KMS keys should be rotated at least every 90 days
Default Severity: high
Explanation
Keys should be rotated on a regular basis to limit exposure if a given key should become compromised.
Possible Impact
Exposure is greater if the same keys are used over a long period
Suggested Resolution
Set key rotation period to 90 days
Insecure Example
The following example will fail the google-kms-rotate-kms-keys check.
resource "google_kms_key_ring" "keyring" {
name = "keyring-example"
location = "global"
}
resource "google_kms_crypto_key" "example-key" {
name = "crypto-key-example"
key_ring = google_kms_key_ring.keyring.id
rotation_period = "15552000s"
lifecycle {
prevent_destroy = true
}
}
Secure Example
The following example will pass the google-kms-rotate-kms-keys check.
resource "google_kms_key_ring" "keyring" {
name = "keyring-example"
location = "global"
}
resource "google_kms_crypto_key" "example-key" {
name = "crypto-key-example"
key_ring = google_kms_key_ring.keyring.id
rotation_period = "7776000s"
lifecycle {
prevent_destroy = true
}
}