Dialog Modification of a message by a hash value

In the category Hash value you have to enter both the hash value (in hexadecimal notation) which determines the modification of the message and the Significant bit length which is the number of bits that shall be used for the modification.

In the category Options for the modification of messages the method of modifying messages depending on the entered hash value can be chosen.

If the radio button Insert blanks is checked, at least one of the two check boxes In front of end of line and Double Blanks has to be checked. Starting from the end of a message, a blank is inserted in front of an end of line and/or in front of another blank.

Attach characters is the other method of modifying messages. There, two bits of a hash value are mapped on one character which is attached at the end of the message. For reasons of demonstration, Printable characters ("A", "B", "C" or "D") can be used, otherwise Unprintable characters (the characters with the ASCII codes 9, 10, 32 or 160) are attached.

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After clicking Compute modification the modification of the current text window is computed and displayed in a new window.