ed521

package

v1.0.1 Latest Latest Go to latest Published: May 8, 2026 License: Apache-2.0 Imports: 12 Imported by: 0

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Valid go.mod file
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Stable version
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Repository

github.com/barklan/go-cryptobin

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Documentation ¶

Index ¶

Constants
Variables
func MarshalPrivateKey(priv *PrivateKey) ([]byte, error)
func MarshalPublicKey(pub *PublicKey) ([]byte, error)
func PrivateKeyTo(key *PrivateKey) []byte
func PublicKeyTo(key *PublicKey) []byte
func Sign(rand io.Reader, priv *PrivateKey, msg []byte) ([]byte, error)
func Verify(pub *PublicKey, msg, signature []byte) (bool, error)
func VerifyWithOptions(publicKey *PublicKey, message, sig []byte, opts crypto.SignerOpts) error
type Options
- func (o *Options) HashFunc() crypto.Hash
type PrivateKey
type PublicKey
- func NewPublicKey(data []byte) (*PublicKey, error)
- func ParsePublicKey(derBytes []byte) (pub *PublicKey, err error)
- func (pub *PublicKey) Equal(x crypto.PublicKey) bool
- func (pub *PublicKey) Verify(message, sig []byte) bool
type SchemeID

Constants ¶

View Source

const (
	// ContextMaxSize is the maximum length (in bytes) allowed for context.
	ContextMaxSize = 255
	// PublicKeySize is the size, in bytes, of public keys as used in this package.
	PublicKeySize = 66
	// PrivateKeySize is the size, in bytes, of private keys as used in this package.
	PrivateKeySize = 132
	// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
	SignatureSize = 132
	// SeedSize is the size, in bytes, of private key seeds.
	SeedSize = 66
)

Variables ¶

View Source

var (
	ErrInvalidASN1 = errors.New("go-cryptobin/ed521: invalid ASN.1 encoding")
)

Functions ¶

func MarshalPrivateKey ¶

func MarshalPrivateKey(priv *PrivateKey) ([]byte, error)

Marshal PrivateKey to der

func MarshalPublicKey ¶

func MarshalPublicKey(pub *PublicKey) ([]byte, error)

Marshal PublicKey to der

func PrivateKeyTo ¶

func PrivateKeyTo(key *PrivateKey) []byte

return PrivateKey data

func PublicKeyTo ¶

func PublicKeyTo(key *PublicKey) []byte

return PublicKey data

func Sign ¶

func Sign(rand io.Reader, priv *PrivateKey, msg []byte) ([]byte, error)

sign data and return marshal plain data

func Verify ¶

func Verify(pub *PublicKey, msg, signature []byte) (bool, error)

Verify marshaled plain data

func VerifyWithOptions ¶

func VerifyWithOptions(publicKey *PublicKey, message, sig []byte, opts crypto.SignerOpts) error

VerifyWithOptions reports whether sig is a valid signature of message by publicKey.

Types ¶

type Options ¶

type Options struct {
	// Hash must be crypto.Hash(0) for both Ed521 and Ed521Ph.
	Hash crypto.Hash

	// Context is an optional domain separation string for signing.
	// Its length must be less or equal than 255 bytes.
	Context string

	// Scheme is an identifier for choosing a signature scheme.
	Scheme SchemeID
}

Options implements crypto.SignerOpts and augments with parameters that are specific to the Ed521 signature schemes.

func (*Options) HashFunc ¶

func (o *Options) HashFunc() crypto.Hash

HashFunc returns o.Hash.

type PrivateKey ¶

type PrivateKey struct {
	PublicKey

	D *big.Int
}

func GenerateKey ¶

func GenerateKey(rand io.Reader) (*PrivateKey, error)

GenerateKey returns Ed521 PrivateKey

func NewKeyFromBytes ¶

func NewKeyFromBytes(bytes []byte) (*PrivateKey, error)

New a private key from bytes

func NewKeyFromSeed ¶

func NewKeyFromSeed(seed []byte) (*PrivateKey, error)

New a private key from seed bytes

func NewPrivateKey ¶

func NewPrivateKey(d []byte) (*PrivateKey, error)

New a private key from key data bytes

func ParsePrivateKey ¶

func ParsePrivateKey(der []byte) (*PrivateKey, error)

Parse PrivateKey der

func (*PrivateKey) Bytes ¶

func (priv *PrivateKey) Bytes() []byte

func (*PrivateKey) Equal ¶

func (priv *PrivateKey) Equal(x crypto.PrivateKey) bool

Equal reports whether priv and x have the same value.

func (*PrivateKey) Public ¶

func (priv *PrivateKey) Public() crypto.PublicKey

Public returns the public key corresponding to priv.

func (*PrivateKey) Seed ¶

func (priv *PrivateKey) Seed() []byte

func (*PrivateKey) Sign ¶

func (priv *PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) ([]byte, error)

Sign creates a signature for message

type PublicKey ¶

type PublicKey struct {
	elliptic.Curve

	X, Y *big.Int
}

func NewPublicKey ¶

func NewPublicKey(data []byte) (*PublicKey, error)

New a PublicKey from publicKey data

func ParsePublicKey ¶

func ParsePublicKey(derBytes []byte) (pub *PublicKey, err error)

Parse PublicKey der

func (*PublicKey) Equal ¶

func (pub *PublicKey) Equal(x crypto.PublicKey) bool

Equal reports whether pub and x have the same value.

func (*PublicKey) Verify ¶

func (pub *PublicKey) Verify(message, sig []byte) bool

Verify verifies the signature of message for a given public key

type SchemeID ¶

type SchemeID uint

SchemeID is an identifier for each signature scheme.

const (
	ED521 SchemeID = iota
	ED521Ph
)

Source Files ¶

View all Source files

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