crypto

package
v0.2.0 Latest Latest
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 Go to latest Published: Jun 9, 2023 License: MIT Imports: 25 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// NonceBytes is the length of GCM nonce.
	NonceBytes = 12

	// KeyBytes is the length of GCM key.
	KeyBytes = 32
)
View Source 
const (
	AnysyncSpacePath = "m/SLIP-0021/anysync/space"
	AnysyncTreePath  = "m/SLIP-0021/anysync/tree/%s"
)

Variables

View Source 
var (
	ErrInvalidWordCount = errors.New("error invalid word count for mnemonic")
	ErrInvalidMnemonic  = errors.New("error invalid mnemonic")
)
View Source 
var ErrIncorrectKeyType = errors.New("incorrect key type")
View Source 
var ErrX25519DecryptionFailed = errors.New("failed decryption with x25519 key")

Functions

func DecodeBytesFromString 

func DecodeBytesFromString(str string) (bytes []byte, err error)

func DecodeKeyFromString 

func DecodeKeyFromString[T Key](str string, construct func([]byte) (T, error), def T) (T, error)

func DecryptX25519 

func DecryptX25519(privKey, pubKey *[32]byte, encrypted []byte) ([]byte, error)

DecryptX25519 takes a x25519 private and public key and decrypts the message

func Ed25519PrivateKeyToCurve25519 

func Ed25519PrivateKeyToCurve25519(pk ed25519.PrivateKey) []byte

Ed25519PrivateKeyToCurve25519 converts an Ed25519 private key to a Curve25519 private key This code is originally taken from here https://github.com/jorrizza/ed2curve25519/blob/master/ed2curve25519.go

func Ed25519PublicKeyToCurve25519 

func Ed25519PublicKeyToCurve25519(pk ed25519.PublicKey) []byte

Ed25519PublicKeyToCurve25519 converts an Ed25519 public key to a Curve25519 public key

func EncodeBytesToString 

func EncodeBytesToString(bytes []byte) string

func EncodeKeyToString 

func EncodeKeyToString[T Key](key T) (str string, err error)

func EncryptX25519 

func EncryptX25519(pubKey *[32]byte, msg []byte) []byte

EncryptX25519 takes a x25519 public key and encrypts the message

func GenerateEd25519Key 

func GenerateEd25519Key(src io.Reader) (PrivKey, PubKey, error)

GenerateEd25519Key generates a new ed25519 private and public key pair.

func GenerateRandomEd25519KeyPair 

func GenerateRandomEd25519KeyPair() (PrivKey, PubKey, error)

func IdFromSigningPubKey 

func IdFromSigningPubKey(pubKey PubKey) (peer.ID, error)

func KeyEquals 

func KeyEquals(k1, k2 Key) bool

Types

type AESKey 

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

func NewAES 

func NewAES() *AESKey

NewAES returns AESKey if err is nil and panics otherwise.

func NewRandomAES 

func NewRandomAES() (*AESKey, error)

NewRandomAES returns a random key.

func UnmarshallAESKey 

func UnmarshallAESKey(k []byte) (*AESKey, error)

UnmarshallAESKey returns a key by decoding bytes.

func UnmarshallAESKeyString 

func UnmarshallAESKeyString(k string) (*AESKey, error)

UnmarshallAESKeyString returns a key by decoding a base32-encoded string.

func (*AESKey) Bytes 

func (k *AESKey) Bytes() []byte

Bytes returns raw key bytes.

func (*AESKey) Decrypt 

func (k *AESKey) Decrypt(ciphertext []byte) ([]byte, error)

Decrypt uses key to perform AES-256 GCM decryption on ciphertext.

func (*AESKey) Encrypt 

func (k *AESKey) Encrypt(plaintext []byte) ([]byte, error)

Encrypt performs AES-256 GCM encryption on plaintext.

