Class: Mail::Gpg::SignPart

Inherits:
Part
  • Object
show all
Defined in:
lib/mail/gpg/sign_part.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cleartext_mail, options = {}) ⇒ SignPart

Returns a new instance of SignPart.



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# File 'lib/mail/gpg/sign_part.rb', line 5

def initialize(cleartext_mail, options = {})
  signature = GpgmeHelper.sign(cleartext_mail.encoded, options)
  super() do
    body signature.to_s
    content_type "application/pgp-signature; name=\"signature.asc\""
    content_disposition 'attachment; filename="signature.asc"'
    content_description 'OpenPGP digital signature'
  end
end

Class Method Details

.signature_valid?(plain_part, signature_part, options = {}) ⇒ Boolean

true if all signatures are valid

Returns:

  • (Boolean) 


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# File 'lib/mail/gpg/sign_part.rb', line 16

def self.signature_valid?(plain_part, signature_part, options = {})
  verify_signature(plain_part, signature_part, options)[0]
end

.verify_signature(plain_part, signature_part, options = {}) ⇒ Object

will return [success(boolean), verify_result(as returned by gpgme)]



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# File 'lib/mail/gpg/sign_part.rb', line 21

def self.verify_signature(plain_part, signature_part, options = {})
  if !(signature_part.has_content_type? &&
       ('application/pgp-signature' == signature_part.mime_type))
    return false
  end

  # Work around the problem that plain_part.raw_source prefixes an
  # erronous CRLF, <https://github.com/mikel/mail/issues/702>.
  if ! plain_part.raw_source.empty?
    plaintext = [ plain_part.header.raw_source,
                  "\r\n\r\n",
                  plain_part.body.raw_source
                ].join
  else
    plaintext = plain_part.encoded
  end

  signature = signature_part.body.encoded
  GpgmeHelper.sign_verify(plaintext, signature, options)
end