auth

package
v1.0.27 Latest Latest
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 Go to latest Published: Aug 11, 2017 License: BSD-3-Clause, BSD-3-Clause Imports: 12 Imported by: 0

Documentation

Overview

Code used to support authentication tokens for arbitrary purposes.

Index

Constants

View Source 
const (
	TokenType             = "auth"
	CurrentTokenVersion   = 2
	ChallengeLengthBytes  = 32
	ChallengeLengthString = ChallengeLengthBytes * 2 // we use hex encoding
)

Variables

View Source 
var ErrShutdown = errors.New("shutting down")

ErrShutdown is raised when an operation is pending but the CA is shutting down

Functions

func GenerateChallenge 

func GenerateChallenge() (string, error)

GenerateChallenge returns a cryptographically secure random challenge string.

func IsValidChallenge 

func IsValidChallenge(challenge string) bool

IsValidChallenge returns true if the passed challenge is validly formed.

Types

type BadKeyError 

type BadKeyError struct {
	// contains filtered or unexported fields
}

BadKeyError is raised when the given KID is not valid for the given UID.

func (BadKeyError) Error 

func (e BadKeyError) Error() string

type BadUsernameError 

type BadUsernameError struct {
	// contains filtered or unexported fields
}

BadUsernameError is raised when the given username disagreeds with the expected username

func (BadUsernameError) Error 

func (e BadUsernameError) Error() string

type CredentialAuthority 

type CredentialAuthority struct {
	// contains filtered or unexported fields
}

CredentialAuthority should be allocated as a singleton object. It validates UID<->Username<->ActiveKey triples for all users across a service. It keeps a cache and subscribes for updates, so you can call into it as much as you'd like without fear of spamming the network.

func NewCredentialAuthority 

func NewCredentialAuthority(log logger.Logger, api UserKeyAPIer) *CredentialAuthority

NewCredentialAuthority makes a new signleton CredentialAuthority an start it running. It takes as input a logger and an API for making keybase API calls

func (*CredentialAuthority) CheckUserKey 

func (v *CredentialAuthority) CheckUserKey(ctx context.Context, uid keybase1.UID,
	username *libkb.NormalizedUsername, kid *keybase1.KID) (err error)

CheckUserKey is the main point of entry to this library. It takes as input a UID, a username and a kid that should refer to a current valid triple, perhaps extracted from a signed authentication statement. It returns an error if the check fails, and nil otherwise. If username or kid are nil they aren't checked.

func (*CredentialAuthority) CheckUsers 

func (v *CredentialAuthority) CheckUsers(ctx context.Context, users []keybase1.UID) (err error)

CheckUsers is used to validate all provided UIDs are known.

func (*CredentialAuthority) CompareUserKeys 

func (v *CredentialAuthority) CompareUserKeys(ctx context.Context, uid keybase1.UID, sibkeys, subkeys []keybase1.KID) (
	err error)

CompareUserKeys compares the passed sets to the sets known by the API server. It returns true if the sets are equal.

func (*CredentialAuthority) Shutdown 

func (v *CredentialAuthority) Shutdown()

Shutdown the credentialAuthority and delete all internal state.

type InvalidTokenChallengeError 

type InvalidTokenChallengeError struct {
	// contains filtered or unexported fields
}

InvalidTokenChallengeError is raised when the challenge presented in the token does not correspond to the challenge of the verifier.

func (InvalidTokenChallengeError) Error 

func (e InvalidTokenChallengeError) Error() string

type InvalidTokenKeyError 

type InvalidTokenKeyError struct {
	// contains filtered or unexported fields
}

InvalidTokenKeyError is raised when the public key presented in the token does not correspond to the private key used to sign the token.

func (InvalidTokenKeyError) Error 

func (e InvalidTokenKeyError) Error() string

type InvalidTokenServerError 

type InvalidTokenServerError struct {
	// contains filtered or unexported fields
}

InvalidTokenServerError is raised when the server presented in the token does not correspond to the server being asked to verify the token.

