jose-0.9: JSON Object Signing and Encryption (JOSE) and JSON Web Token (JWT) library
Safe HaskellNone
LanguageHaskell2010

Crypto.JOSE.Header

Description

Types and functions for working with JOSE header parameters.

Synopsis

Defining header data types

data HeaderParam p a Source #

A header value, along with a protection indicator.

Constructors

HeaderParam p a 

Instances

Instances details
Functor (HeaderParam p) Source # 
Instance details

Defined in Crypto.JOSE.Header

Methods

fmap :: (a -> b) -> HeaderParam p a -> HeaderParam p b #

(<$) :: a -> HeaderParam p b -> HeaderParam p a #

(Eq p, Eq a) => Eq (HeaderParam p a) Source # 
Instance details

Defined in Crypto.JOSE.Header

Methods

(==) :: HeaderParam p a -> HeaderParam p a -> Bool #

(/=) :: HeaderParam p a -> HeaderParam p a -> Bool #

(Show p, Show a) => Show (HeaderParam p a) Source # 
Instance details

Defined in Crypto.JOSE.Header

Methods

showsPrec :: Int -> HeaderParam p a -> ShowS #

show :: HeaderParam p a -> String #

showList :: [HeaderParam p a] -> ShowS #

class Eq a => ProtectionIndicator a where Source #

Methods

getProtected :: a Source #

Get a value for indicating protection.

getUnprotected :: Maybe a Source #

Get a Just a value for indicating no protection, or Nothing if the type does not support unprotected headers.

Instances

Instances details
ProtectionIndicator () Source # 
Instance details

Defined in Crypto.JOSE.Header

ProtectionIndicator Protection Source # 
Instance details

Defined in Crypto.JOSE.Header

data Protection Source #

Whether a header is protected or unprotected

Constructors

Protected 
Unprotected 

Instances

Instances details
Eq Protection Source # 
Instance details

Defined in Crypto.JOSE.Header

Show Protection Source # 
Instance details

Defined in Crypto.JOSE.Header

ProtectionIndicator Protection Source # 
Instance details

Defined in Crypto.JOSE.Header

isProtected :: ProtectionIndicator p => Getter (HeaderParam p a) Bool Source #

Getter for whether a parameter is protected

param :: Lens' (HeaderParam p a) a Source #

Lens for a HeaderParam value

Defining header parsers

The parseParamsFor function defines the parser for a header type.

parseParamsFor
  :: (HasParams a, HasParams b)
  => Proxy b -> Maybe Object -> Maybe Object -> Parser a

It is defined over two objects: the protected header and the unprotected header. The following functions are provided for parsing header parameters:

headerOptional
An optional parameter that may be protected or unprotected.
headerRequired
A required parameter that may be protected or unprotected.
headerOptionalProtected
An optional parameter that, if present, MUST be carried in the protected header.
headerRequiredProtected
A required parameter that, if present, MUST be carried in the protected header.

Duplicate headers are forbidden. The above functions all perform duplicate header detection. If you do not use them, be sure to perform this detection yourself!

An example parser:

instance HasParams ACMEHeader where
  parseParamsFor proxy hp hu = ACMEHeader
    <$> parseParamsFor proxy hp hu
    <*> headerRequiredProtected "nonce" hp hu

class HasParams (a :: Type -> Type) where Source #

A thing with parameters.

Minimal complete definition

params, parseParamsFor

Methods

params :: ProtectionIndicator p => a p -> [(Bool, Pair)] Source #

Return a list of parameters, each paired with whether it is protected or not.

extensions :: Proxy a -> [Text] Source #

List of "known extensions", i.e. keys that may appear in the "crit" header parameter.

parseParamsFor :: (HasParams b, ProtectionIndicator p) => Proxy b -> Maybe Object -> Maybe Object -> Parser (a p) Source #

Instances

Instances details
HasParams JWSHeader Source # 
Instance details

Defined in Crypto.JOSE.JWS

HasParams JWEHeader Source # 
Instance details

Defined in Crypto.JOSE.JWE

headerRequired :: (FromJSON a, ProtectionIndicator p) => Text -> Maybe Object -> Maybe Object -> Parser (HeaderParam p a) Source #

Parse a required parameter that may be carried in either the protected or the unprotected header.

headerRequiredProtected :: FromJSON a => Text -> Maybe Object -> Maybe Object -> Parser a Source #

Parse a required parameter that MUST be carried in the protected header.

headerOptional :: (FromJSON a, ProtectionIndicator p) => Text -> Maybe Object -> Maybe Object -> Parser (Maybe (HeaderParam p a)) Source #

Parse an optional parameter that may be carried in either the protected or the unprotected header.

headerOptionalProtected :: FromJSON a => Text -> Maybe Object -> Maybe Object -> Parser (Maybe a) Source #

Parse an optional parameter that, if present, MUST be carried in the protected header.

