mpc

package
v0.7.3 Latest Latest
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 Go to latest Published: Nov 15, 2022 License: GPL-3.0 Imports: 27 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrDecodeAttestedCredentialData = Error{/* contains filtered or unexported fields */}
	ErrDecodeAuthenticatorData      = Error{/* contains filtered or unexported fields */}
	ErrDecodeCOSEKey                = Error{/* contains filtered or unexported fields */}
	ErrECDAANotSupported            = Error{/* contains filtered or unexported fields */}
	ErrEncodeAttestedCredentialData = Error{/* contains filtered or unexported fields */}
	ErrEncodeAuthenticatorData      = Error{/* contains filtered or unexported fields */}
	ErrGenerateChallenge            = Error{/* contains filtered or unexported fields */}
	ErrMarshalAttestationObject     = Error{/* contains filtered or unexported fields */}
	ErrOption                       = Error{/* contains filtered or unexported fields */}
	ErrNotImplemented               = Error{/* contains filtered or unexported fields */}
	ErrUnmarshalAttestationObject   = Error{/* contains filtered or unexported fields */}
	ErrVerifyAttestation            = Error{/* contains filtered or unexported fields */}
	ErrVerifyAuthentication         = Error{/* contains filtered or unexported fields */}
	ErrVerifyClientExtensionOutput  = Error{/* contains filtered or unexported fields */}
	ErrVerifyRegistration           = Error{/* contains filtered or unexported fields */}
	ErrVerifySignature              = Error{/* contains filtered or unexported fields */}
)

Categorical top-level errors

Functions

func AesDecryptWithKey 

func AesDecryptWithKey(aesKey, ciphertext []byte) ([]byte, error)

AesDecryptWithKey uses the give 32-bit key to decrypt plaintext.

func AesDecryptWithPassword 

func AesDecryptWithPassword(password string, ciphertext []byte) ([]byte, error)

AesDecryptWithPassword uses the give password to generate an aes key and encrypt plaintext.

func AesEncryptWithKey 

func AesEncryptWithKey(aesKey, plaintext []byte) ([]byte, error)

AesEncryptWithKey uses the give 32-bit key to encrypt plaintext.

func AesEncryptWithPassword 

func AesEncryptWithPassword(password string, plaintext []byte) ([]byte, error)

AesEncryptWithPassword uses the give password to generate an aes key and decrypt plaintext.

func DecodePublicKey 

func DecodePublicKey(coseKey *COSEKey) (crypto.PublicKey, error)

DecodePublicKey parses a crypto.PublicKey from a COSEKey

func NewAesKey 

func NewAesKey() ([]byte, error)

NewAesKey generates a new 32-bit key.

func SerializeSignature 

func SerializeSignature(sig *ecdsa.Signature) ([]byte, error)

SerializeSignature marshals an ECDSA signature to DER format for use with the CMP protocol

func SignatureFromBytes 

func SignatureFromBytes(sigStr []byte) (*ecdsa.Signature, error)

- The R and S values must be in the valid range for secp256k1 scalars:

  • Negative values are rejected
  • Zero is rejected
  • Values greater than or equal to the secp256k1 group order are rejected

func VerifySignature 

func VerifySignature(rawKey cbor.RawMessage, message, sig []byte) error

VerifySignature verifies a signature using a provided COSEKey, message, and signature

Types

type COSEAlgorithmIdentifier 

type COSEAlgorithmIdentifier int

COSEAlgorithmIdentifier is a number identifying a cryptographic algorithm 

const (
	AlgorithmRS1   COSEAlgorithmIdentifier = -65535
	AlgorithmRS512 COSEAlgorithmIdentifier = -259
	AlgorithmRS384 COSEAlgorithmIdentifier = -258
	AlgorithmRS256 COSEAlgorithmIdentifier = -257
	AlgorithmPS512 COSEAlgorithmIdentifier = -39
	AlgorithmPS384 COSEAlgorithmIdentifier = -38
	AlgorithmPS256 COSEAlgorithmIdentifier = -37
	AlgorithmES512 COSEAlgorithmIdentifier = -36
	AlgorithmES384 COSEAlgorithmIdentifier = -35
	AlgorithmEdDSA COSEAlgorithmIdentifier = -8
	AlgorithmES256 COSEAlgorithmIdentifier = -7
)

enum values for COSEAlgorithmIdentifier type

type COSEEllipticCurve 

type COSEEllipticCurve int

COSEEllipticCurve is a number identifying an elliptic curve 

const (
	CurveP256 COSEEllipticCurve = 1
	CurveP384 COSEEllipticCurve = 2
	CurveP521 COSEEllipticCurve = 3
)

enum values for COSEEllipticCurve type

type COSEKey 

type COSEKey struct {
	Kty       int             `cbor:"1,keyasint,omitempty"`
	Kid       []byte          `cbor:"2,keyasint,omitempty"`
	Alg       int             `cbor:"3,keyasint,omitempty"`
	KeyOpts   int             `cbor:"4,keyasint,omitempty"`
	IV        []byte          `cbor:"5,keyasint,omitempty"`
	CrvOrNOrK cbor.RawMessage `cbor:"-1,keyasint,omitempty"` // K for symmetric keys, Crv for elliptic curve keys, N for RSA modulus
	XOrE      cbor.RawMessage `cbor:"-2,keyasint,omitempty"` // X for curve x-coordinate, E for RSA public exponent
	Y         cbor.RawMessage `cbor:"-3,keyasint,omitempty"` // Y for curve y-cooridate
	D         []byte          `cbor:"-4,keyasint,omitempty"`
}

