Rebase #14178 / Add not_before_duration API parameter to Root/Intermediate CA generation (#15511)

* PKI - Add not_before_duration API parameter to:
  - Root CA generation
  - Intermediate CA generation
  - Intermediate CA signing

* Move not_before_duration to addCACommonFields

This gets applied on both root generation and intermediate signing,
which is the correct place to apply this.

Co-authored-by: guysv <sviryguy@gmail.com>
Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Add changelog entry

Resolves: #10631

Co-authored-by: guysv <sviryguy@gmail.com>
Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Add test case for root/generate, sign-intermediate

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Update path role description

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Add new not_before_duration to relevant docs

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

Co-authored-by: guysv <sviryguy@gmail.com>

builtin/logical/pki/backend_test.go

@@ -174,6 +174,7 @@ func TestPKI_DeviceCert(t *testing.T) {
 	resp, err := client.Logical().Write("pki/root/generate/internal", map[string]interface{}{
 		"common_name":         "myvault.com",
 		"not_after":           "9999-12-31T23:59:59Z",
+		"not_before_duration": "2h",
 	})
 	if err != nil {
 		t.Fatal(err)
@@ -194,7 +195,10 @@ func TestPKI_DeviceCert(t *testing.T) {
 	cert := parsedCertBundle.Certificate
 	notAfter := cert.NotAfter.Format(time.RFC3339)
 	if notAfter != "9999-12-31T23:59:59Z" {
-		t.Fatal(fmt.Errorf("not after from certificate  is not matching with input parameter"))
+		t.Fatalf("not after from certificate: %v is not matching with input parameter: %v", cert.NotAfter, "9999-12-31T23:59:59Z")
+	}
+	if math.Abs(float64(time.Now().Add(-2*time.Hour).Unix()-cert.NotBefore.Unix())) > 10 {
+		t.Fatalf("root/generate/internal did not properly set validity period (notBefore): was %v vs expected %v", cert.NotBefore, time.Now().Add(-2*time.Hour))
 	}
 
 	// Create a role which does require CN (default)
@@ -586,6 +590,7 @@ func generateURLSteps(t *testing.T, caCert, caKey string, intdata, reqdata map[s
 				"common_name":         "intermediate.cert.com",
 				"csr":                 csrPem2048,
 				"format":              "der",
+				"not_before_duration": "2h",
 			},
 			Check: func(resp *logical.Response) error {
 				certString := resp.Data["certificate"].(string)
@@ -616,6 +621,10 @@ func generateURLSteps(t *testing.T, caCert, caKey string, intdata, reqdata map[s
 					return fmt.Errorf("expected\n%#v\ngot\n%#v\n", []string{"intermediate.cert.com"}, cert.DNSNames)
 				}
 
+				if math.Abs(float64(time.Now().Add(-2*time.Hour).Unix()-cert.NotBefore.Unix())) > 10 {
+					t.Fatalf("root/sign-intermediate did not properly set validity period (notBefore): was %v vs expected %v", cert.NotBefore, time.Now().Add(-2*time.Hour))
+				}
+
 				return nil
 			},
 		},

builtin/logical/pki/ca_util.go

@@ -63,6 +63,7 @@ func (b *backend) getGenerationParams(ctx context.Context, storage logical.Stora
 		Province:                  data.Get("province").([]string),
 		StreetAddress:             data.Get("street_address").([]string),
 		PostalCode:                data.Get("postal_code").([]string),
+		NotBeforeDuration:         time.Duration(data.Get("not_before_duration").(int)) * time.Second,
 	}
 	*role.AllowWildcardCertificates = true
 

builtin/logical/pki/fields.go

@@ -250,12 +250,22 @@ If you want more than one, specify alternative names in the alt_names
 map using OID 2.5.4.5. This has no impact on the final certificate's
 Serial Number field.`,
 	}
+
 	fields["not_after"] = &framework.FieldSchema{
 		Type: framework.TypeString,
 		Description: `Set the not after field of the certificate with specified date value.
 The value format should be given in UTC format YYYY-MM-ddTHH:MM:SSZ`,
 	}
 
+	fields["not_before_duration"] = &framework.FieldSchema{
+		Type:        framework.TypeDurationSecond,
+		Default:     30,
+		Description: `The duration before now which the certificate needs to be backdated by.`,
+		DisplayAttrs: &framework.DisplayAttributes{
+			Value: 30,
+		},
+	}
+
 	return fields
 }
 

builtin/logical/pki/path_roles.go

@@ -397,7 +397,7 @@ for "generate_lease".`,
 			"not_before_duration": {
 				Type:        framework.TypeDurationSecond,
 				Default:     30,
-				Description: `The duration before now the cert needs to be created / signed.`,
+				Description: `The duration before now which the certificate needs to be backdated by.`,
 				DisplayAttrs: &framework.DisplayAttributes{
 					Value: 30,
 				},

builtin/logical/pki/path_root.go

@@ -288,6 +288,7 @@ func (b *backend) pathIssuerSignIntermediate(ctx context.Context, req *logical.R
 		AllowedSerialNumbers:      []string{"*"},
 		AllowedURISANs:            []string{"*"},
 		NotAfter:                  data.Get("not_after").(string),
+		NotBeforeDuration:         time.Duration(data.Get("not_before_duration").(int)) * time.Second,
 	}
 	*role.AllowWildcardCertificates = true
 

changelog/14178.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+secrets/pki: Add not_before_duration to root CA generation, intermediate CA signing paths.
+```

website/content/api-docs/secret/pki.mdx

@@ -548,6 +548,10 @@ when signing an externally-owned intermediate.
   `alt_names` map using OID 2.5.4.5. Note that this has no impact on the
   Certificate's serial number field, which Vault randomly generates.
 
+- `not_before_duration` `(duration: "30s")` - Specifies the duration by which to
+  backdate the NotBefore property. This value has no impact in the validity period
+  of the requested certificate, specified in the `ttl` field.
+
 - `not_after` `(string)` - Set the Not After field of the certificate with
   specified date value. The value format should be given in UTC format
   `YYYY-MM-ddTHH:MM:SSZ`. Supports the Y10K end date for IEEE 802.1AR-2018
@@ -1288,6 +1292,10 @@ use the values set via `config/urls`.
   `alt_names` map using OID 2.5.4.5. Note that this has no impact on the
   Certificate's serial number field, which Vault randomly generates.
 
+- `not_before_duration` `(duration: "30s")` - Specifies the duration by which to
+  backdate the NotBefore property. This value has no impact in the validity period
+  of the requested certificate, specified in the `ttl` field.
+
 - `not_after` `(string)` - Set the Not After field of the certificate with
   specified date value. The value format should be given in UTC format
   `YYYY-MM-ddTHH:MM:SSZ`. Supports the Y10K end date for IEEE 802.1AR-2018