Source file src/pkg/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 "io" 10 11 // Reader is a global, shared instance of a cryptographically 12 // strong pseudo-random generator. 13 // On Unix-like systems, Reader reads from /dev/urandom. 14 // On Windows systems, Reader uses the CryptGenRandom API. 15 var Reader io.Reader 16 17 // Read is a helper function that calls Reader.Read. 18 func Read(b []byte) (n int, err error) { return Reader.Read(b) }