go.crypto: initial code

Manual edits to README.
Moved from main Go repository, deleted Makefiles, ran gofix -r go1rename.

Tested with: go test code.google.com/p/go.crypto/...

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5564059

ssh/transport_test.go

@@ -0,0 +1,51 @@
+// Copyright 2011 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 ssh
+
+import (
+	"bufio"
+	"bytes"
+	"testing"
+)
+
+func TestReadVersion(t *testing.T) {
+	buf := serverVersion
+	result, err := readVersion(bufio.NewReader(bytes.NewBuffer(buf)))
+	if err != nil {
+		t.Errorf("readVersion didn't read version correctly: %s", err)
+	}
+	if !bytes.Equal(buf[:len(buf)-2], result) {
+		t.Error("version read did not match expected")
+	}
+}
+
+func TestReadVersionWithJustLF(t *testing.T) {
+	var buf []byte
+	buf = append(buf, serverVersion...)
+	buf = buf[:len(buf)-1]
+	buf[len(buf)-1] = '\n'
+	result, err := readVersion(bufio.NewReader(bytes.NewBuffer(buf)))
+	if err != nil {
+		t.Error("readVersion failed to handle just a \n")
+	}
+	if !bytes.Equal(buf[:len(buf)-1], result) {
+		t.Errorf("version read did not match expected: got %x, want %x", result, buf[:len(buf)-1])
+	}
+}
+
+func TestReadVersionTooLong(t *testing.T) {
+	buf := make([]byte, maxVersionStringBytes+1)
+	if _, err := readVersion(bufio.NewReader(bytes.NewBuffer(buf))); err == nil {
+		t.Errorf("readVersion consumed %d bytes without error", len(buf))
+	}
+}
+
+func TestReadVersionWithoutCRLF(t *testing.T) {
+	buf := serverVersion
+	buf = buf[:len(buf)-1]
+	if _, err := readVersion(bufio.NewReader(bytes.NewBuffer(buf))); err == nil {
+		t.Error("readVersion did not notice \\n was missing")
+	}
+}