Sha256: 8c30c09e30865f401c27a5ac1f7db808807e6be8e690dbbad411969b31e555f2
Contents?: true
Size: 1.24 KB
Versions: 9
Compression:
Stored size: 1.24 KB
Contents
unless defined? OpenSSL
begin
require 'digest/md5'
rescue LoadError
end
end
class Net::SMTP
class AuthCramMD5 < Net::SMTP::Authenticator
auth_type :cram_md5
def auth(user, secret)
challenge = continue('AUTH CRAM-MD5')
crammed = cram_md5_response(secret, challenge.unpack1('m'))
finish(base64_encode("#{user} #{crammed}"))
end
IMASK = 0x36
OMASK = 0x5c
# CRAM-MD5: [RFC2195]
def cram_md5_response(secret, challenge)
tmp = digest_class::MD5.digest(cram_secret(secret, IMASK) + challenge)
digest_class::MD5.hexdigest(cram_secret(secret, OMASK) + tmp)
end
CRAM_BUFSIZE = 64
def cram_secret(secret, mask)
secret = digest_class::MD5.digest(secret) if secret.size > CRAM_BUFSIZE
buf = secret.ljust(CRAM_BUFSIZE, "\0")
0.upto(buf.size - 1) do |i|
buf[i] = (buf[i].ord ^ mask).chr
end
buf
end
def digest_class
@digest_class ||= if defined?(OpenSSL::Digest)
OpenSSL::Digest
elsif defined?(::Digest)
::Digest
else
raise '"openssl" or "digest" library is required'
end
end
end
end
Version data entries
9 entries across 9 versions & 5 rubygems