ssi

package
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 Go to latest Published: Aug 19, 2021 License: Apache-2.0 Imports: 20 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Edge agents are the agents which are at the end of the agent route. They
	// are the final endpoint of the agent messages. In the agency we can have
	// pure EAs when CLI is used, or we can have Worker EAs which are working
	// together with their Cloud Agent.
	Edge = 0x01

	// Worker is an Edge Agent in the Cloud. Workers are used to allow EAs to
	// have endpoints inside to identity domain. Worker EAs can be always on,
	// and listen their endpoints. These cloud EAs have their own wallets,
	// which can be copied to actual EA's device if needed.
	Worker = 0x02
)

Please be noted that Cloud Agent is the default value.

View Source 
const WalletAlreadyExistsError = 203

Variables

View Source 
var Wallets = &Mgr{
	opened: make(WalletMap, maxOpened),
}

Functions

func ClosePool 

func ClosePool()

func CredDefFromLedger 

func CredDefFromLedger(DID, credDefID string) (cd string, err error)

func Pool 

func Pool() (v int)

Types

type Agent 

type Agent interface {
	AgentType
	Wallet() (h int)
	RootDid() *DID
	CreateDID(seed string) (agentDid *DID)
	SendNYM(targetDid *DID, submitterDid, alias, role string) error
	AddDIDCache(DID *DID)
}

type AgentType 

type AgentType interface {
	IsCA() bool
	IsEA() bool
}

type Cache 

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

Cache is keeps DIDs in memory per agent because they are so slow to load from wallet. Cache is not thread safe because this is not a global cache but per Agent.

func (*Cache) Add 

func (c *Cache) Add(d *DID)

Add is for the cases when DID is ready, like we know the DID`s name already.

func (*Cache) Get 

func (c *Cache) Get(s string, sure bool) *DID

Get to DID by name from cache. With sure we can tell to panic if DID not found. That's development time use case, and normal cases the caller should check the return value.

func (*Cache) LazyAdd 

func (c *Cache) LazyAdd(s string, d *DID)

LazyAdd is for the cases when we know the DID's name but the key is not yet fetched i.e. DID is launched to get key.

type DID 

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

DID is an application framework level wrapper for findy.DID implementation. Uses Future to async processing of the findy.Channel results.

func NewAgentDid 

func NewAgentDid(wallet managed.Wallet, f *Future) (ad *DID)

func NewDid 

func NewDid(did, verkey string) (d *DID)

func NewDidWithKeyFuture 

func NewDidWithKeyFuture(wallet managed.Wallet, did string, verkey *Future) (d *DID)

func (*DID) AEndp 

func (d *DID) AEndp() (ae service.Addr, err error)

func (*DID) Did 

func (d *DID) Did() string

func (*DID) Endpoint 

func (d *DID) Endpoint() string

func (*DID) Pairwise 

func (d *DID) Pairwise(wallet int, theirDID *DID, meta string)

func (*DID) SetAEndp 

func (d *DID) SetAEndp(ae service.Addr)

func (*DID) SetWallet 

func (d *DID) SetWallet(w managed.Wallet)

func (*DID) StartEndp 

func (d *DID) StartEndp(wallet int)

func (*DID) Store 

func (d *DID) Store(wallet int)

Store stores this DID as their DID to given wallet. Work is done thru futures so the call doesn't block. The meta data is set "pairwise". See StoreResult() for status.

func (*DID) StoreResult 

func (d *DID) StoreResult() error

StoreResult returns error status of the Store() functions result. If storing their DID and related meta and pairwise data isn't ready, this call blocks.

func (*DID) URI 

func (d *DID) URI() string

func (*DID) VerKey 

func (d *DID) VerKey() (vk string)

func (*DID) Wallet 

func (d *DID) Wallet() int

type DIDAgent 

type DIDAgent struct {
	WalletH managed.Wallet

	// result future of the wallet export, one time attr, obsolete soon
	Export Future

	// the Root DID which gives us rights to write ledger
	Root *DID
	// keep 'all' DIDs for performance reasons as well as better usability of our APIs
	DidCache Cache
	// Agent type: CA, EA, Worker, etc.
	Type Type

	SAImplID string        // SA implementation ID, used mostly for tests
	EAEndp   *service.Addr // EA endpoint if set, used for SA API and notifications
}

DIDAgent is the main abstraction of the package together with Agency. The agent started as a CA but has been later added support for EAs and worker/cloud-EA as well. This might be something we will change later. DIDAgent's most important task is/WAS to receive Payloads and process Messages inside them. And there are lots of stuff to support that. That part of code is heavily under construction.

