X-Git-Url: http://www.git.cypherpunks.ru/?p=gohpenc.git;a=blobdiff_plain;f=poly1305.go;fp=poly1305.go;h=3efbeb52748b379e123365b20c9c42be7552aac4;hp=0000000000000000000000000000000000000000;hb=d863cee82aad34900144198abf740bb7f75a4642;hpb=43162227c8405de5a2d835ee306459993ff0ba6d

diff --git a/poly1305.go b/poly1305.go
new file mode 100644
index 0000000..3efbeb5
--- /dev/null
+++ b/poly1305.go
@@ -0,0 +1,22 @@
+package main
+
+import (
+	"encoding/binary"
+
+	"golang.org/x/crypto/poly1305"
+)
+
+func writeWithPadding(p *poly1305.MAC, b []byte) {
+	p.Write(b)
+	if rem := len(b) % 16; rem != 0 {
+		var buf [16]byte
+		padLen := 16 - rem
+		p.Write(buf[:padLen])
+	}
+}
+
+func writeUint64(p *poly1305.MAC, n int) {
+	var buf [8]byte
+	binary.LittleEndian.PutUint64(buf[:], uint64(n))
+	p.Write(buf[:])
+}