OpenSSL.EVP.Digest.Error

Low-level bindings to OpenSSL's EVP interface. Most users do not need this code. Check out OpenSSL.Digest for a more comfortable interface.

Documentation

throwIfZero :: String -> IO CInt -> IO ()

Most OpenSSL functions return an approximation of Bool to signify failure. This wrapper makes it easier to move the error handling to the exception layer where appropriate.

newtype UnknownAlgorithm

A custom exception type which is thrown by digestByName in case the requested digest algorithm is not available in the OpenSSL system library.

Constructors

UnknownAlgorithm String

Instances

Show UnknownAlgorithm

Methods

showsPrec :: Int -> UnknownAlgorithm -> ShowS

show :: UnknownAlgorithm -> String

showList :: [UnknownAlgorithm] -> ShowS

Exception UnknownAlgorithm

Methods

toException :: UnknownAlgorithm -> SomeException

fromException :: SomeException -> Maybe UnknownAlgorithm

displayException :: UnknownAlgorithm -> String