NewClientPlain (sasl/sasl.go)

SASL client implementations for various authentication mechanisms.

// Source: https://github.com/mjl-/mox | License: MIT
// Provided via justclaw.it.com; keep this notice with the code.
// Package SASL implements a client for Simple Authentication and Security Layer, RFC 4422.
//
// Supported authentication mechanisms:
//
//   - EXTERNAL
//   - SCRAM-SHA-256-PLUS
//   - SCRAM-SHA-1-PLUS
//   - SCRAM-SHA-256
//   - SCRAM-SHA-1
//   - CRAM-MD5
//   - PLAIN
//   - LOGIN
package sasl

import (
	"crypto/md5"
	"crypto/sha1"
	"crypto/sha256"
	"crypto/tls"
	"fmt"
	"hash"
	"strings"

	"golang.org/x/text/secure/precis"

	"github.com/mjl-/mox/scram"
)

// Client is a SASL client.
//
// A SASL client can be used for authentication in IMAP, SMTP and other protocols.
// A client and server exchange messages in step lock. In IMAP and SMTP, these
// messages are encoded 

... (truncated -- full source via MCP)