class Net::IMAP::CramMD5Authenticator

Authenticator for the “CRAM-MD5” SASL mechanism, specified in RFC2195. See Net::IMAP#authenticate.

Deprecated¶ ↑

CRAM-MD5 is obsolete and insecure. It is included for compatibility with existing servers. draft-ietf-sasl-crammd5-to-historic recommends using SCRAM-* or PLAIN protected by TLS instead.

Additionally, RFC8314 discourage the use of cleartext and recommends TLS version 1.2 or greater be used for all traffic. With TLS CRAM-MD5 is okay, but so is PLAIN

Public Class Methods

new(user, password, warn_deprecation: true, **_ignored) click to toggle source

# File net-imap-0.3.4/lib/net/imap/authenticators/cram_md5.rb, line 24
def initialize(user, password, warn_deprecation: true, **_ignored)
  if warn_deprecation
    warn "WARNING: CRAM-MD5 mechanism is deprecated." # TODO: recommend SCRAM
  end
  require "digest/md5"
  @user = user
  @password = password
end

Public Instance Methods

process(challenge) click to toggle source

# File net-imap-0.3.4/lib/net/imap/authenticators/cram_md5.rb, line 17
def process(challenge)
  digest = hmac_md5(challenge, @password)
  return @user + " " + digest
end