What is encryption and why are there more steps?
Encryption is a mathematical operation for encoding and decoding of information.
Through the number of bits (40 bits, 56 bits, 128 bits, 256 bits) you can see the size of the key. As for a longer password, there are several combinations for a longer key. 128-bit encryption is one trillion times stronger than 40-bit encryption.
When establishing an encrypted session, the strenght depends on the capacity of the web browser, SSL certificate and the web server and operating system of the client.