Screen shots of the Python RSA GUI

XXX Screen shot of start up state. A public and private key are randomly generated the instruction "Enter plain text here." You may use that very sentence as the plain text to be encoded, or you may type your own in. Pressing the little screw head button to the left deletes the current plain text.

XXX Plain text and cipher text may be entered by typing into the corresponding entry windows or they may be loaded in from files by using the pulldown File menu.

XXX There are 5 numbers that are important in the RSA protocol, e, d, p, q, and n. d is the private key. There other may be be viewed by pressing the corresponding buttons at the bottom left. This shot shows the result of presing the e key.

XXX The RSA GUI operates in 4 modes chosen by the pull down menu on top.

XXX Choosing a mode fires up the action appropriate to the mode. Pressing the Go key while already in the mode does the same. This shot shows the result of pressing the Go key while in encode mode. The cipher window fills up with ciphertext, the appropriate encoding for the current plain text using the current public key.

XXX Hitting carriage return with the cursor in the plaintext entry window turns the plain text into an integer, the first step in the encoding process, since encoding involves doing some modular arithmetic.

XXX This shot illustrates the use of the verify button while in signature mode. This verifies that the signature belongs to the plain text by using the public key decode the text in the cipher window (which is where the signature shows up) and mkaing sure it matches the hash of the plain text.

XXX This shot shows the Key verification window. Hitting carriage return while the cursor is in in either the public key or private key window brings up the key verification window.

XXX What shows up when you choose "Help" from the pulldown Help menu on the upper right.

XXX More Help.