libgo/go/crypto/rand/rand.go

   1 // Copyright 2010 The Go Authors.  All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // Package rand implements a cryptographically secure
   6 // pseudorandom number generator.
   7 package rand
   8
   9 import (
  10         "io"
  11         "os"
  12 )
  13
  14 // Reader is a global, shared instance of a cryptographically
  15 // strong pseudo-random generator.
  16 // On Unix-like systems, Reader reads from /dev/urandom.
  17 // On Windows systems, Reader uses the CryptGenRandom API.
  18 var Reader io.Reader
  19
  20 // Read is a helper function that calls Reader.Read.
  21 func Read(b []byte) (n int, err os.Error) { return Reader.Read(b) }