secp256k1fx

package
v1.10.6-rc.6 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Aug 25, 2023 License: BSD-3-Clause Imports: 22 Imported by: 77

Documentation

Index

Constants

View Source 
const (
	CostPerSignature uint64 = 1000
)

Variables

View Source 
var (
	ErrWrongVMType                    = errors.New("wrong vm type")
	ErrWrongTxType                    = errors.New("wrong tx type")
	ErrWrongOpType                    = errors.New("wrong operation type")
	ErrWrongUTXOType                  = errors.New("wrong utxo type")
	ErrWrongInputType                 = errors.New("wrong input type")
	ErrWrongCredentialType            = errors.New("wrong credential type")
	ErrWrongOwnerType                 = errors.New("wrong owner type")
	ErrMismatchedAmounts              = errors.New("utxo amount and input amount are not equal")
	ErrWrongNumberOfUTXOs             = errors.New("wrong number of utxos for the operation")
	ErrWrongMintCreated               = errors.New("wrong mint output created from the operation")
	ErrTimelocked                     = errors.New("output is time locked")
	ErrTooManySigners                 = errors.New("input has more signers than expected")
	ErrTooFewSigners                  = errors.New("input has less signers than expected")
	ErrInputOutputIndexOutOfBounds    = errors.New("input referenced a nonexistent address in the output")
	ErrInputCredentialSignersMismatch = errors.New("input expected a different number of signers than provided in the credential")
	ErrWrongSig                       = errors.New("wrong signature")
)
View Source 
var (
	ErrNilInput                    = errors.New("nil input")
	ErrInputIndicesNotSortedUnique = errors.New("address indices not sorted and unique")
)
View Source 
var (
	ErrNilOutput            = errors.New("nil output")
	ErrOutputUnspendable    = errors.New("output is unspendable")
	ErrOutputUnoptimized    = errors.New("output representation should be optimized")
	ErrAddrsNotSortedUnique = errors.New("addresses not sorted and unique")
	ErrMarshal              = errors.New("cannot marshal without ctx")
)
View Source 
var ErrNilCredential = errors.New("nil credential")
View Source 
var ErrNoValueInput = errors.New("input has no value")
View Source 
var (
	ErrNoValueOutput = errors.New("output has no value")
)
View Source 
var (

	// ID that this Fx uses when labeled
	ID = ids.ID{'s', 'e', 'c', 'p', '2', '5', '6', 'k', '1', 'f', 'x'}
)

Functions

This section is empty.

Types

type Credential 

type Credential struct {
	Sigs [][secp256k1.SignatureLen]byte `serialize:"true" json:"signatures"`
}

func (*Credential) MarshalJSON 

func (cr *Credential) MarshalJSON() ([]byte, error)

MarshalJSON marshals [cr] to JSON The string representation of each signature is created using the hex formatter

func (*Credential) Verify 

func (cr *Credential) Verify() error

type Factory 

type Factory struct{}

func (*Factory) New 

func (*Factory) New(logging.Logger) (interface{}, error)

type Fx 

type Fx struct {
	VM          VM
	SECPFactory secp256k1.Factory
	// contains filtered or unexported fields
}

Fx describes the secp256k1 feature extension

func (*Fx) Bootstrapped 

func (fx *Fx) Bootstrapped() error

func (*Fx) Bootstrapping 

func (*Fx) Bootstrapping() error

func (*Fx) CreateOutput 

func (*Fx) CreateOutput(amount uint64, ownerIntf interface{}) (interface{}, error)

CreateOutput creates a new output with the provided control group worth the specified amount

func (*Fx) Initialize 

func (fx *Fx) Initialize(vmIntf interface{}) error

func (*Fx) InitializeVM 

func (fx *Fx) InitializeVM(vmIntf interface{}) error

func (*Fx) VerifyCredentials 

func (fx *Fx) VerifyCredentials(utx UnsignedTx, in *Input, cred *Credential, out *OutputOwners) error

