package rand

import "gvisor.dev/gvisor/pkg/rand"

Package rand implements a cryptographically secure pseudorandom number generator.

Index ¶

• Variables
• func Init() error
• func Int63() int64
• func Int63n(n int64) int64
• func Read(b []byte) (int, error)
• func Uint32() uint32
• func Uint64() uint64
• type RNG
• func RNGFrom(r io.Reader) RNG
• func (rg *RNG) Int63() int64
• func (rg *RNG) Int63n(n int64) int64
• func (rg *RNG) Uint16() uint16
• func (rg *RNG) Uint32() uint32
• func (rg *RNG) Uint64() uint64

Variables ¶

var Reader io.Reader = &bufferedReader{r: bufio.NewReader(&reader{})}

Reader is the default reader.

Functions ¶

func Init ¶

func Init() error

Init can be called to make sure /dev/urandom is pre-opened on kernels that do not support getrandom(2).

func Int63 ¶

func Int63() int64

Int63 is analogous to the standard library's math/rand.Int63.

func Int63n ¶

func Int63n(n int64) int64

Int63n is analogous to the standard library's math/rand.Int63n.

func Read ¶

func Read(b []byte) (int, error)

Read reads from the default reader.

func Uint32 ¶

func Uint32() uint32

Uint32 is analogous to the standard library's math/rand.Uint32.

func Uint64 ¶

func Uint64() uint64

Uint64 is analogous to the standard library's math/rand.Uint64.

Types ¶

type RNG ¶

type RNG struct {
	Reader io.Reader
}

RNG exposes convenience functions based on a cryptographically secure io.Reader.

func RNGFrom ¶

func RNGFrom(r io.Reader) RNG

RNGFrom returns a new RNG. r must be a cryptographically secure io.Reader.

func (*RNG) Int63 ¶

func (rg *RNG) Int63() int64

Int63 is analogous to the standard library's math/rand.Int63.

func (*RNG) Int63n ¶

func (rg *RNG) Int63n(n int64) int64

Int63n is analogous to the standard library's math/rand.Int63n.

func (*RNG) Uint16 ¶

func (rg *RNG) Uint16() uint16

Uint16 is analogous to the standard library's math/rand.Uint16.

func (*RNG) Uint32 ¶

func (rg *RNG) Uint32() uint32

Uint32 is analogous to the standard library's math/rand.Uint32.

func (*RNG) Uint64 ¶

func (rg *RNG) Uint64() uint64

Uint64 is analogous to the standard library's math/rand.Uint64.

Source Files ¶

rand_linux.go rng.go