scram

Documentation

Overview

Package scram implements a SCRAM-{SHA-1,etc} client per RFC5802.

http://tools.ietf.org/html/rfc5802

Index

• type Client
  • func NewClient(newHash func() hash.Hash, user, pass string) *Client
  • func (c *Client) Err() error
  • func (c *Client) Out() []byte
  • func (c *Client) SetNonce(nonce []byte)
  • func (c *Client) Step(in []byte) bool

Types

type Client

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

Client implements a SCRAM-* client (SCRAM-SHA-1, SCRAM-SHA-256, etc).

A Client may be used within a SASL conversation with logic resembling:

var in []byte
var client = scram.NewClient(sha1.New, user, pass)
for client.Step(in) {
        out := client.Out()
        // send out to server
        in := serverOut
}
if client.Err() != nil {
        // auth failed
}

func NewClient

func NewClient(newHash func() hash.Hash, user, pass string) *Client

NewClient returns a new SCRAM-* client with the provided hash algorithm.

For SCRAM-SHA-256, for example, use:

client := scram.NewClient(sha256.New, user, pass)

func (*Client) Err

func (c *Client) Err() error

Err returns the error that occurred, or nil if there were no errors.

func (*Client) Out

func (c *Client) Out() []byte

Out returns the data to be sent to the server in the current step.

func (*Client) SetNonce

func (c *Client) SetNonce(nonce []byte)

SetNonce sets the client nonce to the provided value. If not set, the nonce is generated automatically out of crypto/rand on the first step.

func (*Client) Step

func (c *Client) Step(in []byte) bool

Step processes the incoming data from the server and makes the next round of data for the server available via Client.Out. Step returns false if there are no errors and more data is still expected.