chacha20

package

v0.0.0-...-e2af113 Latest Latest Go to latest Published: Feb 20, 2018 License: MIT, BSD-3-Clause Imports: 1 Imported by: 0

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Repository

github.com/FiloSottile/powersoftau

Links

Open Source Insights

Documentation ¶

Overview ¶

Package ChaCha20 implements the core ChaCha20 function as specified in https://tools.ietf.org/html/rfc7539#section-2.3.

Index ¶

func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte)
type Rng
- func NewRng(key *[32]byte) *Rng
- func (r *Rng) Read(p []byte) (n int, err error)
- func (r *Rng) ReadUint32() uint32

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func XORKeyStream ¶

func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte)

XORKeyStream crypts bytes from in to out using the given key and counters. In and out must overlap entirely or not at all. Counter contains the raw ChaCha20 counter bytes (i.e. block counter followed by nonce).

Types ¶

type Rng ¶

type Rng struct {
	// contains filtered or unexported fields
}

Rng is a stateful random number generator returning the ChaCha20 key stream.

func NewRng ¶

func NewRng(key *[32]byte) *Rng

func (*Rng) Read ¶

func (r *Rng) Read(p []byte) (n int, err error)

func (*Rng) ReadUint32 ¶

func (r *Rng) ReadUint32() uint32

ReadUint32 returns a uint32 extracted in little-endian from the output.

Source Files ¶

View all Source files

chacha_generic.go

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