Forum: Ruby openssl encrypt / decrypt question

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Aynon Ehmouse (Guest)
on 2006-02-07 05:06
(Received via mailing list)
Hi all,

I'm attempting to encrypt and decrypt a string, and am having some
issues with the decrypt side. I'm using ruby 1.8.4 on gentoo.

My code looks something like this:

-----code starts-----
require 'openssl'

# Load up sender key pair
from_cert ="send_cert.pem"))
from_key ="send_key.pem"))
# Load up recipient key pair (
to_cert ="rcpt_cert.pem"))
to_key ="rcpt_key.pem"))

# Basic data
data = "test this out"

# Sign message
from_signed = PKCS7::sign(from_cert, from_key, data, [], PKCS7::BINARY)
# The next line emits the data correctly
# Encrypt signed message
from_encrypted = PKCS7::encrypt([to_cert], from_signed.to_der,
Cipher::Cipher::new("DES3"), PKCS7::BINARY)
# This is the data format I send to the recipient.
from_message = from_encrypted.to_pem

# Pretend that I'm receiving this on the 'to' side.
to_encrypted =
to_decrypted =, to_cert,

# See who signed the message:
to_decrypted.signers.each { |signer|
  print "#{}\n"
# This *should* emit the data, but instead prints nothing.
print "#{}\n"
-----code ends-----

So... I know that the encryption works, because a third party can
decrypt messages I send them. However, in this testing setup, I can see
who the signer is, but there's no data (output is 'nil').

Anyone know what I'm doing wrong?


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