Fix basic cipher hash, and return error when bad passphrase &| key sent from basic backend.

Author: stephpy

src/Rezzza/Vaultage/Backend/Basic/Cipher.php

@@ -87,6 +87,6 @@ private function extractTokenFromMetadata(Metadata $metadata)
             $phrase .= ':'.$metadata->passphrase;
         }
 
-        return mhash(MHASH_SHA1, $phrase);
+        return mhash(MHASH_SHA256, $phrase);
     }
 }

src/Rezzza/Vaultage/Backend/Basic/ResourceProcessor/File.php

@@ -3,6 +3,7 @@
 namespace Rezzza\Vaultage\Backend\Basic\ResourceProcessor;
 
 use Rezzza\Vaultage\Backend\BackendInterface;
+use Rezzza\Vaultage\Exception\BadCredentialsException;
 use Rezzza\Vaultage\Backend\Basic\Cipher;
 use Rezzza\Vaultage\Backend\ResourceProcessorInterface;
 use Rezzza\Vaultage\Resource\File as Resource;
@@ -76,6 +77,7 @@ public function decrypt(ResourceInterface $resource, BackendInterface $backend,
                 );
                 $processed = true;
             } catch (\Exception $e) {
+                throw new BadCredentialsException('Bad credentials');
             }
         }