VOL-2112 move to voltha-lib-go
Change-Id: I3435b8acb982deeab6b6ac28e798d7722ad01d0a
diff --git a/vendor/golang.org/x/crypto/md4/md4.go b/vendor/golang.org/x/crypto/md4/md4.go
new file mode 100644
index 0000000..59d3480
--- /dev/null
+++ b/vendor/golang.org/x/crypto/md4/md4.go
@@ -0,0 +1,122 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package md4 implements the MD4 hash algorithm as defined in RFC 1320.
+//
+// Deprecated: MD4 is cryptographically broken and should should only be used
+// where compatibility with legacy systems, not security, is the goal. Instead,
+// use a secure hash like SHA-256 (from crypto/sha256).
+package md4 // import "golang.org/x/crypto/md4"
+
+import (
+ "crypto"
+ "hash"
+)
+
+func init() {
+ crypto.RegisterHash(crypto.MD4, New)
+}
+
+// The size of an MD4 checksum in bytes.
+const Size = 16
+
+// The blocksize of MD4 in bytes.
+const BlockSize = 64
+
+const (
+ _Chunk = 64
+ _Init0 = 0x67452301
+ _Init1 = 0xEFCDAB89
+ _Init2 = 0x98BADCFE
+ _Init3 = 0x10325476
+)
+
+// digest represents the partial evaluation of a checksum.
+type digest struct {
+ s [4]uint32
+ x [_Chunk]byte
+ nx int
+ len uint64
+}
+
+func (d *digest) Reset() {
+ d.s[0] = _Init0
+ d.s[1] = _Init1
+ d.s[2] = _Init2
+ d.s[3] = _Init3
+ d.nx = 0
+ d.len = 0
+}
+
+// New returns a new hash.Hash computing the MD4 checksum.
+func New() hash.Hash {
+ d := new(digest)
+ d.Reset()
+ return d
+}
+
+func (d *digest) Size() int { return Size }
+
+func (d *digest) BlockSize() int { return BlockSize }
+
+func (d *digest) Write(p []byte) (nn int, err error) {
+ nn = len(p)
+ d.len += uint64(nn)
+ if d.nx > 0 {
+ n := len(p)
+ if n > _Chunk-d.nx {
+ n = _Chunk - d.nx
+ }
+ for i := 0; i < n; i++ {
+ d.x[d.nx+i] = p[i]
+ }
+ d.nx += n
+ if d.nx == _Chunk {
+ _Block(d, d.x[0:])
+ d.nx = 0
+ }
+ p = p[n:]
+ }
+ n := _Block(d, p)
+ p = p[n:]
+ if len(p) > 0 {
+ d.nx = copy(d.x[:], p)
+ }
+ return
+}
+
+func (d0 *digest) Sum(in []byte) []byte {
+ // Make a copy of d0, so that caller can keep writing and summing.
+ d := new(digest)
+ *d = *d0
+
+ // Padding. Add a 1 bit and 0 bits until 56 bytes mod 64.
+ len := d.len
+ var tmp [64]byte
+ tmp[0] = 0x80
+ if len%64 < 56 {
+ d.Write(tmp[0 : 56-len%64])
+ } else {
+ d.Write(tmp[0 : 64+56-len%64])
+ }
+
+ // Length in bits.
+ len <<= 3
+ for i := uint(0); i < 8; i++ {
+ tmp[i] = byte(len >> (8 * i))
+ }
+ d.Write(tmp[0:8])
+
+ if d.nx != 0 {
+ panic("d.nx != 0")
+ }
+
+ for _, s := range d.s {
+ in = append(in, byte(s>>0))
+ in = append(in, byte(s>>8))
+ in = append(in, byte(s>>16))
+ in = append(in, byte(s>>24))
+ }
+ return in
+}