encryption - Using CreateDecryotor() in PowerShell -


I was thinking that someone could help me with the error found in PowerShell. I'm not having any problems with making the encryptor shown below: 

  $ crypto = New-object System.Security.Cryptography.RNGCryptoServiceProvider $ IV = New-Object System.Byte [] 16 $ crypto GetNonZeroBytes ($ iv) $ RIJSym = New-Item System.Security.Cryptography.RijndaelManaged [Byte []] $ key = ('mysecret $% @'). ToCharArray () $ encryptor = $ RIJSym.CreateEncryptor ($ key, $ 4)   
 But when I want to decrypt my key, I have a problem for any reason This is what I am using and when I run the program I get:  
  $ decrypted = $ RIJSym.CreateDecryptor ($ encryptor)   
 Error message  
  can not find an overload for "CreateDecryptor" and logic number: "1" 15 four: $ 1 $ $ DeCryp = $ rijSym.CreateDecryptor ($ en Cryptor) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodException + FullyQualifiedErrorId: MethodCountCouldNotFindBest    
 
 
 error Says ...  CreateDecryptor ()  does not charge a surcharge uses a single logic. Valid surcharges are as follows:  
  PS & gt; $ RIJSym.CreateDecryptor OverloadDefinitions ------------------- System.Security.Cryptography.ICryptoTransform CreateDecryptor (Byte [] rgbKey, Byte [] rgbIV) System.Security.Cryptography.ICryptoTransform CreateDecryptor ()   
 You need to create a decryptor in the same manner to create an encryptor: specifying the key and fourth, the former.    $ decrypted = $ RIJSym.CreateDecryptor ($ key, $ IV)

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