http://users.telenet.be/d.rijmenants/en/onetimepad.htm
YOFPVG
Decipher the cipher above
Shift 1:5
Shift 2:7
Shift 3:1
Shift 4:11
Shift 5:2
Shift 6:3
One-Time Pad Cipher
Pros And Cons
Pros: Hard for people who are trying to break your code if they dont have the code book
Very realiable
Cons: Takes some time to decipher a long message because there is a shift for every single letter of the message
If someone gets the code book they can intercept the message and read your messages
Paper one-time pads
- Very limited use due to practical and logistical issues
- Widely used by foreign service communicators until the 1980s
- Code books went with these paper one-time pads, one code bok could contain thousands of words and entire phrases
Origins of One Time Pad
- Started to be used in 1882
- Frank Miller created this in one of his code books
- His code book contains 14,000 words and phrases
- This dissappeared, only to be discovered in archives in 2011
- In 1917, Gilbert Vernam developed a system to encrypt teletype TTY communications
- Very closely resembles Miller's ideas but highly unlikely he borrowed Miller's ideas because he had a electromechanical system completely different from Miller's pen and paper algorithm
Very Difficult to Decode
- If you don't have the code book it could be very difficult for you to read the message.
- You have to do 26 times however many letters there are and the number you will get is how many combination's there are