Requested changes

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

@@ -0,0 +1,50 @@
+import crypto from "crypto";
+
+import { decryptAsymmetric, encryptAsymmetric } from "@app/lib/crypto";
+
+import { AddUserToWsDTO } from "./project-types";
+
+export const createWsMembers = ({ members, decryptKey, userPrivateKey }: AddUserToWsDTO) => {
+  const key = decryptAsymmetric({
+    ciphertext: decryptKey.encryptedKey,
+    nonce: decryptKey.nonce,
+    publicKey: decryptKey.sender.publicKey,
+    privateKey: userPrivateKey
+  });
+
+  const newWsMembers = members.map(({ orgMembershipId, userPublicKey, projectMembershipRole }) => {
+    const { ciphertext: inviteeCipherText, nonce: inviteeNonce } = encryptAsymmetric(
+      key,
+      userPublicKey,
+      userPrivateKey
+    );
+
+    return {
+      orgMembershipId,
+      projectRole: projectMembershipRole,
+      workspaceEncryptedKey: inviteeCipherText,
+      workspaceEncryptedNonce: inviteeNonce
+    };
+  });
+
+  return newWsMembers;
+};
+
+type TCreateProjectKeyDTO = {
+  publicKey: string;
+  privateKey: string;
+};
+
+export const createProjectKey = ({ publicKey, privateKey }: TCreateProjectKeyDTO) => {
+  // 3. Create a random key that we'll use as the project key.
+  const randomBytes = crypto.randomBytes(16).toString("hex");
+
+  // 4. Encrypt the project key with the users key pair.
+  const { ciphertext: encryptedProjectKey, nonce: encryptedProjectKeyIv } = encryptAsymmetric(
+    randomBytes,
+    publicKey,
+    privateKey
+  );
+
+  return { key: encryptedProjectKey, iv: encryptedProjectKeyIv };
+};