If I write the following code
mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $raw, MCRYPT_MODE_CBC, $iv);
How to write in ruby?
Add a comment
|
4 Answers
Here is Ruby equivalent using OpenSSL,
cipher = OpenSSL::Cipher::Cipher.new("aes-128-cbc")
cipher.encrypt
cipher.key = key
cipher.iv = iv
encrypted = cipher.update(raw)
encrypted << cipher.final
2 Comments
freddiefujiwara
Thank you for answering but bad decrypt (OpenSSL::Cipher::CipherError) occured What's wrong?
Sagar Ranglani
If your keysize is 32 bytes you need to write 'OpenSSL::Cipher::Cipher.new("aes-256-cbc")'
You can use the openssl library for this. I think what you need is here for symmetric key encryption:
http://stuff-things.net/2008/02/05/encrypting-lots-of-sensitive-data-with-ruby-on-rails/
Comments
MCRYPT_RIJNDAEL_128 denotes the blocksize 16 Bytes and 3 key sizes are possible
$key ~ 16 Bytes (AES-128)
cipher = OpenSSL::Cipher::Cipher.new("aes-128-cbc")$key ~ 24 Bytes (AES-192)
cipher = OpenSSL::Cipher::Cipher.new("aes-192-cbc")$key ~ 32 Bytes (AES-256)
cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
And then we can use the following code to perform encryption
cipher.encrypt
cipher.key = key
cipher.iv = iv
encrypted = cipher.update(raw)
encrypted << cipher.final
Comments