func (*AESKey) Equals 

func (k *AESKey) Equals(key Key) bool

func (*AESKey) Raw 

func (k *AESKey) Raw() ([]byte, error)

func (*AESKey) String 

func (k *AESKey) String() string

String returns the base32-encoded string representation of raw key bytes.

type DerivationResult 

type DerivationResult struct {
	MasterKey     PrivKey
	Identity      PrivKey
	OldAccountKey PrivKey
	MasterNode    slip10.Node
}

type Ed25519PrivKey 

type Ed25519PrivKey struct {
	// contains filtered or unexported fields
}

Ed25519PrivKey is an ed25519 private key.

func (*Ed25519PrivKey) Decrypt 

func (k *Ed25519PrivKey) Decrypt(msg []byte) ([]byte, error)

Decrypt decrypts the message

func (*Ed25519PrivKey) Equals 

func (k *Ed25519PrivKey) Equals(o Key) bool

Equals compares two ed25519 private keys.

func (*Ed25519PrivKey) GetPublic 

func (k *Ed25519PrivKey) GetPublic() PubKey

GetPublic returns an ed25519 public key from a private key.

func (*Ed25519PrivKey) LibP2P 

func (k *Ed25519PrivKey) LibP2P() (crypto.PrivKey, error)

LibP2P converts the key to libp2p format

func (*Ed25519PrivKey) Marshall 

func (k *Ed25519PrivKey) Marshall() ([]byte, error)

Marshall marshalls the key into proto

func (*Ed25519PrivKey) Raw 

func (k *Ed25519PrivKey) Raw() ([]byte, error)

Raw private key bytes.

func (*Ed25519PrivKey) Sign 

func (k *Ed25519PrivKey) Sign(msg []byte) ([]byte, error)

Sign returns a signature from an input message.

type Ed25519PubKey 

type Ed25519PubKey struct {
	// contains filtered or unexported fields
}

Ed25519PubKey is an ed25519 public key.

func (*Ed25519PubKey) Account 

func (k *Ed25519PubKey) Account() string

Account returns string representation of key in anytype account format

func (*Ed25519PubKey) Encrypt 

func (k *Ed25519PubKey) Encrypt(msg []byte) (data []byte, err error)

Encrypt message

func (*Ed25519PubKey) Equals 

func (k *Ed25519PubKey) Equals(o Key) bool

Equals compares two ed25519 public keys.

func (*Ed25519PubKey) LibP2P 

func (k *Ed25519PubKey) LibP2P() (crypto.PubKey, error)

LibP2P converts the key to libp2p format

func (*Ed25519PubKey) Marshall 

func (k *Ed25519PubKey) Marshall() ([]byte, error)

Marshall marshalls the key into proto

func (*Ed25519PubKey) Network 

func (k *Ed25519PubKey) Network() string

func (*Ed25519PubKey) PeerId 

func (k *Ed25519PubKey) PeerId() string

PeerId returns string representation of key for peer id

func (*Ed25519PubKey) Raw 

func (k *Ed25519PubKey) Raw() ([]byte, error)

Raw public key bytes.

func (*Ed25519PubKey) Storage 

func (k *Ed25519PubKey) Storage() []byte

Storage returns underlying byte storage

func (*Ed25519PubKey) Verify 

func (k *Ed25519PubKey) Verify(data []byte, sig []byte) (bool, error)

Verify checks a signature agains the input data.

type Key 

type Key interface {
	// Equals returns if the keys are equal
	Equals(Key) bool

	// Raw returns raw key
	Raw() ([]byte, error)
}

Key is an abstract interface for all types of keys

type KeyStorage 

type KeyStorage interface {
	PubKeyFromProto(protoBytes []byte) (PubKey, error)
}

func NewKeyStorage 

func NewKeyStorage() KeyStorage

type Mnemonic 

type Mnemonic string

func (Mnemonic) Bytes 

func (m Mnemonic) Bytes() ([]byte, error)

