Safe Haskell	None
Language	Haskell2010

Crypto.QNAP

Contents

Decrypt
Errors

Description

This is the heart of the qnap-decrypt package. It provides the function to decrypt the files encryped by QNAP's Hybrid Backup Sync.

Synopsis

decrypt :: String -> FilePath -> FilePath -> IO (Maybe DecryptError)
data DecryptError
- = PasswordEmpty
- | InvalidKey
- | UnknownFileType
- | BadMagic
- | HeaderDecodeError String
- | PaddingError
- | IOError IOException
- | ZlibError ZlibException
- | FileSizeMismatch

Decrypt

decrypt Source #

Arguments

:: String	The password
-> FilePath	The source file
-> FilePath	The target file
-> IO (Maybe DecryptError)	Returns an error or `Nothing` in case of a success

Decrypt a QNAP encoded file (does not throw an exception)

Since 0.3.0

Errors

data DecryptError Source #

Errors the decrypter could run into

The Exception instance has a specialized displayException function which renders the error in english text (unlike show which just displays the constructor).

Since 0.3.0

Constructors

PasswordEmpty	Password is empty
InvalidKey	Invalid encryption key
UnknownFileType	Unknown file type (the file is not encrypted or it's version is not known)
BadMagic	Bad Magic (probably wrong password)
HeaderDecodeError String	Error decoding the header: <error>
PaddingError	Padding is corrupt (probably damaged file)
IOError IOException	IO Exception: <error>
ZlibError ZlibException	Decompression Exception: <error> (probably damaged file)
FileSizeMismatch	File size is different than excepted (probably damaged file)

Instances

Show DecryptError Source #
Instance details Defined in Crypto.QNAP Methods showsPrec :: Int -> DecryptError -> ShowS # show :: DecryptError -> String # showList :: [DecryptError] -> ShowS #
Exception DecryptError Source #
Instance details Defined in Crypto.QNAP Methods toException :: DecryptError -> SomeException # fromException :: SomeException -> Maybe DecryptError # displayException :: DecryptError -> String #