Answer
Zend_Auth is used for authenticating users with a variety of authentication methods, in
cluding
LDAP, OpenID, and HTTP
. Authentication is the process of verifying that the provided credentials are
valid for the system. By authenticating to your system, your users can prove that they are who they say
they are. For more information on Zend Fram
ework's authentication implementation, see the
Zend_Auth documentation.
Zend_Acl is an implementation of Access Control List (ACL) authorization. Generally speaking,
ACLs are lists of roles that are authorized to perform a particular operation o
n specific resources in your
system
. Zend_Acl can support advanced rule definitions with features such as multiple inheritance for
roles and assertions for conditional rules. For more information on Zend_Acl, see the Zend_Acl
documentation.
Zen
d_Auth and Zend_Acl can be used together to build very sophisticated security systems: first
the user confirms their identity with Zend_Auth, then this identity is used to assign one or more
Zend_Acl roles to the user for authorization to use or modify res
ources in the system
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