Specified key is not a valid size for this algorithm

[rushsteve1]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Indexers are not added to the Sonarr/Radarr that have been added, instead an error is thrown (see below).

Expected Behavior

Indexers should be added to Sonarr/Radarr.

Steps To Reproduce

1. Added Sonarr and Radarr as Apps
2. Added their API keys, copied from their settings
3. Set them to Full Sync or Add/Remove
4. Hit Sync App Indexers
5. Indexers in Sonarr/Radarr are not added, error below

Environment

- OS: Ubuntu 18.04
- Prowlarr: 0.2.0.1678
- Docker Install: 19.03.2
- Using Reverse Proxy: Yes, Apache
- Browser: Firefox 99

What branch are you running?

Develop

Trace Logs?

System.ArgumentException: Specified key is not a valid size for this algorithm. (Parameter 'rgbKey')
   at Internal.Cryptography.AesImplementation.CreateTransform(Byte[] rgbKey, Byte[] rgbIV, Boolean encrypting)
   at NzbDrone.Core.Security.ProtectionService.Protect(String text) in D:\a\1\s\src\NzbDrone.Core\Security\ProtectionService.cs:line 54
   at NzbDrone.Core.Download.DownloadMappingService.ConvertToProxyLink(Uri link, String serverUrl, Int32 indexerId, String file) in D:\a\1\s\src\NzbDrone.Core\Download\DownloadMappingService.cs:line 40
   at NzbDrone.Api.V1.Indexers.NewznabController.GetNewznabResponse(Int32 id, NewznabRequest request) in D:\a\1\s\src\Prowlarr.Api.V1\Indexers\NewznabController.cs:line 151
   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
   at Prowlarr.Http.Middleware.BufferingMiddleware.InvokeAsync(HttpContext context) in D:\a\1\s\src\Prowlarr.Http\Middleware\BufferingMiddleware.cs:line 28
   at Prowlarr.Http.Middleware.IfModifiedMiddleware.InvokeAsync(HttpContext context) in D:\a\1\s\src\Prowlarr.Http\Middleware\IfModifiedMiddleware.cs:line 41
   at Prowlarr.Http.Middleware.CacheHeaderMiddleware.InvokeAsync(HttpContext context) in D:\a\1\s\src\Prowlarr.Http\Middleware\CacheHeaderMiddleware.cs:line 33
   at Prowlarr.Http.Middleware.UrlBaseMiddleware.InvokeAsync(HttpContext context) in D:\a\1\s\src\Prowlarr.Http\Middleware\UrlBaseMiddleware.cs:line 27
   at Prowlarr.Http.Middleware.VersionMiddleware.InvokeAsync(HttpContext context) in D:\a\1\s\src\Prowlarr.Http\Middleware\VersionMiddleware.cs:line 28
   at Microsoft.AspNetCore.ResponseCompression.ResponseCompressionMiddleware.InvokeCore(HttpContext context)
   at Microsoft.AspNetCore.Authorization.Policy.AuthorizationMiddlewareResultHandler.HandleAsync(RequestDelegate next, HttpContext context, AuthorizationPolicy policy, PolicyAuthorizationResult authorizeResult)
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.<Invoke>g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task): Specified key is not a valid size for this algorithm. (Parameter 'rgbKey')

AB#3005

[bakerboy448]

Please provide trace logs. Just the error spew is not helpful nor valid for bug reports

See the Wiki link for how to get and provide trace logs that is within the bug report template.

[rushsteve1]

Sorry about that, here is the trace log file
prowlarr.trace.txt

[bakerboy448]

2022-04-18 20:16:52.4|Warn|HttpClient|HTTP Error - Res: [POST] https://rushsteve1.cronos.bysh.me/sonarr/api/v3/indexer: 500.InternalServerError
{
  "message": "Object reference not set to an instance of an object",

Sonarr sync issue is a Sonarr bug - fixed in develop; no ETA on the next main release
Sonarr/Sonarr@8d83b1d

---

2022-04-18 20:16:53.5|Warn|HttpClient|HTTP Error - Res: [POST] http://rushsteve1.cronos.bysh.me/radarr/api/v3/indexer: 400.BadRequest
[
  {
    "isWarning": false,
    "propertyName": "",
    "errorMessage": "Query successful, but no results in the configured categories were returned from your indexer. This may be an issue with the indexer or your indexer category settings.",
    "severity": "error"
  }
]

Radarr sync issues are not a bug. This is a support question. See the troubleshooting article.

• Prowlarr troubleshooting https://wiki.servarr.com/prowlarr/troubleshooting#arr-http-400-errors

---

2022-04-18 20:16:55.0|Error|Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware|An unhandled exception has occurred while executing the request.

[v0.2.0.1678] System.ArgumentException: Specified key is not a valid size for this algorithm. (Parameter 'rgbKey')

Context - https://gist.github.com/bakerboy448/e677fc74551883a6bce3cac3ce8cf83c

Prowlarr query when sync issue - this appears to be an issue with the response from TPB. Defer to @Qstick if this is a bug or not.

[rushsteve1]

I tried upgrading Sonarr to the develop branch version 3.0.7.1503
And I removed some possibly problematic indexes including TPB and RARBG

No luck, I am still having the same problems, neither Radarr or Sonarr ever gets the indexes. Trace attached.
prowlarr.trace.txt

[bakerboy448]

Looks like it's now just narrowed down to the key error now.

2022-04-18 20:50:39.1|Error|Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware|An unhandled exception has occurred while executing the request.

[v0.2.0.1678] System.ArgumentException: Specified key is not a valid size for this algorithm. (Parameter 'rgbKey')

[Qstick]

This happens as a result of using something other than a standard GUID as the apikey (which Prowlarr uses as the AES encryption key for download links), as AES keys can only be 128, 192, or 256 bits.

We'll have to generate and store a separate key which can't be edited to use for protecting links as it seems some people change their APIKey for deployment or something.