func (InvalidTokenServerError) Error 

func (e InvalidTokenServerError) Error() string

type InvalidTokenTypeError 

type InvalidTokenTypeError struct {
	// contains filtered or unexported fields
}

InvalidTokenTypeError is raised when the given token is not of the expected type.

func (InvalidTokenTypeError) Error 

func (e InvalidTokenTypeError) Error() string

type KeysNotEqualError 

type KeysNotEqualError struct {
}

KeysNotEqualError is raised when compared keys sets aren't equal.

func (KeysNotEqualError) Error 

func (e KeysNotEqualError) Error() string

type MaxTokenExpiresError 

type MaxTokenExpiresError struct {
	// contains filtered or unexported fields
}

MaxTokenExpiresError is raised when the given token expires too far in the future.

func (MaxTokenExpiresError) Error 

func (e MaxTokenExpiresError) Error() string

type Token 

type Token struct {
	Body         TokenBody   `json:"body"`
	Client       TokenClient `json:"client"`
	CreationTime int64       `json:"ctime"`
	ExpireIn     int         `json:"expire_in"`
	Tag          string      `json:"tag"`
}

func NewToken 

func NewToken(uid keybase1.UID, username libkb.NormalizedUsername, kid keybase1.KID,
	server, challenge string, now int64, expireIn int,
	clientName, clientVersion string) *Token

func VerifyToken 

func VerifyToken(signature, server, challenge string, maxExpireIn int) (*Token, error)

func (Token) Bytes 

func (t Token) Bytes() []byte

func (Token) Challenge 

func (t Token) Challenge() string

func (Token) ClientName 

func (t Token) ClientName() string

func (Token) ClientVersion 

func (t Token) ClientVersion() string

func (Token) KID 

func (t Token) KID() keybase1.KID

func (Token) Server 

func (t Token) Server() string

func (Token) String 

func (t Token) String() string

func (Token) TimeRemaining 

func (t Token) TimeRemaining() int

func (Token) Type 

func (t Token) Type() string

func (Token) UID 

func (t Token) UID() keybase1.UID

func (Token) Username 

func (t Token) Username() libkb.NormalizedUsername

func (Token) Version 

func (t Token) Version() int

type TokenAuth 

type TokenAuth struct {
	Server    string `json:"server"`
	Challenge string `json:"session"`
}

type TokenBody 

type TokenBody struct {
	Auth    TokenAuth `json:"auth"`
	Key     TokenKey  `json:"key"`
	Type    string    `json:"type"`
	Version int       `json:"version"`
}

type TokenClient 

type TokenClient struct {
	Name    string `json:"name"`
	Version string `json:"version"`
}

type TokenExpiredError 

type TokenExpiredError struct {
	// contains filtered or unexported fields
}

TokenExpiredError is raised when the given token is expired.

func (TokenExpiredError) Error 

func (e TokenExpiredError) Error() string

type TokenKey 

type TokenKey struct {
	UID      keybase1.UID             `json:"uid"`
	Username libkb.NormalizedUsername `json:"username"`
	KID      keybase1.KID             `json:"kid"`
}

type UserKeyAPIer 

type UserKeyAPIer interface {
	// GetUser looks up the username and KIDS active for the given user.
	GetUser(context.Context, keybase1.UID) (
		un libkb.NormalizedUsername, sibkeys, subkeys []keybase1.KID, err error)
	// PollForChanges returns the UIDs that have recently changed on the server
	// side. It will be called in a poll loop. This call should function as
	// a *long poll*, meaning, it should not return unless there is a change
	// to report, or a sufficient amount of time has passed. If an error occurred,
	// then PollForChanges should delay before return, so we don't wind up
	// busy-waiting.
	PollForChanges(context.Context) ([]keybase1.UID, error)
}

UserKeyAPIer is an interface that specifies the UserKeyAPI that will eventually be used to get information about the users from the trusted server authority.

func NewUserKeyAPIer 

func NewUserKeyAPIer(log logger.Logger, api libkb.API) UserKeyAPIer

NewUserKeyAPIer returns a UserKeyAPIer implementation.

Source Files

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