From: Michal Suchanek <hramrach@...>
Date: 2005-09-28T18:53:57+09:00
Subject: Re: How do I (really) encrypt a string in ruby?

On 9/28/05, NAKAMURA, Hiroshi <nakahiro@sarion.co.jp> wrote:...
>> > while (chunk=STDIN.read(CHLEN))> >   cipher=OpenSSL::Cipher::Cipher.new("AES-256-CBC")> >   cipher.encrypt(key,iv)> >   cipher.key=key> >   cipher.iv=iv> >   STDOUT << cipher.update(chunk)> >   STDOUT << cipher.final()> > end>> This block should be:>> cipher=OpenSSL::Cipher::Cipher.new("AES-256-CBC")> cipher.encrypt(key,iv)> cipher.padding=0 # avoid PKCS#5 paddingyes, this is what I wanted> cipher.key=key> cipher.iv=iv> ciphertext = []> while (chunk=STDIN.read(CHLEN))>   ciphertext << cipher.update(chunk)> end> ciphertext << cipher.final() rescue nil # no need to call final if> padding = 0> print ciphertext.join
But I really want to encrypt (and decrypt) the blocks separately.
Now I get identical results with C and ruby. Great !
Thanks
Michal Suchanek

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