Merge pull request #3569 from Infisical/pki-subscriber

Infisical PKI: Subscriber Functionality

backend/src/@types/fastify.d.ts

@@ -80,6 +80,7 @@ import { TOrgServiceFactory } from "@app/services/org/org-service";
 import { TOrgAdminServiceFactory } from "@app/services/org-admin/org-admin-service";
 import { TPkiAlertServiceFactory } from "@app/services/pki-alert/pki-alert-service";
 import { TPkiCollectionServiceFactory } from "@app/services/pki-collection/pki-collection-service";
+import { TPkiSubscriberServiceFactory } from "@app/services/pki-subscriber/pki-subscriber-service";
 import { TProjectServiceFactory } from "@app/services/project/project-service";
 import { TProjectBotServiceFactory } from "@app/services/project-bot/project-bot-service";
 import { TProjectEnvServiceFactory } from "@app/services/project-env/project-env-service";
@@ -232,6 +233,7 @@ declare module "fastify" {
       certificateAuthorityCrl: TCertificateAuthorityCrlServiceFactory;
       certificateEst: TCertificateEstServiceFactory;
       pkiCollection: TPkiCollectionServiceFactory;
+      pkiSubscriber: TPkiSubscriberServiceFactory;
       secretScanning: TSecretScanningServiceFactory;
       license: TLicenseServiceFactory;
       trustedIp: TTrustedIpServiceFactory;

backend/src/@types/knex.d.ts

@@ -209,6 +209,9 @@ import {
   TPkiCollections,
   TPkiCollectionsInsert,
   TPkiCollectionsUpdate,
+  TPkiSubscribers,
+  TPkiSubscribersInsert,
+  TPkiSubscribersUpdate,
   TProjectBots,
   TProjectBotsInsert,
   TProjectBotsUpdate,
@@ -564,6 +567,11 @@ declare module "knex/types/tables" {
       TPkiCollectionItemsInsert,
       TPkiCollectionItemsUpdate
     >;
+    [TableName.PkiSubscriber]: KnexOriginal.CompositeTableType<
+      TPkiSubscribers,
+      TPkiSubscribersInsert,
+      TPkiSubscribersUpdate
+    >;
     [TableName.UserGroupMembership]: KnexOriginal.CompositeTableType<
       TUserGroupMembership,
       TUserGroupMembershipInsert,

backend/src/db/migrations/20250508160957_pki-subscriber.ts

@@ -0,0 +1,46 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+import { createOnUpdateTrigger, dropOnUpdateTrigger } from "../utils";
+
+export async function up(knex: Knex): Promise<void> {
+  if (!(await knex.schema.hasTable(TableName.PkiSubscriber))) {
+    await knex.schema.createTable(TableName.PkiSubscriber, (t) => {
+      t.uuid("id", { primaryKey: true }).defaultTo(knex.fn.uuid());
+      t.timestamps(true, true, true);
+      t.string("projectId").notNullable();
+      t.foreign("projectId").references("id").inTable(TableName.Project).onDelete("CASCADE");
+      t.uuid("caId").nullable();
+      t.foreign("caId").references("id").inTable(TableName.CertificateAuthority).onDelete("SET NULL");
+      t.string("name").notNullable();
+      t.string("commonName").notNullable();
+      t.specificType("subjectAlternativeNames", "text[]").notNullable();
+      t.string("ttl").notNullable();
+      t.specificType("keyUsages", "text[]").notNullable();
+      t.specificType("extendedKeyUsages", "text[]").notNullable();
+      t.string("status").notNullable(); // active / disabled
+      t.unique(["projectId", "name"]);
+    });
+    await createOnUpdateTrigger(knex, TableName.PkiSubscriber);
+  }
+
+  const hasSubscriberCol = await knex.schema.hasColumn(TableName.Certificate, "pkiSubscriberId");
+  if (!hasSubscriberCol) {
+    await knex.schema.alterTable(TableName.Certificate, (t) => {
+      t.uuid("pkiSubscriberId").nullable();
+      t.foreign("pkiSubscriberId").references("id").inTable(TableName.PkiSubscriber).onDelete("SET NULL");
+    });
+  }
+}
+
+export async function down(knex: Knex): Promise<void> {
+  const hasSubscriberCol = await knex.schema.hasColumn(TableName.Certificate, "pkiSubscriberId");
+  if (hasSubscriberCol) {
+    await knex.schema.alterTable(TableName.Certificate, (t) => {
+      t.dropColumn("pkiSubscriberId");
+    });
+  }
+
+  await knex.schema.dropTableIfExists(TableName.PkiSubscriber);
+  await dropOnUpdateTrigger(knex, TableName.PkiSubscriber);
+}

backend/src/db/schemas/certificates.ts

@@ -24,7 +24,8 @@ export const CertificatesSchema = z.object({
   caCertId: z.string().uuid(),
   certificateTemplateId: z.string().uuid().nullable().optional(),
   keyUsages: z.string().array().nullable().optional(),
-  extendedKeyUsages: z.string().array().nullable().optional()
+  extendedKeyUsages: z.string().array().nullable().optional(),
+  pkiSubscriberId: z.string().uuid().nullable().optional()
 });
 
 export type TCertificates = z.infer<typeof CertificatesSchema>;

backend/src/db/schemas/index.ts

@@ -69,6 +69,7 @@ export * from "./organizations";
 export * from "./pki-alerts";
 export * from "./pki-collection-items";
 export * from "./pki-collections";
+export * from "./pki-subscribers";
 export * from "./project-bots";
 export * from "./project-environments";
 export * from "./project-gateways";

backend/src/db/schemas/models.ts

@@ -21,6 +21,7 @@ export enum TableName {
   CertificateBody = "certificate_bodies",
   CertificateSecret = "certificate_secrets",
   CertificateTemplate = "certificate_templates",
+  PkiSubscriber = "pki_subscribers",
   PkiAlert = "pki_alerts",
   PkiCollection = "pki_collections",
   PkiCollectionItem = "pki_collection_items",

backend/src/db/schemas/pki-subscribers.ts

@@ -0,0 +1,27 @@
+// Code generated by automation script, DO NOT EDIT.
+// Automated by pulling database and generating zod schema
+// To update. Just run npm run generate:schema
+// Written by akhilmhdh.
+
+import { z } from "zod";
+
+import { TImmutableDBKeys } from "./models";
+
+export const PkiSubscribersSchema = z.object({
+  id: z.string().uuid(),
+  createdAt: z.date(),
+  updatedAt: z.date(),
+  projectId: z.string(),
+  caId: z.string().uuid().nullable().optional(),
+  name: z.string(),
+  commonName: z.string(),
+  subjectAlternativeNames: z.string().array(),
+  ttl: z.string(),
+  keyUsages: z.string().array(),
+  extendedKeyUsages: z.string().array(),
+  status: z.string()
+});
+
+export type TPkiSubscribers = z.infer<typeof PkiSubscribersSchema>;
+export type TPkiSubscribersInsert = Omit<z.input<typeof PkiSubscribersSchema>, TImmutableDBKeys>;
+export type TPkiSubscribersUpdate = Partial<Omit<z.input<typeof PkiSubscribersSchema>, TImmutableDBKeys>>;

backend/src/ee/routes/v1/ssh-host-router.ts

@@ -73,7 +73,7 @@ export const registerSshHostRouter = async (server: FastifyZodProvider) => {
     },
     onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
     handler: async (req) => {
-      const host = await server.services.sshHost.getSshHost({
+      const host = await server.services.sshHost.getSshHostById({
         sshHostId: req.params.sshHostId,
         actor: req.permission.type,
         actorId: req.permission.id,

backend/src/ee/services/audit-log/audit-log-types.ts

@@ -19,7 +19,7 @@ import { TProjectPermission } from "@app/lib/types";
 import { AppConnection } from "@app/services/app-connection/app-connection-enums";
 import { TCreateAppConnectionDTO, TUpdateAppConnectionDTO } from "@app/services/app-connection/app-connection-types";
 import { ActorType } from "@app/services/auth/auth-type";
-import { CertKeyAlgorithm } from "@app/services/certificate/certificate-types";
+import { CertExtendedKeyUsage, CertKeyAlgorithm, CertKeyUsage } from "@app/services/certificate/certificate-types";
 import { CaStatus } from "@app/services/certificate-authority/certificate-authority-types";
 import { TIdentityTrustedIp } from "@app/services/identity/identity-types";
 import { TAllowedFields } from "@app/services/identity-ldap-auth/identity-ldap-auth-types";
@@ -254,6 +254,13 @@ export enum EventType {
   GET_PKI_COLLECTION_ITEMS = "get-pki-collection-items",
   ADD_PKI_COLLECTION_ITEM = "add-pki-collection-item",
   DELETE_PKI_COLLECTION_ITEM = "delete-pki-collection-item",
+  CREATE_PKI_SUBSCRIBER = "create-pki-subscriber",
+  UPDATE_PKI_SUBSCRIBER = "update-pki-subscriber",
+  DELETE_PKI_SUBSCRIBER = "delete-pki-subscriber",
+  GET_PKI_SUBSCRIBER = "get-pki-subscriber",
+  ISSUE_PKI_SUBSCRIBER_CERT = "issue-pki-subscriber-cert",
+  SIGN_PKI_SUBSCRIBER_CERT = "sign-pki-subscriber-cert",
+  LIST_PKI_SUBSCRIBER_CERTS = "list-pki-subscriber-certs",
   CREATE_KMS = "create-kms",
   UPDATE_KMS = "update-kms",
   DELETE_KMS = "delete-kms",
@@ -1965,6 +1972,77 @@ interface DeletePkiCollectionItem {
   };
 }
 
