You will find below a tool for performing the RSA
Encryption. It can be used for both encryption and decryption as follows:
- Encryption: Enter your text in the box below. Press the
button To Numbers to convert it to a string of
4-digit numbers. Enter the desired keys m and
e into the boxes and press Encrypt/Decrypt
. You will see a new string of digits which is the encrypted
message. You can send this to someone by cutting and pasting it into
an email message.
- Decryption: Enter the string of digits you wish to decrypt
into the box and enter the decryption keys m and
d in the appropriate fields. Press the button
Encrypt/Decrypt and then press To
Note that the label f is used for the window in
which either e or d should be
entered. The button Clear will clear the text window and
the button Undo will undo the last thing you did.
You can use any letter, lower or upper case, spaces, periods and
numbers in your message.
For instance, you could send
email to me with
the subject heading "Encrypted Message". My
public keys are m = 8321 and e = 521