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{- -*- haskell -*- -}
-- |HsOpenSSL is an (incomplete) OpenSSL binding for Haskell. It can
-- generate RSA and DSA keys, read and write PEM files, generate
-- message digests, sign and verify messages, encrypt and decrypt
-- messages. But since OpenSSL is a very large library, it is uneasy
-- to cover every parts of it.
--
-- Features that aren't (yet) supported:
--
-- [/SSL network connection/] ssl(3) functionalities aren't fully
-- covered yet. See "OpenSSL.Session".
--
-- [/Complete coverage of Low-level API to symmetric ciphers/] Only
-- high-level APIs (EVP and BIO) are fully available. But I believe
-- no one will be lost without functions like @DES_set_odd_parity@.
--
-- [/Low-level API to asymmetric ciphers/] Only a high-level API
-- (EVP) is available. But I believe no one will complain about the
-- absence of functions like @RSA_public_encrypt@.
--
-- [/Key generation of Diffie-Hellman algorithm/] Only RSA and DSA
-- keys can currently be generated.
--
-- [/X.509 v3 extension handling/] It should be supported in the
-- future.
--
-- [/Low-level API to message digest functions/] Just use EVP
-- instead of something like @MD5_Update@.
--
-- [/API to PKCS#12 functionality/] It should be covered someday.
--
-- [/BIO/] BIO isn't needed because we are Haskell hackers. Though
-- HsOpenSSL itself uses BIO internally.
--
-- [/ENGINE cryptographic module/] The default implementations work
-- very well, don't they?
--
-- So if you find out any features you want aren't supported, you must
-- write your own patch (or take over the HsOpenSSL project). Happy
-- hacking.
#include "HsOpenSSL.h"
module OpenSSL
( withOpenSSL
)
where
import OpenSSL.SSL
foreign import ccall "HsOpenSSL_setupMutex"
setupMutex :: IO ()
-- |Computation of @'withOpenSSL' action@ initializes the OpenSSL
-- library and computes @action@. Every applications that use
-- HsOpenSSL must wrap any operations related to OpenSSL with
-- 'withOpenSSL', or they might crash.
--
-- > module Main where
-- > import OpenSSL
-- >
-- > main :: IO ()
-- > main = withOpenSSL $
-- > do ...
--
withOpenSSL :: IO a -> IO a
withOpenSSL act
= do loadErrorStrings
addAllAlgorithms
libraryInit
setupMutex
act
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