+interface CreatePkiSubscriber {
+  type: EventType.CREATE_PKI_SUBSCRIBER;
+  metadata: {
+    pkiSubscriberId: string;
+    caId?: string;
+    name: string;
+    commonName: string;
+    ttl: string;
+    subjectAlternativeNames: string[];
+    keyUsages: CertKeyUsage[];
+    extendedKeyUsages: CertExtendedKeyUsage[];
+  };
+}
+
+interface UpdatePkiSubscriber {
+  type: EventType.UPDATE_PKI_SUBSCRIBER;
+  metadata: {
+    pkiSubscriberId: string;
+    caId?: string;
+    name?: string;
+    commonName?: string;
+    ttl?: string;
+    subjectAlternativeNames?: string[];
+    keyUsages?: CertKeyUsage[];
+    extendedKeyUsages?: CertExtendedKeyUsage[];
+  };
+}
+
+interface DeletePkiSubscriber {
+  type: EventType.DELETE_PKI_SUBSCRIBER;
+  metadata: {
+    pkiSubscriberId: string;
+    name: string;
+  };
+}
+
+interface GetPkiSubscriber {
+  type: EventType.GET_PKI_SUBSCRIBER;
+  metadata: {
+    pkiSubscriberId: string;
+    name: string;
+  };
+}
+
+interface IssuePkiSubscriberCert {
+  type: EventType.ISSUE_PKI_SUBSCRIBER_CERT;
+  metadata: {
+    subscriberId: string;
+    name: string;
+    serialNumber: string;
+  };
+}
+
+interface SignPkiSubscriberCert {
+  type: EventType.SIGN_PKI_SUBSCRIBER_CERT;
+  metadata: {
+    subscriberId: string;
+    name: string;
+    serialNumber: string;
+  };
+}
+
+interface ListPkiSubscriberCerts {
+  type: EventType.LIST_PKI_SUBSCRIBER_CERTS;
+  metadata: {
+    subscriberId: string;
+    name: string;
+    projectId: string;
+  };
+}
+
 interface CreateKmsEvent {
   type: EventType.CREATE_KMS;
   metadata: {
@@ -2928,6 +3006,13 @@ export type Event =
   | GetPkiCollectionItems
   | AddPkiCollectionItem
   | DeletePkiCollectionItem
+  | CreatePkiSubscriber
+  | UpdatePkiSubscriber
+  | DeletePkiSubscriber
+  | GetPkiSubscriber
+  | IssuePkiSubscriberCert
+  | SignPkiSubscriberCert
+  | ListPkiSubscriberCerts
   | CreateKmsEvent
   | UpdateKmsEvent
   | DeleteKmsEvent

backend/src/ee/services/permission/default-roles.ts

@@ -9,6 +9,7 @@ import {
   ProjectPermissionIdentityActions,
   ProjectPermissionKmipActions,
   ProjectPermissionMemberActions,
+  ProjectPermissionPkiSubscriberActions,
   ProjectPermissionSecretActions,
   ProjectPermissionSecretRotationActions,
   ProjectPermissionSecretSyncActions,
@@ -76,6 +77,18 @@ const buildAdminPermissionRules = () => {
     ProjectPermissionSub.SshHosts
   );
 
+  can(
+    [
+      ProjectPermissionPkiSubscriberActions.Edit,
+      ProjectPermissionPkiSubscriberActions.Read,
+      ProjectPermissionPkiSubscriberActions.Create,
+      ProjectPermissionPkiSubscriberActions.Delete,
+      ProjectPermissionPkiSubscriberActions.IssueCert,
+      ProjectPermissionPkiSubscriberActions.ListCerts
+    ],
+    ProjectPermissionSub.PkiSubscribers
+  );
+
   can(
     [
       ProjectPermissionMemberActions.Create,
@@ -338,6 +351,7 @@ const buildMemberPermissionRules = () => {
   can([ProjectPermissionActions.Read], ProjectPermissionSub.SshCertificateTemplates);
 
   can([ProjectPermissionSshHostActions.Read], ProjectPermissionSub.SshHosts);
+  can([ProjectPermissionPkiSubscriberActions.Read], ProjectPermissionSub.PkiSubscribers);
 
   can(
     [

backend/src/ee/services/permission/project-permission.ts

@@ -87,6 +87,15 @@ export enum ProjectPermissionSshHostActions {
   IssueHostCert = "issue-host-cert"
 }
 
+export enum ProjectPermissionPkiSubscriberActions {
+  Read = "read",
+  Create = "create",
+  Edit = "edit",
+  Delete = "delete",
+  IssueCert = "issue-cert",
+  ListCerts = "list-certs"
+}
+
 export enum ProjectPermissionSecretSyncActions {
   Read = "read",
   Create = "create",
@@ -143,6 +152,7 @@ export enum ProjectPermissionSub {
   SshCertificateTemplates = "ssh-certificate-templates",
   SshHosts = "ssh-hosts",
   SshHostGroups = "ssh-host-groups",
+  PkiSubscribers = "pki-subscribers",
   PkiAlerts = "pki-alerts",
   PkiCollections = "pki-collections",
   Kms = "kms",
@@ -190,6 +200,11 @@ export type SshHostSubjectFields = {
   hostname: string;
 };
 
+export type PkiSubscriberSubjectFields = {
+  name: string;
+  // (dangtony98): consider adding [commonName] as a subject field in the future
+};
+
 export type ProjectPermissionSet =
   | [
       ProjectPermissionSecretActions,
@@ -249,6 +264,13 @@ export type ProjectPermissionSet =
       ProjectPermissionSshHostActions,
       ProjectPermissionSub.SshHosts | (ForcedSubject<ProjectPermissionSub.SshHosts> & SshHostSubjectFields)
     ]
+  | [
+      ProjectPermissionPkiSubscriberActions,
+      (
+        | ProjectPermissionSub.PkiSubscribers
+        | (ForcedSubject<ProjectPermissionSub.PkiSubscribers> & PkiSubscriberSubjectFields)
+      )
+    ]
   | [ProjectPermissionActions, ProjectPermissionSub.SshHostGroups]
   | [ProjectPermissionActions, ProjectPermissionSub.PkiAlerts]
   | [ProjectPermissionActions, ProjectPermissionSub.PkiCollections]
@@ -399,6 +421,21 @@ const SshHostConditionSchema = z
   })
   .partial();
 
+const PkiSubscriberConditionSchema = z
+  .object({
+    name: z.union([
+      z.string(),
+      z
+        .object({
+          [PermissionConditionOperators.$EQ]: PermissionConditionSchema[PermissionConditionOperators.$EQ],
+          [PermissionConditionOperators.$GLOB]: PermissionConditionSchema[PermissionConditionOperators.$GLOB],
+          [PermissionConditionOperators.$IN]: PermissionConditionSchema[PermissionConditionOperators.$IN]
+        })
+        .partial()
+    ])
+  })
+  .partial();
+
 const GeneralPermissionSchema = [
   z.object({
     subject: z.literal(ProjectPermissionSub.SecretApproval).describe("The entity this permission pertains to."),
@@ -663,6 +700,16 @@ export const ProjectPermissionV2Schema = z.discriminatedUnion("subject", [
       "When specified, only matching conditions will be allowed to access given resource."
     ).optional()
   }),
+  z.object({
+    subject: z.literal(ProjectPermissionSub.PkiSubscribers).describe("The entity this permission pertains to."),
+    action: CASL_ACTION_SCHEMA_NATIVE_ENUM(ProjectPermissionPkiSubscriberActions).describe(
+      "Describe what action an entity can take."
+    ),
+    inverted: z.boolean().optional().describe("Whether rule allows or forbids."),
+    conditions: PkiSubscriberConditionSchema.describe(
+      "When specified, only matching conditions will be allowed to access given resource."
+    ).optional()
+  }),
   z.object({
     subject: z.literal(ProjectPermissionSub.SecretRotation).describe("The entity this permission pertains to."),
     inverted: z.boolean().optional().describe("Whether rule allows or forbids."),

backend/src/ee/services/ssh-host-group/ssh-host-group-service.ts

@@ -186,13 +186,42 @@ export const sshHostGroupServiceFactory = ({
       });
 
     const updatedSshHostGroup = await sshHostGroupDAL.transaction(async (tx) => {
-      await sshHostGroupDAL.updateById(
-        sshHostGroupId,
-        {
-          name
-        },
-        tx
-      );
+      if (name && name !== sshHostGroup.name) {
+        // (dangtony98): room to optimize check to ensure that
+        // the SSH host group name is unique across the whole org
+        const project = await projectDAL.findById(sshHostGroup.projectId, tx);
+        if (!project) throw new NotFoundError({ message: `Project with ID '${sshHostGroup.projectId}' not found` });
+        const projects = await projectDAL.find(
+          {
+            orgId: project.orgId
+          },
+          { tx }
+        );
+
+        const existingSshHostGroup = await sshHostGroupDAL.find(
+          {
+            name,
+            $in: {
+              projectId: projects.map((p) => p.id)
+            }
+          },
+          { tx }
+        );
+
+        if (existingSshHostGroup.length) {
+          throw new BadRequestError({
+            message: `SSH host group with name '${name}' already exists in the organization`
+          });
+        }
+        await sshHostGroupDAL.updateById(
+          sshHostGroupId,
+          {
+            name
+          },
+          tx
+        );
+      }
+
       if (loginMappings) {
         await sshHostLoginUserDAL.delete({ sshHostGroupId: sshHostGroup.id }, tx);
         if (loginMappings.length) {

backend/src/ee/services/ssh-host/ssh-host-service.ts

@@ -335,7 +335,7 @@ export const sshHostServiceFactory = ({
     return host;
   };
 
-  const getSshHost = async ({ sshHostId, actorId, actorAuthMethod, actor, actorOrgId }: TGetSshHostDTO) => {
+  const getSshHostById = async ({ sshHostId, actorId, actorAuthMethod, actor, actorOrgId }: TGetSshHostDTO) => {
     const host = await sshHostDAL.findSshHostByIdWithLoginMappings(sshHostId);
     if (!host) {
       throw new NotFoundError({
@@ -631,7 +631,7 @@ export const sshHostServiceFactory = ({
     createSshHost,
     updateSshHost,
     deleteSshHost,
-    getSshHost,
+    getSshHostById,
     issueSshHostUserCert,
     issueSshHostHostCert,
     getSshHostUserCaPk,

backend/src/lib/api-docs/constants.ts

@@ -46,6 +46,7 @@ export enum ApiDocsTags {
   PkiCertificateTemplates = "PKI Certificate Templates",
   PkiCertificateCollections = "PKI Certificate Collections",
   PkiAlerting = "PKI Alerting",
+  PkiSubscribers = "PKI Subscribers",
   SshCertificates = "SSH Certificates",
   SshCertificateAuthorities = "SSH Certificate Authorities",
   SshCertificateTemplates = "SSH Certificate Templates",
@@ -639,6 +640,9 @@ export const PROJECTS = {
     commonName: "The common name of the certificate to filter by.",
     offset: "The offset to start from. If you enter 10, it will start from the 10th certificate.",
     limit: "The number of certificates to return."
+  },
+  LIST_PKI_SUBSCRIBERS: {
+    projectId: "The ID of the project to list PKI subscribers for."
   }
 } as const;
 
@@ -1731,6 +1735,67 @@ export const ALERTS = {
   }
 };
 
