License	BSD-style
Maintainer	Vincent Hanquez <vincent@snarc.org>
Stability	experimental
Portability	Good
Safe Haskell	None
Language	Haskell2010

Crypto.PubKey.RSA

Contents

generation function

Description

Synopsis

Documentation

data Error #

error possible during encryption, decryption or signing.

Constructors

MessageSizeIncorrect	the message to decrypt is not of the correct size (need to be == private_size)
MessageTooLong	the message to encrypt is too long
MessageNotRecognized	the message decrypted doesn't have a PKCS15 structure (0 2 .. 0 msg)
SignatureTooLong	the message's digest is too long
InvalidParameters	some parameters lead to breaking assumptions.

Instances

Eq Error #
Methods (==) :: Error -> Error -> Bool # (/=) :: Error -> Error -> Bool #
Show Error #
Methods showsPrec :: Int -> Error -> ShowS # show :: Error -> String # showList :: [Error] -> ShowS #

data PublicKey #

Represent a RSA public key

Constructors

PublicKey
Fields public_size :: Int size of key in bytes public_n :: Integer public p*q public_e :: Integer public exponant e

Instances

Eq PublicKey #
Methods (==) :: PublicKey -> PublicKey -> Bool # (/=) :: PublicKey -> PublicKey -> Bool #
Data PublicKey #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> PublicKey -> c PublicKey # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c PublicKey # toConstr :: PublicKey -> Constr # dataTypeOf :: PublicKey -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c PublicKey) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c PublicKey) # gmapT :: (forall b. Data b => b -> b) -> PublicKey -> PublicKey # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> PublicKey -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> PublicKey -> r # gmapQ :: (forall d. Data d => d -> u) -> PublicKey -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> PublicKey -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> PublicKey -> m PublicKey # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> PublicKey -> m PublicKey # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> PublicKey -> m PublicKey #
Read PublicKey #
Methods readsPrec :: Int -> ReadS PublicKey # readList :: ReadS [PublicKey] # readPrec :: ReadPrec PublicKey # readListPrec :: ReadPrec [PublicKey] #
Show PublicKey #
Methods showsPrec :: Int -> PublicKey -> ShowS # show :: PublicKey -> String # showList :: [PublicKey] -> ShowS #
NFData PublicKey #
Methods rnf :: PublicKey -> () #

data PrivateKey #

Represent a RSA private key.

Only the pub, d fields are mandatory to fill.

p, q, dP, dQ, qinv are by-product during RSA generation, but are useful to record here to speed up massively the decrypt and sign operation.

implementations can leave optional fields to 0.

Constructors

PrivateKey
Fields private_pub :: PublicKey public part of a private key (size, n and e) private_d :: Integer private exponant d private_p :: Integer p prime number private_q :: Integer q prime number private_dP :: Integer d mod (p-1) private_dQ :: Integer d mod (q-1) private_qinv :: Integer q^(-1) mod p

Instances

Eq PrivateKey #
Methods (==) :: PrivateKey -> PrivateKey -> Bool # (/=) :: PrivateKey -> PrivateKey -> Bool #
Data PrivateKey #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> PrivateKey -> c PrivateKey # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c PrivateKey # toConstr :: PrivateKey -> Constr # dataTypeOf :: PrivateKey -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c PrivateKey) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c PrivateKey) # gmapT :: (forall b. Data b => b -> b) -> PrivateKey -> PrivateKey # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> PrivateKey -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> PrivateKey -> r # gmapQ :: (forall d. Data d => d -> u) -> PrivateKey -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> PrivateKey -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> PrivateKey -> m PrivateKey # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> PrivateKey -> m PrivateKey # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> PrivateKey -> m PrivateKey #
Read PrivateKey #
Methods readsPrec :: Int -> ReadS PrivateKey # readList :: ReadS [PrivateKey] # readPrec :: ReadPrec PrivateKey # readListPrec :: ReadPrec [PrivateKey] #
Show PrivateKey #
Methods showsPrec :: Int -> PrivateKey -> ShowS # show :: PrivateKey -> String # showList :: [PrivateKey] -> ShowS #
NFData PrivateKey #
Methods rnf :: PrivateKey -> () #

data Blinder #

Blinder which is used to obfuscate the timing of the decryption primitive (used by decryption and signing).

Constructors

Blinder !Integer !Integer

Instances

Eq Blinder #
Methods (==) :: Blinder -> Blinder -> Bool # (/=) :: Blinder -> Blinder -> Bool #
Show Blinder #
Methods showsPrec :: Int -> Blinder -> ShowS # show :: Blinder -> String # showList :: [Blinder] -> ShowS #

generation function

generateWith #

Arguments

:: (Integer, Integer)	chosen distinct primes p and q
-> Int	size in bytes
-> Integer	RSA public exponant `e`
-> Maybe (PublicKey, PrivateKey)

Generate a key pair given p and q.

p and q need to be distinct prime numbers.

e need to be coprime to phi=(p-1)*(q-1). If that's not the case, the function will not return a key pair. A small hamming weight results in better performance.

e=0x10001 is a popular choice
e=3 is popular as well, but proven to not be as secure for some cases.

generate #

Arguments

:: MonadRandom m
=> Int	size in bytes
-> Integer	RSA public exponant `e`
-> m (PublicKey, PrivateKey)

generate a pair of (private, public) key of size in bytes.

generateBlinder #

Arguments

:: MonadRandom m
=> Integer	RSA public N parameter.
-> m Blinder

Generate a blinder to use with decryption and signing operation

the unique parameter apart from the random number generator is the public key value N.