Encrypting data using Blowfish/cbc

Rails
1

I need to encrypt/decrypt some data in my application. I downloaded
crypt-1.1.4.zip and installed it successfully. But when I run a simple
test program, I get the following error:

C:/Dev/InstantRails/ruby/lib/ruby/site_ruby/1.8/crypt/cbc.rb:31:in `encrypt_stream': undefined method `write' for "":String (NoMethodError) from testcrypt.rb:8

Program is very simple:

require 'crypt/blowfish' tkey = '12345' tblow = Crypt::Blowfish.new(tkey) testblock = 'abcdeft12345' testcrypt = '' tblow.encrypt_stream(testblock,testcrypt) tblow.decrypt_stream(testcrypt,testdecrypt) puts testblock, testdecrypt

Crypt::Blowfihs mixes in Crypt::CBC which requires ‘stringio’, which
is where I’m guessing the write method should be.

Any pointers as to what I’m doing wrong here?

Thanks much…jon

2

That means it’s expecting ‘stream’ access, while you’re passing it a
string – I ran into the same problem, researched it, and finally gave
up.

Now I use Pelle Braendgaard’s EzCrypto module:
gem install ezcrypto

HTH…jon