "my-secret"
}
rule {
host = "my_host"
http {
path {
path = "/?(.*)"
backend {
service_name = "my-service"
service_port = 8080
}
}
}
}
}
}
Everything is fine with terraform apply, but i can't go on the host to check if i can access to the microservice.
Someone told me i've to uncypher the private_key.
I don't know how to do that