crypto

package

v0.1.0 Latest Latest Go to latest Published: Sep 1, 2023 License: Apache-2.0, MIT Imports: 10 Imported by: 1

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Repository

github.com/statechannels/go-nitro

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Documentation ¶

Overview ¶

Package crypto contains types and functions for creating Ethereum private keys and accounts, and creating/recovering signatures made with such keys.

Index ¶

func GeneratePrivateKeyAndAddress() (types.Bytes, types.Address)
func GetAddressFromSecretKeyBytes(secretKeyBytes []byte) types.Address
func RecoverEthereumMessageSigner(message []byte, signature Signature) (common.Address, error)
type Signature
- func SignEthereumMessage(message []byte, secretKey []byte) (Signature, error)
- func SplitSignature(concatenatedSignature []byte) (signature Signature)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func GeneratePrivateKeyAndAddress ¶

func GeneratePrivateKeyAndAddress() (types.Bytes, types.Address)

GeneratePrivateKeyAndAddress generates a pseudo-random ECDSA secret key and its corresponding Ethereum address.

func GetAddressFromSecretKeyBytes ¶

func GetAddressFromSecretKeyBytes(secretKeyBytes []byte) types.Address

GetAddressFromSecretKeyBytes computes the Ethereum address corresponding to the supplied private key.

func RecoverEthereumMessageSigner ¶

func RecoverEthereumMessageSigner(message []byte, signature Signature) (common.Address, error)

RecoverEthereumMessageSigner accepts a message (bytestring) and signature generated by SignEthereumMessage. It reconstructs the appropriate digest and recovers an address via secp256k1 public key recovery

Types ¶

type Signature ¶

type Signature struct {
	R []byte
	S []byte
	V byte
}

Signature is an ECDSA signature

func SignEthereumMessage ¶

func SignEthereumMessage(message []byte, secretKey []byte) (Signature, error)

SignEthereumMessage accepts an arbitrary message, prepends a known message, hashes the result using keccak256 and calculates the secp256k1 signature of the hash using the provided secret key. The known message added to the input before hashing is "\x19Ethereum Signed Message:\n" + len(message). See https://github.com/ethereum/go-ethereum/pull/2940 and EIPs 191, 721.

func SplitSignature ¶

func SplitSignature(concatenatedSignature []byte) (signature Signature)

splitSignature takes a 65 bytes signature in the [R||S||V] format and returns the individual components

func (Signature) Equal ¶

func (s1 Signature) Equal(s2 Signature) bool

func (Signature) MarshalJSON ¶

func (s Signature) MarshalJSON() ([]byte, error)

func (Signature) ToHexString ¶

func (s Signature) ToHexString() string

ToHexString returns the signature as a hex string

func (*Signature) UnmarshalJSON ¶

func (s *Signature) UnmarshalJSON(b []byte) error

Source Files ¶

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