crypto

package
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 Go to latest Published: Aug 9, 2024 License: MIT Imports: 13 Imported by: 2

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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 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)

RootHash Calculates the Merkle root hash of the tree

type KeyPair 

type KeyPair struct {
	PrivateKey PrivateKey
	PublicKey  PublicKey
}

func NewKeyPairFromPrivate 

func NewKeyPairFromPrivate(privateKey PrivateKey) *KeyPair

type MerkleProof 

type MerkleProof []types.Hash

func (MerkleProof) GetRoot 

func (proof MerkleProof) GetRoot(h types.Hash, index, count int) types.Hash

func (MerkleProof) Verify 

func (proof MerkleProof) Verify(h types.Hash, index, count int, rootHash types.Hash) bool

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)
}

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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