+export const PKI_SUBSCRIBERS = {
+  GET: {
+    subscriberName: "The name of the PKI subscriber to get.",
+    projectId: "The ID of the project to get the PKI subscriber for."
+  },
+  CREATE: {
+    projectId: "The ID of the project to create the PKI subscriber in.",
+    caId: "The ID of the CA that will issue certificates for the PKI subscriber.",
+    name: "The name of the PKI subscriber.",
+    commonName: "The common name (CN) to be used on certificates issued for this subscriber.",
+    status: "The status of the PKI subscriber. This can be one of active or disabled.",
+    ttl: "The time to live for the certificates issued for this subscriber such as 1m, 1h, 1d, 1y, ...",
+    subjectAlternativeNames:
+      "A list of Subject Alternative Names (SANs) to be used on certificates issued for this subscriber; these can be host names or email addresses.",
+    keyUsages: "The key usage extension to be used on certificates issued for this subscriber.",
+    extendedKeyUsages: "The extended key usage extension to be used on certificates issued for this subscriber."
+  },
+  UPDATE: {
+    projectId: "The ID of the project to update the PKI subscriber in.",
+    subscriberName: "The name of the PKI subscriber to update.",
+    caId: "The ID of the CA that will issue certificates for the PKI subscriber to update to.",
+    name: "The name of the PKI subscriber to update to.",
+    commonName: "The common name (CN) to be used on certificates issued for this subscriber to update to.",
+    status: "The status of the PKI subscriber to update to. This can be one of active or disabled.",
+    ttl: "The time to live for the certificates issued for this subscriber such as 1m, 1h, 1d, 1y, ...",
+    subjectAlternativeNames:
+      "A comma-delimited list of Subject Alternative Names (SANs) to be used on certificates issued for this subscriber; these can be host names or email addresses.",
+    keyUsages: "The key usage extension to be used on certificates issued for this subscriber to update to.",
+    extendedKeyUsages:
+      "The extended key usage extension to be used on certificates issued for this subscriber to update to."
+  },
+  DELETE: {
+    subscriberName: "The name of the PKI subscriber to delete.",
+    projectId: "The ID of the project of the PKI subscriber to delete."
+  },
+  ISSUE_CERT: {
+    subscriberName: "The name of the PKI subscriber to issue the certificate for.",
+    projectId: "The ID of the project of the PKI subscriber to issue the certificate for.",
+    certificate: "The issued certificate.",
+    issuingCaCertificate: "The certificate of the issuing CA.",
+    certificateChain: "The certificate chain of the issued certificate.",
+    privateKey: "The private key of the issued certificate.",
+    serialNumber: "The serial number of the issued certificate."
+  },
+  SIGN_CERT: {
+    subscriberName: "The name of the PKI subscriber to sign the certificate for.",
+    projectId: "The ID of the project of the PKI subscriber to sign the certificate for.",
+    csr: "The CSR to be used to sign the certificate.",
+    certificate: "The signed certificate.",
+    issuingCaCertificate: "The certificate of the issuing CA.",
+    certificateChain: "The certificate chain of the signed certificate.",
+    serialNumber: "The serial number of the signed certificate."
+  },
+  LIST_CERTS: {
+    subscriberName: "The name of the PKI subscriber to list the certificates for.",
+    projectId: "The ID of the project of the PKI subscriber to list the certificates for.",
+    offset: "The offset to start from.",
+    limit: "The number of certificates to return."
+  }
+};
+
 export const PKI_COLLECTIONS = {
   CREATE: {
     projectId: "The ID of the project to create the PKI collection in.",

backend/src/server/routes/index.ts

@@ -197,6 +197,8 @@ import { pkiAlertServiceFactory } from "@app/services/pki-alert/pki-alert-servic
 import { pkiCollectionDALFactory } from "@app/services/pki-collection/pki-collection-dal";
 import { pkiCollectionItemDALFactory } from "@app/services/pki-collection/pki-collection-item-dal";
 import { pkiCollectionServiceFactory } from "@app/services/pki-collection/pki-collection-service";
+import { pkiSubscriberDALFactory } from "@app/services/pki-subscriber/pki-subscriber-dal";
+import { pkiSubscriberServiceFactory } from "@app/services/pki-subscriber/pki-subscriber-service";
 import { projectDALFactory } from "@app/services/project/project-dal";
 import { projectQueueFactory } from "@app/services/project/project-queue";
 import { projectServiceFactory } from "@app/services/project/project-service";
@@ -828,6 +830,7 @@ export const registerRoutes = async (
   const pkiAlertDAL = pkiAlertDALFactory(db);
   const pkiCollectionDAL = pkiCollectionDALFactory(db);
   const pkiCollectionItemDAL = pkiCollectionItemDALFactory(db);
+  const pkiSubscriberDAL = pkiSubscriberDALFactory(db);
 
   const certificateService = certificateServiceFactory({
     certificateDAL,
@@ -962,6 +965,20 @@ export const registerRoutes = async (
     projectDAL
   });
 
+  const pkiSubscriberService = pkiSubscriberServiceFactory({
+    pkiSubscriberDAL,
+    certificateAuthorityDAL,
+    certificateAuthorityCertDAL,
+    certificateAuthoritySecretDAL,
+    certificateAuthorityCrlDAL,
+    certificateDAL,
+    certificateBodyDAL,
+    certificateSecretDAL,
+    projectDAL,
+    kmsService,
+    permissionService
+  });
+
   const projectTemplateService = projectTemplateServiceFactory({
     licenseService,
     permissionService,
@@ -1059,6 +1076,7 @@ export const registerRoutes = async (
     projectRoleDAL,
     folderDAL,
     licenseService,
+    pkiSubscriberDAL,
     certificateAuthorityDAL,
     certificateDAL,
     pkiAlertDAL,
@@ -1745,6 +1763,7 @@ export const registerRoutes = async (
     certificateEst: certificateEstService,
     pkiAlert: pkiAlertService,
     pkiCollection: pkiCollectionService,
+    pkiSubscriber: pkiSubscriberService,
     secretScanning: secretScanningService,
     license: licenseService,
     trustedIp: trustedIpService,

backend/src/server/routes/v1/index.ts

@@ -33,6 +33,7 @@ import { registerOrgRouter } from "./organization-router";
 import { registerPasswordRouter } from "./password-router";
 import { registerPkiAlertRouter } from "./pki-alert-router";
 import { registerPkiCollectionRouter } from "./pki-collection-router";
+import { registerPkiSubscriberRouter } from "./pki-subscriber-router";
 import { registerProjectEnvRouter } from "./project-env-router";
 import { registerProjectKeyRouter } from "./project-key-router";
 import { registerProjectMembershipRouter } from "./project-membership-router";
@@ -105,6 +106,7 @@ export const registerV1Routes = async (server: FastifyZodProvider) => {
       await pkiRouter.register(registerCertificateTemplateRouter, { prefix: "/certificate-templates" });
       await pkiRouter.register(registerPkiAlertRouter, { prefix: "/alerts" });
       await pkiRouter.register(registerPkiCollectionRouter, { prefix: "/collections" });
+      await pkiRouter.register(registerPkiSubscriberRouter, { prefix: "/subscribers" });
     },
     { prefix: "/pki" }
   );

