Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / bytom / crypto / ed25519 / chainkd / util.go

diff --git a/vendor/github.com/bytom/crypto/ed25519/chainkd/util.go b/vendor/github.com/bytom/crypto/ed25519/chainkd/util.go
new file mode 100644 (file)
index 0000000..194b20e
--- /dev/null
+++ b/vendor/github.com/bytom/crypto/ed25519/chainkd/util.go
@@ -0,0 +1,34 @@
+package chainkd
+
+import (
+       "io"
+
+       "github.com/bytom/crypto/ed25519"
+)
+
+// Utility functions
+
+func NewXKeys(r io.Reader) (xprv XPrv, xpub XPub, err error) {
+       xprv, err = NewXPrv(r)
+       if err != nil {
+               return
+       }
+       return xprv, xprv.XPub(), nil
+}
+
+func XPubKeys(xpubs []XPub) []ed25519.PublicKey {
+       res := make([]ed25519.PublicKey, 0, len(xpubs))
+       for _, xpub := range xpubs {
+               res = append(res, xpub.PublicKey())
+       }
+       return res
+}
+
+func DeriveXPubs(xpubs []XPub, path [][]byte) []XPub {
+       res := make([]XPub, 0, len(xpubs))
+       for _, xpub := range xpubs {
+               d := xpub.Derive(path)
+               res = append(res, d)
+       }
+       return res
+}