VerifyCredentials ensures that the output can be spent by the input with the credential. A nil return values means the output can be spent.

func (*Fx) VerifyOperation 

func (fx *Fx) VerifyOperation(txIntf, opIntf, credIntf interface{}, utxosIntf []interface{}) error

func (*Fx) VerifyPermission 

func (fx *Fx) VerifyPermission(txIntf, inIntf, credIntf, ownerIntf interface{}) error

VerifyPermission returns nil iff [credIntf] proves that [controlGroup] assents to [txIntf]

func (*Fx) VerifySpend 

func (fx *Fx) VerifySpend(utx UnsignedTx, in *TransferInput, cred *Credential, utxo *TransferOutput) error

VerifySpend ensures that the utxo can be sent to any address

func (*Fx) VerifyTransfer 

func (fx *Fx) VerifyTransfer(txIntf, inIntf, credIntf, utxoIntf interface{}) error

type Input 

type Input struct {
	// This input consumes an output, which has an owner list.
	// This input will be spent with a list of signatures.
	// SignatureList[i] is the signature of OwnerList[i]
	SigIndices []uint32 `serialize:"true" json:"signatureIndices"`
}

func (*Input) Cost 

func (in *Input) Cost() (uint64, error)

func (*Input) Verify 

func (in *Input) Verify() error

Verify this input is syntactically valid

type Keychain 

type Keychain struct {

	// These can be used to iterate over. However, they should not be modified externally.
	Addrs set.Set[ids.ShortID]
	Keys  []*secp256k1.PrivateKey
	// contains filtered or unexported fields
}

Keychain is a collection of keys that can be used to spend outputs

func NewKeychain 

func NewKeychain(keys ...*secp256k1.PrivateKey) *Keychain

NewKeychain returns a new keychain containing [keys]

func (*Keychain) Add 

func (kc *Keychain) Add(key *secp256k1.PrivateKey)

Add a new key to the key chain

func (Keychain) Addresses 

func (kc Keychain) Addresses() set.Set[ids.ShortID]

Addresses returns a list of addresses this keychain manages

func (Keychain) Get 

func (kc Keychain) Get(id ids.ShortID) (keychain.Signer, bool)

Get a key from the keychain. If the key is unknown, return a pointer to an empty key. In both cases also return a boolean telling whether the key is known.

func (*Keychain) Match 

func (kc *Keychain) Match(owners *OutputOwners, time uint64) ([]uint32, []*secp256k1.PrivateKey, bool)

Match attempts to match a list of addresses up to the provided threshold

func (*Keychain) New 

func (kc *Keychain) New() (*secp256k1.PrivateKey, error)

New returns a newly generated private key

func (*Keychain) PrefixedString 

func (kc *Keychain) PrefixedString(prefix string) string

PrefixedString returns the key chain as a string representation with [prefix] added before every line.

func (*Keychain) Spend 

func (kc *Keychain) Spend(out verify.Verifiable, time uint64) (verify.Verifiable, []*secp256k1.PrivateKey, error)

Spend attempts to create an input

func (*Keychain) String 

func (kc *Keychain) String() string

type MintOperation 

type MintOperation struct {
	MintInput      Input          `serialize:"true" json:"mintInput"`
	MintOutput     MintOutput     `serialize:"true" json:"mintOutput"`
	TransferOutput TransferOutput `serialize:"true" json:"transferOutput"`
}

func (*MintOperation) Cost 

func (op *MintOperation) Cost() (uint64, error)

func (*MintOperation) InitCtx 

func (op *MintOperation) InitCtx(ctx *snow.Context)

func (*MintOperation) Outs 

func (op *MintOperation) Outs() []verify.State

func (*MintOperation) Verify 

func (op *MintOperation) Verify() error

type MintOutput 

type MintOutput struct {
	verify.IsState `json:"-"`

	OutputOwners `serialize:"true"`
}

func (*MintOutput) Verify 

func (out *MintOutput) Verify() error

type OutputOwners 

type OutputOwners struct {
	verify.IsNotState `json:"-"`

	Locktime  uint64        `serialize:"true" json:"locktime"`
	Threshold uint32        `serialize:"true" json:"threshold"`
	Addrs     []ids.ShortID `serialize:"true" json:"addresses"`
	// contains filtered or unexported fields
}

func (*OutputOwners) Addresses 

func (out *OutputOwners) Addresses() [][]byte

Addresses returns the addresses that manage this output

func (*OutputOwners) AddressesSet 

func (out *OutputOwners) AddressesSet() set.Set[ids.ShortID]