backend/src/server/routes/v1/pki-subscriber-router.ts

@@ -0,0 +1,478 @@
+import { z } from "zod";
+
+import { CertificatesSchema } from "@app/db/schemas";
+import { EventType } from "@app/ee/services/audit-log/audit-log-types";
+import { ApiDocsTags, PKI_SUBSCRIBERS } from "@app/lib/api-docs";
+import { ms } from "@app/lib/ms";
+import { readLimit, writeLimit } from "@app/server/config/rateLimiter";
+import { slugSchema } from "@app/server/lib/schemas";
+import { getTelemetryDistinctId } from "@app/server/lib/telemetry";
+import { verifyAuth } from "@app/server/plugins/auth/verify-auth";
+import { AuthMode } from "@app/services/auth/auth-type";
+import { CertExtendedKeyUsage, CertKeyUsage } from "@app/services/certificate/certificate-types";
+import { validateAltNameField } from "@app/services/certificate-authority/certificate-authority-validators";
+import { sanitizedPkiSubscriber } from "@app/services/pki-subscriber/pki-subscriber-schema";
+import { PkiSubscriberStatus } from "@app/services/pki-subscriber/pki-subscriber-types";
+import { PostHogEventTypes } from "@app/services/telemetry/telemetry-types";
+
+export const registerPkiSubscriberRouter = async (server: FastifyZodProvider) => {
+  server.route({
+    method: "GET",
+    url: "/:subscriberName",
+    config: {
+      rateLimit: readLimit
+    },
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "Get PKI Subscriber",
+      params: z.object({
+        subscriberName: z.string().describe(PKI_SUBSCRIBERS.GET.subscriberName)
+      }),
+      querystring: z.object({
+        projectId: z.string().describe(PKI_SUBSCRIBERS.GET.projectId)
+      }),
+      response: {
+        200: sanitizedPkiSubscriber
+      }
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    handler: async (req) => {
+      const subscriber = await server.services.pkiSubscriber.getSubscriber({
+        subscriberName: req.params.subscriberName,
+        projectId: req.query.projectId,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId
+      });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: subscriber.projectId,
+        event: {
+          type: EventType.GET_PKI_SUBSCRIBER,
+          metadata: {
+            pkiSubscriberId: subscriber.id,
+            name: subscriber.name
+          }
+        }
+      });
+
+      return subscriber;
+    }
+  });
+
+  server.route({
+    method: "POST",
+    url: "/",
+    config: {
+      rateLimit: writeLimit
+    },
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "Create PKI Subscriber",
+      body: z.object({
+        projectId: z.string().trim().describe(PKI_SUBSCRIBERS.CREATE.projectId),
+        caId: z
+          .string()
+          .trim()
+          .uuid("CA ID must be a valid UUID")
+          .min(1, "CA ID is required")
+          .describe(PKI_SUBSCRIBERS.CREATE.caId),
+        name: slugSchema({ min: 1, max: 64, field: "name" }).describe(PKI_SUBSCRIBERS.CREATE.name),
+        commonName: z.string().trim().min(1).describe(PKI_SUBSCRIBERS.CREATE.commonName),
+        status: z
+          .nativeEnum(PkiSubscriberStatus)
+          .default(PkiSubscriberStatus.ACTIVE)
+          .describe(PKI_SUBSCRIBERS.CREATE.status),
+        ttl: z
+          .string()
+          .trim()
+          .refine((val) => ms(val) > 0, "TTL must be a positive number")
+          .describe(PKI_SUBSCRIBERS.CREATE.ttl),
+        subjectAlternativeNames: validateAltNameField
+          .array()
+          .default([])
+          .transform((arr) => Array.from(new Set(arr)))
+          .describe(PKI_SUBSCRIBERS.CREATE.subjectAlternativeNames),
+        keyUsages: z
+          .nativeEnum(CertKeyUsage)
+          .array()
+          .default([CertKeyUsage.DIGITAL_SIGNATURE, CertKeyUsage.KEY_ENCIPHERMENT])
+          .transform((arr) => Array.from(new Set(arr)))
+          .describe(PKI_SUBSCRIBERS.CREATE.keyUsages),
+        extendedKeyUsages: z
+          .nativeEnum(CertExtendedKeyUsage)
+          .array()
+          .default([])
+          .transform((arr) => Array.from(new Set(arr)))
+          .describe(PKI_SUBSCRIBERS.CREATE.extendedKeyUsages)
+      }),
+      response: {
+        200: sanitizedPkiSubscriber
+      }
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    handler: async (req) => {
+      const subscriber = await server.services.pkiSubscriber.createSubscriber({
+        ...req.body,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId
+      });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: subscriber.projectId,
+        event: {
+          type: EventType.CREATE_PKI_SUBSCRIBER,
+          metadata: {
+            pkiSubscriberId: subscriber.id,
+            caId: subscriber.caId ?? undefined,
+            name: subscriber.name,
+            commonName: subscriber.commonName,
+            ttl: subscriber.ttl,
+            subjectAlternativeNames: subscriber.subjectAlternativeNames,
+            keyUsages: subscriber.keyUsages as CertKeyUsage[],
+            extendedKeyUsages: subscriber.extendedKeyUsages as CertExtendedKeyUsage[]
+          }
+        }
+      });
+
+      return subscriber;
+    }
+  });
+
+  server.route({
+    method: "PATCH",
+    url: "/:subscriberName",
+    config: {
+      rateLimit: writeLimit
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "Update PKI Subscriber",
+      params: z.object({
+        subscriberName: z.string().trim().describe(PKI_SUBSCRIBERS.UPDATE.subscriberName)
+      }),
+      body: z.object({
+        projectId: z.string().trim().describe(PKI_SUBSCRIBERS.UPDATE.projectId),
+        caId: z
+          .string()
+          .trim()
+          .uuid("CA ID must be a valid UUID")
+          .min(1, "CA ID is required")
+          .optional()
+          .describe(PKI_SUBSCRIBERS.UPDATE.caId),
+        name: slugSchema({ min: 1, max: 64, field: "name" }).describe(PKI_SUBSCRIBERS.UPDATE.name).optional(),
+        commonName: z.string().trim().min(1).describe(PKI_SUBSCRIBERS.UPDATE.commonName).optional(),
+        status: z.nativeEnum(PkiSubscriberStatus).optional().describe(PKI_SUBSCRIBERS.UPDATE.status),
+        subjectAlternativeNames: validateAltNameField
+          .array()
+          .optional()
+          .describe(PKI_SUBSCRIBERS.UPDATE.subjectAlternativeNames),
+        ttl: z
+          .string()
+          .trim()
+          .refine((val) => ms(val) > 0, "TTL must be a positive number")
+          .optional()
+          .describe(PKI_SUBSCRIBERS.UPDATE.ttl),
+        keyUsages: z
+          .nativeEnum(CertKeyUsage)
+          .array()
+          .transform((arr) => Array.from(new Set(arr)))
+          .optional()
+          .describe(PKI_SUBSCRIBERS.UPDATE.keyUsages),
+        extendedKeyUsages: z
+          .nativeEnum(CertExtendedKeyUsage)
+          .array()
+          .transform((arr) => Array.from(new Set(arr)))
+          .optional()
+          .describe(PKI_SUBSCRIBERS.UPDATE.extendedKeyUsages)
+      }),
+      response: {
+        200: sanitizedPkiSubscriber
+      }
+    },
+    handler: async (req) => {
+      const subscriber = await server.services.pkiSubscriber.updateSubscriber({
+        subscriberName: req.params.subscriberName,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId,
+        ...req.body
+      });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: subscriber.projectId,
+        event: {
+          type: EventType.UPDATE_PKI_SUBSCRIBER,
+          metadata: {
+            pkiSubscriberId: subscriber.id,
+            caId: subscriber.caId ?? undefined,
+            name: subscriber.name,
+            commonName: subscriber.commonName,
+            ttl: subscriber.ttl,
+            subjectAlternativeNames: subscriber.subjectAlternativeNames,
+            keyUsages: subscriber.keyUsages as CertKeyUsage[],
+            extendedKeyUsages: subscriber.extendedKeyUsages as CertExtendedKeyUsage[]
+          }
+        }
+      });
+
+      return subscriber;
+    }
+  });
+
+  server.route({
+    method: "DELETE",
+    url: "/:subscriberName",
+    config: {
+      rateLimit: writeLimit
+    },
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "Delete PKI Subscriber",
+      params: z.object({
+        subscriberName: z.string().describe(PKI_SUBSCRIBERS.DELETE.subscriberName)
+      }),
+      body: z.object({
+        projectId: z.string().trim().describe(PKI_SUBSCRIBERS.DELETE.projectId)
+      }),
+      response: {
+        200: sanitizedPkiSubscriber
+      }
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    handler: async (req) => {
+      const subscriber = await server.services.pkiSubscriber.deleteSubscriber({
+        subscriberName: req.params.subscriberName,
+        projectId: req.body.projectId,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId
+      });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: subscriber.projectId,
+        event: {
+          type: EventType.DELETE_PKI_SUBSCRIBER,
+          metadata: {
+            pkiSubscriberId: subscriber.id,
+            name: subscriber.name
+          }
+        }
+      });
+
+      return subscriber;
+    }
+  });
+
+  server.route({
+    method: "POST",
+    url: "/:subscriberName/issue-certificate",
+    config: {
+      rateLimit: writeLimit
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "Issue certificate",
+      params: z.object({
+        subscriberName: z.string().describe(PKI_SUBSCRIBERS.ISSUE_CERT.subscriberName)
+      }),
+      body: z.object({
+        projectId: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.projectId)
+      }),
+      response: {
+        200: z.object({
+          certificate: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.certificate),
+          issuingCaCertificate: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.issuingCaCertificate),
+          certificateChain: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.certificateChain),
+          privateKey: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.privateKey),
+          serialNumber: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.serialNumber)
+        })
+      }
+    },
+    handler: async (req) => {
+      const { certificate, certificateChain, issuingCaCertificate, privateKey, serialNumber, subscriber } =
+        await server.services.pkiSubscriber.issueSubscriberCert({
+          subscriberName: req.params.subscriberName,
+          projectId: req.body.projectId,
+          actor: req.permission.type,
+          actorId: req.permission.id,
+          actorAuthMethod: req.permission.authMethod,
+          actorOrgId: req.permission.orgId
+        });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: subscriber.projectId,
+        event: {
+          type: EventType.ISSUE_PKI_SUBSCRIBER_CERT,
+          metadata: {
+            subscriberId: subscriber.id,
+            name: subscriber.name,
+            serialNumber
+          }
+        }
+      });
+
+      await server.services.telemetry.sendPostHogEvents({
+        event: PostHogEventTypes.IssueCert,
+        distinctId: getTelemetryDistinctId(req),
+        properties: {
+          subscriberId: subscriber.id,
+          commonName: subscriber.commonName,
+          ...req.auditLogInfo
+        }
+      });
+
+      return {
+        certificate,
+        certificateChain,
+        issuingCaCertificate,
+        privateKey,
+        serialNumber
+      };
+    }
+  });
+
+  server.route({
+    method: "POST",
+    url: "/:subscriberName/sign-certificate",
+    config: {
+      rateLimit: writeLimit
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "Sign certificate",
+      params: z.object({
+        subscriberName: z.string().describe(PKI_SUBSCRIBERS.SIGN_CERT.subscriberName)
+      }),
+      body: z.object({
+        projectId: z.string().trim().describe(PKI_SUBSCRIBERS.SIGN_CERT.projectId),
+        csr: z.string().trim().min(1).max(3000).describe(PKI_SUBSCRIBERS.SIGN_CERT.csr)
+      }),
+      response: {
+        200: z.object({
+          certificate: z.string().trim().describe(PKI_SUBSCRIBERS.SIGN_CERT.certificate),
+          issuingCaCertificate: z.string().trim().describe(PKI_SUBSCRIBERS.SIGN_CERT.issuingCaCertificate),
+          certificateChain: z.string().trim().describe(PKI_SUBSCRIBERS.SIGN_CERT.certificateChain),
+          serialNumber: z.string().trim().describe(PKI_SUBSCRIBERS.ISSUE_CERT.serialNumber)
+        })
+      }
+    },
+    handler: async (req) => {
+      const { certificate, certificateChain, issuingCaCertificate, serialNumber, subscriber } =
+        await server.services.pkiSubscriber.signSubscriberCert({
+          subscriberName: req.params.subscriberName,
+          projectId: req.body.projectId,
+          csr: req.body.csr,
+          actor: req.permission.type,
+          actorId: req.permission.id,
+          actorAuthMethod: req.permission.authMethod,
+          actorOrgId: req.permission.orgId
+        });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: subscriber.projectId,
+        event: {
+          type: EventType.SIGN_PKI_SUBSCRIBER_CERT,
+          metadata: {
+            subscriberId: subscriber.id,
+            name: subscriber.name,
+            serialNumber
+          }
+        }
+      });
+
+      await server.services.telemetry.sendPostHogEvents({
+        event: PostHogEventTypes.SignCert,
+        distinctId: getTelemetryDistinctId(req),
+        properties: {
+          subscriberId: subscriber.id,
+          commonName: subscriber.commonName,
+          ...req.auditLogInfo
+        }
+      });
+
+      return {
+        certificate,
+        certificateChain,
+        issuingCaCertificate,
+        serialNumber
+      };
+    }
+  });
+
+  server.route({
+    method: "GET",
+    url: "/:subscriberName/certificates",
+    config: {
+      rateLimit: readLimit
+    },
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      description: "List PKI Subscriber certificates",
+      params: z.object({
+        subscriberName: z.string().describe(PKI_SUBSCRIBERS.GET.subscriberName)
+      }),
+      querystring: z.object({
+        projectId: z.string().trim().describe(PKI_SUBSCRIBERS.LIST_CERTS.projectId),
+        offset: z.coerce.number().min(0).max(100).default(0).describe(PKI_SUBSCRIBERS.LIST_CERTS.offset),
+        limit: z.coerce.number().min(1).max(100).default(25).describe(PKI_SUBSCRIBERS.LIST_CERTS.limit)
+      }),
+      response: {
+        200: z.object({
+          certificates: z.array(CertificatesSchema),
+          totalCount: z.number()
+        })
+      }
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    handler: async (req) => {
+      const { totalCount, certificates } = await server.services.pkiSubscriber.listSubscriberCerts({
+        subscriberName: req.params.subscriberName,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId,
+        ...req.query
+      });
+
+      await server.services.auditLog.createAuditLog({
+        ...req.auditLogInfo,
+        projectId: req.query.projectId,
+        event: {
+          type: EventType.LIST_PKI_SUBSCRIBER_CERTS,
+          metadata: {
+            subscriberId: req.params.subscriberName,
+            name: req.params.subscriberName,
+            projectId: req.query.projectId
+          }
+        }
+      });
+
+      return {
+        certificates,
+        totalCount
+      };
+    }
+  });
+};