More concrete parts of the DIDAgent are support for wallet, root DID, did cache. Web socket connections are more like old relic, and that will change in future for something else. It WAS part of the protocol STATE management.

Please be noted that DIDAgent or more precisely CA is singleton by its nature per EA it serves. So, Cloud DIDAgent is a gateway to world for EA it serves. EAs are mostly in mobile devices and handicapped by their nature. In our latest architecture CA serves EA by creating a worker EA which lives in the cloud as well. For now, in the most cases we have pair or agents serving each mobile EAs here in the cloud: CA and w-EA.

There is DIDAgent.Type where this DIDAgent can be EA only. That type is used for test and CLI Go clients.

func (*DIDAgent) AddDIDCache 

func (a *DIDAgent) AddDIDCache(DID *DID)

func (*DIDAgent) AssertWallet 

func (a *DIDAgent) AssertWallet()

func (*DIDAgent) CloseWallet 

func (a *DIDAgent) CloseWallet()

func (*DIDAgent) CreateDID 

func (a *DIDAgent) CreateDID(seed string) (agentDid *DID)

CreateDID creates a new DID thru the Future which means that returned *DID follows 'lazy fetch' principle. You should call this as early as possible for the performance reasons. Most cases seed should be empty string.

func (*DIDAgent) FindPW 

func (a *DIDAgent) FindPW(my string) (their string, pwname string, err error)

FindPW finds pairwise by name. This is a ReceiverEndp interface method.

func (*DIDAgent) IsCA 

func (a *DIDAgent) IsCA() bool

func (*DIDAgent) IsEA 

func (a *DIDAgent) IsEA() bool

func (*DIDAgent) IsWorker 

func (a *DIDAgent) IsWorker() bool

func (*DIDAgent) LoadDID 

func (a *DIDAgent) LoadDID(did string) *DID

func (*DIDAgent) OpenDID 

func (a *DIDAgent) OpenDID(name string) *DID

func (*DIDAgent) OpenPool 

func (a *DIDAgent) OpenPool(name string)

func (*DIDAgent) OpenWallet 

func (a *DIDAgent) OpenWallet(aw Wallet)

func (*DIDAgent) Pairwise 

func (a *DIDAgent) Pairwise(name string) (my string, their string, err error)

func (*DIDAgent) Pool 

func (a *DIDAgent) Pool() (v int)

func (*DIDAgent) RootDid 

func (a *DIDAgent) RootDid() *DID

func (*DIDAgent) SaveTheirDID 

func (a *DIDAgent) SaveTheirDID(did, vk string, writeNYM bool) (err error)

func (*DIDAgent) SendNYM 

func (a *DIDAgent) SendNYM(
	targetDid *DID, submitterDid, alias, role string) (err error)

func (*DIDAgent) SetRootDid 

func (a *DIDAgent) SetRootDid(rootDid *DID)

func (*DIDAgent) Wallet 

func (a *DIDAgent) Wallet() (h int)

type DidComm 

type DidComm interface {
	Did() string
}

type EndpointBuilder 

type EndpointBuilder interface {
	BuildEndpURL() string
}

type Future 

type Future struct {
	On State
	V  interface{}
	// contains filtered or unexported fields
}

func NewFuture 

func NewFuture(ch findy.Channel) *Future

NewFuture changes the existing findy.Channel to a Future.

func OpenPool 

func OpenPool(name string) *Future

Open opens ledger connection first time called. After that returns previous handle without checking the pool name. If caller wants to reopen new pool it must call ClosePool() first.

Note! We could have unit tests working with out ledger by reserving certain ledger handle and name, but that should be done in the indy Go wrapper

func (*Future) Bytes 

func (f *Future) Bytes() (b []byte)

func (*Future) Int 

func (f *Future) Int() (i int)

func (*Future) IsEmpty 

func (f *Future) IsEmpty() bool

func (*Future) Result 

func (f *Future) Result() (dtoResult *dto.Result)

func (*Future) SetChan 

func (f *Future) SetChan(ch findy.Channel)

SetChan sets the existing findy.Channel to this Future.

