crypto

package
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 Go to latest Published: Apr 3, 2024 License: MIT Imports: 15 Imported by: 0

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Index

Constants

View Source 
const PrivateKeySize = 32
View Source 
const PublicKeySize = 32

Variables

View Source 
var TxProofV2DomainSeparatorHash = Keccak256([]byte("TXPROOF_V2")) // HASH_KEY_TXPROOF_V2

Functions

func BytesToScalar 

func BytesToScalar(buf []byte) *edwards25519.Scalar

func CompareConsensusPublicKeyBytes 

func CompareConsensusPublicKeyBytes(a, b *PublicKeyBytes) int

CompareConsensusPublicKeyBytes Compares public keys in a special consensus specific way

func DeterministicScalar 

func DeterministicScalar(entropy []byte) *edwards25519.Scalar

DeterministicScalar consensus way of generating a deterministic scalar from given entropy Slice entropy will have data appended

func GenerateTxProofV1 

func GenerateTxProofV1(prefixHash types.Hash, txKey PrivateKey, recipientViewPublicKey PublicKey, recipientSpendPublicKey PublicKey) (derivation PublicKey, signature *Signature)

func GenerateTxProofV2 

func GenerateTxProofV2(prefixHash types.Hash, txKey PrivateKey, recipientViewPublicKey PublicKey, recipientSpendPublicKey PublicKey) (derivation PublicKey, signature *Signature)

func GetDerivationSharedDataAndViewTagForOutputIndexNoAllocate 

func GetDerivationSharedDataAndViewTagForOutputIndexNoAllocate(k PublicKeyBytes, outputIndex uint64, hasher *sha3.HasherState) (edwards25519.Scalar, uint8)

GetDerivationSharedDataAndViewTagForOutputIndexNoAllocate Special version of GetDerivationSharedDataAndViewTagForOutputIndex

func GetDerivationViewTagForOutputIndex 

func GetDerivationViewTagForOutputIndex(derivation PublicKey, outputIndex uint64) uint8

func GetEdwards25519Point 

func GetEdwards25519Point() *edwards25519.Point

func GetEdwards25519Scalar 

func GetEdwards25519Scalar() *edwards25519.Scalar

func GetKeccak256Hasher 

func GetKeccak256Hasher() *sha3.HasherState

func HashFastSum 

func HashFastSum(hash *sha3.HasherState, b []byte) []byte

HashFastSum sha3.Sum clones the state by allocating memory. prevent that. b must be pre-allocated to the expected size, or larger

func HashToPoint 

func HashToPoint(publicKey PublicKey) *edwards25519.Point

func HashToScalar 

func HashToScalar(data ...[]byte) *edwards25519.Scalar

func HashToScalarNoAllocate 

func HashToScalarNoAllocate(data ...[]byte) edwards25519.Scalar

func HashToScalarNoAllocateSingle 

func HashToScalarNoAllocateSingle(data []byte) edwards25519.Scalar

func Keccak256 

func Keccak256(data ...[]byte) (result types.Hash)

func Keccak256Single 

func Keccak256Single(data []byte) (result types.Hash)

func PooledKeccak256 

func PooledKeccak256(data ...[]byte) (result types.Hash)

func PutEdwards25519Point 

func PutEdwards25519Point(p *edwards25519.Point)

func PutEdwards25519Scalar 

func PutEdwards25519Scalar(s *edwards25519.Scalar)

func PutKeccak256Hasher 

func PutKeccak256Hasher(h *sha3.HasherState)

func RandomScalar 

func RandomScalar() *edwards25519.Scalar

func VerifyMessageSignature 

func VerifyMessageSignature(prefixHash types.Hash, publicKey PublicKey, signature *Signature) bool

func VerifyMessageSignatureSplit 

func VerifyMessageSignatureSplit(prefixHash types.Hash, commPublicKey, signPublicKey PublicKey, signature *Signature) bool

VerifyMessageSignatureSplit Allows specifying a different signer key than for the rest. Use VerifyMessageSignature in all other cases