backend/src/server/routes/v2/project-router.ts

@@ -24,6 +24,7 @@ import { verifyAuth } from "@app/server/plugins/auth/verify-auth";
 import { AuthMode } from "@app/services/auth/auth-type";
 import { CaStatus } from "@app/services/certificate-authority/certificate-authority-types";
 import { sanitizedCertificateTemplate } from "@app/services/certificate-template/certificate-template-schema";
+import { sanitizedPkiSubscriber } from "@app/services/pki-subscriber/pki-subscriber-schema";
 import { ProjectFilterType } from "@app/services/project/project-types";
 import { PostHogEventTypes } from "@app/services/telemetry/telemetry-types";
 
@@ -490,6 +491,38 @@ export const registerProjectRouter = async (server: FastifyZodProvider) => {
     }
   });
 
+  server.route({
+    method: "GET",
+    url: "/:projectId/pki-subscribers",
+    config: {
+      rateLimit: readLimit
+    },
+    schema: {
+      hide: false,
+      tags: [ApiDocsTags.PkiSubscribers],
+      params: z.object({
+        projectId: z.string().trim().describe(PROJECTS.LIST_PKI_SUBSCRIBERS.projectId)
+      }),
+      response: {
+        200: z.object({
+          subscribers: z.array(sanitizedPkiSubscriber)
+        })
+      }
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    handler: async (req) => {
+      const subscribers = await server.services.project.listProjectPkiSubscribers({
+        actorId: req.permission.id,
+        actorOrgId: req.permission.orgId,
+        actorAuthMethod: req.permission.authMethod,
+        actor: req.permission.type,
+        projectId: req.params.projectId
+      });
+
+      return { subscribers };
+    }
+  });
+
   server.route({
     method: "GET",
     url: "/:projectId/certificate-templates",
@@ -628,6 +661,8 @@ export const registerProjectRouter = async (server: FastifyZodProvider) => {
       rateLimit: readLimit
     },
     schema: {
+      hide: false,
+      tags: [ApiDocsTags.SshHosts],
       params: z.object({
         projectId: z.string().trim().describe(PROJECTS.LIST_SSH_HOSTS.projectId)
       }),
@@ -666,6 +701,8 @@ export const registerProjectRouter = async (server: FastifyZodProvider) => {
       rateLimit: readLimit
     },
     schema: {
+      hide: false,
+      tags: [ApiDocsTags.SshHostGroups],
       params: z.object({
         projectId: z.string().trim().describe(PROJECTS.LIST_SSH_HOST_GROUPS.projectId)
       }),

backend/src/services/certificate-authority/certificate-authority-service.ts

@@ -1169,7 +1169,7 @@ export const certificateAuthorityServiceFactory = ({
       ProjectPermissionSub.Certificates
     );
 
-    if (ca.status === CaStatus.DISABLED) throw new BadRequestError({ message: "CA is disabled" });
+    if (ca.status !== CaStatus.ACTIVE) throw new BadRequestError({ message: "CA is not active" });
     if (!ca.activeCaCertId) throw new BadRequestError({ message: "CA does not have a certificate installed" });
     if (ca.requireTemplateForIssuance && !certificateTemplate) {
       throw new BadRequestError({ message: "Certificate template is required for issuance" });
@@ -1520,7 +1520,7 @@ export const certificateAuthorityServiceFactory = ({
       );
     }
 
-    if (ca.status === CaStatus.DISABLED) throw new BadRequestError({ message: "CA is disabled" });
+    if (ca.status !== CaStatus.ACTIVE) throw new BadRequestError({ message: "CA is not active" });
     if (!ca.activeCaCertId) throw new BadRequestError({ message: "CA does not have a certificate installed" });
     if (ca.requireTemplateForIssuance && !certificateTemplate) {
       throw new BadRequestError({ message: "Certificate template is required for issuance" });

backend/src/services/certificate-authority/certificate-authority-validators.ts

@@ -10,6 +10,18 @@ const isValidDate = (dateString: string) => {
 
 export const validateCaDateField = z.string().trim().refine(isValidDate, { message: "Invalid date format" });
 
+export const validateAltNameField = z
+  .string()
+  .trim()
+  .refine(
+    (name) => {
+      return isFQDN(name) || z.string().email().safeParse(name).success || isValidIp(name);
+    },
+    {
+      message: "SAN must be a valid hostname, email address, or IP address"
+    }
+  );
+
 export const validateAltNamesField = z
   .string()
   .trim()

backend/src/services/certificate/certificate-dal.ts

@@ -44,8 +44,27 @@ export const certificateDALFactory = (db: TDbClient) => {
     }
   };
 
+  const countCertificatesForPkiSubscriber = async (subscriberId: string) => {
+    try {
+      interface CountResult {
+        count: string;
+      }
+
+      const query = db
+        .replicaNode()(TableName.Certificate)
+        .where(`${TableName.Certificate}.pkiSubscriberId`, subscriberId);
+
+      const count = await query.count("*").first();
+
+      return parseInt((count as unknown as CountResult).count || "0", 10);
+    } catch (error) {
+      throw new DatabaseError({ error, name: "Count all subscriber certificates" });
+    }
+  };
+
   return {
     ...certificateOrm,
-    countCertificatesInProject
+    countCertificatesInProject,
+    countCertificatesForPkiSubscriber
   };
 };

backend/src/services/pki-subscriber/pki-subscriber-dal.ts

@@ -0,0 +1,10 @@
+import { TDbClient } from "@app/db";
+import { TableName } from "@app/db/schemas";
+import { ormify } from "@app/lib/knex";
+
+export type TPkiSubscriberDALFactory = ReturnType<typeof pkiSubscriberDALFactory>;
+
+export const pkiSubscriberDALFactory = (db: TDbClient) => {
+  const pkiSubscriberOrm = ormify(db, TableName.PkiSubscriber);
+  return pkiSubscriberOrm;
+};

backend/src/services/pki-subscriber/pki-subscriber-schema.ts

@@ -0,0 +1,14 @@
+import { PkiSubscribersSchema } from "@app/db/schemas";
+
+export const sanitizedPkiSubscriber = PkiSubscribersSchema.pick({
+  id: true,
+  projectId: true,
+  caId: true,
+  name: true,
+  commonName: true,
+  status: true,
+  subjectAlternativeNames: true,
+  ttl: true,
+  keyUsages: true,
+  extendedKeyUsages: true
+});

