wgcfg: improve SymmetricKey docs

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
This commit is contained in:
David Crawshaw 2020-03-31 21:28:56 +11:00 committed by David Crawshaw
parent 024d6ea4c2
commit d127a1647e
1 changed files with 1 additions and 2 deletions

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@ -229,8 +229,7 @@ func ParseSymmetricHexKey(s string) (SymmetricKey, error) {
return key, nil
}
// SymmetricKey is a chacha20poly1305 key.
// It is used by WireGuard to represent pre-shared symmetric keys.
// SymmetricKey is a 32-byte value used as a pre-shared key.
type SymmetricKey [chacha20poly1305.KeySize]byte
func (k SymmetricKey) Base64() string { return base64.StdEncoding.EncodeToString(k[:]) }