make sure we delete invalid keys if they fail validation.

frontend/src/app/pages/encryption-manager/encryption-manager.component.ts

@@ -129,13 +129,12 @@ export class EncryptionManagerComponent implements OnInit {
       .then((content) => {
         let cryptoConfig = JSON.parse(content) as PouchdbCryptConfig
 
-        if(cryptoConfig.key && cryptoConfig.config){
-          return PouchdbCrypto.StoreCryptConfig(cryptoConfig)
-        } else {
-          //throw an error & notify user
+        if(!cryptoConfig.key || !cryptoConfig.config){
           this.importCustomFileError = "Invalid crypto configuration file"
           throw new Error(this.importCustomFileError)
         }
+
+        return PouchdbCrypto.StoreCryptConfig(cryptoConfig)
       })
       .then(() => {
         //go to step 2
@@ -156,13 +155,17 @@ export class EncryptionManagerComponent implements OnInit {
       })
       .catch((err) => {
         console.error(err)
-        //an error occurred while importing credential
-        const toastNotification = new ToastNotification()
-        toastNotification.type = ToastType.Error
-        toastNotification.message = "Provided encryption key does not match. Please try a different key"
-        toastNotification.autohide = false
-        this.toastService.show(toastNotification)
+        // delete invalid encryption key
         this.currentStep = 1
+        return PouchdbCrypto.DeleteCryptConfig(this.fastenDbService.current_user)
+          .then(() => {
+            //an error occurred while importing credential
+            const toastNotification = new ToastNotification()
+            toastNotification.type = ToastType.Error
+            toastNotification.message = "Provided encryption key does not match. Please try a different key"
+            toastNotification.autohide = false
+            this.toastService.show(toastNotification)
+          })
       })
   }
 

frontend/src/lib/database/plugins/crypto.ts

@@ -69,6 +69,10 @@ export class PouchdbCrypto {
     }
     return JSON.parse(cryptConfigStr) as PouchdbCryptConfig
   }
+  public static async DeleteCryptConfig(currentUser: string): Promise<void>{
+    const localDb = await PouchdbCrypto.localIdb()
+    return await localDb.delete('crypto',`encryption_data_${currentUser}`)
+  }
 
 
   public static async crypto(db, cryptConfig: PouchdbCryptConfig, options: PouchdbCryptoOptions = {}) {