Types

type BinaryTreeHash 

type BinaryTreeHash []types.Hash

func (BinaryTreeHash) MainBranch 

func (t BinaryTreeHash) MainBranch() (mainBranch []types.Hash)

func (BinaryTreeHash) RootHash 

func (t BinaryTreeHash) RootHash() (rootHash types.Hash)

type KeyPair 

type KeyPair struct {
	PrivateKey PrivateKey
	PublicKey  PublicKey
}

func NewKeyPairFromPrivate 

func NewKeyPairFromPrivate(privateKey PrivateKey) *KeyPair

type PrivateKey 

type PrivateKey interface {
	AsSlice() PrivateKeySlice
	AsBytes() PrivateKeyBytes
	AsScalar() *PrivateKeyScalar

	PublicKey() PublicKey

	// GetDerivation derives a secret via a peer PublicKey, ECDH
	GetDerivation(public PublicKey) PublicKey

	// GetDerivationCofactor derives a secret via a peer PublicKey, ECDH, making sure it is in the proper range (*8)
	GetDerivationCofactor(public PublicKey) PublicKey

	String() string
	UnmarshalJSON(b []byte) error
	MarshalJSON() ([]byte, error)
}

func GetDerivationSharedDataAndViewTagForOutputIndex 

func GetDerivationSharedDataAndViewTagForOutputIndex(derivation PublicKey, outputIndex uint64) (PrivateKey, uint8)

func GetDerivationSharedDataForOutputIndex 

func GetDerivationSharedDataForOutputIndex(derivation PublicKey, outputIndex uint64) PrivateKey

type PrivateKeyBytes 

type PrivateKeyBytes [PrivateKeySize]byte
var ZeroPrivateKeyBytes PrivateKeyBytes

func (*PrivateKeyBytes) AsBytes 

func (k *PrivateKeyBytes) AsBytes() PrivateKeyBytes

func (*PrivateKeyBytes) AsScalar 

func (k *PrivateKeyBytes) AsScalar() *PrivateKeyScalar

func (*PrivateKeyBytes) AsSlice 

func (k *PrivateKeyBytes) AsSlice() PrivateKeySlice

func (*PrivateKeyBytes) GetDerivation 

func (k *PrivateKeyBytes) GetDerivation(public PublicKey) PublicKey

func (*PrivateKeyBytes) GetDerivationCofactor 

func (k *PrivateKeyBytes) GetDerivationCofactor(public PublicKey) PublicKey

func (*PrivateKeyBytes) MarshalJSON 

func (k *PrivateKeyBytes) MarshalJSON() ([]byte, error)

func (*PrivateKeyBytes) PublicKey 

func (k *PrivateKeyBytes) PublicKey() PublicKey

func (*PrivateKeyBytes) Scan 

func (k *PrivateKeyBytes) Scan(src any) error

func (*PrivateKeyBytes) String 

func (k *PrivateKeyBytes) String() string

func (*PrivateKeyBytes) UnmarshalJSON 

func (k *PrivateKeyBytes) UnmarshalJSON(b []byte) error

func (*PrivateKeyBytes) Value 

func (k *PrivateKeyBytes) Value() (driver.Value, error)

type PrivateKeyScalar 

type PrivateKeyScalar edwards25519.Scalar

func PrivateKeyFromScalar 

func PrivateKeyFromScalar(scalar *edwards25519.Scalar) *PrivateKeyScalar

func (*PrivateKeyScalar) AsBytes 

func (p *PrivateKeyScalar) AsBytes() (buf PrivateKeyBytes)

func (*PrivateKeyScalar) AsScalar 

func (p *PrivateKeyScalar) AsScalar() *PrivateKeyScalar

func (*PrivateKeyScalar) AsSlice 

func (p *PrivateKeyScalar) AsSlice() PrivateKeySlice

func (*PrivateKeyScalar) GetDerivation 

func (p *PrivateKeyScalar) GetDerivation(public PublicKey) PublicKey

func (*PrivateKeyScalar) GetDerivationCofactor 

func (p *PrivateKeyScalar) GetDerivationCofactor(public PublicKey) PublicKey

func (*PrivateKeyScalar) MarshalJSON 

func (p *PrivateKeyScalar) MarshalJSON() ([]byte, error)