AddressesSet returns addresses as a set

func (*OutputOwners) Equals 

func (out *OutputOwners) Equals(other *OutputOwners) bool

Equals returns true if the provided owners create the same condition

func (*OutputOwners) Fields 

func (out *OutputOwners) Fields() (map[string]interface{}, error)

Fields returns JSON keys in a map that can be used with marshal JSON to serialize OutputOwners struct

func (*OutputOwners) InitCtx 

func (out *OutputOwners) InitCtx(ctx *snow.Context)

InitCtx assigns the OutputOwners.ctx object to given [ctx] object Must be called at least once for MarshalJSON to work successfully

func (*OutputOwners) MarshalJSON 

func (out *OutputOwners) MarshalJSON() ([]byte, error)

MarshalJSON marshals OutputOwners as JSON with human readable addresses. OutputOwners.InitCtx must be called before marshalling this or one of the parent objects to json. Uses the OutputOwners.ctx method to format the addresses. Returns errMarshal error if OutputOwners.ctx is not set.

func (*OutputOwners) Sort 

func (out *OutputOwners) Sort()

func (*OutputOwners) Verify 

func (out *OutputOwners) Verify() error

type TestTx 

type TestTx struct{ UnsignedBytes []byte }

TestTx is a minimal implementation of a Tx

func (*TestTx) Bytes 

func (tx *TestTx) Bytes() []byte

UnsignedBytes returns Bytes

type TestVM 

type TestVM struct {
	Clk   mockable.Clock
	Codec codec.Registry
	Log   logging.Logger
}

TestVM is a minimal implementation of a VM

func (*TestVM) Clock 

func (vm *TestVM) Clock() *mockable.Clock

func (*TestVM) CodecRegistry 

func (vm *TestVM) CodecRegistry() codec.Registry

func (*TestVM) Logger 

func (vm *TestVM) Logger() logging.Logger

type TransferInput 

type TransferInput struct {
	Amt   uint64 `serialize:"true" json:"amount"`
	Input `serialize:"true"`
}

func (*TransferInput) Amount 

func (in *TransferInput) Amount() uint64

Amount returns the quantity of the asset this input produces

func (*TransferInput) InitCtx 

func (*TransferInput) InitCtx(*snow.Context)

func (*TransferInput) Verify 

func (in *TransferInput) Verify() error

Verify this input is syntactically valid

type TransferOutput 

type TransferOutput struct {
	verify.IsState `json:"-"`

	Amt uint64 `serialize:"true" json:"amount"`

	OutputOwners `serialize:"true"`
}

func (*TransferOutput) Amount 

func (out *TransferOutput) Amount() uint64

Amount returns the quantity of the asset this output consumes

func (*TransferOutput) MarshalJSON 

func (out *TransferOutput) MarshalJSON() ([]byte, error)

MarshalJSON marshals Amt and the embedded OutputOwners struct into a JSON readable format If OutputOwners cannot be serialized then this will return error

func (*TransferOutput) Owners 

func (out *TransferOutput) Owners() interface{}

func (*TransferOutput) Verify 

func (out *TransferOutput) Verify() error

type UnsignedTx added in v1.8.4 

type UnsignedTx interface {
	Bytes() []byte
}

UnsignedTx that this Fx is supporting

type VM 

type VM interface {
	CodecRegistry() codec.Registry
	Clock() *mockable.Clock
	Logger() logging.Logger
}

VM that this Fx must be run by

Source Files

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