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diff --git a/libgo/go/crypto/rand/rand.go b/libgo/go/crypto/rand/rand.go
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+++ b/libgo/go/crypto/rand/rand.go
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+// Copyright 2010 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 rand implements a cryptographically secure
+// pseudorandom number generator.
+package rand
+
+import (
+	"io"
+	"os"
+)
+
+// Reader is a global, shared instance of a cryptographically
+// strong pseudo-random generator.
+// On Unix-like systems, Reader reads from /dev/urandom.
+// On Windows systems, Reader uses the CryptGenRandom API.
+var Reader io.Reader
+
+// Read is a helper function that calls Reader.Read.
+func Read(b []byte) (n int, err os.Error) { return Reader.Read(b) }