Module aeonics.core

Package aeonics.manager

Class Security

java.lang.Object

aeonics.entity.Entity

aeonics.manager.Manager.Type

aeonics.manager.Security

All Implemented Interfaces:

Exportable, Snapshotable

public abstract class Security
extends Manager.Type

Manages the global security settings in the system and defines the common behavior of the different security requirements.

Constructor Summary

Constructors

Constructor	Description
Security()

Method Summary

Modifier and Type	Method	Description
User.Type	authenticate(Provider.Type provider, Data context)	Authenticate a user based on opaque authentication credentials.
abstract Token	authenticate(java.lang.String token, boolean reset)	Retreives a token instance based on a an opaque token value.
abstract void	clearTokens(User.Type user)	Revokes all tokens for the provided user
abstract byte[]	decrypt(java.lang.String value, byte[] key)	Decrypts the given value to recover the original value that was encrypted with encrypt(String, String).
java.lang.String	decrypt(java.lang.String value, java.lang.String key)	Decrypts the given value to recover the original text that was encrypted with encrypt(String, String).
abstract java.lang.String	encrypt(byte[] value, byte[] key)	Encrypts the given value with a strong symmetric key encryption method.
java.lang.String	encrypt(java.lang.String value, java.lang.String key)	Encrypts the given value with a strong symmetric key encryption method.
abstract Token	generateToken(User.Type user, long validity, boolean exclusive, java.lang.String... scopes)	Generates a Token for the provided user.
boolean	granted(User.Type user, java.lang.String scope, Data context)	Checks if the user is granted usage of the specified scope with the given context.
java.lang.String	hash(byte[] value)	Produces a strong cryptographic hash of the input value.
abstract java.lang.String	hash(byte[] value, byte[] salt)	Produces a strong cryptographic hash of the input value.
abstract java.lang.String	hash(java.io.InputStream value)	Produces a strong cryptographic hash of the target input data.
java.lang.String	hash(java.lang.String value)	Produces a strong cryptographic hash of the input value.
java.lang.String	hash(java.lang.String value, java.lang.String salt)	Produces a strong cryptographic hash of the input value.
boolean	isExplicitlyAllowed(User.Type user, java.lang.String scope, Data context)	Evaluates if the user is explicitly allowed access.
boolean	isExplicitlyDenied(User.Type user, java.lang.String scope, Data context)	Evaluates if the user is explicitly denied access.
java.lang.Class<? extends Manager.Type>	manager()	Hardcoded manager type
java.util.List<Provider.Type>	providers(java.lang.String user)	Returns the list of Provider that may be able to authenticate the specified user.
abstract java.lang.String	randomHash()	Produces a random meaningless and opaque hash.
abstract void	revokeToken(Token token)	Revokes the provided token If the provided token is null, this method returns without doing anything.

Methods inherited from class aeonics.manager.Manager.Type

category, internal

Methods inherited from class aeonics.entity.Entity

addRelation, addRelation, addRelation, cast, clearRelation, config, defineRelation, equals, export, firstRelation, hashCode, hasRelation, id, name, name, onCreate, onRemove, onUpdate, parameter, relations, relationships, removeRelation, snapshot, type, valueOf, valueOf

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Security

public Security()

Method Detail

manager

public final java.lang.Class<? extends Manager.Type> manager()

Hardcoded manager type

Specified by:

manager in class Manager.Type

Returns:

the type of manager

randomHash

public abstract java.lang.String randomHash()

Produces a random meaningless and opaque hash. The goal of this function is to serve as source of entropy to generate cryptographycally-sufficient long random string values.

This is a good candidate to generate a Token.

Returns:

a random hash in hex format

hash

public abstract java.lang.String hash(java.io.InputStream value)

Produces a strong cryptographic hash of the target input data. The hash is not salted. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input stream to hash

Returns:

the hashed value in hex format

hash

public java.lang.String hash(java.lang.String value)

Produces a strong cryptographic hash of the input value. The hash is not salted. Always prefer the hash(String, String) version. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input text to hash

Returns:

the hashed value in hex format

hash

public java.lang.String hash(byte[] value)

Produces a strong cryptographic hash of the input value. The hash is not salted. Always prefer the hash(String, String) version. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input text to hash

Returns:

the hashed value in hex format

hash

public java.lang.String hash(java.lang.String value,
                             java.lang.String salt)

Produces a strong cryptographic hash of the input value. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input text to hash

salt - the salt value (may be null but it is not recommended)

Returns:

the hashed value in hex format

hash

public abstract java.lang.String hash(byte[] value,
                                      byte[] salt)

Produces a strong cryptographic hash of the input value. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input text to hash

salt - the salt value (may be null but it is not recommended)

Returns:

the hashed value in hex format

encrypt

public java.lang.String encrypt(java.lang.String value,
                                java.lang.String key)

Encrypts the given value with a strong symmetric key encryption method. Use decrypt(String, String) to recover the original value. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input text to encrypt

key - the symmetric key

Returns:

the encrypted value in base64 format

Throws:

java.lang.SecurityException - if any error happens during encryption. For security purpose, the cause of the exception is discarded.

encrypt

public abstract java.lang.String encrypt(byte[] value,
                                         byte[] key)

