Comments on: Blowfish decryption in Ruby, revisited

By: Daniel Brahneborg

Daniel Brahneborg — Sun, 17 Aug 2008 20:03:11 +0000

Sebastian: If you follow the instructions on that page and make sure you understand what is going on, you’ll be done in no time. For me, as I said, it took less than a day.

Still, I’ll check if I can post the code, but don’t count on it.

By: Sebastian

Sebastian — Sun, 17 Aug 2008 19:57:44 +0000

Hi
I would love to see the c-extension you wrote!
I have to do encryption in a module and have to create a c extension to hide the key!
The link above only gets me to a page about writing c-extensions…

Best regards
Sebastian

By: Daniel Brahneborg

Daniel Brahneborg — Mon, 09 Jun 2008 15:25:34 +0000

No, I didn’t. We stayed with the C version.

By: Allen Taylor

Allen Taylor — Mon, 09 Jun 2008 14:48:15 +0000

Did you guys every get a working solution for ruby blowfish encryption? Is so, can you email me what you found?

Thanks,

Allen

By: Jim

Jim — Thu, 14 Jun 2007 19:46:02 +0000

I would also be very interested in getting this too work.

ezcrypto fails on files bigger that 256 bytes (well it does how I’m doing it):(
And the crypto gem is way too slow for me.

I will probably have to embed my C code too, not an ideal solution.

By: Daniel Brahneborg

Daniel Brahneborg — Thu, 22 Mar 2007 04:42:46 +0000

Thanks, I guess there is some code that actually works. If you have the time, please email me that code snippet. It would be great not having to use C code.

By: supersaurus

supersaurus — Wed, 21 Mar 2007 21:50:56 +0000

I guess your blogware just doesn’t like ruby code, sorry, that’s it for me.

By: supersaurus

supersaurus — Wed, 21 Mar 2007 21:50:16 +0000

well, that didn’t work, let’s try tags


#class EzCrypto::Key

module EzCrypto_extension

# for both methods # src can be a file, a StringIO # or anything that responds to a read # target can be a string, a file # or anything that responds to

By: supersaurus

supersaurus — Wed, 21 Mar 2007 21:49:37 +0000

well, I don’t know what happened there, but part of the post disappeared. here is the module again:

#class EzCrypto::Key
module EzCrypto_extension

# for both methods
# src can be a file, a StringIO
# or anything that responds to a read
# target can be a string, a file
# or anything that responds to

By: supersaurus

supersaurus — Wed, 21 Mar 2007 21:47:52 +0000

I don’t know exactly what you are doing but below is what I did. using the module below to extend an EzCrypto::Key I can encrypt a 20MB binary file in 3-4 seconds instead of 1 hour+ as with pure ruby solutions.

module EzCrypto_extension
# for both methods
# src can be a file, a StringIO
# or anything that responds to a read
# target can be a string, a file
# or anything that responds to “aes-128-cbc”) # blowfish, etc also work

# add methods to the key
key.extend(EzCrypto_extension)

# use the new methods

key.decrypt_stream(infile,outfile)
# or
key.encrypt_stream(infile,outfile)