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ed25519-public.go
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ed25519-public.go
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/*
© 2022–present Harald Rudell <harald.rudell@gmail.com> (https://haraldrudell.github.io/haraldrudell/)
ISC License
*/
package parlca
import (
"crypto/ed25519"
"crypto/x509"
"encoding/pem"
"github.com/haraldrudell/parl"
"github.com/haraldrudell/parl/perrors"
)
type Ed25519PublicKey struct {
ed25519.PublicKey // Equal()
}
var _ parl.PublicKey = &Ed25519PublicKey{}
func (key *Ed25519PublicKey) DER() (publicKeyDer parl.PublicKeyDer, err error) {
if len(key.PublicKey) == 0 {
err = perrors.New("Uninitialized ed25519 public key")
return
} else if len(key.PublicKey) != ed25519.PublicKeySize {
err = perrors.Errorf("Bad ed25519 public key length: %d exp: %d", len(key.PublicKey), ed25519.PublicKeySize)
return
}
var byts []byte
if byts, err = x509.MarshalPKIXPublicKey(key.PublicKey); perrors.IsPF(&err, "x509.MarshalPKIXPublicKey %w", err) {
return
}
publicKeyDer = byts
return
}
func (key *Ed25519PublicKey) DERe() (publicKeyDer parl.PublicKeyDer) {
var err error
if publicKeyDer, err = key.DER(); err != nil {
panic(err)
}
return
}
func (key *Ed25519PublicKey) PEM() (pemBytes parl.PemBytes, err error) {
block := pem.Block{
Type: pemPublicKeyType,
}
if block.Bytes, err = key.DER(); err != nil {
return
}
pemBytes = append([]byte(PemText()), pem.EncodeToMemory(&block)...)
return
}
func (key *Ed25519PublicKey) PEMe() (pemBytes parl.PemBytes) {
var err error
if pemBytes, err = key.PEM(); err != nil {
panic(err)
}
return
}
func (key *Ed25519PublicKey) Algo() (algo x509.PublicKeyAlgorithm) {
return x509.Ed25519
}