Based on the J2EE architecture analysis and design of the workflow engine, very good code

auth\spi\package.html
....\login\package.html
....\x500\package.html
....\callback\package.html
cert\package.html
auth\package.html
....\kerberos\package.html
package.html
auth\login\AccountException.java
....\.....\AccountExpiredException.java
....\.....\AccountLockedException.java
....\.....\AccountNotFoundException.java
....\.....\AppConfigurationEntry.java
AuthenticationException.java
AuthorizeCallback.java
auth\AuthPermission.java
....\callback\Callback.java
....\........\CallbackHandler.java
cert\Certificate.java
....\CertificateEncodingException.java
....\CertificateException.java
....\CertificateExpiredException.java
....\CertificateNotYetValidException.java
....\CertificateParsingException.java
auth\callback\ChoiceCallback.java
....\login\Configuration.java
....\.....\ConfigurationSpi.java
....\callback\ConfirmationCallback.java
....\login\CredentialException.java
....\.....\CredentialExpiredException.java
....\.....\CredentialNotFoundException.java
....\kerberos\DelegationPermission.java
....\Destroyable.java
....\DestroyFailedException.java
....\login\FailedLoginException.java
....\kerberos\JavaxSecurityAuthKerberosAccessImpl.java
....\........\KerberosKey.java
....\........\KerberosPrincipal.java
....\........\KerberosTicket.java
....\........\KeyImpl.java
....\........\KeyTab.java
....\callback\LanguageCallback.java
....\login\LoginContext.java
....\.....\LoginException.java
....\spi\LoginModule.java
....\callback\NameCallback.java
....\........\PasswordCallback.java
....\Policy.java
....\PrivateCredentialPermission.java
RealmCallback.java
RealmChoiceCallback.java
auth\Refreshable.java
....\RefreshFailedException.java
Sasl.java
SaslClient.java
SaslClientFactory.java
SaslException.java
SaslServer.java
SaslServerFactory.java
auth\kerberos\ServicePermission.java
....\Subject.java
....\SubjectDomainCombiner.java
....\callback\TextInputCallback.java
....\........\TextOutputCallback.java
....\........\UnsupportedCallbackException.java
....\x500\X500Principal.java
....\....\X500PrivateCredential.java
cert\X509Certificate.java
auth\callback
....\kerberos
....\login
....\spi
....\x500
auth
cert

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