I am sorry that I do not know the "PEM" format. However, it is very easy to use OpenSSL to generate a code for my program. Under Linux command line, you run this command:
openssl genrsa 2048 | openssl rsa -text -noout
In the output you will see modulus, private key and public key. Remove all the ":" between it, make these a very huge Integer. You are done. If you like, you may write a program to do this too.
Hope this helps. Crypto-Experts, welcome to comment on this piece of code, is it important to use "PEM"?
Thanks,
Shannon
···
From: "name pipe" <namepipe@gmail.com>
To: xrfang@hotmail.com
Subject: Re: RSA Encryption Decryption
Date: Wed, 19 Apr 2006 18:38:00 +0530
Hi Shannon,
Your code was helpful. Thanks.
Only problem is that the pub/private keys you used in the code are not in
PEM format. How can we generate keys in the format you have used in the
code. Also I need to make a 32 bit key. How can I do that ?
Thanks.
On 4/18/06, Shannon Fang <xrfang@hotmail.com> wrote:
>
> Try mine 
You may use OpenSSL to generate key and use this program to do
> rsa. It's speed is quite ok for 2048 bit encryption.
>
> Shannon
>
> >From: "name pipe" <namepipe@gmail.com>
> >Reply-To: ruby-talk@ruby-lang.org
> >To: ruby-talk@ruby-lang.org (ruby-talk ML)
> >Subject: Re: RSA Encryption Decryption
> >Date: Tue, 18 Apr 2006 18:34:18 +0900
> >
> >Thanks, but its bit confusing with new include files and stuff. Any
> simple
> >eg. which creates RSA public, private keys and encrypts/decrypts data ?
> >
> >On 4/18/06, Roland Schmitt <Roland.Schmitt@web.de> wrote:
> > >
> > > Hi,
> > >
> > > name pipe wrote:
> > > > Hi,
> > > >
> > > > I would like to know how can we do encryption and decryption using
> > > public
> > > > and private keys in ruby. Does ruby any RSA libraries for the same.
> A
> > > small
> > > > example would be quite helpful.
> > > >
> > > > Thanks
> > > >
> > >
> > > take a look at the openssl bindings for ruby:
> > >
> > > require "openssl"
> > > include OpenSSL
> > > include X509
> > > include PKey
> > >
> > > cert = Certificate.new(File.read("server.cer"))
> > > private_key = RSA.new(File.read("server.cer.key"))
> > > message = "This is a test!"
> > >
> > > puts("--- Start private key encryption / public key decryption")
> > > crypt = private_key.private_encrypt(message)
> > > puts("Plain text ---------")
> > > puts(message)
> > > puts("Encrypted text------")
> > > puts(crypt)
> > > puts("Decryted text-------")
> > > puts(cert.public_key.public_decrypt(crypt))
> > >
> > > puts("--- Start public key encryption / private key decryption")
> > > crypt = cert.public_key.public_encrypt(message)
> > > puts("Encrypted text------")
> > > puts(crypt)
> > > puts("Decryted text-------")
> > > puts(private_key.private_decrypt(crypt))
> > >
> > > Regards,
> > > Roland
> > >
>
Shannon,
Your code expects HEX.
How are you generating keys in a hex format?
Thanks,
-Alan
···
-----Original Message-----
From: Shannon Fang [mailto:xrfang@hotmail.com]
Sent: Thursday, April 20, 2006 8:46 AM
To: ruby-talk ML; namepipe@gmail.com
Cc: ruby-talk@ruby-lang.org
Subject: Re: RSA Encryption Decryption
I am sorry that I do not know the "PEM" format. However, it is very easy to
use OpenSSL to generate a code for my program. Under Linux command line, you
run this command:
openssl genrsa 2048 | openssl rsa -text -noout
In the output you will see modulus, private key and public key. Remove all
the ":" between it, make these a very huge Integer. You are done. If you
like, you may write a program to do this too.
Hope this helps. Crypto-Experts, welcome to comment on this piece of code,
is it important to use "PEM"?
Thanks,
Shannon
From: "name pipe" <namepipe@gmail.com>
To: xrfang@hotmail.com
Subject: Re: RSA Encryption Decryption
Date: Wed, 19 Apr 2006 18:38:00 +0530
Hi Shannon,
Your code was helpful. Thanks.
Only problem is that the pub/private keys you used in the code are not in
PEM format. How can we generate keys in the format you have used in the
code. Also I need to make a 32 bit key. How can I do that ?
Thanks.
On 4/18/06, Shannon Fang <xrfang@hotmail.com> wrote:
>
> Try mine You may use OpenSSL to generate key and use this program to
do
> rsa. It's speed is quite ok for 2048 bit encryption.
>
> Shannon
>
>
> >From: "name pipe" <namepipe@gmail.com>
> >Reply-To: ruby-talk@ruby-lang.org
> >To: ruby-talk@ruby-lang.org (ruby-talk ML)
> >Subject: Re: RSA Encryption Decryption
> >Date: Tue, 18 Apr 2006 18:34:18 +0900
> >
> >Thanks, but its bit confusing with new include files and stuff. Any
> simple
> >eg. which creates RSA public, private keys and encrypts/decrypts data ?
