feat: replace private workspaces with private usernames (#1783)

packages/encryption/src/Domain/Username/PrivateUsername.ts

@@ -0,0 +1,19 @@
+import { PureCryptoInterface } from '@standardnotes/sncrypto-common'
+
+const PrivateUserNameV1 = 'StandardNotes-PrivateUsername-V1'
+
+export async function ComputePrivateUsername(
+  crypto: PureCryptoInterface,
+  usernameInput: string,
+): Promise<string | undefined> {
+  const result = await crypto.hmac256(
+    await crypto.sha256(PrivateUserNameV1),
+    await crypto.sha256(usernameInput.trim().toLowerCase()),
+  )
+
+  if (result == undefined) {
+    return undefined
+  }
+
+  return result
+}

packages/encryption/src/Domain/Workspace/PrivateWorkspace.ts

@@ -1,18 +0,0 @@
-import { PureCryptoInterface } from '@standardnotes/sncrypto-common'
-
-export async function ComputePrivateWorkspaceIdentifier(
-  crypto: PureCryptoInterface,
-  userphrase: string,
-  name: string,
-): Promise<string | undefined> {
-  const identifier = await crypto.hmac256(
-    await crypto.sha256(name.trim().toLowerCase()),
-    await crypto.sha256(userphrase.trim().toLowerCase()),
-  )
-
-  if (identifier == undefined) {
-    return undefined
-  }
-
-  return identifier
-}

packages/encryption/src/Domain/index.ts

@@ -34,4 +34,4 @@ export * from './Types/EncryptedParameters'
 export * from './Types/ItemAuthenticatedData'
 export * from './Types/LegacyAttachedData'
 export * from './Types/RootKeyEncryptedAuthenticatedData'
-export * from './Workspace/PrivateWorkspace'
+export * from './Username/PrivateUsername'