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-rw-r--r--src/noise_helpers.go8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/noise_helpers.go b/src/noise_helpers.go
index 1e622a5..105f78f 100644
--- a/src/noise_helpers.go
+++ b/src/noise_helpers.go
@@ -47,6 +47,14 @@ func KDF3(key []byte, input []byte) (t0 [blake2s.Size]byte, t1 [blake2s.Size]byt
return
}
+func isZero(val []byte) bool {
+ var acc byte
+ for _, b := range val {
+ acc |= b
+ }
+ return acc == 0
+}
+
/* curve25519 wrappers */
func newPrivateKey() (sk NoisePrivateKey, err error) {