X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=src%2Fcypherpunks.ru%2Fgogost%2Finternal%2Fgost34112012%2Fhash.go;h=5f6b707d87a05a001326d464693406e10aa60672;hb=91562b3cf4aad503c493aa7b69abfbb07b46e63a;hp=5a8227cd309adc10112888bdd28a539974257bed;hpb=5733007c9d8416d7aec16324b788156168d2e7a6;p=gogost.git

diff --git a/src/cypherpunks.ru/gogost/internal/gost34112012/hash.go b/src/cypherpunks.ru/gogost/internal/gost34112012/hash.go
index 5a8227c..5f6b707 100644
--- a/src/cypherpunks.ru/gogost/internal/gost34112012/hash.go
+++ b/src/cypherpunks.ru/gogost/internal/gost34112012/hash.go
@@ -1,10 +1,9 @@
 // GoGOST -- Pure Go GOST cryptographic functions library
-// Copyright (C) 2015-2016 Sergey Matveev <stargrave@stargrave.org>
+// Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
+// the Free Software Foundation, version 3 of the License.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -19,11 +18,15 @@
 package gost34112012
 
 import (
+	"bytes"
 	"encoding/binary"
+	"errors"
 )
 
 const (
 	BlockSize = 64
+
+	MarshaledName = "STREEBOG"
 )
 
 var (
@@ -403,3 +406,43 @@ func l(data *[BlockSize]byte) *[BlockSize]byte {
 	}
 	return r
 }
+
+func (h *Hash) MarshalBinary() (data []byte, err error) {
+	data = make([]byte, len(MarshaledName)+1+8+3*BlockSize+len(h.buf))
+	copy(data, []byte(MarshaledName))
+	idx := len(MarshaledName)
+	data[idx] = byte(h.size)
+	idx += 1
+	binary.BigEndian.PutUint64(data[idx:idx+8], h.n)
+	idx += 8
+	copy(data[idx:], h.hsh[:])
+	idx += BlockSize
+	copy(data[idx:], h.chk[:])
+	idx += BlockSize
+	copy(data[idx:], h.tmp[:])
+	idx += BlockSize
+	copy(data[idx:], h.buf)
+	return
+}
+
+func (h *Hash) UnmarshalBinary(data []byte) error {
+	if len(data) < len(MarshaledName)+1+8+3*BlockSize {
+		return errors.New("too short data")
+	}
+	if !bytes.HasPrefix(data, []byte(MarshaledName)) {
+		return errors.New("no hash name prefix")
+	}
+	idx := len(MarshaledName)
+	h.size = int(data[idx])
+	idx += 1
+	h.n = binary.BigEndian.Uint64(data[idx : idx+8])
+	idx += 8
+	copy(h.hsh[:], data[idx:])
+	idx += BlockSize
+	copy(h.chk[:], data[idx:])
+	idx += BlockSize
+	copy(h.tmp[:], data[idx:])
+	idx += BlockSize
+	h.buf = data[idx:]
+	return nil
+}