backend/src/services/pki-subscriber/pki-subscriber-service.ts

@@ -0,0 +1,805 @@
+/* eslint-disable no-bitwise */
+import { ForbiddenError, subject } from "@casl/ability";
+import * as x509 from "@peculiar/x509";
+import crypto, { KeyObject } from "crypto";
+import { z } from "zod";
+
+import { ActionProjectType } from "@app/db/schemas";
+import { TCertificateAuthorityCrlDALFactory } from "@app/ee/services/certificate-authority-crl/certificate-authority-crl-dal";
+import { TPermissionServiceFactory } from "@app/ee/services/permission/permission-service";
+import {
+  ProjectPermissionPkiSubscriberActions,
+  ProjectPermissionSub
+} from "@app/ee/services/permission/project-permission";
+import { getConfig } from "@app/lib/config/env";
+import { BadRequestError, NotFoundError } from "@app/lib/errors";
+import { ms } from "@app/lib/ms";
+import { isFQDN } from "@app/lib/validator/validate-url";
+import { TCertificateBodyDALFactory } from "@app/services/certificate/certificate-body-dal";
+import { TCertificateDALFactory } from "@app/services/certificate/certificate-dal";
+import { TCertificateSecretDALFactory } from "@app/services/certificate/certificate-secret-dal";
+import {
+  CertExtendedKeyUsage,
+  CertExtendedKeyUsageOIDToName,
+  CertKeyAlgorithm,
+  CertKeyUsage,
+  CertStatus
+} from "@app/services/certificate/certificate-types";
+import { TCertificateAuthorityCertDALFactory } from "@app/services/certificate-authority/certificate-authority-cert-dal";
+import { TCertificateAuthorityDALFactory } from "@app/services/certificate-authority/certificate-authority-dal";
+import {
+  createSerialNumber,
+  getCaCertChain,
+  getCaCredentials,
+  keyAlgorithmToAlgCfg,
+  parseDistinguishedName
+} from "@app/services/certificate-authority/certificate-authority-fns";
+import { TCertificateAuthoritySecretDALFactory } from "@app/services/certificate-authority/certificate-authority-secret-dal";
+import { CaStatus } from "@app/services/certificate-authority/certificate-authority-types";
+import { TKmsServiceFactory } from "@app/services/kms/kms-service";
+import { TPkiSubscriberDALFactory } from "@app/services/pki-subscriber/pki-subscriber-dal";
+import { TProjectDALFactory } from "@app/services/project/project-dal";
+import { getProjectKmsCertificateKeyId } from "@app/services/project/project-fns";
+
+import {
+  PkiSubscriberStatus,
+  TCreatePkiSubscriberDTO,
+  TDeletePkiSubscriberDTO,
+  TGetPkiSubscriberDTO,
+  TIssuePkiSubscriberCertDTO,
+  TListPkiSubscriberCertsDTO,
+  TSignPkiSubscriberCertDTO,
+  TUpdatePkiSubscriberDTO
+} from "./pki-subscriber-types";
+
+type TPkiSubscriberServiceFactoryDep = {
+  pkiSubscriberDAL: Pick<
+    TPkiSubscriberDALFactory,
+    "create" | "findById" | "updateById" | "deleteById" | "transaction" | "find" | "findOne"
+  >;
+  certificateAuthorityDAL: Pick<TCertificateAuthorityDALFactory, "findById">;
+  certificateAuthorityCertDAL: Pick<TCertificateAuthorityCertDALFactory, "findById">;
+  certificateAuthoritySecretDAL: Pick<TCertificateAuthoritySecretDALFactory, "findOne">;
+  certificateAuthorityCrlDAL: Pick<TCertificateAuthorityCrlDALFactory, "findOne">;
+  certificateDAL: Pick<TCertificateDALFactory, "create" | "transaction" | "countCertificatesForPkiSubscriber" | "find">;
+  certificateBodyDAL: Pick<TCertificateBodyDALFactory, "create">;
+  certificateSecretDAL: Pick<TCertificateSecretDALFactory, "create">;
+  projectDAL: Pick<TProjectDALFactory, "findOne" | "updateById" | "transaction" | "findById" | "find">;
+  kmsService: Pick<TKmsServiceFactory, "generateKmsKey" | "decryptWithKmsKey" | "encryptWithKmsKey">;
+  permissionService: Pick<TPermissionServiceFactory, "getProjectPermission">;
+};
+
+export type TPkiSubscriberServiceFactory = ReturnType<typeof pkiSubscriberServiceFactory>;
+
+export const pkiSubscriberServiceFactory = ({
+  pkiSubscriberDAL,
+  certificateAuthorityDAL,
+  certificateAuthorityCertDAL,
+  certificateAuthoritySecretDAL,
+  certificateAuthorityCrlDAL,
+  certificateDAL,
+  certificateBodyDAL,
+  certificateSecretDAL,
+  projectDAL,
+  kmsService,
+  permissionService
+}: TPkiSubscriberServiceFactoryDep) => {
+  const createSubscriber = async ({
+    name,
+    commonName,
+    status,
+    caId,
+    ttl,
+    subjectAlternativeNames,
+    keyUsages,
+    extendedKeyUsages,
+    projectId,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TCreatePkiSubscriberDTO) => {
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.Create,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name
+      })
+    );
+
+    const newSubscriber = await pkiSubscriberDAL.create({
+      caId,
+      projectId,
+      name,
+      commonName,
+      status,
+      ttl,
+      subjectAlternativeNames,
+      keyUsages,
+      extendedKeyUsages
+    });
+
+    return newSubscriber;
+  };
+
+  const getSubscriber = async ({
+    subscriberName,
+    projectId,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TGetPkiSubscriberDTO) => {
+    const subscriber = await pkiSubscriberDAL.findOne({
+      name: subscriberName,
+      projectId
+    });
+
+    if (!subscriber) throw new NotFoundError({ message: `PKI subscriber named '${subscriberName}' not found` });
+
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: subscriber.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.Read,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name: subscriber.name
+      })
+    );
+
+    return subscriber;
+  };
+
+  const updateSubscriber = async ({
+    subscriberName,
+    projectId,
+    name,
+    commonName,
+    status,
+    caId,
+    ttl,
+    subjectAlternativeNames,
+    keyUsages,
+    extendedKeyUsages,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TUpdatePkiSubscriberDTO) => {
+    const subscriber = await pkiSubscriberDAL.findOne({
+      name: subscriberName,
+      projectId
+    });
+    if (!subscriber) throw new NotFoundError({ message: `PKI subscriber named '${subscriberName}' not found` });
+
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: subscriber.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.Edit,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name: subscriber.name
+      })
+    );
+
+    const updatedSubscriber = await pkiSubscriberDAL.updateById(subscriber.id, {
+      caId,
+      name,
+      commonName,
+      status,
+      ttl,
+      subjectAlternativeNames,
+      keyUsages,
+      extendedKeyUsages
+    });
+
+    return updatedSubscriber;
+  };
+
+  const deleteSubscriber = async ({
+    subscriberName,
+    projectId,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TDeletePkiSubscriberDTO) => {
+    const subscriber = await pkiSubscriberDAL.findOne({
+      name: subscriberName,
+      projectId
+    });
+    if (!subscriber) throw new NotFoundError({ message: `PKI subscriber named '${subscriberName}' not found` });
+
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: subscriber.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.Delete,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name: subscriber.name
+      })
+    );
+
+    await pkiSubscriberDAL.deleteById(subscriber.id);
+
+    return subscriber;
+  };
+
+  const issueSubscriberCert = async ({
+    subscriberName,
+    projectId,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TIssuePkiSubscriberCertDTO) => {
+    const subscriber = await pkiSubscriberDAL.findOne({
+      name: subscriberName,
+      projectId
+    });
+    if (!subscriber) throw new NotFoundError({ message: `PKI subscriber named '${subscriberName}' not found` });
+    if (!subscriber.caId) throw new BadRequestError({ message: "Subscriber does not have an assigned issuing CA" });
+
+    const ca = await certificateAuthorityDAL.findById(subscriber.caId);
+    if (!ca) throw new NotFoundError({ message: `CA with ID '${subscriber.caId}' not found` });
+
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: ca.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.IssueCert,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name: subscriber.name
+      })
+    );
+
+    if (subscriber.status !== PkiSubscriberStatus.ACTIVE)
+      throw new BadRequestError({ message: "Subscriber is not active" });
+    if (ca.status !== CaStatus.ACTIVE) throw new BadRequestError({ message: "CA is not active" });
+    if (!ca.activeCaCertId) throw new BadRequestError({ message: "CA does not have a certificate installed" });
+    if (ca.requireTemplateForIssuance) {
+      throw new BadRequestError({ message: "Certificate template is required for issuance" });
+    }
+    const caCert = await certificateAuthorityCertDAL.findById(ca.activeCaCertId);
+
+    const certificateManagerKmsId = await getProjectKmsCertificateKeyId({
+      projectId: ca.projectId,
+      projectDAL,
+      kmsService
+    });
+    const kmsDecryptor = await kmsService.decryptWithKmsKey({
+      kmsId: certificateManagerKmsId
+    });
+
+    const decryptedCaCert = await kmsDecryptor({
+      cipherTextBlob: caCert.encryptedCertificate
+    });
+
+    const caCertObj = new x509.X509Certificate(decryptedCaCert);
+    const notBeforeDate = new Date();
+    const notAfterDate = new Date(new Date().getTime() + ms(subscriber.ttl));
+    const caCertNotBeforeDate = new Date(caCertObj.notBefore);
+    const caCertNotAfterDate = new Date(caCertObj.notAfter);
+
+    // check not before constraint
+    if (notBeforeDate < caCertNotBeforeDate) {
+      throw new BadRequestError({ message: "notBefore date is before CA certificate's notBefore date" });
+    }
+
+    // check not after constraint
+    if (notAfterDate > caCertNotAfterDate) {
+      throw new BadRequestError({ message: "notAfter date is after CA certificate's notAfter date" });
+    }
+
+    const alg = keyAlgorithmToAlgCfg(ca.keyAlgorithm as CertKeyAlgorithm);
+    const leafKeys = await crypto.subtle.generateKey(alg, true, ["sign", "verify"]);
+
+    const csrObj = await x509.Pkcs10CertificateRequestGenerator.create({
+      name: `CN=${subscriber.commonName}`,
+      keys: leafKeys,
+      signingAlgorithm: alg,
+      extensions: [
+        // eslint-disable-next-line no-bitwise
+        new x509.KeyUsagesExtension(x509.KeyUsageFlags.digitalSignature | x509.KeyUsageFlags.keyEncipherment)
+      ],
+      attributes: [new x509.ChallengePasswordAttribute("password")]
+    });
+
+    const { caPrivateKey, caSecret } = await getCaCredentials({
+      caId: ca.id,
+      certificateAuthorityDAL,
+      certificateAuthoritySecretDAL,
+      projectDAL,
+      kmsService
+    });
+
+    const caCrl = await certificateAuthorityCrlDAL.findOne({ caSecretId: caSecret.id });
+    const appCfg = getConfig();
+
+    const distributionPointUrl = `${appCfg.SITE_URL}/api/v1/pki/crl/${caCrl.id}/der`;
+    const caIssuerUrl = `${appCfg.SITE_URL}/api/v1/pki/ca/${ca.id}/certificates/${caCert.id}/der`;
+
+    const extensions: x509.Extension[] = [
+      new x509.BasicConstraintsExtension(false),
+      new x509.CRLDistributionPointsExtension([distributionPointUrl]),
+      await x509.AuthorityKeyIdentifierExtension.create(caCertObj, false),
+      await x509.SubjectKeyIdentifierExtension.create(csrObj.publicKey),
+      new x509.AuthorityInfoAccessExtension({
+        caIssuers: new x509.GeneralName("url", caIssuerUrl)
+      }),
+      new x509.CertificatePolicyExtension(["2.5.29.32.0"]) // anyPolicy
+    ];
+
+    const selectedKeyUsages = subscriber.keyUsages as CertKeyUsage[];
+    const keyUsagesBitValue = selectedKeyUsages.reduce((accum, keyUsage) => accum | x509.KeyUsageFlags[keyUsage], 0);
+    if (keyUsagesBitValue) {
+      extensions.push(new x509.KeyUsagesExtension(keyUsagesBitValue, true));
+    }
+
+    if (subscriber.extendedKeyUsages.length) {
+      const extendedKeyUsagesExtension = new x509.ExtendedKeyUsageExtension(
+        subscriber.extendedKeyUsages.map((eku) => x509.ExtendedKeyUsage[eku as CertExtendedKeyUsage]),
+        true
+      );
+      extensions.push(extendedKeyUsagesExtension);
+    }
+
+    let altNamesArray: { type: "email" | "dns"; value: string }[] = [];
+
+    if (subscriber.subjectAlternativeNames?.length) {
+      altNamesArray = subscriber.subjectAlternativeNames.map((altName) => {
+        if (z.string().email().safeParse(altName).success) {
+          return { type: "email", value: altName };
+        }
+
+        if (isFQDN(altName, { allow_wildcard: true })) {
+          return { type: "dns", value: altName };
+        }
+
+        throw new BadRequestError({ message: `Invalid SAN entry: ${altName}` });
+      });
+
+      const altNamesExtension = new x509.SubjectAlternativeNameExtension(altNamesArray, false);
+      extensions.push(altNamesExtension);
+    }
+
+    const serialNumber = createSerialNumber();
+    const leafCert = await x509.X509CertificateGenerator.create({
+      serialNumber,
+      subject: csrObj.subject,
