Explore cryptography and security from a developer's perspective in this 39-minute EuroPython 2015 conference talk. Discover ways to encrypt information using Python scripts and secure sensitive data in web applications with Django. Learn about key encryption libraries like PyCrypto, M2Crypto, and the cryptography module, comparing their features and capabilities. Examine main ciphers and hashing algorithms such as AES, DES, and RSA through practical examples. Delve into steganography techniques for hiding information in various file types using libraries like Stepic and ezPyCrypto. Gain insights into the OWASP Python Security Project, covering secure coding guidelines and practices for identifying potential vulnerabilities like SQL injection and Cross-site scripting in your applications.