79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
|
package nebula
|
||
|
|
|
||
|
|
import (
|
||
|
|
"crypto/ed25519"
|
||
|
|
"crypto/rand"
|
||
|
|
"fmt"
|
||
|
|
)
|
||
|
|
|
||
|
|
var (
|
||
|
|
sigPrivKeyPrefix = []byte("s0")
|
||
|
|
sigPubKeyPrefix = []byte("S0")
|
||
|
|
)
|
||
|
|
|
||
|
|
// SigningPrivateKey wraps an ed25519.PrivateKey to provide convenient text
|
||
|
|
// (un)marshaling methods.
|
||
|
|
type SigningPrivateKey ed25519.PrivateKey
|
||
|
|
|
||
|
|
// MarshalText implements the encoding.TextMarshaler interface.
|
||
|
|
func (k SigningPrivateKey) MarshalText() ([]byte, error) {
|
||
|
|
return encodeWithPrefix(sigPrivKeyPrefix, k), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// UnmarshalText implements the encoding.TextUnmarshaler interface.
|
||
|
|
func (k *SigningPrivateKey) UnmarshalText(b []byte) error {
|
||
|
|
b, err := decodeWithPrefix(sigPrivKeyPrefix, b)
|
||
|
|
if err != nil {
|
||
|
|
return fmt.Errorf("unmarshaling: %w", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
*k = SigningPrivateKey(b)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (k SigningPrivateKey) String() string {
|
||
|
|
b, err := k.MarshalText()
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
return string(b)
|
||
|
|
}
|
||
|
|
|
||
|
|
// SigningPublicKey wraps an ed25519.PublicKey to provide convenient text
|
||
|
|
// (un)marshaling methods.
|
||
|
|
type SigningPublicKey ed25519.PublicKey
|
||
|
|
|
||
|
|
// MarshalText implements the encoding.TextMarshaler interface.
|
||
|
|
func (pk SigningPublicKey) MarshalText() ([]byte, error) {
|
||
|
|
return encodeWithPrefix(sigPubKeyPrefix, pk), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// UnmarshalText implements the encoding.TextUnmarshaler interface.
|
||
|
|
func (pk *SigningPublicKey) UnmarshalText(b []byte) error {
|
||
|
|
b, err := decodeWithPrefix(sigPubKeyPrefix, b)
|
||
|
|
if err != nil {
|
||
|
|
return fmt.Errorf("unmarshaling: %w", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
*pk = SigningPublicKey(b)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (pk SigningPublicKey) String() string {
|
||
|
|
b, err := pk.MarshalText()
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
return string(b)
|
||
|
|
}
|
||
|
|
|
||
|
|
// GenerateSigningPair generates and returns a new key pair which can be used
|
||
|
|
// for signing arbitrary blobs of bytes.
|
||
|
|
func GenerateSigningPair() (SigningPublicKey, SigningPrivateKey) {
|
||
|
|
pub, priv, err := ed25519.GenerateKey(rand.Reader)
|
||
|
|
if err != nil {
|
||
|
|
panic(fmt.Errorf("generating ed25519 key: %w", err))
|
||
|
|
}
|
||
|
|
return SigningPublicKey(pub), SigningPrivateKey(priv)
|
||
|
|
}
|