Namespace

Symfony\Component\Security\Core\Encoder

BasePasswordEncoder BasePasswordEncoder is the base class for all password encoders.
EncoderFactory A generic encoder factory implementation
MessageDigestPasswordEncoder MessageDigestPasswordEncoder uses a message digest algorithm.
PlaintextPasswordEncoder PlaintextPasswordEncoder does not do any encoding.

Interfaces

EncoderFactoryInterface EncoderFactoryInterface to support different encoders for different accounts.
PasswordEncoderInterface PasswordEncoderInterface is the interface for all encoders.