+      issuer: caCertObj.subject,
+      notBefore: notBeforeDate,
+      notAfter: notAfterDate,
+      signingKey: caPrivateKey,
+      publicKey: csrObj.publicKey,
+      signingAlgorithm: alg,
+      extensions
+    });
+
+    const skLeafObj = KeyObject.from(leafKeys.privateKey);
+    const skLeaf = skLeafObj.export({ format: "pem", type: "pkcs8" }) as string;
+
+    const kmsEncryptor = await kmsService.encryptWithKmsKey({
+      kmsId: certificateManagerKmsId
+    });
+    const { cipherTextBlob: encryptedCertificate } = await kmsEncryptor({
+      plainText: Buffer.from(new Uint8Array(leafCert.rawData))
+    });
+    const { cipherTextBlob: encryptedPrivateKey } = await kmsEncryptor({
+      plainText: Buffer.from(skLeaf)
+    });
+
+    const { caCert: issuingCaCertificate, caCertChain } = await getCaCertChain({
+      caCertId: caCert.id,
+      certificateAuthorityDAL,
+      certificateAuthorityCertDAL,
+      projectDAL,
+      kmsService
+    });
+
+    const certificateChainPem = `${issuingCaCertificate}\n${caCertChain}`.trim();
+
+    const { cipherTextBlob: encryptedCertificateChain } = await kmsEncryptor({
+      plainText: Buffer.from(certificateChainPem)
+    });
+
+    await certificateDAL.transaction(async (tx) => {
+      const cert = await certificateDAL.create(
+        {
+          caId: ca.id,
+          caCertId: caCert.id,
+          pkiSubscriberId: subscriber.id,
+          status: CertStatus.ACTIVE,
+          friendlyName: subscriber.commonName,
+          commonName: subscriber.commonName,
+          altNames: subscriber.subjectAlternativeNames.join(","),
+          serialNumber,
+          notBefore: notBeforeDate,
+          notAfter: notAfterDate,
+          keyUsages: selectedKeyUsages,
+          extendedKeyUsages: subscriber.extendedKeyUsages as CertExtendedKeyUsage[]
+        },
+        tx
+      );
+
+      await certificateBodyDAL.create(
+        {
+          certId: cert.id,
+          encryptedCertificate,
+          encryptedCertificateChain
+        },
+        tx
+      );
+
+      await certificateSecretDAL.create(
+        {
+          certId: cert.id,
+          encryptedPrivateKey
+        },
+        tx
+      );
+    });
+
+    return {
+      certificate: leafCert.toString("pem"),
+      certificateChain: certificateChainPem,
+      issuingCaCertificate,
+      privateKey: skLeaf,
+      serialNumber,
+      ca,
+      subscriber
+    };
+  };
+
+  const signSubscriberCert = async ({
+    subscriberName,
+    projectId,
+    csr,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TSignPkiSubscriberCertDTO) => {
+    const appCfg = getConfig();
+    const subscriber = await pkiSubscriberDAL.findOne({
+      name: subscriberName,
+      projectId
+    });
+    if (!subscriber) throw new NotFoundError({ message: `PKI subscriber named '${subscriberName}' not found` });
+    if (!subscriber.caId) throw new BadRequestError({ message: "Subscriber does not have an assigned issuing CA" });
+
+    const ca = await certificateAuthorityDAL.findById(subscriber.caId);
+    if (!ca) throw new NotFoundError({ message: `CA with ID '${subscriber.caId}' not found` });
+
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: ca.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.IssueCert,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name: subscriber.name
+      })
+    );
+
+    if (subscriber.status !== PkiSubscriberStatus.ACTIVE)
+      throw new BadRequestError({ message: "Subscriber is not active" });
+    if (ca.status !== CaStatus.ACTIVE) throw new BadRequestError({ message: "CA is not active" });
+    if (!ca.activeCaCertId) throw new BadRequestError({ message: "CA does not have a certificate installed" });
+    if (ca.requireTemplateForIssuance) {
+      throw new BadRequestError({ message: "Certificate template is required for issuance" });
+    }
+    const caCert = await certificateAuthorityCertDAL.findById(ca.activeCaCertId);
+
+    const certificateManagerKmsId = await getProjectKmsCertificateKeyId({
+      projectId: ca.projectId,
+      projectDAL,
+      kmsService
+    });
+    const kmsDecryptor = await kmsService.decryptWithKmsKey({
+      kmsId: certificateManagerKmsId
+    });
+
+    const decryptedCaCert = await kmsDecryptor({
+      cipherTextBlob: caCert.encryptedCertificate
+    });
+
+    const caCertObj = new x509.X509Certificate(decryptedCaCert);
+    const notBeforeDate = new Date();
+    const notAfterDate = new Date(new Date().getTime() + ms(subscriber.ttl));
+    const caCertNotBeforeDate = new Date(caCertObj.notBefore);
+    const caCertNotAfterDate = new Date(caCertObj.notAfter);
+
+    // check not before constraint
+    if (notBeforeDate < caCertNotBeforeDate) {
+      throw new BadRequestError({ message: "notBefore date is before CA certificate's notBefore date" });
+    }
+
+    // check not after constraint
+    if (notAfterDate > caCertNotAfterDate) {
+      throw new BadRequestError({ message: "notAfter date is after CA certificate's notAfter date" });
+    }
+
+    const alg = keyAlgorithmToAlgCfg(ca.keyAlgorithm as CertKeyAlgorithm);
+
+    const csrObj = new x509.Pkcs10CertificateRequest(csr);
+
+    const dn = parseDistinguishedName(csrObj.subject);
+    const cn = dn.commonName;
+    if (cn !== subscriber.commonName) {
+      throw new BadRequestError({ message: "Common name (CN) in the CSR does not match the subscriber's common name" });
+    }
+
+    const { caPrivateKey, caSecret } = await getCaCredentials({
+      caId: ca.id,
+      certificateAuthorityDAL,
+      certificateAuthoritySecretDAL,
+      projectDAL,
+      kmsService
+    });
+
+    const caCrl = await certificateAuthorityCrlDAL.findOne({ caSecretId: caSecret.id });
+    const distributionPointUrl = `${appCfg.SITE_URL}/api/v1/pki/crl/${caCrl.id}/der`;
+    const caIssuerUrl = `${appCfg.SITE_URL}/api/v1/pki/ca/${ca.id}/certificates/${caCert.id}/der`;
+
+    const extensions: x509.Extension[] = [
+      new x509.BasicConstraintsExtension(false),
+      await x509.AuthorityKeyIdentifierExtension.create(caCertObj, false),
+      await x509.SubjectKeyIdentifierExtension.create(csrObj.publicKey),
+      new x509.CRLDistributionPointsExtension([distributionPointUrl]),
+      new x509.AuthorityInfoAccessExtension({
+        caIssuers: new x509.GeneralName("url", caIssuerUrl)
+      }),
+      new x509.CertificatePolicyExtension(["2.5.29.32.0"]) // anyPolicy
+    ];
+
+    // handle key usages
+    const csrKeyUsageExtension = csrObj.getExtension("2.5.29.15") as x509.KeyUsagesExtension;
+    let csrKeyUsages: CertKeyUsage[] = [];
+    if (csrKeyUsageExtension) {
+      csrKeyUsages = Object.values(CertKeyUsage).filter(
+        (keyUsage) => (x509.KeyUsageFlags[keyUsage] & csrKeyUsageExtension.usages) !== 0
+      );
+    }
+
+    const selectedKeyUsages = subscriber.keyUsages as CertKeyUsage[];
+
+    if (csrKeyUsages.some((keyUsage) => !selectedKeyUsages.includes(keyUsage))) {
+      throw new BadRequestError({
+        message: "Invalid key usage value based on subscriber's specified key usages"
+      });
+    }
+
+    const keyUsagesBitValue = selectedKeyUsages.reduce((accum, keyUsage) => accum | x509.KeyUsageFlags[keyUsage], 0);
+    if (keyUsagesBitValue) {
+      extensions.push(new x509.KeyUsagesExtension(keyUsagesBitValue, true));
+    }
+
+    // handle extended key usages
+    const csrExtendedKeyUsageExtension = csrObj.getExtension("2.5.29.37") as x509.ExtendedKeyUsageExtension;
+    let csrExtendedKeyUsages: CertExtendedKeyUsage[] = [];
+    if (csrExtendedKeyUsageExtension) {
+      csrExtendedKeyUsages = csrExtendedKeyUsageExtension.usages.map(
+        (ekuOid) => CertExtendedKeyUsageOIDToName[ekuOid as string]
+      );
+    }
+
+    const selectedExtendedKeyUsages = subscriber.extendedKeyUsages as CertExtendedKeyUsage[];
+    if (csrExtendedKeyUsages.some((eku) => !selectedExtendedKeyUsages.includes(eku))) {
+      throw new BadRequestError({
+        message: "Invalid extended key usage value based on subscriber's specified extended key usages"
+      });
+    }
+
+    if (selectedExtendedKeyUsages.length) {
+      extensions.push(
+        new x509.ExtendedKeyUsageExtension(
+          selectedExtendedKeyUsages.map((eku) => x509.ExtendedKeyUsage[eku]),
+          true
+        )
+      );
+    }
+
+    // attempt to read from CSR if altNames is not explicitly provided
+    let altNamesArray: {
+      type: "email" | "dns";
+      value: string;
+    }[] = [];
+
+    const sanExtension = csrObj.extensions.find((ext) => ext.type === "2.5.29.17");
+    if (sanExtension) {
+      const sanNames = new x509.GeneralNames(sanExtension.value);
+
+      altNamesArray = sanNames.items
+        .filter((value) => value.type === "email" || value.type === "dns")
+        .map((name) => ({
+          type: name.type as "email" | "dns",
+          value: name.value
+        }));
+    }
+
+    if (
+      altNamesArray
+        .map((altName) => altName.value)
+        .some((altName) => !subscriber.subjectAlternativeNames.includes(altName))
+    ) {
+      throw new BadRequestError({
+        message: "Invalid subject alternative name based on subscriber's specified subject alternative names"
+      });
+    }
+
+    if (altNamesArray.length) {
+      const altNamesExtension = new x509.SubjectAlternativeNameExtension(altNamesArray, false);
+      extensions.push(altNamesExtension);
+    }
+
+    const serialNumber = createSerialNumber();
+    const leafCert = await x509.X509CertificateGenerator.create({
+      serialNumber,
+      subject: csrObj.subject,
+      issuer: caCertObj.subject,
+      notBefore: notBeforeDate,
+      notAfter: notAfterDate,
+      signingKey: caPrivateKey,
+      publicKey: csrObj.publicKey,
+      signingAlgorithm: alg,
+      extensions
+    });
+
+    const kmsEncryptor = await kmsService.encryptWithKmsKey({
+      kmsId: certificateManagerKmsId
+    });
+    const { cipherTextBlob: encryptedCertificate } = await kmsEncryptor({
+      plainText: Buffer.from(new Uint8Array(leafCert.rawData))
+    });
+
+    const { caCert: issuingCaCertificate, caCertChain } = await getCaCertChain({
+      caCertId: ca.activeCaCertId,
+      certificateAuthorityDAL,
+      certificateAuthorityCertDAL,
+      projectDAL,
+      kmsService
+    });
+
+    const certificateChainPem = `${issuingCaCertificate}\n${caCertChain}`.trim();
+
+    const { cipherTextBlob: encryptedCertificateChain } = await kmsEncryptor({
+      plainText: Buffer.from(certificateChainPem)
+    });
+
+    await certificateDAL.transaction(async (tx) => {
+      const cert = await certificateDAL.create(
+        {
+          caId: ca.id,
+          caCertId: caCert.id,
+          pkiSubscriberId: subscriber.id,
+          status: CertStatus.ACTIVE,
+          friendlyName: subscriber.commonName,
+          commonName: subscriber.commonName,
+          altNames: subscriber.subjectAlternativeNames.join(","),
+          serialNumber,
+          notBefore: notBeforeDate,
+          notAfter: notAfterDate,
+          keyUsages: selectedKeyUsages,
+          extendedKeyUsages: selectedExtendedKeyUsages
+        },
+        tx
+      );
+
+      await certificateBodyDAL.create(
+        {
+          certId: cert.id,
+          encryptedCertificate,
+          encryptedCertificateChain
+        },
+        tx
+      );
+
+      return cert;
+    });
+
+    return {
+      certificate: leafCert.toString("pem"),
+      certificateChain: `${issuingCaCertificate}\n${caCertChain}`.trim(),
+      issuingCaCertificate,
+      serialNumber,
+      ca,
+      commonName: subscriber.commonName,
+      subscriber
+    };
+  };
+
+  const listSubscriberCerts = async ({
+    subscriberName,
+    projectId,
+    offset,
+    limit,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TListPkiSubscriberCertsDTO) => {
+    const subscriber = await pkiSubscriberDAL.findOne({
+      name: subscriberName,
+      projectId
+    });
+    if (!subscriber) throw new NotFoundError({ message: `PKI subscriber named '${subscriberName}' not found` });
+
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: subscriber.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionPkiSubscriberActions.ListCerts,
+      subject(ProjectPermissionSub.PkiSubscribers, {
+        name: subscriber.name
+      })
+    );
+
+    const certificates = await certificateDAL.find(
+      {
+        pkiSubscriberId: subscriber.id
+      },
+      { offset, limit, sort: [["updatedAt", "desc"]] }
+    );
+
+    const count = await certificateDAL.countCertificatesForPkiSubscriber(subscriber.id);
+
+    return {
+      certificates,
+      totalCount: count
+    };
+  };
+
+  return {
+    createSubscriber,
+    getSubscriber,
+    updateSubscriber,
+    deleteSubscriber,
+    issueSubscriberCert,
+    signSubscriberCert,
+    listSubscriberCerts
+  };
+};

