OpenSSL.EVP.Cipher

An interface to symmetric cipher algorithms.

Documentation

data Cipher

Cipher is an opaque object that represents an algorithm of symmetric cipher.

getCipherByName :: String -> IO (Maybe Cipher)

getCipherByName name returns a symmetric cipher algorithm whose name is name. If no algorithms are found, the result is Nothing.

getCipherNames :: IO [String]

getCipherNames returns a list of name of symmetric cipher algorithms.

data CryptoMode

CryptoMode represents instruction to cipher and such like.

Constructors

Encrypt

Decrypt

cipher

Arguments

:: Cipher

algorithm to use

-> String

symmetric key

-> String

IV

-> CryptoMode

operation

-> String

An input string to encrypt/decrypt. Note that the string must not contain any letters which aren't in the range of U+0000 - U+00FF.

-> IO String

the result string

Deprecated: Use cipherBS, cipherLBS or cipherStrictLBS.

cipher lazilly encrypts or decrypts a stream of data. The input string doesn't necessarily have to be finite.

cipherBS

Arguments

:: Cipher

algorithm to use

-> ByteString

symmetric key

-> ByteString

IV

-> CryptoMode

operation

-> ByteString

input string to encrypt/decrypt

-> IO ByteString

the result string

cipherBS strictly encrypts or decrypts a chunk of data.

cipherLBS

Arguments

:: Cipher

algorithm to use

-> ByteString

symmetric key

-> ByteString

IV

-> CryptoMode

operation

-> ByteString

input string to encrypt/decrypt

-> IO ByteString

the result string

cipherLBS lazilly encrypts or decrypts a stream of data. The input string doesn't necessarily have to be finite.

cipherStrictLBS

Arguments

:: Cipher

Cipher

-> ByteString

Key

-> ByteString

IV

-> CryptoMode

Encrypt/Decrypt

-> ByteString

Input

-> IO ByteString

Encrypt a lazy bytestring in a strict manner. Does not leak the keys.