func (*PrivateKeyScalar) PublicKey 

func (p *PrivateKeyScalar) PublicKey() PublicKey

func (*PrivateKeyScalar) Scalar 

func (p *PrivateKeyScalar) Scalar() *edwards25519.Scalar

func (*PrivateKeyScalar) String 

func (p *PrivateKeyScalar) String() string

func (*PrivateKeyScalar) UnmarshalJSON 

func (p *PrivateKeyScalar) UnmarshalJSON(b []byte) error

type PrivateKeySlice 

type PrivateKeySlice []byte

func (*PrivateKeySlice) AsBytes 

func (k *PrivateKeySlice) AsBytes() (buf PrivateKeyBytes)

func (*PrivateKeySlice) AsScalar 

func (k *PrivateKeySlice) AsScalar() *PrivateKeyScalar

func (*PrivateKeySlice) AsSlice 

func (k *PrivateKeySlice) AsSlice() PrivateKeySlice

func (*PrivateKeySlice) GetDerivation 

func (k *PrivateKeySlice) GetDerivation(public PublicKey) PublicKey

func (*PrivateKeySlice) GetDerivationCofactor 

func (k *PrivateKeySlice) GetDerivationCofactor(public PublicKey) PublicKey

func (*PrivateKeySlice) MarshalJSON 

func (k *PrivateKeySlice) MarshalJSON() ([]byte, error)

func (*PrivateKeySlice) PublicKey 

func (k *PrivateKeySlice) PublicKey() PublicKey

func (*PrivateKeySlice) Scan 

func (k *PrivateKeySlice) Scan(src any) error

func (*PrivateKeySlice) String 

func (k *PrivateKeySlice) String() string

func (*PrivateKeySlice) UnmarshalJSON 

func (k *PrivateKeySlice) UnmarshalJSON(b []byte) error

func (*PrivateKeySlice) Value 

func (k *PrivateKeySlice) Value() (driver.Value, error)

type PublicKey 

type PublicKey interface {
	AsSlice() PublicKeySlice
	AsBytes() PublicKeyBytes
	AsPoint() *PublicKeyPoint

	String() string
	UnmarshalJSON(b []byte) error
	MarshalJSON() ([]byte, error)
}

func GetKeyImage 

func GetKeyImage(pair *KeyPair) PublicKey

type PublicKeyBytes 

type PublicKeyBytes [PublicKeySize]byte
var ZeroPublicKeyBytes PublicKeyBytes

func (*PublicKeyBytes) AsBytes 

func (k *PublicKeyBytes) AsBytes() PublicKeyBytes

func (*PublicKeyBytes) AsPoint 

func (k *PublicKeyBytes) AsPoint() *PublicKeyPoint

func (*PublicKeyBytes) AsSlice 

func (k *PublicKeyBytes) AsSlice() PublicKeySlice

func (*PublicKeyBytes) MarshalJSON 

func (k *PublicKeyBytes) MarshalJSON() ([]byte, error)

func (*PublicKeyBytes) Scan 

func (k *PublicKeyBytes) Scan(src any) error

func (*PublicKeyBytes) String 

func (k *PublicKeyBytes) String() string

func (*PublicKeyBytes) UnmarshalJSON 

func (k *PublicKeyBytes) UnmarshalJSON(b []byte) error

func (*PublicKeyBytes) Value 

func (k *PublicKeyBytes) Value() (driver.Value, error)

type PublicKeyPoint 

type PublicKeyPoint edwards25519.Point

func PublicKeyFromPoint 

func PublicKeyFromPoint(point *edwards25519.Point, _ ...any) *PublicKeyPoint

func (*PublicKeyPoint) Add 

func (k *PublicKeyPoint) Add(b *PublicKeyPoint) *PublicKeyPoint

func (*PublicKeyPoint) AsBytes 

func (k *PublicKeyPoint) AsBytes() (buf PublicKeyBytes)

func (*PublicKeyPoint) AsPoint 

func (k *PublicKeyPoint) AsPoint() *PublicKeyPoint

func (*PublicKeyPoint) AsSlice 

func (k *PublicKeyPoint) AsSlice() PublicKeySlice

func (*PublicKeyPoint) Cofactor 

func (k *PublicKeyPoint) Cofactor() *PublicKeyPoint

func (*PublicKeyPoint) MarshalJSON 

func (k *PublicKeyPoint) MarshalJSON() ([]byte, error)