Encrypts the given value with a strong symmetric key encryption method. Use decrypt(String, byte[]) to recover the original value. The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the input to encrypt

key - the symmetric key

Returns:

the encrypted value in base64 format

Throws:

java.lang.SecurityException - if any error happens during encryption. For security purpose, the cause of the exception is discarded.

decrypt

public java.lang.String decrypt(java.lang.String value,
                                java.lang.String key)

Decrypts the given value to recover the original text that was encrypted with encrypt(String, String). The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the encrypted text to decrypt in base64 format

key - the symmetric key

Returns:

the original text

Throws:

java.lang.SecurityException - if any error happens during decryption, including a key mismatch. For security purpose, the cause of the exception is discarded.

decrypt

public abstract byte[] decrypt(java.lang.String value,
                               byte[] key)

Decrypts the given value to recover the original value that was encrypted with encrypt(String, String). The underlying implementation is not enforced but the algorithm shall remain consistent to ensure backward compatibility over time.

Parameters:

value - the encrypted value to decrypt in base64 format

key - the symmetric key

Returns:

the original value

Throws:

java.lang.SecurityException - if any error happens during decryption, including a key mismatch. For security purpose, the cause of the exception is discarded.

providers

public java.util.List<Provider.Type> providers(java.lang.String user)

Returns the list of Provider that may be able to authenticate the specified user.

This method is used to allow the user to choose an authentication provider.

It is not guaranteed that all returned providers can successfully authenticate the user, this is more of an indication as per Provider.Type.supports(String).

Parameters:

user - the user login

Returns:

the list of providers that can support authenticating the provided user

authenticate

public User.Type authenticate(Provider.Type provider,
                              Data context)

Authenticate a user based on opaque authentication credentials. This is the prefered way to authenticate users.

This method calls Provider.Type.authenticate(Data) on the selected provider.

This method has the ability to intercept the authentication request and perform auditing, filtering or any other type of logic.

Parameters:

provider - the target identity provider

context - the authentication context that shall be used by the provider to authenticate the user

Returns:

the authenticated user instance or User.ANONYMOUS if no user matches

granted

public boolean granted(User.Type user,
                       java.lang.String scope,
                       Data context)

Checks if the user is granted usage of the specified scope with the given context. The final decision is

!isExplicitlyDenied(user, scope, context) && isExplicitlyAllowed(user, scope, context)

The User.SYSTEM is always granted without checking.

The scope and context are not defined and can be anything, the behavior will depend on applicable Policy

In general, for the internal routing mechanics, the scope will be "topic" and the context will contain a Message entity.

Parameters:

user - the user, must not be null

scope - the scope of interest, must not be null

context - the context data to check against rules and policies, may be null

Returns:

true if the user is allowed given the scope and context

isExplicitlyDenied

public boolean isExplicitlyDenied(User.Type user,
                                  java.lang.String scope,
                                  Data context)

Evaluates if the user is explicitly denied access. An explicit deny (return true) is different from a non-explicit deny (return false) in that the former says "I am strictly against it" and the latter is more "I do not have any objections".

The scope and context are not defined and can be anything, the behavior will depend on applicable Policy

In general, the scope will be "topic" and the context will contain a Message entity.

Parameters:

user - the user, must not be null

scope - the scope of interest, must not be null

context - the context data to check against rules and policies, may be null

Returns:

true if the user is explicitly denied given the scope and context

isExplicitlyAllowed

public boolean isExplicitlyAllowed(User.Type user,
                                   java.lang.String scope,
                                   Data context)

Evaluates if the user is explicitly allowed access. An explicit allow (return true) is different from a non-explicit allow (return false) in that the former says "Yes you can" and the latter is more "I don't know".

The scope and context are not defined and can be anything, the behavior will depend on applicable Policy

In general, the scope will be "topic" and the context will contain a Message entity.

Parameters:

user - the user, must not be null

scope - the scope of interest, must not be null

context - the context data to check against rules and policies, may be null

Returns:

true if the user is explicitly allowed given the scope and context

generateToken

public abstract Token generateToken(User.Type user,
                                    long validity,
                                    boolean exclusive,
                                    java.lang.String... scopes)

Generates a Token for the provided user.

Parameters:

user - the target user, must not be null and must not be User.SYSTEM or User.ANONYMOUS

validity - the validity time in millisecond. A value <= 0 means valid forever.

exclusive - whether or not other tokens for the same user should be revoked (regardless of the scopes)

scopes - the list of scopes, must not be null or empty

Returns:

a token that can be used to uniquely identify the provided user, or null if the token could not be generated

authenticate

public abstract Token authenticate(java.lang.String token,
                                   boolean reset)

Retreives a token instance based on a an opaque token value.

Parameters:

token - the token value, must not be null

reset - whether or not to reset the optional time-based validity of this for this token

Returns:

the matching token instance or null if no token matches

revokeToken

public abstract void revokeToken(Token token)

Revokes the provided token If the provided token is null, this method returns without doing anything.

Parameters:

token - the token to revoke

clearTokens

public abstract void clearTokens(User.Type user)

Revokes all tokens for the provided user

Parameters:

user - the target user, must not be null and must not be User.SYSTEM or User.ANONYMOUS