From: Rolando Abarca <funkaster@...>
Date: 2008-04-17T07:33:56+09:00
Subject: Re: OpenSSL with Ruby

On Apr 16, 2008, at 6:16 PM, vaibhavb wrote:

> hi all -
>
> I'm not sure if this is the correct forum but i was wondering if
> anyone has successfully done RSA-SHA1 signing with Ruby OpenSSL and
> interoperated with Java Servers.
>
> I'm using the following code but i'm not sure if the "sign" method on
> works properly -
>
> @key = OpenSSL::PKey::RSA.new(2048)
> #sign
> @key.send("sign", OpenSSL::Digest.::SHA1.new, "text to sign")
>
> The expected signature from above "sign" is not what i know the Java
> crytpo api likes.
>
> Thanks in advance.

after digging forums and searching through the source, this is what  
i'm doing to sign:

digest = OpenSSL::Digest::SHA1.new(text_to_sign)
sign = key.private_encrypt(digest)
# sign is what you want, if you need it in Base64:
enc_sign = Base64.encode64(sign)

> regards,
> Vaibhav

regards,
-- 
Rolando Abarca M.