func (*PublicKeyPoint) Multiply 

func (k *PublicKeyPoint) Multiply(b *PrivateKeyScalar) *PublicKeyPoint

func (*PublicKeyPoint) Point 

func (k *PublicKeyPoint) Point() *edwards25519.Point

func (*PublicKeyPoint) String 

func (k *PublicKeyPoint) String() string

func (*PublicKeyPoint) Subtract 

func (k *PublicKeyPoint) Subtract(b *PublicKeyPoint) *PublicKeyPoint

func (*PublicKeyPoint) UnmarshalJSON 

func (k *PublicKeyPoint) UnmarshalJSON(b []byte) error

type PublicKeySlice 

type PublicKeySlice []byte

func (*PublicKeySlice) AsBytes 

func (k *PublicKeySlice) AsBytes() (buf PublicKeyBytes)

func (*PublicKeySlice) AsPoint 

func (k *PublicKeySlice) AsPoint() *PublicKeyPoint

func (*PublicKeySlice) AsSlice 

func (k *PublicKeySlice) AsSlice() PublicKeySlice

func (*PublicKeySlice) MarshalJSON 

func (k *PublicKeySlice) MarshalJSON() ([]byte, error)

func (*PublicKeySlice) Scan 

func (k *PublicKeySlice) Scan(src any) error

func (*PublicKeySlice) String 

func (k *PublicKeySlice) String() string

func (*PublicKeySlice) UnmarshalJSON 

func (k *PublicKeySlice) UnmarshalJSON(b []byte) error

func (*PublicKeySlice) Value 

func (k *PublicKeySlice) Value() (driver.Value, error)

type Signature 

type Signature struct {
	// C hash of data in signature, also called e
	C *edwards25519.Scalar
	// R result of the signature, also called s
	R *edwards25519.Scalar
}

Signature Schnorr signature

func CreateMessageSignature 

func CreateMessageSignature(prefixHash types.Hash, key PrivateKey) *Signature

func CreateSignature 

func CreateSignature(handler SignatureSigningHandler, privateKey PrivateKey) *Signature

CreateSignature produces a Schnorr Signature using H = keccak

func NewSignatureFromBytes 

func NewSignatureFromBytes(buf []byte) *Signature

func (*Signature) Bytes 

func (s *Signature) Bytes() []byte

func (*Signature) Verify 

func (s *Signature) Verify(handler SignatureVerificationHandler, publicKey PublicKey) (ok bool, r *PublicKeyPoint)

Verify checks a Schnorr Signature using H = keccak

type SignatureComm 

type SignatureComm struct {
	Hash types.Hash
	Key  PublicKey
	Comm PublicKey
}

SignatureComm Used in normal message signatures

func (*SignatureComm) Bytes 

func (s *SignatureComm) Bytes() []byte

type SignatureComm_2 

type SignatureComm_2 struct {
	Message types.Hash
	// KeyDerivation D
	KeyDerivation PublicKey
	// RandomPublicKey X
	RandomPublicKey PublicKey
	// RandomDerivation Y
	RandomDerivation PublicKey
	// Separator Domain Separation
	Separator types.Hash
	// TransactionPublicKey R
	TransactionPublicKey PublicKey
	// RecipientViewPublicKey A
	RecipientViewPublicKey  PublicKey
	RecipientSpendPublicKey PublicKey
}

SignatureComm_2 Used in v1/v2 tx proofs

func (*SignatureComm_2) Bytes 

func (s *SignatureComm_2) Bytes() []byte

type SignatureComm_2_V1 

type SignatureComm_2_V1 struct {
	Message types.Hash
	// KeyDerivation D
	KeyDerivation PublicKey
	// RandomPublicKey X
	RandomPublicKey PublicKey
	// RandomDerivation Y
	RandomDerivation PublicKey
}

SignatureComm_2_V1 Used in v1 tx proofs

func (*SignatureComm_2_V1) Bytes 

func (s *SignatureComm_2_V1) Bytes() []byte

type SignatureSigningHandler 

type SignatureSigningHandler func(r PrivateKey) []byte

SignatureSigningHandler receives k, inserts it or a pubkey into its data, and produces a []byte buffer for Signing/Verifying

type SignatureVerificationHandler 

type SignatureVerificationHandler func(r PublicKey) []byte

SignatureVerificationHandler receives r = pubkey(k), inserts it into its data, and produces a []byte buffer for Signing/Verifying

Source Files

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