delete unused addresses for imported key and account

[bytom/bytom.git] / crypto / ed25519 / chainkd / chainkd.go

diff --git a/crypto/ed25519/chainkd/chainkd.go b/crypto/ed25519/chainkd/chainkd.go
index 5d8ca4e..23f6fc2 100644 (file)
--- a/crypto/ed25519/chainkd/chainkd.go
+++ b/crypto/ed25519/chainkd/chainkd.go
@@ -8,6 +8,7 @@ import (
 
        "github.com/bytom/crypto/ed25519"
        "github.com/bytom/crypto/ed25519/ecmath"
+       "bytes"
 )
 
 type (
@@ -17,7 +18,16 @@ type (
        XPub [64]byte
 )
 
-var one = [32]byte{1}
+// CompareTwoXPubs
+func CompareTwoXPubs(a, b []XPub) int {
+       for i, xpub := range a {
+               result := bytes.Compare(xpub[:], b[i][:])
+               if result != 0 {
+                       return result
+               }
+       }
+       return 0
+}
 
 // NewXPrv takes a source of random bytes and produces a new XPrv.
 // If r is nil, crypto/rand.Reader is used.