Modulecrypton-1.0.4Haskell2010

Crypto.Cipher.RC4

Simple implementation of the RC4 stream cipher. http://en.wikipedia.org/wiki/RC4

Initial FFI implementation by Peter White peter@janrain.com

Reorganized and simplified to have an opaque context.

1 type
3 values

Packagecrypton-1.0.4
Exports4
LanguageHaskell2010
LicenceBSD-3-Clause
SourceRC4.hs

valueinitialize

:: ByteArrayAccess key
=> key
The key
-> State
The RC4 context with the key mixed in

RC4 context initialization.

seed the context with an initial key. the key size need to be adequate otherwise security takes a hit.

valuecombine

:: ByteArray ba
=> State
rc4 context
-> ba
input
-> (State, ba)
new rc4 context, and the output

RC4 xor combination of the rc4 stream with an input

valuegenerate :: ByteArray ba => State -> Int -> (State, ba)

generate the next len bytes of the rc4 stream without combining it to anything.

newtypenewtype State

The encryption state for RC4

This type is an instance of ByteArrayAccess for debugging purpose. Internal layout is architecture dependent, may contain uninitialized data fragments, and change in future versions. The bytearray should not be used as input to cryptographic algorithms.

Instances2NFData, ByteArrayAccess

NFData StateDefined in crypton-1.0.4 · Crypto.Cipher.RC4
ByteArrayAccess StateDefined in crypton-1.0.4 · Crypto.Cipher.RC4