adhoc-network-1.0.2: Ad-hoc P2P network protocol Source code Contents Index

Network.AdHoc.Signature Maintainer Henning Guenther

Description

This module is a helper for signature checking. It gives the text that needs to be hashed in order to create or verify a signature.

Synopsis

data Signature = Signature { sign_type :: SignType signature :: ByteString } data SignType = MD5 | SignUnknown String data SignatureStatus = SignatureOK | SignatureWrong | CertificateMissing (Certificate -> SignatureStatus) type NoSignature = () type InternalSignature = Either PrivateKey ExternalSignature type ExternalSignature = Maybe (Signature, SignatureStatus) class ToInternalSignature s where toInternal :: s -> InternalSignature getHashString :: [Content i] -> String verifySignature :: String -> Signature -> Certificate -> SignatureStatus

Documentation

data Signature Source

A raw signature. Constructors Signature sign_type :: SignType The type of the signature signature :: ByteString The actual signature Instances Eq Signature Show Signature

data SignType Source

Specifies the signature algorithm used to sign a message. Constructors MD5 MD5 has been used to sign the message SignUnknown String An unknown signature algorithm was used Instances Eq SignType Show SignType

data SignatureStatus Source

This type represents the possible results of verifying a signature. Constructors SignatureOK The signature was valid SignatureWrong The signature was invalid CertificateMissing (Certificate -> SignatureStatus) The signature could not be checked, becuase a Certificate was missing. The function is a callback to be called when the missing certificate has been acquired. Instances Eq SignatureStatus Show SignatureStatus

type NoSignature = () Source

No signature has been given.

type InternalSignature = Either PrivateKey ExternalSignature Source

The message has been locally created, so we know the private key.

type ExternalSignature = Maybe (Signature, SignatureStatus) Source

The signature has been received via network. The signature might be knwon or not.

class ToInternalSignature s where Source

A class of types that have an internal signature status. Methods toInternal :: s -> InternalSignature Source Instances ToInternalSignature ExternalSignature ToInternalSignature InternalSignature ToInternalSignature NoSignature

getHashString :: [Content i] -> String Source

Calculates the concatenation of all text nodes in the list of contents, except for receiver elements

verifySignature :: String -> Signature -> Certificate -> SignatureStatus Source

Given a certificate, this function verifies the Signature of a String.

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