func (*Future) Str1 

func (f *Future) Str1() string

func (*Future) Str2 

func (f *Future) Str2() string

func (*Future) Strs 

func (f *Future) Strs() (s1, s2, s3 string)

type Handle 

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

Handle implements ManagedWallet interface. These types together offer an API to use SSI wallets conveniently. They hide closing and opening logic which is needed to reserve OS level file handles. Only limited amount of simultaneous wallet handles is kept open (MaxOpen). See more information from API function descriptions.

func (*Handle) Close 

func (h *Handle) Close()

Close frees the wallet handle to reuse by WalletMgr. Please note that it's NOT important or desired to call this function during the agency process is running.

func (*Handle) Config 

func (h *Handle) Config() managed.WalletCfg

Config returns managed wallet's associated indy wallet configuration.

func (*Handle) Handle 

func (h *Handle) Handle() int

Handle returns the actual indy wallet handle which can be used with indy SDK API calls. The Handle function hides all the needed complexity behind it. For example, if the actual libindy wallet handle is already closed, it will be opened first. Please note that there is no performance penalty i.e. no optimization is needed.

type In 

type In interface {
	Out
	Wallet() int
}

type Mgr 

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

func (*Mgr) Open 

func (m *Mgr) Open(cfg *Wallet) managed.Wallet

Open opens a wallet configuration and returns a managed wallet.

func (*Mgr) Reset 

func (m *Mgr) Reset()

Reset resets the managed wallet buffer which means that all the current wallet configurations must be registered again with ssi.Wallets.Open. Note! You should not need to use this!

type Out 

type Out interface {
	DidComm
	VerKey() string
	Endpoint() string                      // refactor
	AEndp() (ae service.Addr, error error) // refactor
}

type Schema 

type Schema struct {
	ID      string   `json:"id,omitempty"`      // ID from Indy/Ledger
	Name    string   `json:"name,omitempty"`    // name of the schema
	Version string   `json:"version,omitempty"` // version number in string
	Attrs   []string `json:"attrs,omitempty"`   // attribute string list
	Stored  *Future  `json:"-"`                 // info from ledger
}

func (*Schema) Create 

func (s *Schema) Create(DID string) (err error)

func (*Schema) FromLedger 

func (s *Schema) FromLedger(DID string) (err error)

func (*Schema) LazySchema 

func (s *Schema) LazySchema() string

func (*Schema) ToLedger 

func (s *Schema) ToLedger(wallet int, DID string) error

func (*Schema) ValidID 

func (s *Schema) ValidID() string

type State 

type State uint32
const (
	Consumed State
)

type Type 

type Type int

Type of the agent instance. In most cases it's Cloud Agent (CA). Which is the the default value.

type Wallet 

type Wallet struct {
	Config      wallet.Config
	Credentials wallet.Credentials
	// contains filtered or unexported fields
}

func NewRawWalletCfg 

func NewRawWalletCfg(name, key string) (w *Wallet)

func NewWalletCfg 

func NewWalletCfg(name, key string) (w *Wallet)

func (*Wallet) Close 

func (w *Wallet) Close(handle int) (f *Future)

func (*Wallet) Create 

func (w *Wallet) Create() (exist bool)

func (*Wallet) Exists 

func (w *Wallet) Exists(worker bool) bool

func (*Wallet) ID 

func (w *Wallet) ID() string

func (*Wallet) Key 

func (w *Wallet) Key() string

func (*Wallet) Open 

func (w *Wallet) Open() (f *Future)

func (*Wallet) SetID 

func (w *Wallet) SetID(id string)

func (*Wallet) SetKey 

func (w *Wallet) SetKey(key string)

func (*Wallet) SetKeyMethod 

func (w *Wallet) SetKeyMethod(m string)

func (*Wallet) StartCreation 

func (w *Wallet) StartCreation() (f *Future)

func (*Wallet) SyncClose 

func (w *Wallet) SyncClose(handle int) (err error)

func (*Wallet) SyncOpen 

func (w *Wallet) SyncOpen() int

func (*Wallet) UniqueID 

func (w *Wallet) UniqueID() string

func (Wallet) WorkerWallet 

func (w Wallet) WorkerWallet() *Wallet

WorkerWallet makes a copy of the wallet cfg, normally CA`s wallet

func (Wallet) WorkerWalletBy 

func (w Wallet) WorkerWalletBy(suffix string) *Wallet

WorkerWalletBy makes a copy of the wallet cfg which name ends with suffix

type WalletMap 

type WalletMap map[string]*Handle

Source Files

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