--
  -- This is the unencrypted variant
  --
  PrivateKeyInfo ::= SEQUENCE {
  	version			Version,
  	privateKeyAlgorithm	PrivateKeyAlgorithmIdentifier,
  	privateKey		PrivateKey,
  	attributes		[0] IMPLICIT Attributes OPTIONAL
  }
  
  Version ::= INTEGER  ({ pkcs8_note_version })
  
  PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier ({ pkcs8_note_algo })
  
  PrivateKey ::= OCTET STRING ({ pkcs8_note_key })
  
  Attributes ::= SET OF Attribute
  
  Attribute ::= ANY
  
  AlgorithmIdentifier ::= SEQUENCE {
  	algorithm   OBJECT IDENTIFIER ({ pkcs8_note_OID }),
  	parameters  ANY OPTIONAL
  }