func (Mnemonic) DeriveKeys 

func (m Mnemonic) DeriveKeys(index uint32) (res DerivationResult, err error)

func (Mnemonic) Seed 

func (m Mnemonic) Seed() ([]byte, error)

type MnemonicGenerator 

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

func NewMnemonicGenerator 

func NewMnemonicGenerator() MnemonicGenerator

func (MnemonicGenerator) WithEntropy 

func (g MnemonicGenerator) WithEntropy(b []byte) (Mnemonic, error)

func (MnemonicGenerator) WithRandomEntropy 

func (g MnemonicGenerator) WithRandomEntropy(size int) (Mnemonic, error)

func (MnemonicGenerator) WithWordCount 

func (g MnemonicGenerator) WithWordCount(wc int) (Mnemonic, error)

type PrivKey 

type PrivKey interface {
	Key

	// Decrypt decrypts the message and returns the result
	Decrypt(message []byte) ([]byte, error)
	// Sign signs the raw bytes and returns the signature
	Sign([]byte) ([]byte, error)
	// GetPublic returns the associated public key
	GetPublic() PubKey
	// Marshall wraps key in proto encoding and marshalls it
	Marshall() ([]byte, error)
	// LibP2P returns libp2p model
	LibP2P() (crypto.PrivKey, error)
}

PrivKey is an interface for keys that should be used for signing and decryption

func NewEd25519PrivKey 

func NewEd25519PrivKey(privKey ed25519.PrivateKey) PrivKey

func NewSigningEd25519PrivKeyFromBytes 

func NewSigningEd25519PrivKeyFromBytes(bytes []byte) (PrivKey, error)

func UnmarshalEd25519PrivateKey 

func UnmarshalEd25519PrivateKey(data []byte) (PrivKey, error)

UnmarshalEd25519PrivateKey returns a private key from input bytes.

func UnmarshalEd25519PrivateKeyProto 

func UnmarshalEd25519PrivateKeyProto(bytes []byte) (PrivKey, error)

type PubKey 

type PubKey interface {
	Key

	// Encrypt encrypts the message and returns the result
	Encrypt(message []byte) ([]byte, error)
	// Verify verifies the signed message and the signature
	Verify(data []byte, sig []byte) (bool, error)
	// Marshall wraps key in proto encoding and marshalls it
	Marshall() ([]byte, error)
	// Storage returns underlying key storage
	Storage() []byte
	// Account returns string representation for anytype account
	Account() string
	// Network returns string representation for anytype network
	Network() string
	// PeerId returns string representation for peer id
	PeerId() string
	// LibP2P returns libp2p model
	LibP2P() (crypto.PubKey, error)
}

PubKey is the public key used to verify the signatures and decrypt messages

func DecodeAccountAddress 

func DecodeAccountAddress(address string) (PubKey, error)

func DecodePeerId 

func DecodePeerId(peerId string) (PubKey, error)

func NewEd25519PubKey 

func NewEd25519PubKey(pubKey ed25519.PublicKey) PubKey

func NewSigningEd25519PubKeyFromBytes 

func NewSigningEd25519PubKeyFromBytes(bytes []byte) (PubKey, error)

func UnmarshalEd25519PublicKey 

func UnmarshalEd25519PublicKey(data []byte) (PubKey, error)

UnmarshalEd25519PublicKey returns a public key from input bytes.

func UnmarshalEd25519PublicKeyProto 

func UnmarshalEd25519PublicKeyProto(bytes []byte) (PubKey, error)

type SymKey 

type SymKey interface {
	Key

	// Decrypt decrypts the message and returns the result
	Decrypt(message []byte) ([]byte, error)
	// Encrypt encrypts the message and returns the result
	Encrypt(message []byte) ([]byte, error)
}

func DeriveSymmetricKey 

func DeriveSymmetricKey(seed []byte, path string) (SymKey, error)

DeriveSymmetricKey derives a symmetric key from seed and path using slip-21

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