Crypto.Cipher.DH

Documentation

type Params = (Integer, Integer)

Represent Diffie Hellman parameters namely P (prime), and G (generator).

data PublicNumber

Represent Diffie Hellman public number Y.

Instances

Enum PublicNumber

Eq PublicNumber

Num PublicNumber

Ord PublicNumber

Read PublicNumber

Real PublicNumber

Show PublicNumber

data PrivateNumber

Represent Diffie Hellman private number X.

Instances

Enum PrivateNumber

Eq PrivateNumber

Num PrivateNumber

Ord PrivateNumber

Read PrivateNumber

Real PrivateNumber

Show PrivateNumber

data SharedKey

Represent Diffie Hellman shared secret.

Instances

Enum SharedKey

Eq SharedKey

Num SharedKey

Ord SharedKey

Read SharedKey

Real SharedKey

Show SharedKey

generateParams :: CryptoRandomGen g => g -> Int -> Integer -> Either GenError (Params, g)

generate params from a specific generator (2 or 5 are common values) we generate a safe prime (a prime number of the form 2p+1 where p is also prime)

generatePrivate :: CryptoRandomGen g => g -> Int -> Either GenError (PrivateNumber, g)

generate a private number with no specific property this number is usually called X in DH text.

generatePublic :: Params -> PrivateNumber -> PublicNumber

generate a public number that is for the other party benefits. this number is usually called Y in DH text.

getShared :: Params -> PrivateNumber -> PublicNumber -> SharedKey

generate a shared key using our private number and the other party public number