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refactor: use X25519 instead of ScalarBaseMult (#533)

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As suggested in https://pkg.go.dev/golang.org/x/crypto/curve25519#ScalarBaseMult,
use X25519 instead of ScalarBaseMult. When using Basepoint, it may employ
some precomputed values, enhancing performance.

Co-authored-by: Wade Simmons <wade@wades.im>
Co-authored-by: Wade Simmons <wadey@slack-corp.com>
This commit is contained in:
Manuel Romei
2021-10-12 18:03:43 +02:00
committed by GitHub
parent 34d002d695
commit 3a8f533b24
4 changed files with 32 additions and 16 deletions
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13
cmd/nebula-cert/sign.go
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@ -226,12 +226,17 @@ func signCert(args []string, out io.Writer, errOut io.Writer) error {
}
func x25519Keypair() ([]byte, []byte) {
var pubkey, privkey [32]byte
if _, err := io.ReadFull(rand.Reader, privkey[:]); err != nil {
privkey := make([]byte, 32)
if _, err := io.ReadFull(rand.Reader, privkey); err != nil {
panic(err)
}
curve25519.ScalarBaseMult(&pubkey, &privkey)
return pubkey[:], privkey[:]
pubkey, err := curve25519.X25519(privkey, curve25519.Basepoint)
if err != nil {
panic(err)
}
return pubkey, privkey
}
func signSummary() string {