Konica Minolta bizhub C227 bizhub C287/C227 Security Operations User Manual - Page 83
Protecting Data in the HDD, 2.12.1 Setting the Encryption Key (encryption word)
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2.12 Protecting Data in the HDD 2 2.12 Protecting Data in the HDD When a log-on to the Administrator Mode becomes successful, the machine enables the operation for setting and changing the Encryption Key. The machine also enables the Overwrite HDD Data function. By setting the Encryption Key, the data stored in the HDD is encrypted, thereby protecting the data in the HDD. The Encryption Key entered is displayed as "*." NOTICE If the HDD develops a fault, call your Service Representative. The following shows setting conditions for the Encryption Key. Perform settings for the Encryption Key fitting these conditions. Types of passwords Encryption Key Number of characters 20 characters Types of characters • Numeric characters: 0 to 9 • Alpha characters: upper and lower case letters • Symbols Selectable from among a total of 83 characters Conditions for setting/changes • An Encryption Key only consisting of identical characters cannot be registered or changed. • The current Encryption Key must be entered before a change can be made in the setting. • A new Encryption Key to be set should not be the same as the current one. Tips When an Encryption Key (encryption word) is set using HDD Encryption Setting, an Encryption Key with a key length of 256 bits is generated. The generated encryption key is used to encrypt or decrypt data through AES encryption algorithm. 2.12.1 Setting the Encryption Key (encryption word) 0 For the procedure to call the Security Settings screen on the display, see steps 1 through 3 of page 2-15. 0 Do not leave the machine with the setting screen of Administrator Mode left shown on the display. If it is absolutely necessary to leave the machine, be sure first to log off from the Administrator Mode. 0 To prevent data from leaking as a result of reinstallation of the HDD on another machine, a unique value that varies from one machine to another must be set for the encryption key. 0 Do not set any number that can easily be guessed from birthdays, employee identification numbers, and the like for the Encryption Key. Try to change the Encryption Key at regular intervals. 0 Make sure that nobody but the administrator comes to know the Encryption Key. 0 If only the Encryption Key is to be set while the machine is being used without setting the Encryption Key, the Service Engineer must perform some setting procedures in advance. For details, contact your Service Representative. 0 To edit/release the Encryption Key, see page 2-65. Do not release the Encryption Key when the Enhanced Security Mode is set to [ON]. Releasing the Encryption Key will cancel the Enhanced Security Mode. 0 Executing HDD Format erases data in the HDD. It is recommended that important data should be saved in a backup medium in advance. Execution of HDD Format will also reset the setting values of different functions to the default values. Set the Enhanced Security Mode to [ON] again. For the functions whose settings are reset to the default values, see page 2-14. bizhub C287/C227 2-61