Encryption

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In FreeMind, the whole map or single branches may be encrypted. An encrypted branch has a padlock icon. Encryption is available since FreeMind 0.8.0. Using encryption TODO: Menu entries. Format: To achieve this, do that. To insert an encrypted branch, select Insert Encrypted Node from the Tools menu. It is not possible to encrypt an existing node, though you can move an existing node to an encrypted branch once you have created it. To lock or unlock an encrypted branch, select Toggle Crypted/Encrypted from the Tools menu. Encryption algorithm The encryption algorith used in FreeMind 0.8.0 and in the last beta versions of 0.9.0 is Single DES. Tripple DES is not supported. Both Single DES and Tripple DES are symmetric-key algorithms built in Java. Troubleshooting Problem: Maps encrypted with FreeMind running on Java Runtime Environment JRE 1.4 and JRE 1.5 cannot be opened with FreeMind running on Java Runtime Environment JRE 1.6. Concerned operating systems: Linux, Windows, and possibly other. Concerned FreeMind versions: 0.8.0, 0.9.0 beta 9. Solution: A provisional solution is to stick with Java Runtime Environment JRE 1.4 or JRE 1.5. Detail: There is a bug in the PBE key getkey.getAlgorithm() method in JRE 1.4> key.getAlgorithm() returns PBEWithMD5AndDES instead of PBEWithMD5AndTripleDES. See also: Bug Nr. 4051143 in Sun bug database. File format The encrypted branches are stored in FreeMind XML as follows. TODO. Implementation Class: Tools, Inner class: TripleDesEncrypter Class: EncryptedMindMapNode Links Triple DES at Wikipedia DES - Data Encryption Standard at Wikipedia Symmetric-key algorithm at Wikipedia Implementation Cipher - Java API Java Cryptography Extension (JCE) - Reference Guide Java Cryptography Architecture - Sun Providers Documentation for Java Platform Standard Edition 6