DZone Snippets: openssl code

Extract a server certificate from a HTTPS connection.

purestorm () — Sat, 03 Feb 2007 22:34:31 GMT

You can simply extract information about the SSL certificate of HTTP connections using OpenSSL



openssl s_client -connect ${URL}:${PORT}

For example:



openssl s_client -connect checkout.google.com:443

From there, it is only redirecting the output to a file or extracting information out of the stream with Perl.

encrypting data with ruby and OpenSSL

technoweenie (Rick Olson) — Thu, 11 Aug 2005 13:16:40 GMT

require 'openssl'

require 'digest/sha1'

c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")

c.encrypt

# your pass is what is used to encrypt/decrypt

c.key = key = Digest::SHA1.hexdigest("yourpass")

c.iv = iv = c.random_iv

e = c.update("crypt this")

e << c.final

puts "encrypted: #{e}\n"

c = OpenSSL::Cipher::Cipher.new("aes-256-cbc")

c.decrypt

c.key = key

c.iv = iv

d = c.update(e)

d << c.final

puts "decrypted: #{d}\n"

provided by menik from #rubyonrails

Easy file encryption and decryption from the shell

peter (Peter Cooperx) — Fri, 27 May 2005 11:17:25 GMT

Works on OS X, Linux, anywhere with OpenSSL installed:

To encrypt a file:
openssl des3 -salt -in infile.txt -out encryptedfile.txt

To decrypt the file:
openssl des3 -d -salt -in encryptedfile.txt -out normalfile.txt

Do not specify the same file as input and output on encryption.. I have noticed weird effects on OS X (it eats the file). Remove the -in * stuff if you want to pipe data into it (e.g. a tarred folder). Omit the -out * stuff if you want it to pipe data out on STDOUT.