backend/src/services/pki-subscriber/pki-subscriber-types.ts

@@ -0,0 +1,54 @@
+import { TProjectPermission } from "@app/lib/types";
+
+import { CertExtendedKeyUsage, CertKeyUsage } from "../certificate/certificate-types";
+
+export enum PkiSubscriberStatus {
+  ACTIVE = "active",
+  DISABLED = "disabled"
+}
+
+export type TCreatePkiSubscriberDTO = {
+  caId: string;
+  name: string;
+  commonName: string;
+  status: PkiSubscriberStatus;
+  ttl: string;
+  subjectAlternativeNames: string[];
+  keyUsages: CertKeyUsage[];
+  extendedKeyUsages: CertExtendedKeyUsage[];
+} & TProjectPermission;
+
+export type TGetPkiSubscriberDTO = {
+  subscriberName: string;
+} & TProjectPermission;
+
+export type TUpdatePkiSubscriberDTO = {
+  subscriberName: string;
+  caId?: string;
+  name?: string;
+  commonName?: string;
+  status?: PkiSubscriberStatus;
+  ttl?: string;
+  subjectAlternativeNames?: string[];
+  keyUsages?: CertKeyUsage[];
+  extendedKeyUsages?: CertExtendedKeyUsage[];
+} & TProjectPermission;
+
+export type TDeletePkiSubscriberDTO = {
+  subscriberName: string;
+} & TProjectPermission;
+
+export type TIssuePkiSubscriberCertDTO = {
+  subscriberName: string;
+} & TProjectPermission;
+
+export type TSignPkiSubscriberCertDTO = {
+  subscriberName: string;
+  csr: string;
+} & TProjectPermission;
+
+export type TListPkiSubscriberCertsDTO = {
+  subscriberName: string;
+  offset: number;
+  limit: number;
+} & TProjectPermission;

backend/src/services/project/project-service.ts

@@ -15,6 +15,7 @@ import { TPermissionServiceFactory } from "@app/ee/services/permission/permissio
 import {
   ProjectPermissionActions,
   ProjectPermissionCertificateActions,
+  ProjectPermissionPkiSubscriberActions,
   ProjectPermissionSecretActions,
   ProjectPermissionSshHostActions,
   ProjectPermissionSub
@@ -35,6 +36,7 @@ import { groupBy } from "@app/lib/fn";
 import { alphaNumericNanoId } from "@app/lib/nanoid";
 import { TProjectPermission } from "@app/lib/types";
 import { TQueueServiceFactory } from "@app/queue";
+import { TPkiSubscriberDALFactory } from "@app/services/pki-subscriber/pki-subscriber-dal";
 
 import { ActorType } from "../auth/auth-type";
 import { TCertificateDALFactory } from "../certificate/certificate-dal";
@@ -86,6 +88,7 @@ import {
   TListProjectCasDTO,
   TListProjectCertificateTemplatesDTO,
   TListProjectCertsDTO,
+  TListProjectPkiSubscribersDTO,
   TListProjectsDTO,
   TListProjectSshCasDTO,
   TListProjectSshCertificatesDTO,
@@ -145,6 +148,7 @@ type TProjectServiceFactoryDep = {
     "findById" | "findByIdWithWorkflowIntegrationDetails"
   >;
   projectUserMembershipRoleDAL: Pick<TProjectUserMembershipRoleDALFactory, "create">;
+  pkiSubscriberDAL: Pick<TPkiSubscriberDALFactory, "find">;
   certificateAuthorityDAL: Pick<TCertificateAuthorityDALFactory, "find">;
   certificateDAL: Pick<TCertificateDALFactory, "find" | "countCertificatesInProject">;
   certificateTemplateDAL: Pick<TCertificateTemplateDALFactory, "getCertTemplatesByProjectId">;
@@ -207,6 +211,7 @@ export const projectServiceFactory = ({
   certificateTemplateDAL,
   pkiCollectionDAL,
   pkiAlertDAL,
+  pkiSubscriberDAL,
   sshCertificateAuthorityDAL,
   sshCertificateAuthoritySecretDAL,
   sshCertificateDAL,
@@ -1057,6 +1062,45 @@ export const projectServiceFactory = ({
     };
   };
 
+  /**
+   * Return list of PKI subscribers for project
+   */
+  const listProjectPkiSubscribers = async ({
+    actorId,
+    actorOrgId,
+    actorAuthMethod,
+    actor,
+    projectId
+  }: TListProjectPkiSubscribersDTO) => {
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    const allowedSubscribers = [];
+
+    // (dangtony98): room to optimize
+    const subscribers = await pkiSubscriberDAL.find({ projectId });
+
+    for (const subscriber of subscribers) {
+      const canRead = permission.can(
+        ProjectPermissionPkiSubscriberActions.Read,
+        subject(ProjectPermissionSub.PkiSubscribers, {
+          name: subscriber.name
+        })
+      );
+      if (canRead) {
+        allowedSubscribers.push(subscriber);
+      }
+    }
+
+    return allowedSubscribers;
+  };
+
   /**
    * Return list of certificate templates for project
    */
@@ -1156,17 +1200,15 @@ export const projectServiceFactory = ({
     const hosts = await sshHostDAL.findSshHostsWithLoginMappings(projectId);
 
     for (const host of hosts) {
-      try {
-        ForbiddenError.from(permission).throwUnlessCan(
-          ProjectPermissionSshHostActions.Read,
-          subject(ProjectPermissionSub.SshHosts, {
-            hostname: host.hostname
-          })
-        );
+      const canRead = permission.can(
+        ProjectPermissionSshHostActions.Read,
+        subject(ProjectPermissionSub.SshHosts, {
+          hostname: host.hostname
+        })
+      );
 
+      if (canRead) {
         allowedHosts.push(host);
-      } catch {
-        // intentionally ignore projects where user lacks access
       }
     }
 
@@ -1930,6 +1972,7 @@ export const projectServiceFactory = ({
     listProjectSshCas,
     listProjectSshHosts,
     listProjectSshHostGroups,
+    listProjectPkiSubscribers,
     listProjectSshCertificates,
     listProjectSshCertificateTemplates,
     updateVersionLimit,

backend/src/services/project/project-types.ts

@@ -155,6 +155,7 @@ export type TListProjectCertificateTemplatesDTO = TProjectPermission;
 export type TListProjectSshCasDTO = TProjectPermission;
 export type TListProjectSshHostsDTO = TProjectPermission;
 export type TListProjectSshCertificateTemplatesDTO = TProjectPermission;
+export type TListProjectPkiSubscribersDTO = TProjectPermission;
 export type TListProjectSshCertificatesDTO = {
   offset: number;
   limit: number;

backend/src/services/telemetry/telemetry-types.ts

@@ -189,6 +189,7 @@ export type TSignCertificateEvent = {
   properties: {
     caId?: string;
     certificateTemplateId?: string;
+    subscriberId?: string;
     commonName: string;
     userAgent?: string;
   };
@@ -199,6 +200,7 @@ export type TIssueCertificateEvent = {
   properties: {
     caId?: string;
     certificateTemplateId?: string;
+    subscriberId?: string;
     commonName: string;
     userAgent?: string;
   };