The Derby Network Client allows you to select a security mechanism by specifying a value for the securityMechanism property.
You can set the securityMechanism property in one of the following ways:
The following table lists the security mechanisms that the Derby Network Client supports, and the corresponding property value to specify to obtain this security mechanism. The default security mechanism is the user id only if no password is set. If the password is set, the default security mechanism is both the user id and password. The default user is APP if no other user is specified.
|Security Mechanism||securityMechanism Property Value||Comments|
|User id and password||ClientDataSource.CLEAR_TEXT_PASSWORD_SECURITY (0x03)||Default if password is set|
|User id only||ClientDataSource.USER_ONLY_SECURITY (0x04)||Default if password is not set|
|Strong password substitution||ClientDataSource.STRONG_PASSWORD_SUBSTITUTE_SECURITY (0x08)||Strong password substitution can be used only with Derby's BUILTIN authentication mechanism or with authentication disabled. Also, for the BUILTIN mechanism, strong password substitution does not work for database-level users whose password has been protected by a custom message digest algorithm specified by the derby.authentication.builtin.algorithm property.|
|Encrypted user id and encrypted password||ClientDataSource.ENCRYPTED_USER_AND_PASSWORD_SECURITY (0x09)||Encryption requires a JCE implementation that supports the Diffie-Hellman algorithm with a public prime of 256 bits.|