How to encrypt data in a UTF-8 string using OpenSSL::Cipher?
The solution is to convert the ASCII-8BIT string to Base64 and then encode to UTF-8.
cipher = OpenSSL::Cipher.new 'aes-256-cbc'cipher.encryptcipher.key = cipher.random_keycipher.iv = cipher.random_ivencrypted = cipher.update 'most secret data in the world'encrypted << cipher.finalencoded = Base64.encode64(encrypted).encode('utf-8')Once persisted and retrieved from the database,
decoded = Base64.decode64 encoded.encode('ascii-8bit')and finally decrypt it.
PS: If you're curious:
cipher = OpenSSL::Cipher.new 'aes-256-cbc'cipher.decryptcipher.key = random_keycipher.iv = random_ivdecrypted = cipher.update encodeddecrypted << cipher.final> decrypted => 'most secret data in the world'