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scram – Go implementation of RFC-5802
Description
Package scram provides client and server implementations of the Salted Challenge Response Authentication Mechanism (SCRAM) described in RFC-5802 and RFC-7677.
It includes both client and server side support.
Channel binding and extensions are not (yet) supported.
Examples
Client side
package main
import "github.com/xdg-go/scram"
func main() {
// Get Client with username, password and (optional) authorization ID.
clientSHA1, err := scram.SHA1.NewClient("mulder", "trustno1", "")
if err != nil {
panic(err)
}
// Prepare the authentication conversation. Use the empty string as the
// initial server message argument to start the conversation.
conv := clientSHA1.NewConversation()
var serverMsg string
// Get the first message, send it and read the response.
firstMsg, err := conv.Step(serverMsg)
if err != nil {
panic(err)
}
serverMsg = sendClientMsg(firstMsg)
// Get the second message, send it, and read the response.
secondMsg, err := conv.Step(serverMsg)
if err != nil {
panic(err)
}
serverMsg = sendClientMsg(secondMsg)
// Validate the server's final message. We have no further message to
// send so ignore that return value.
_, err = conv.Step(serverMsg)
if err != nil {
panic(err)
}
return
}
func sendClientMsg(s string) string {
// A real implementation would send this to a server and read a reply.
return ""
}
Copyright and License
Copyright 2018 by David A. Golden. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"). You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0