COSEKey represents a key decoded from COSE format.

type COSEKeyType 

type COSEKeyType int

COSEKeyType is a number identifying a key type 

const (
	KeyTypeOKP COSEKeyType = 1
	KeyTypeEC2 COSEKeyType = 2
	KeyTypeRSA COSEKeyType = 3
)

enum values for COSEKeyType type

type Error 

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

Error represents an error in a WebAuthn relying party operation

func NewError 

func NewError(fmStr string, els ...interface{}) Error

NewError returns a new Error with a custom message

func (Error) Error 

func (e Error) Error() string

Error implements the error interface

func (Error) Is 

func (e Error) Is(target error) bool

Is establishes equality for error types

func (Error) Unwrap 

func (e Error) Unwrap() error

Unwrap allows for error unwrapping

func (Error) Wrap 

func (e Error) Wrap(err error) Error

Wrap returns a new error which contains the provided error wrapped with this error

type Network 

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

Network simulates a point-to-point network between different parties using Go channels. The same network is used by all processes, and can be reused for different protocols. When used with test.Handler, no interaction from the user is required beyond creating the network.

func NewNetwork 

func NewNetwork(parties party.IDSlice) *Network

func (*Network) Done 

func (n *Network) Done(id party.ID) chan struct{}

func (*Network) Next 

func (n *Network) Next(id party.ID) <-chan *protocol.Message

func (*Network) Quit 

func (n *Network) Quit(id party.ID)

func (*Network) Send 

func (n *Network) Send(msg *protocol.Message)

type Wallet 

type Wallet struct {
	ID party.ID

	PubKey      []byte
	Configs     map[party.ID]*cmp.Config
	ConfigsLock sync.Mutex
	Network     *Network
	Threshold   int
	// contains filtered or unexported fields
}

func GenerateWallet 

func GenerateWallet(cb common.MotorCallback, options ...WalletOption) (*Wallet, error)

GenerateWallet a new ECDSA private key shared among all the given participants.

func (*Wallet) Address 

func (w *Wallet) Address(id ...party.ID) (string, error)

Returns the Bech32 representation of the given party.

func (*Wallet) Config 

func (w *Wallet) Config() *cmp.Config

Config returns the configuration of this wallet.

func (*Wallet) CreateInitialShards 

func (w *Wallet) CreateInitialShards() (dscShard, pskShard, recShard []byte, unused [][]byte, err error)

func (*Wallet) GetSigners 

func (w *Wallet) GetSigners() party.IDSlice

GetSigners returns the list of signers for the given message.

func (*Wallet) Marshal 

func (w *Wallet) Marshal() ([]byte, error)

Marshal returns the JSON representation of the entire wallet.

func (*Wallet) PublicKey 

func (w *Wallet) PublicKey() ([]byte, error)

Returns the ECDSA public key of the given party.

func (*Wallet) PublicKeyBase58 

func (w *Wallet) PublicKeyBase58() (string, error)

Returns the ECDSA public key of the given party.

func (*Wallet) PublicKeyProto 

func (w *Wallet) PublicKeyProto() (*secp256k1.PubKey, error)

func (*Wallet) Refresh 

func (w *Wallet) Refresh(pl *pool.Pool) (*cmp.Config, error)

Refreshes all shares of an existing ECDSA private key.

func (*Wallet) Sign 

func (w *Wallet) Sign(m []byte) (*ecdsa.Signature, error)

Generates an ECDSA signature for messageHash.

func (*Wallet) Unmarshal 

func (w *Wallet) Unmarshal(buf []byte) error

Unmarshal unmarshals the given JSON into the wallet.

func (*Wallet) Verify 

func (w *Wallet) Verify(m []byte, sig []byte) bool

Verifies an ECDSA signature for messageHash.

type WalletOption 

type WalletOption func(*walletConfig)

WalletOption is a function that applies a configuration option to a walletConfig

func WithBase58PubKey added in v0.6.0 

func WithBase58PubKey(key string) WalletOption

func WithConfigs 

func WithConfigs(cnfs map[party.ID]*cmp.Config) WalletOption

WithConfigs sets the configs used for the MPC wallet

func WithParticipants 

func WithParticipants(participants ...party.ID) WalletOption

WithParticipants adds a list of participants to the wallet

func WithThreshold 

func WithThreshold(threshold int) WalletOption

WithThreshold sets the threshold of the MPC wallet

Source Files

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