Parsing headers

parseParams Source #

Arguments

:: forall a p. (HasParams a, ProtectionIndicator p) 
=> Maybe Object

protected header

-> Maybe Object

unprotected header

-> Parser (a p) 

Parse a pair of objects (protected and unprotected header)

This internally invokes parseParamsFor applied to a proxy for the target type. (This allows the parsing of the "crit" parameter to access "known extensions" understood by the target type.)

parseCrit Source #

Arguments

:: (Foldable t0, Foldable t1, Traversable t2, Traversable t3, MonadFail m) 
=> t0 Text

reserved header parameters

-> t1 Text

recognised extensions

-> Object

full header (union of protected and unprotected headers)

-> t2 (t3 Text)

crit header

-> m (t2 (t3 Text)) 

Parse a "crit" header param

Fails if:

  • any reserved header appears in "crit" header
  • any value in "crit" is not a recognised extension
  • any value in "crit" does not have a corresponding key in the object

Encoding headers

protectedParamsEncoded :: (HasParams a, ProtectionIndicator p) => a p -> ByteString Source #

Return the base64url-encoded protected parameters

unprotectedParams Source #

Arguments

:: (HasParams a, ProtectionIndicator p) 
=> a p 
-> Maybe Value

Object

Return unprotected params as a JSON Value (always an object)

Header fields shared by JWS and JWE

class HasAlg a where Source #

Methods

alg :: Lens' (a p) (HeaderParam p Alg) Source #

Instances

Instances details
HasJWSHeader a => HasAlg a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

alg :: Lens' (a p) (HeaderParam p Alg) Source #

class HasJku a where Source #

Methods

jku :: Lens' (a p) (Maybe (HeaderParam p URI)) Source #

Instances

Instances details
HasJWSHeader a => HasJku a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

jku :: Lens' (a p) (Maybe (HeaderParam p URI)) Source #

class HasJwk a where Source #

Methods

jwk :: Lens' (a p) (Maybe (HeaderParam p JWK)) Source #

Instances

Instances details
HasJWSHeader a => HasJwk a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

jwk :: Lens' (a p) (Maybe (HeaderParam p JWK)) Source #

class HasKid a where Source #

Methods

kid :: Lens' (a p) (Maybe (HeaderParam p Text)) Source #

Instances

Instances details
HasJWSHeader a => HasKid a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

kid :: Lens' (a p) (Maybe (HeaderParam p Text)) Source #

class HasX5u a where Source #

Methods

x5u :: Lens' (a p) (Maybe (HeaderParam p URI)) Source #

Instances

Instances details
HasJWSHeader a => HasX5u a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

x5u :: Lens' (a p) (Maybe (HeaderParam p URI)) Source #

class HasX5c a where Source #

Instances

Instances details
HasJWSHeader a => HasX5c a Source # 
Instance details

Defined in Crypto.JOSE.JWS

class HasX5t a where Source #

Methods

x5t :: Lens' (a p) (Maybe (HeaderParam p Base64SHA1)) Source #

Instances

Instances details
HasJWSHeader a => HasX5t a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

x5t :: Lens' (a p) (Maybe (HeaderParam p Base64SHA1)) Source #

class HasX5tS256 a where Source #

Instances

Instances details
HasJWSHeader a => HasX5tS256 a Source # 
Instance details

Defined in Crypto.JOSE.JWS

class HasTyp a where Source #

Methods

typ :: Lens' (a p) (Maybe (HeaderParam p Text)) Source #

Instances

Instances details
HasJWSHeader a => HasTyp a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

typ :: Lens' (a p) (Maybe (HeaderParam p Text)) Source #

class HasCty a where Source #

Methods

cty :: Lens' (a p) (Maybe (HeaderParam p Text)) Source #

Instances

Instances details
HasJWSHeader a => HasCty a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

cty :: Lens' (a p) (Maybe (HeaderParam p Text)) Source #

class HasCrit a where Source #

Methods

crit :: Lens' (a p) (Maybe (NonEmpty Text)) Source #

Instances

Instances details
HasJWSHeader a => HasCrit a Source # 
Instance details

Defined in Crypto.JOSE.JWS

Methods

crit :: Lens' (a p) (Maybe (NonEmpty Text)) Source #