Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This

Permission class
protects access to private
credential
objects belonging to a Subject (as specified by a
set of one or more Principal objects). Application
programmers rarely need to use it. System programmers implementing
new private credentials classes may need to use it, and system
administrators configuring security policy files should be familiar
with it.

The only defined action for
PrivateCredentialPermssion is
"read". The target name for this
permission has a complex syntax and specifies the name of the
credential class and a list of one or more principals. Each principal
is specified as the name of the Principal class
followed by the principal name in quotes. For example, a security
policy file might contain a statement like the following to allow
permission to read the private KerberosKey
credentials of a KerberosPrincipal named
"david".

permission javax.security.auth.PrivateCredentialPermission
"javax.security.auth.kerberos.KerberosKey javax.security.auth.kerberos.KerberosPrincipal \"david\",
"read";

The target name syntax for
PrivateCredentialPermission also allows the use of
the "*" wildcard in place of the
credential class name or in place of the Principal
class name and/or name.

Figure 19-2. javax.security.auth.PrivateCredentialPermission

public final class

PrivateCredentialPermission extends java.security.Permission {
// Public Constructors
public

PrivateCredentialPermission (String

name , String

actions );
// Public Instance Methods
public String

getCredentialClass ( );
public String[ ][ ]

getPrincipals ( );
// Public Methods Overriding Permission
public boolean

equals (Object

obj );
public String

getActions ( );
public int

hashCode ( );
public boolean

implies (java.security.Permission

p );
public java.security.PermissionCollection

newPermissionCollection ( ); constant
}