From: Brian Candler <b.candler@...>
Date: 2008-10-18T00:20:42+09:00
Subject: Re: RSA public_encrypt bug?

Dani Pardo wrote:
> Hi, I'm trying to encrypt some data with an RSA public key, this is
> the code which is failing:

Your life might be easier if you read your public key from a PEM file 
:-)

I don't know why your code doesn't work. However I have attached some 
code I wrote about 4 years ago which I used to construct a key from its 
parameters (before writing it out as a PEM). It seems you're doing the 
right things, but maybe the comments are relevant.

I think I was using integers, so perhaps f.gets.to_i ?

Also, you could try writing out a PEM, and then using that at the 
openssl command line, to check that your key is actually valid.

Attachments:
http://www.ruby-forum.com/attachment/2828/rsa_new.rb

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