> >
> >
> >On 4/18/06, Roland Schmitt <Roland.Schmitt@web.de> wrote:
> > >
> > > Hi,
> > >
> > >
> > > name pipe wrote:
> > > > Hi,
> > > >
> > > > I would like to know how can we do encryption and decryption using
> > > public
> > > > and private keys in ruby. Does ruby any RSA libraries for the
same.
> A
> > > small
> > > > example would be quite helpful.
> > > >
> > > > Thanks
> > > >
> > >
> > > take a look at the openssl bindings for ruby:
> > >
> > > require "openssl"
> > > include OpenSSL
> > > include X509
> > > include PKey
> > >
> > > cert = Certificate.new(File.read("server.cer"))
> > > private_key = RSA.new(File.read("server.cer.key"))
> > > message = "This is a test!"
> > >
> > > puts("--- Start private key encryption / public key decryption")
> > > crypt = private_key.private_encrypt(message)
> > > puts("Plain text ---------")
> > > puts(message)
> > > puts("Encrypted text------")
> > > puts(crypt)
> > > puts("Decryted text-------")
> > > puts(cert.public_key.public_decrypt(crypt))
> > >
> > > puts("--- Start public key encryption / private key decryption")
> > > crypt = cert.public_key.public_encrypt(message)
> > > puts("Encrypted text------")
> > > puts(crypt)
> > > puts("Decryted text-------")
> > > puts(private_key.private_decrypt(crypt))
> > >
> > >
> > >
> > > Regards,
> > > Roland
> > >
> > >
>
>
>
>
I found the problem:
Depending on how you launch Openssl, the output may be in non-HEX.
It's all much easier now:)
Thanks,
-Alan
···
-----Original Message-----
From: Alan Fritz [mailto:Alan.Fritz@york.com]
Sent: Thursday, April 20, 2006 2:40 PM
To: ruby-talk ML
Subject: Re: RSA Encryption Decryption
Shannon,
Your code expects HEX.
How are you generating keys in a hex format?
Thanks,
-Alan
-----Original Message-----
From: Shannon Fang [mailto:xrfang@hotmail.com]
Sent: Thursday, April 20, 2006 8:46 AM
To: ruby-talk ML; namepipe@gmail.com
Cc: ruby-talk@ruby-lang.org
Subject: Re: RSA Encryption Decryption
I am sorry that I do not know the "PEM" format. However, it is very easy to
use OpenSSL to generate a code for my program. Under Linux command line, you
run this command:
openssl genrsa 2048 | openssl rsa -text -noout
In the output you will see modulus, private key and public key. Remove all
the ":" between it, make these a very huge Integer. You are done. If you
like, you may write a program to do this too.
Hope this helps. Crypto-Experts, welcome to comment on this piece of code,
is it important to use "PEM"?
Thanks,
Shannon
From: "name pipe" <namepipe@gmail.com>
To: xrfang@hotmail.com
Subject: Re: RSA Encryption Decryption
Date: Wed, 19 Apr 2006 18:38:00 +0530
Hi Shannon,
Your code was helpful. Thanks.
Only problem is that the pub/private keys you used in the code are not in
PEM format. How can we generate keys in the format you have used in the
code. Also I need to make a 32 bit key. How can I do that ?
Thanks.
On 4/18/06, Shannon Fang <xrfang@hotmail.com> wrote:
>
> Try mine You may use OpenSSL to generate key and use this program to
do
> rsa. It's speed is quite ok for 2048 bit encryption.
>
> Shannon
>
>
> >From: "name pipe" <namepipe@gmail.com>
> >Reply-To: ruby-talk@ruby-lang.org
> >To: ruby-talk@ruby-lang.org (ruby-talk ML)
> >Subject: Re: RSA Encryption Decryption
> >Date: Tue, 18 Apr 2006 18:34:18 +0900
> >
> >Thanks, but its bit confusing with new include files and stuff. Any
> simple
> >eg. which creates RSA public, private keys and encrypts/decrypts data ?
> >
> >
> >On 4/18/06, Roland Schmitt <Roland.Schmitt@web.de> wrote:
> > >
> > > Hi,
> > >
> > >
> > > name pipe wrote:
> > > > Hi,
> > > >
> > > > I would like to know how can we do encryption and decryption using
> > > public
> > > > and private keys in ruby. Does ruby any RSA libraries for the
same.
> A
> > > small
> > > > example would be quite helpful.
> > > >
> > > > Thanks
> > > >
> > >
> > > take a look at the openssl bindings for ruby:
> > >
> > > require "openssl"
> > > include OpenSSL
> > > include X509
> > > include PKey
> > >
> > > cert = Certificate.new(File.read("server.cer"))
> > > private_key = RSA.new(File.read("server.cer.key"))
> > > message = "This is a test!"
> > >
> > > puts("--- Start private key encryption / public key decryption")
> > > crypt = private_key.private_encrypt(message)
> > > puts("Plain text ---------")
> > > puts(message)
> > > puts("Encrypted text------")
> > > puts(crypt)
> > > puts("Decryted text-------")
> > > puts(cert.public_key.public_decrypt(crypt))
> > >
> > > puts("--- Start public key encryption / private key decryption")
> > > crypt = cert.public_key.public_encrypt(message)
> > > puts("Encrypted text------")
> > > puts(crypt)
> > > puts("Decryted text-------")
> > > puts(private_key.private_decrypt(crypt))
> > >
> > >
> > >
> > > Regards,
> > > Roland
> > >
> > >
>
>
>
>