// 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 // random number generator.
package rand import // Reader is a global, shared instance of a cryptographically // secure random number generator. // // On Linux, FreeBSD, Dragonfly and Solaris, Reader uses getrandom(2) if // available, /dev/urandom otherwise. // On OpenBSD and macOS, Reader uses getentropy(2). // On other Unix-like systems, Reader reads from /dev/urandom. // On Windows systems, Reader uses the RtlGenRandom API. // On Wasm, Reader uses the Web Crypto API. var Reader io.Reader // Read is a helper function that calls Reader.Read using io.ReadFull. // On return, n == len(b) if and only if err == nil. func ( []byte) ( int, error) { return io.ReadFull(Reader, ) }