-
-
Save Zai/a3c435b8891185f96d7122f68c7cb826 to your computer and use it in GitHub Desktop.
Simply encrypt and decrypt Strings in ruby.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| require 'openssl' | |
| class String | |
| def encrypt(key) | |
| cipher = OpenSSL::Cipher::Cipher.new('DES-EDE3-CBC').encrypt | |
| cipher.key = Digest::SHA1.hexdigest key | |
| s = cipher.update(self) + cipher.final | |
| s.unpack('H*')[0].upcase | |
| end | |
| def decrypt(key) | |
| cipher = OpenSSL::Cipher::Cipher.new('DES-EDE3-CBC').decrypt | |
| cipher.key = Digest::SHA1.hexdigest key | |
| s = [self].pack("H*").unpack("C*").pack("c*") | |
| cipher.update(s) + cipher.final | |
| end | |
| end | |
| puts plain = 'confidential' # confidential | |
| puts key = 'secret' # secret | |
| puts cipher = plain.encrypt(key) # 5C6D4C5FAFFCF09F271E01C5A132BE89 | |
| puts cipher.decrypt('guess') # raises OpenSSL::Cipher::CipherError | |
| puts cipher.decrypt(key) # confidential |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment