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crypto.go
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crypto.go
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package e2e
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"encoding/pem"
"fmt"
"golang.org/x/crypto/ssh"
)
func generateKeyPairEcdsa() (*ecdsa.PrivateKey, error) {
k, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
return nil, fmt.Errorf("generating key pair: %v", err)
}
return k, nil
}
func pubFromPrivateKeyEcdsa(k *ecdsa.PrivateKey) ([]byte, error) {
pub, err := ssh.NewPublicKey(k.Public())
if err != nil {
return nil, err
}
return ssh.MarshalAuthorizedKey(pub), nil
}
func pemFromPrivateKeyEcdsa(k *ecdsa.PrivateKey) ([]byte, error) {
pk, err := x509.MarshalPKCS8PrivateKey(k)
if err != nil {
return nil, fmt.Errorf("marshalling private key to x509 PKCS 8 from private key: %v", err)
}
p := pem.Block{
Type: "PRIVATE KEY",
Bytes: pk,
}
return pem.EncodeToMemory(&p), nil
}