Form design: Open Microsoft Visual Studio. Select Visual Basic and click Windows Application. Name the project as “PasswordSpaces Project”. Store the file in desired location. The created project is now displayed with a form in the name of Form1. Rename the Form1 as “Main Form” and add the necessary components. In property window, change the Form name and add changes for Form elements properties. Click the File menu->Save All. View of the form design in the IDE: The form control properties in the properties window are as follows: Object Property Setting Form1 Text Password txtWords Text (Empty) lblPassword Text (Empty) btnCreate Text Create password btnExit Text Exit Add the required controls to the form. Add two button controls to create the password and exit the program respectively.

Question

In the past, encryption and decryption were mostly done by substitution and permutation of letters in a text message. study those classic cryptographic schemes Then, develop an automatic cipher using Javascript The cipher should be able to perform the following tasks: generate keys encrypt a given plaintext message with a key selected from the list of keys generated decrypt a given ciphertext message with a known cipher key

Answer 1

Question

Chapter 7, Problem 4E

Program Plan Intro

Form design:

Open Microsoft Visual Studio.

Select Visual Basic and click Windows Application.

Name the project as “PasswordSpaces Project”.

Store the file in desired location.

The created project is now displayed with a form in the name of Form1.

Rename the Form1 as “Main Form” and add the necessary components.

In property window, change the Form name and add changes for Form elements properties.

Click the File menu->Save All.

View of the form design in the IDE:

The form control properties in the properties window are as follows:

Object Property Setting
Form1 Text Password
txtWords Text (Empty)
lblPassword Text (Empty)
btnCreate Text Create password
btnExit Text Exit

Add the required controls to the form.

Add two button controls to create the password and exit the program respectively.

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