Network.CommSec

CommSec, for communications security.

Types

data OutContext

A context useful for sending data.

Constructors

Out

Fields

aesCtr :: !Word64

saltOut :: !Word32

outKey :: AESKey

data InContext

A context useful for receiving data.

Constructors

In

Fields

base :: !Word64

mask :: !Word64

saltIn :: !Word32

inKey :: AESKey

Build contexts for use sending and receiving

newInContext :: ByteString -> InContext

Given at least 24 bytes of entropy, produce an in context that can communicate with an identically initialized out context.

newOutContext :: ByteString -> OutContext

Given at least 24 bytes of entropy, produce an out context that can communicate with an identically initialized in context.

recv :: InContext -> ByteString -> Either String (ByteString, InContext)

Use an InContext to decrypt a message, verifying the ICV and sequence number. Message format: [ctr, ct, padding, tag].

send :: OutContext -> ByteString -> (ByteString, OutContext)

Use an OutContext to protect a message for transport. Message format: [ctr, ct, padding, tag].